//----------------------------------------------------------------------------
//  EgalTech 2015-2020
//----------------------------------------------------------------------------
// File : VolZmap.cpp         Data : 05.10.20           Versione : 2.2j1
// Contenuto : Implementazione della classe Volume Zmap (tre griglie)
//
//
//
// Modifiche : 22.01.15 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

//--------------------------- Include ----------------------------------------

#include "stdafx.h"
#include "CurveLine.h"
#include "CurveArc.h"
#include "CurveBezier.h"
#include "SurfBezier.h"
#include "VolZmap.h"
#include "GeoConst.h"
#include "IntersLineBox.h"
#include "/EgtDev/Include/EGkIntervals.h"
#include "/EgtDev/Include/EGkStringUtils3d.h"
#include "/EgtDev/Include/EGkSurfBezier.h"
#include "/EgtDev/Include/EGkIntersLineBox.h"
#include "/EgtDev/Include/ENkPolynomialRoots.h"
#include "/EgtDev/Include/EgtNumUtils.h"
#include "/EgtDev/Include/EgtPerfCounter.h"
#include <future>
#include <numeric>

#define SAVETRIMMINGTOOL 0

#if SAVETRIMMINGTOOL
std::vector<IGeoObj*> vGeo ;
#include "/EgtDev/Include/EGkGeoObjSave.h"
#endif

using namespace std ;

// ------------------------- OPERAZIONI SU INTERVALLI --------------------------------------------------------------------------------------

//----------------------------------------------------------------------------
bool
VolZmap::SubtractIntervals( int nGrid, int nI, int nJ,
                            double dMin, double dMax, const Vector3d& vtNMin, const Vector3d& vtNMax,
                            int nToolNum, bool bSkipSwap)
{
  // Controllo che dMin e dMax non siano quasi coincidenti
   if ( abs( dMax - dMin) < EPS_ZERO)
      return true ;

  // Controllo che il numero di griglia sia entro i limiti
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // Controllo che gli indici nI, nJ siano entro i limiti
   if ( nI < 0  ||  nI >= m_nNx[nGrid]  || 
        nJ < 0  ||  nJ >= m_nNy[nGrid])
      return false ;

  // Controllo che dMin < dMax
   Vector3d vtNmi = vtNMin ;
   Vector3d vtNma = vtNMax ;
   if ( dMin > dMax) {
      swap( dMin, dMax) ;
      swap( vtNmi, vtNma) ;
   }

  // Riporto le coordinate cicliche delle normali nell'ordine di partenza (da griglia a sistema intrinseco)
   if ( ! bSkipSwap  &&  nGrid == 1) {
      swap( vtNmi.x, vtNmi.z) ;
      swap( vtNmi.y, vtNmi.z) ;
      swap( vtNma.x, vtNma.z) ;
      swap( vtNma.y, vtNma.z) ;
   }
   else if ( ! bSkipSwap  &&  nGrid == 2) {
      swap( vtNmi.y, vtNmi.z) ;
      swap( vtNmi.x, vtNmi.z) ;
      swap( vtNma.y, vtNma.z) ;
      swap( vtNma.x, vtNma.z) ;
   }

  // Recupero dexel da modificare
   int nPos = nJ * m_nNx[nGrid] + nI ;
   vector<Data>& vDexel = m_Values[nGrid][nPos] ;

  // Ciclo sugli intervalli del dexel (ordinati in senso crescente)
   bool bModified = false ;
   for ( int i = 0 ; i < int( vDexel.size()) ; ++i) {
     // Se interseca l'intervallo corrente
      if ( dMin < vDexel[i].dMax - EPS_ZERO  &&  dMax > vDexel[i].dMin + EPS_ZERO) {
         bModified = true ;
        // se devo limitarlo inferiormente
         if ( dMin <= vDexel[i].dMin + EPS_ZERO  &&  dMax < vDexel[i].dMax - EPS_ZERO) {
            vDexel[i].dMin = dMax ;
            vDexel[i].vtMinN = vtNma ;
            vDexel[i].nToolMin = nToolNum ;
         }
        // se devo limitarlo superiormente
         else if ( dMin > vDexel[i].dMin + EPS_ZERO  &&  dMax >= vDexel[i].dMax - EPS_ZERO) {
            vDexel[i].dMax = dMin ;
            vDexel[i].vtMaxN = vtNmi ;
            vDexel[i].nToolMax = nToolNum ;
         }
        // se devo dividerlo in due parti
         else if ( dMin > vDexel[i].dMin + EPS_ZERO  &&  dMax < vDexel[i].dMax - EPS_ZERO) {
           // inserisco nuovo intervallo (parte superiore)
            vDexel.insert( vDexel.begin() + i + 1,
                           { dMax, vtNma, nToolNum,
                             vDexel[i].dMax, vDexel[i].vtMaxN, vDexel[i].nToolMax,
                             vDexel[i].nCompo}) ;
           // aggiorno il vecchio (parte inferiore)
            vDexel[i].dMax = dMin ;
            vDexel[i].vtMaxN = vtNmi ;
            vDexel[i].nToolMax = nToolNum ;
            ++ i ;
         }
        // altrimenti devo eliminarlo
         else {
            vDexel.erase( vDexel.begin() + i) ;
            -- i ;
         }
      }
     // se è tutto minore dell'intervallo corrente, ho finito
      else if ( dMax <= vDexel[i].dMin + EPS_ZERO)
         break ;
     // altrimenti è tutto maggiore dell'intervallo corrente, passo al successivo
      else   // dMin >= vDexel[i].dMax - EPS_ZERO
         ;
   }

  // Se nessuna modifica, esco
   if ( ! bModified)
      return true ;

  // Elimino residui di intervalli inutili
   for ( int i = 0 ; i < int( vDexel.size()) ; ++ i) {
      int nMaxN = int( floor( ( vDexel[i].dMax + 2 * EPS_SMALL - 0.5 * m_dStep) / m_dStep)) ;
      int nMinN = int( floor( ( vDexel[i].dMin - 2 * EPS_SMALL - 0.5 * m_dStep) / m_dStep)) ;
      if ( nMinN == nMaxN) {
         vDexel.erase( vDexel.begin() + i) ;
         -- i ;
      }
   }

  // Imposto ricalcolo della grafica
   m_OGrMgr.Reset() ;
  // Imposto forma generica 
   m_nShape = GENERIC ;    
  // Imposto ricalcolo numero di componenti connesse
   m_nConnectedCompoCount = - 1 ; 

  // Passo da indici di dexel a indici di voxel
   nI /= m_nDexVoxRatio ;
   nJ /= m_nDexVoxRatio ;

  // Determino quali blocchi sono stati modificati
   if ( nGrid == 0) {
     // Voxel lungo X
      int nXStop = 1 ;
      int nXBlock[2] ;
      nXBlock[0] = min( nI / m_nVoxNumPerBlock, m_nFracLin[0] - 1) ;
      if ( nI % N_VOXBLOCK == 0  &&  nXBlock[0] > 0) {
         nXBlock[1] = nXBlock[0] - 1 ;
         ++ nXStop ;
      }
     // Voxel lungo Y
      int nYStop = 1 ;
      int nYBlock[2] ;
      nYBlock[0] = min( nJ / m_nVoxNumPerBlock, m_nFracLin[1] - 1) ;
      if ( nJ % N_VOXBLOCK == 0  &&  nYBlock[0] > 0) {
         nYBlock[1] = nYBlock[0] - 1 ;
         ++ nYStop ;
      }
     // Voxel lungo Z
      int nVoxNumZ = int( m_nNy[1] / m_nDexVoxRatio + ( m_nNy[1] % m_nDexVoxRatio == 0 ? 1 : 2)) ;  
      int nMinK = Clamp( int( floor( ( ( dMin - 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) - EPS_SMALL))), 0, nVoxNumZ - 2) ;
      int nMaxK = Clamp( int( floor( ( ( dMax + 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) + EPS_SMALL))), 0, nVoxNumZ - 2) ;
      int nMinZBlock = ( m_nMapNum == 1 ? 0 : Clamp( nMinK / int( m_nVoxNumPerBlock), 0, int( m_nFracLin[2] - 1))) ;
      int nMaxZBlock = min( int( m_nFracLin[2] - 1), nMaxK / int( m_nVoxNumPerBlock)) ;
     // Assegno flag ai voxel
      for ( int tI = 0 ; tI < nXStop ; ++ tI) {
         for ( int tJ = 0 ; tJ < nYStop ; ++ tJ) {
            for ( int k = nMinZBlock ; k <= nMaxZBlock ; ++ k) {
               int nBlockNum = k * m_nFracLin[0] * m_nFracLin[1] + nYBlock[tJ] * m_nFracLin[0] + nXBlock[tI] ;
               m_BlockToUpdate[nBlockNum] = true ;
            }
         }
      }
   }

   else if ( nGrid == 1) {
     // Voxel lungo Y
      int nYStop = 1 ;
      int nYBlock[2] ;
      nYBlock[0] = min( nI / m_nVoxNumPerBlock, m_nFracLin[1] - 1) ;
      if ( nI % N_VOXBLOCK == 0  &&  nYBlock[0] > 0) {
         nYBlock[1] = nYBlock[0] - 1 ;
         ++ nYStop ;
      }
     // Voxel lungo Z
      int nZStop = 1 ;
      int nZBlock[2] ;
      nZBlock[0] = min( nJ / m_nVoxNumPerBlock, m_nFracLin[2] - 1) ;
      if ( nJ % N_VOXBLOCK == 0  &&  nZBlock[0] > 0) {
         nZBlock[1] = nZBlock[0] - 1 ;
         ++ nZStop ;
      }
     // Voxel lungo X
      int nVoxNumX = int( m_nNx[0] / m_nDexVoxRatio + ( m_nNx[0] % m_nDexVoxRatio == 0 ? 1 : 2)) ;
      int nMinI = Clamp( int( floor( ( ( dMin - 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) - EPS_SMALL))), 0, nVoxNumX - 2) ;
      int nMaxI = Clamp( int( floor( ( ( dMax + 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) + EPS_SMALL))), 0, nVoxNumX - 2) ;
      int nMinXBlock = Clamp( nMinI / int( m_nVoxNumPerBlock), 0, int( m_nFracLin[0] - 1)) ;
      int nMaxXBlock = min( int( m_nFracLin[0] - 1), nMaxI / int( m_nVoxNumPerBlock)) ;
     // Assegno flag ai voxel
      for ( int tI = 0 ; tI < nYStop ; ++ tI) {
         for ( int tJ = 0 ; tJ < nZStop ; ++ tJ) {
            for ( int k = nMinXBlock ; k <= nMaxXBlock ; ++ k) {
               int nBlockNum = nZBlock[tJ] * m_nFracLin[0] * m_nFracLin[1] + nYBlock[tI] * m_nFracLin[0] + k ;
               m_BlockToUpdate[nBlockNum] = true ;
            }
         }
      } 
   }

   else if ( nGrid == 2) {
     // Voxel lungo X
      int nXStop = 1 ;
      int nXBlock[2] ;
      nXBlock[0] = min( nJ / m_nVoxNumPerBlock, m_nFracLin[0] - 1) ;
      if ( nJ % N_VOXBLOCK == 0  &&  nXBlock[0] > 0) {
         nXBlock[1] = nXBlock[0] - 1 ;
         ++ nXStop ;
      }
     // Voxel lungo Z
      int nZStop = 1 ;
      int nZBlock[2] ;
      nZBlock[0] = min( nI / m_nVoxNumPerBlock, m_nFracLin[2] - 1) ;
      if ( nI % N_VOXBLOCK == 0  &&  nZBlock[0] > 0) {
         nZBlock[1] = nZBlock[0] - 1 ;
         ++ nZStop ;
      }
     // Voxel lungo Y 
      int nVoxNumY = int( m_nNy[0] / m_nDexVoxRatio + ( m_nNy[0] % m_nDexVoxRatio == 0 ? 1 : 2)) ; 
      int nMinJ = Clamp( int( floor( ( ( dMin - 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) - EPS_SMALL))), 0, nVoxNumY - 2) ; 
      int nMaxJ = Clamp( int( floor( ( ( dMax + 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) + EPS_SMALL))), 0, nVoxNumY - 2) ; 
      int nMinYBlock = Clamp( nMinJ / int( m_nVoxNumPerBlock), 0, int( m_nFracLin[1] - 1)) ;
      int nMaxYBlock = min( int( m_nFracLin[1] - 1), nMaxJ / int( m_nVoxNumPerBlock)) ;
     // Assegno flag ai voxel
      for ( int tI = 0 ; tI < nZStop ; ++ tI) {
         for ( int tJ = 0 ; tJ < nXStop ; ++ tJ) {
            for ( int k = nMinYBlock ; k <= nMaxYBlock ; ++ k) {
               int nBlockNum = nZBlock[tI] * m_nFracLin[0] * m_nFracLin[1] + k * m_nFracLin[0] + nXBlock[tJ] ;
               m_BlockToUpdate[nBlockNum] = true ;
            }
         }
      } 
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::AddIntervals( int nGrid, int nI, int nJ,
                       double dMin, double dMax, const Vector3d& vtNMin, const Vector3d& vtNMax,
                       int nToolNum, bool bSkipSwap)
{
  // Controllo che il numero di griglia sia entro i limiti
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // Controllo che indici nI, nJ siano entro i limiti
   if ( nI < 0  ||  nI >= m_nNx[nGrid]  ||
        nJ < 0  ||  nJ >= m_nNy[nGrid])
      return false ;

  // Controllo che dMin < dMax
   Vector3d vtNmi = vtNMin ;
   Vector3d vtNma = vtNMax ;
   if ( dMin > dMax) {
      swap( dMin, dMax) ;
      swap( vtNmi, vtNma) ;
   }

  // Restringo minimo e massimo entro i limiti della mappa
   if ( dMin < m_dMinZ[nGrid]) {
      dMin = m_dMinZ[nGrid] ;
      if ( ! bSkipSwap)
         vtNmi = - Z_AX ;
   }
   else if ( dMin > m_dMaxZ[nGrid]) {
      dMin = m_dMaxZ[nGrid] ;
      if ( ! bSkipSwap)
         vtNmi = - Z_AX ;
   }
   if ( dMax < m_dMinZ[nGrid]) {
      dMax = m_dMinZ[nGrid] ;
      if ( ! bSkipSwap)
         vtNma = Z_AX ;
   }
   else if ( dMax > m_dMaxZ[nGrid]) {
      dMax = m_dMaxZ[nGrid] ;
      if ( ! bSkipSwap)
         vtNma = Z_AX ;
   }

  // Controllo che dMin e dMax non siano quasi coincidenti
   if ( abs( dMax - dMin) < EPS_SMALL)
      return true ;

  // Riporto le coordinate cicliche nell'ordine di partenza
   if ( !bSkipSwap  &&  nGrid == 1) {
      swap( vtNmi.x, vtNmi.z) ;
      swap( vtNmi.y, vtNmi.z) ;
      swap( vtNma.x, vtNma.z) ;
      swap( vtNma.y, vtNma.z) ;
   }
   else if ( !bSkipSwap  &&  nGrid == 2) {
      swap( vtNmi.y, vtNmi.z) ;
      swap( vtNmi.x, vtNmi.z) ;
      swap( vtNma.y, vtNma.z) ;
      swap( vtNma.x, vtNma.z) ;
   }

   // Calcolo nPos
   int nPos = nJ * m_nNx[nGrid] + nI ;
   vector<Data>& vDexel = m_Values[nGrid][nPos] ;

   bool bModified = false ;

  // Non esistono segmenti 
   if ( vDexel.empty()) {
   
      vDexel.emplace_back() ;
      vDexel.back().dMin = dMin ;
      vDexel.back().vtMinN = vtNmi ;
      vDexel.back().nToolMin = nToolNum ;
      vDexel.back().dMax = dMax ;
      vDexel.back().vtMaxN = vtNma ;
      vDexel.back().nToolMax = nToolNum ;
      
      m_OGrMgr.Reset() ;

      bModified = true ;
   }
  // Esiste almeno un segmento
   else {
     // Cerco l'ultimo intervallo a sinistra e l'ultimo intervallo a destra
     // di quello da aggiungere, che non interferiscono con quest'ultimo.
      auto itLastLeft = vDexel.end() ;
      auto itFirstRight = vDexel.end() ;
      for ( auto it = vDexel.begin() ; it != vDexel.end() ; ++ it) {
         if ( dMin > it->dMax + EPS_SMALL)
            itLastLeft = it ;
         if ( dMax < it->dMin - EPS_SMALL  &&  itFirstRight == vDexel.end())
            itFirstRight = it ;
      }
     // Esistono intervalli a sinistra.
      if ( itLastLeft != vDexel.end()) {
        // Intervallo successivo all'ultimo a sinistra
         auto itNextToLastLeft = itLastLeft ;
         ++ itNextToLastLeft ;
        // Il successivo non esiste.
         if ( itNextToLastLeft == vDexel.end()) {
            // Aggiungo il nuovo semgento
            vDexel.emplace_back() ;
            vDexel.back().dMin = dMin ;
            vDexel.back().dMax = dMax ;
            vDexel.back().vtMinN = vtNmi ;
            vDexel.back().vtMaxN = vtNma;
            vDexel.back().nToolMin = nToolNum ;
            vDexel.back().nToolMax = nToolNum ;
            //m_Values[nGrid][nPos].back().nCompo = ;
            bModified = true ;
         }
        // Il successivo esiste.
         else {
           // Il successivo è il primo a destra.
            if ( itNextToLastLeft == itFirstRight) {
              // Inserisco nuovo segmento-
               Data NewSegment ;
               NewSegment.dMin = dMin ;
               NewSegment.dMax = dMax ;
               NewSegment.vtMinN = vtNmi ;
               NewSegment.vtMaxN = vtNma ;
               NewSegment.nToolMin = nToolNum ;
               NewSegment.nToolMax = nToolNum ;
               //NewSegment.nCompo = ;
               vDexel.insert( itFirstRight, NewSegment) ;
               bModified = true ;
            }
            else {
              // Il successivo non esce a sinistra da quello da aggiungere.
               if ( itNextToLastLeft->dMin > dMin + EPS_SMALL) {
                  itNextToLastLeft->dMin = dMin ;
                  itNextToLastLeft->vtMinN = vtNmi ;
                  itNextToLastLeft->nToolMin = nToolNum ;
               }
              // Cerco l'ultimo segmento che interferisce con quello da aggiungere.
               auto itPrevToFirstRight = vDexel.end() ;
               for ( auto it = itNextToLastLeft ; it != itFirstRight ; ++ it) {
                  itPrevToFirstRight = it ;
               }
              // L'ultimo che interferisce non esce a destra da quello da aggiungere.
               if ( itPrevToFirstRight->dMax < dMax - EPS_SMALL) {
                  itNextToLastLeft->dMax = dMax ;
                  itNextToLastLeft->vtMaxN = vtNma ;
                  itNextToLastLeft->nToolMax = nToolNum ;
                  bModified = true ;
               }
               else {
                  itNextToLastLeft->dMax = itPrevToFirstRight->dMax ;
                  itNextToLastLeft->vtMaxN = itPrevToFirstRight->vtMaxN ;
                  itNextToLastLeft->nToolMax = nToolNum ;
                  bModified = true ;
               }
               auto itFirstToCancel = itNextToLastLeft ;
               ++ itFirstToCancel ;
               vDexel.erase( itFirstToCancel, itFirstRight) ;
            }
         }
      }
     // Non esistono neanche a destra.
      else if ( itFirstRight == m_Values[nGrid][nPos].end()) {
        // Il primo intervallo non sporge a sinistra
         if ( vDexel.begin()->dMin > dMin + EPS_SMALL) {
            vDexel.begin()->dMin = dMin ;
            vDexel.begin()->vtMinN = vtNmi ;
            vDexel.begin()->nToolMin = nToolNum ;
            bModified = true ;
         }
        // L'ultimo intervallo sporge a destra.
         if ( m_Values[nGrid][nPos].back().dMax > dMax + EPS_SMALL) {
           // Ci sono più segmenti, inglobo tutti nel primo.
            if ( vDexel.back().dMax > vDexel.begin()->dMax + EPS_SMALL) {
               vDexel.begin()->dMax = vDexel.back().dMax ;
               vDexel.begin()->vtMaxN = vDexel.back().vtMaxN ;
               vDexel.begin()->nToolMax = nToolNum ;
               bModified = true ;
            }
         }
        // L'ultimo intervallo non sporge a destra.
         else {
            vDexel.begin()->dMax = dMax ;
            vDexel.begin()->vtMaxN = vtNma ;
            vDexel.begin()->nToolMax = nToolNum ;
            bModified = true ;
         }
         vDexel.erase( vDexel.begin() + 1, vDexel.end()) ;
      }
     // A destra esistono.
      else {
        // Tutti i segmenti sono a destra di qullo da aggiungere.
         if ( itFirstRight == vDexel.begin()) {
           // Inserisco nuovo segmento-
            Data NewSegment ;
            NewSegment.dMin = dMin ;
            NewSegment.dMax = dMax ;
            NewSegment.vtMinN = vtNmi ;
            NewSegment.vtMaxN = vtNma ;
            NewSegment.nToolMin = nToolNum ;
            NewSegment.nToolMax = nToolNum ;
            vDexel.insert( vDexel.begin(), NewSegment) ;
            bModified = true ;
         }
         else {
           // Se il primo segmento non esce a sinistra da quello da aggiungere, cambio l'inizio.
            if ( vDexel.begin()->dMin > dMin + EPS_SMALL) {
               vDexel.begin()->dMin = dMin ;
               vDexel.begin()->vtMinN = vtNmi ;
               vDexel.begin()->nToolMin = nToolNum ;
               bModified = true ;
            }
           // Cerco l'ultimo segmento che interferisce con quello da aggiungere.
            auto itPrevToFirstRight = vDexel.begin() ;
            for ( auto it = m_Values[nGrid][nPos].begin() ; it != itFirstRight ; ++ it) {
               itPrevToFirstRight = it ;
            }
           // L'ultimo che interferisce non esce a destra da quello da aggiungere.
            if ( itPrevToFirstRight->dMax < dMax - EPS_SMALL) {
               vDexel.begin()->dMax = dMax ;
               vDexel.begin()->vtMaxN = vtNma ;
               vDexel.begin()->nToolMax = nToolNum ;
               bModified = true ;
            }
            else {
               vDexel.begin()->dMax = itPrevToFirstRight->dMax ;
               vDexel.begin()->vtMaxN = itPrevToFirstRight->vtMaxN ;
               vDexel.begin()->nToolMax = nToolNum ;
               bModified = true ;
            }
            auto itFirstToCancel = vDexel.begin() ;
            ++ itFirstToCancel ;
            vDexel.erase( itFirstToCancel, itFirstRight) ;
         }
      }  
   }

  // Se nessuna modifica, esco
   if ( ! bModified)
      return true ;

  // Imposto ricalcolo della grafica
   m_OGrMgr.Reset() ;
  // Imposto forma generica 
   m_nShape = GENERIC ;    
  // Imposto ricalcolo numero di componenti connesse
   m_nConnectedCompoCount = - 1 ;

  // Passo da indici di dexel a indici di voxel
   nI /= m_nDexVoxRatio ;
   nJ /= m_nDexVoxRatio ;

  // Determino quali blocchi sono stati modificati
   if ( nGrid == 0) {
     // Voxel lungo X
      int nXStop = 1 ;
      int nXBlock[2] ;
      nXBlock[0] = min( nI / m_nVoxNumPerBlock, m_nFracLin[0] - 1) ;
      if ( nI % N_VOXBLOCK == 0  &&  nXBlock[0] > 0) {
         nXBlock[1] = nXBlock[0] - 1 ;
         ++ nXStop ;
      }
     // Voxel lungo Y
      int nYStop = 1 ;
      int nYBlock[2] ;
      nYBlock[0] = min( nJ / m_nVoxNumPerBlock, m_nFracLin[1] - 1) ;
      if ( nJ % N_VOXBLOCK == 0  &&  nYBlock[0] > 0) {
         nYBlock[1] = nYBlock[0] - 1 ;
         ++ nYStop ;
      }
     // Voxel lungo Z
      int nVoxNumZ = int( m_nNy[1] / m_nDexVoxRatio + ( m_nNy[1] % m_nDexVoxRatio == 0 ? 1 : 2)) ;  
      int nMinK = Clamp( int( floor( ( ( dMin - 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) - EPS_SMALL))), 0, nVoxNumZ - 2) ;
      int nMaxK = Clamp( int( floor( ( ( dMax + 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) + EPS_SMALL))), 0, nVoxNumZ - 2) ;
      int nMinZBlock = ( m_nMapNum == 1 ? 0 : Clamp( nMinK / int( m_nVoxNumPerBlock), 0, int( m_nFracLin[2] - 1))) ;
      int nMaxZBlock = min( int( m_nFracLin[2] - 1), nMaxK / int( m_nVoxNumPerBlock)) ;
     // Assegno flag ai voxel
      for ( int tI = 0 ; tI < nXStop ; ++ tI) {
         for ( int tJ = 0 ; tJ < nYStop ; ++ tJ) {
            for ( int k = nMinZBlock ; k <= nMaxZBlock ; ++ k) {
               int nBlockNum = k * m_nFracLin[0] * m_nFracLin[1] + nYBlock[tJ] * m_nFracLin[0] + nXBlock[tI] ;
               m_BlockToUpdate[nBlockNum] = true ;
            }
         }
      }
   }

   else if ( nGrid == 1) {
     // Voxel lungo Y
      int nYStop = 1 ;
      int nYBlock[2] ;
      nYBlock[0] = min( nI / m_nVoxNumPerBlock, m_nFracLin[1] - 1) ;
      if ( nI % N_VOXBLOCK == 0  &&  nYBlock[0] > 0) {
         nYBlock[1] = nYBlock[0] - 1 ;
         ++ nYStop ;
      }
     // Voxel lungo Z
      int nZStop = 1 ;
      int nZBlock[2] ;
      nZBlock[0] = min( nJ / m_nVoxNumPerBlock, m_nFracLin[2] - 1) ;
      if ( nJ % N_VOXBLOCK == 0  &&  nZBlock[0] > 0) {
         nZBlock[1] = nZBlock[0] - 1 ;
         ++ nZStop ;
      }
     // Voxel lungo X
      int nVoxNumX = int( m_nNx[0] / m_nDexVoxRatio + ( m_nNx[0] % m_nDexVoxRatio == 0 ? 1 : 2)) ;
      int nMinI = Clamp( int( floor( ( ( dMin - 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) - EPS_SMALL))), 0, nVoxNumX - 2) ;
      int nMaxI = Clamp( int( floor( ( ( dMax + 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) + EPS_SMALL))), 0, nVoxNumX - 2) ;
      int nMinXBlock = Clamp( nMinI / int( m_nVoxNumPerBlock), 0, int( m_nFracLin[0] - 1)) ;
      int nMaxXBlock = min( int( m_nFracLin[0] - 1), nMaxI / int( m_nVoxNumPerBlock)) ;
     // Assegno flag ai voxel
      for ( int tI = 0 ; tI < nYStop ; ++ tI) {
         for ( int tJ = 0 ; tJ < nZStop ; ++ tJ) {
            for ( int k = nMinXBlock ; k <= nMaxXBlock ; ++ k) {
               int nBlockNum = nZBlock[tJ] * m_nFracLin[0] * m_nFracLin[1] + nYBlock[tI] * m_nFracLin[0] + k ;
               m_BlockToUpdate[nBlockNum] = true ;
            }
         }
      } 
   }

   else if ( nGrid == 2) {
     // Voxel lungo X
      int nXStop = 1 ;
      int nXBlock[2] ;
      nXBlock[0] = min( nJ / m_nVoxNumPerBlock, m_nFracLin[0] - 1) ;
      if ( nJ % N_VOXBLOCK == 0  &&  nXBlock[0] > 0) {
         nXBlock[1] = nXBlock[0] - 1 ;
         ++ nXStop ;
      }
     // Voxel lungo Z
      int nZStop = 1 ;
      int nZBlock[2] ;
      nZBlock[0] = min( nI / m_nVoxNumPerBlock, m_nFracLin[2] - 1) ;
      if ( nI % N_VOXBLOCK == 0  &&  nZBlock[0] > 0) {
         nZBlock[1] = nZBlock[0] - 1 ;
         ++ nZStop ;
      }
     // Voxel lungo Y 
      int nVoxNumY = int( m_nNy[0] / m_nDexVoxRatio + ( m_nNy[0] % m_nDexVoxRatio == 0 ? 1 : 2)) ; 
      int nMinJ = Clamp( int( floor( ( ( dMin - 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) - EPS_SMALL))), 0, nVoxNumY - 2) ; 
      int nMaxJ = Clamp( int( floor( ( ( dMax + 0.5 * m_dStep) / ( m_nDexVoxRatio * m_dStep) + EPS_SMALL))), 0, nVoxNumY - 2) ; 
      int nMinYBlock = Clamp( nMinJ / int( m_nVoxNumPerBlock), 0, int( m_nFracLin[1] - 1)) ;
      int nMaxYBlock = min( int( m_nFracLin[1] - 1), nMaxJ / int( m_nVoxNumPerBlock)) ;
     // Assegno flag ai voxel
      for ( int tI = 0 ; tI < nZStop ; ++ tI) {
         for ( int tJ = 0 ; tJ < nXStop ; ++ tJ) {
            for ( int k = nMinYBlock ; k <= nMaxYBlock ; ++ k) {
               int nBlockNum = nZBlock[tI] * m_nFracLin[0] * m_nFracLin[1] + k * m_nFracLin[0] + nXBlock[tJ] ;
               m_BlockToUpdate[nBlockNum] = true ;
            }
         }
      } 
   }

   return true ;
}

//----------------------------------------------------------------------------
bool 
VolZmap::ManageSubIntervalInVoxel( VolZmap* VolZmapRef, int nGrid, int nI, int nJ, int nK,
                                   double& dMin, double& dMax, Vector3d& vtMin, Vector3d& vtMax)
{
  // Se non Tridex, esco
   if ( ! IsTriDexel())
      return true ;

  // Controllo che il numero di griglia sia entro i limiti
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // Controllo che indici nI, nJ siano entro i limiti
   if ( nI < 0  &&  nI >= m_nNx[nGrid]  &&  nJ < 0  &&  nJ >= m_nNy[nGrid])
      return false ;

  // Valori di Default
   DBLVECTOR vdMin = { -1., -1., -1., -1.} ;
   DBLVECTOR vdMax = { -1., -1., -1., -1.} ;
   VCT3DVECTOR vNMin = { V_INVALID, V_INVALID, V_INVALID, V_INVALID} ;
   VCT3DVECTOR vNMax = { V_INVALID, V_INVALID, V_INVALID, V_INVALID} ;

  // Se esiste un voxel precedente lungo x-locale ( nI - 1, nJ)
   if ( nI != 0) {
     // Ne recupero la posizione
      int nPos = nJ * m_nNx[nGrid] + ( nI - 1) ;
     // Scorro tutti gli intervalli del dexel in (nI - 1, nJ)
      for ( int it = 0 ; it < int( VolZmapRef->m_Values[nGrid][nPos].size()) ; ++ it) {
        // Se nei pressi dell'estremo superiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMax + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMax - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMax[0] = VolZmapRef->m_Values[nGrid][nPos][it].vtMaxN ;
            vdMax[0] = VolZmapRef->m_Values[nGrid][nPos][it].dMax ;
         }
        // Se nei pressi dell'estremo inferiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMin + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMin - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMin[0] = VolZmapRef->m_Values[nGrid][nPos][it].vtMinN ;
            vdMin[0] = VolZmapRef->m_Values[nGrid][nPos][it].dMin ;
         }
      }
   }

  // Se esiste un voxel successivo lungo x-locale, ne recupero la posizione
   int nPos = nJ * m_nNx[nGrid] + ( nI + 1) ;
   if ( nPos < int( VolZmapRef->m_Values[nGrid].size())) {
     // Cerco l'intervallo corretto sullo Zmap di riferimento
      for ( int it = 0 ; it < int( VolZmapRef->m_Values[nGrid][nPos].size()) ; ++ it) {
        // Se nei pressi dell'estremo superiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMax + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMax - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMax[1] = VolZmapRef->m_Values[nGrid][nPos][it].vtMaxN ;
            vdMax[1] = VolZmapRef->m_Values[nGrid][nPos][it].dMax ;
         }
        // Se nei pressi dell'estremo inferiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMin + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMin - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMin[1] = VolZmapRef->m_Values[nGrid][nPos][it].vtMinN ;
            vdMin[1] = VolZmapRef->m_Values[nGrid][nPos][it].dMin ;
         }
      }
   }

  // Se esiste un voxel precedente lungo y-locale
   if ( nJ != 0) {
     // Ne recupero la posizione
      int nPos = ( nJ - 1) * m_nNx[nGrid] + nI ;
     // Cerco l'intervallo corretto sullo Zmap di riferimento
      for ( int it = 0 ; it < int( VolZmapRef->m_Values[nGrid][nPos].size()) ; ++ it) {
        // Se nei pressi dell'estremo superiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMax + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMax - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMax[2] = VolZmapRef->m_Values[nGrid][nPos][it].vtMaxN ;
            vdMax[2] = VolZmapRef->m_Values[nGrid][nPos][it].dMax ;
         }
        // Se nei pressi dell'estremo inferiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMin + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMin - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMin[2] = VolZmapRef->m_Values[nGrid][nPos][it].vtMinN ;
            vdMin[2] = VolZmapRef->m_Values[nGrid][nPos][it].dMin ;
         }
      }
   }

  // Se esiste un voxel successivo lungo y-locale, ne recupero la posizione
   nPos = ( nJ + 1) * m_nNx[nGrid] + nI ;
   if ( nPos < int( VolZmapRef->m_Values[nGrid].size())) {
     // Cerco l'intervallo corretto sullo Zmap di riferimento
      for ( int it = 0 ; it < int( VolZmapRef->m_Values[nGrid][nPos].size()) ; ++ it) {
        // Se nei pressi dell'estremo superiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMax + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMax - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMax[3] = VolZmapRef->m_Values[nGrid][nPos][it].vtMaxN ;
            vdMax[3] = VolZmapRef->m_Values[nGrid][nPos][it].dMax ;
         }
        // Se nei pressi dell'estremo inferiore
         if ( VolZmapRef->m_Values[nGrid][nPos][it].dMin + EPS_SMALL > nK * m_dStep  &&
              VolZmapRef->m_Values[nGrid][nPos][it].dMin - EPS_SMALL < ( nK + 1) * m_dStep) {
           // Memorizzo i parametri
            vNMin[3] = VolZmapRef->m_Values[nGrid][nPos][it].vtMinN ;
            vdMin[3] = VolZmapRef->m_Values[nGrid][nPos][it].dMin ;
         }
      }
   }

  // --- Scelgo le normali che si discostano il meno possibile dalla normale della faccia del voxel

  // 1) Angolo minimo tra la normale trovata la faccia del voxel
   double dMinAngle = ANG_FULL ;
  // 2) Vettore di riferimento per la direzione della normale
   vtMax = ( nGrid == 0 ? m_MapFrame.VersZ() :
             nGrid == 1 ? m_MapFrame.VersX() :
             nGrid == 2 ? m_MapFrame.VersY() :
                          V_INVALID) ;
   Vector3d vtRef = vtMax ;
  // 3) Determino il massimo per questo intervallo
   dMax = ( nK + 1) * m_dStep ;
   for ( int i = 0 ; i < 4 ; ++ i) {
     // Scorro le normali valide trovate
      if ( vNMax[i].IsValid()) {
        // Angolo corrente tra la normale di riferimento e quella della faccia del voxel
         double dCurrAngle ; vNMax[i].GetAngle( vtRef, dCurrAngle) ;
        // Se angolo minore del minimo trovato...
         if ( abs( dCurrAngle) < dMinAngle) { 
           // ... Aggiorno i parametri
            dMinAngle = dCurrAngle ;
            vtMax = vNMax[i] ;
            dMax = vdMax[i] ;
         }
      }
   }

  // Ripeto lo stesso ragionamento per le normali dei massimi
   dMinAngle = ANG_FULL ;
   vtRef.Invert() ;
   dMin = nK * m_dStep ;
   vtMin = vtRef ;
   for ( int i = 0 ; i < 4 ; ++ i) {
      if ( vNMin[i].IsValid()) {
         double dCurrAngle ;
         vNMin[i].GetAngle( vtRef, dCurrAngle) ;
         if ( abs( dCurrAngle) < dMinAngle) {
            dMinAngle = dCurrAngle  ;
            vtMin = vNMin[i] ;
            dMin = vdMin[i] ;
         }
      }
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::UniformIntervalsInVoxel( int nGrid, int nI, int nJ, double dZMin,
                                  double dZMax, double dToler, bool bAdd, int nToolNum, const Vector3d& vtToolMin,
                                  const Vector3d& vtToolMax)
{
  // Se non Tridex, esco
   if ( ! IsTriDexel())
      return true ;

  // Controllo che il numero di griglia sia entro i limiti
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // Controllo che indici nI, nJ siano entro i limiti
   if ( nI < 0  &&  nI >= m_nNx[nGrid]  &&  nJ < 0  &&  nJ >= m_nNy[nGrid])
      return false ;

  // Numero di voxel contenuti nel dexel corrente ( uguale per ogni dexel di una specifica griglia)
   int nVoxNum = int( m_nNy[(( nGrid + 1) % 3)] / m_nDexVoxRatio +
                    ( m_nNy[(( nGrid + 1) % 3)] % m_nDexVoxRatio == 0 ? 1 : 2)) ;

  // Scorro i Voxel correnti
   for ( int nVox = 0 ; nVox < nVoxNum ; ++ nVox) {
     // Considero solo i Voxel interni all'intervallo corrente
      if ( dZMin - m_dStep / 2. < nVox * m_dStep  &&  nVox * m_dStep < dZMax + m_dStep / 2.) {
        // recupero gli indici per la griglia successiva
         int nMyGrid = ( nGrid + 1) % 3 ;
         int nMyI = nJ ;
         int nMyJ = nVox ;
         int nMyK = nI ;
         double dMyMinZ = nMyK * m_dStep ;         // shift di -Step / 2
         double dMyMaxZ = ( nMyK + 1) * m_dStep ;  // shift di Step / 2
         Vector3d vtMyMaxN = ( vtToolMax.IsValid() ? vtToolMax :
                               nMyGrid == 0 ?        m_MapFrame.VersZ() :
                               nMyGrid == 1 ?        m_MapFrame.VersX() :
                                                     m_MapFrame.VersY()) ;
         Vector3d vtMyMinN = ( vtToolMin.IsValid() ? vtToolMin : - vtMyMaxN) ;
         if ( bAdd)
            AddIntervals( nMyGrid, nMyI, nMyJ, dMyMinZ, dMyMaxZ, vtMyMinN, vtMyMaxN, nToolNum, true) ;
         else
            SubtractIntervals( nMyGrid, nMyI, nMyJ, dMyMinZ, dMyMaxZ, vtMyMinN, vtMyMaxN, nToolNum, true) ;
        // recupero gli indici della griglia precedente
         nMyGrid = ( nGrid + 2) % 3 ;
         nMyI = nVox ;
         nMyJ = nI ;
         nMyK = nJ ;
         dMyMinZ = nMyK * m_dStep ;                // shift di -Step / 2
         dMyMaxZ = ( nMyK + 1) * m_dStep ;         // shift di Step / 2
         vtMyMaxN = ( vtToolMax.IsValid() ? vtToolMax :
                      nMyGrid == 0 ?        m_MapFrame.VersZ() :
                      nMyGrid == 1 ?        m_MapFrame.VersX() :
                                            m_MapFrame.VersY()) ;
         vtMyMinN = ( vtToolMin.IsValid() ? vtToolMin : - vtMyMaxN) ;
         if ( bAdd)
            AddIntervals( nMyGrid, nMyI, nMyJ, dMyMinZ, dMyMaxZ, vtMyMinN, vtMyMaxN, nToolNum, true) ;
         else
            SubtractIntervals( nMyGrid, nMyI, nMyJ, dMyMinZ, dMyMaxZ, vtMyMinN, vtMyMaxN, nToolNum, true) ;
      }
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::AddStripInterval( int nGrid, int nI, int nJ, double dZMin, double dZMax, int nToolNum)
{
  // Se non Tridex, esco
   if ( ! IsTriDexel())
      return true ;

  // Controllo che il numero di griglia sia entro i limiti
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // Controllo che indici nI, nJ siano entro i limiti
   if ( nI < 0  &&  nI >= m_nNx[nGrid]  &&  nJ < 0  &&  nJ >= m_nNy[nGrid])
      return false ;

  // Numero di voxel contenuti nel dexel corrente ( uguale per ogni dexel di una specifica griglia)
   int nVoxNum = int( m_nNy[(( nGrid + 1) % 3)] / m_nDexVoxRatio +
                    ( m_nNy[(( nGrid + 1) % 3)] % m_nDexVoxRatio == 0 ? 1 : 2)) ;

  // Scorro i Voxel correnti
   for ( int nVox = - 1 ; nVox < nVoxNum - 1 ; ++ nVox) {
     // Considero solo i Voxel interni all'intervallo corrente
      if ( ( nVox + 1) * m_dStep > dZMin  &&  ( nVox - 1) * m_dStep < dZMax) {
        // Recupero gli indici per la griglia successiva
         int nMyGrid = ( nGrid + 1) % 3 ;
         int nMyI = nJ ;
         int nMyJ = nVox ;
         int nMyK = nI ;
         double dMyMinZ = nMyK * m_dStep ;
         double dMyMaxZ = ( nMyK + 1) * m_dStep ;
         Vector3d vtMyMaxN = ( nMyGrid == 0 ? m_MapFrame.VersZ() :
                               nMyGrid == 1 ? m_MapFrame.VersX() :
                                              m_MapFrame.VersY()) ;
         Vector3d vtMyMinN = - vtMyMaxN ;
         AddIntervals( nMyGrid, nMyI, nMyJ, dMyMinZ - EPS_SMALL, dMyMaxZ + EPS_SMALL, vtMyMinN, vtMyMaxN, nToolNum, true) ;
        // Recupero gli indici della griglia precedente
         nMyGrid = ( nGrid + 2) % 3 ;
         nMyI = nVox ;
         nMyJ = nI ;
         nMyK = nJ ;
         dMyMinZ = nMyK * m_dStep ;
         dMyMaxZ = ( nMyK + 1) * m_dStep ;
         vtMyMaxN = ( nMyGrid == 0 ? m_MapFrame.VersZ() :
                      nMyGrid == 1 ? m_MapFrame.VersX() :
                                     m_MapFrame.VersY()) ;
         vtMyMinN = - vtMyMaxN ;
         AddIntervals( nMyGrid, nMyI, nMyJ, dMyMinZ - EPS_SMALL, dMyMaxZ + EPS_SMALL, vtMyMinN, vtMyMaxN, nToolNum, true) ;
      }
   }
  // Aggiungo l'intervallo corrente
   Vector3d vtMyMaxN = ( nGrid == 0 ? m_MapFrame.VersZ() :
                         nGrid == 1 ? m_MapFrame.VersX() :
                                      m_MapFrame.VersY()) ;
   Vector3d vtMyMinN = - vtMyMaxN ;
   AddIntervals( nGrid, nI, nJ, dZMin, dZMax, vtMyMinN, vtMyMaxN, nToolNum, true) ;

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::GetLocalPoint( int nGrid, int nI, int nJ, double dZ, Point3d& ptLoc)
{
   // Verifico che lo ZMap corrente sia valido
   if ( ! IsValid())
      return false ;

  // Controllo che il numero di griglia sia entro i limiti
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // Controllo che indici nI, nJ siano entro i limiti
   if ( nI < 0  &&  nI >= m_nNx[nGrid]  &&  nJ < 0  &&  nJ >= m_nNy[nGrid])
      return false ;

  // Calcolo il punto
   ptLoc = m_MapFrame.Orig() ;
   if ( nGrid == 0)
      ptLoc += ( ( nI + 0.5) * m_dStep * m_MapFrame.VersX() + ( nJ + 0.5) * m_dStep * m_MapFrame.VersY() + dZ * m_MapFrame.VersZ()) ;
   else if ( nGrid == 1)
      ptLoc += ( ( nI + 0.5) * m_dStep * m_MapFrame.VersY() + ( nJ + 0.5) * m_dStep * m_MapFrame.VersZ() + dZ * m_MapFrame.VersX()) ;
   else
      ptLoc += ( ( nI + 0.5) * m_dStep * m_MapFrame.VersZ() + ( nJ + 0.5) * m_dStep * m_MapFrame.VersX() + dZ * m_MapFrame.VersY()) ;

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::ComputePointAndNormalForRemovingFins( int nGrid, int nI, int nJ, double dZ,
                                             const Vector3d& vtDir, double dThick, bool bMinVsMax, int nTool,
                                             Vector3d& vtN, double& dNewZ)
{
  // Verifico che lo ZMap corrente sia valido
   if ( ! IsValid())
      return false ;

  // Controllo che il numero di griglia sia entro i limiti
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // Inizializzo il vettore da restituire
   vtN = V_NULL ;
   dNewZ = INFINITO ;

  // Proietto la direzione lungo la mappa della griglia corrente
   Vector3d vtDirProj = OrthoCompo( vtDir, ( nGrid == 0 ? m_MapFrame.VersZ() :
                                             nGrid == 1 ? m_MapFrame.VersX() :
                                                          m_MapFrame.VersY())) ;
  // Sposto il punto corrente nella direzione opposta a quella trovata
   Point3d ptLoc ;
   if ( ! GetLocalPoint( nGrid, nI, nJ, dZ, ptLoc))
      return false ;
   Point3d ptCenterLoc = ptLoc ;
   ptCenterLoc.Translate( - vtDirProj * dThick) ;

  // Recupero il Box nel punto
   BBox3d BBoxLoc ; BBoxLoc.Add( ptCenterLoc) ;
   double dExpandX = ( m_MapFrame.VersX() * X_AX) * dThick * ( vtDirProj * X_AX) ;
   double dExpandY = ( m_MapFrame.VersY() * Y_AX) * dThick * ( vtDirProj * Y_AX) ;
   double dExpandZ = ( m_MapFrame.VersZ() * Z_AX) * dThick * ( vtDirProj * Z_AX) ;
   BBoxLoc.Expand( max( ( m_dStep + EPS_SMALL), dExpandX),
                   max( ( m_dStep + EPS_SMALL), dExpandY),
                   max( ( m_dStep + EPS_SMALL), dExpandZ)) ;

  // Porto il Box nel Frame della Mappa corrente
   BBox3d BBoxInGrid = GetToLoc( BBoxLoc, m_MapFrame) ;
  // Recupero i suoi estremi
   Point3d ptBoxLocMax = BBoxInGrid.GetMax() ;
   Point3d ptBoxLocMin = BBoxInGrid.GetMin() ;
  // Determino gli intervalli locali in X e Y locali alla Griglia correnti
   double dMinXLoc = ( nGrid == 0 ? ptBoxLocMin.x : nGrid == 1 ? ptBoxLocMin.y : ptBoxLocMin.z) ;
   double dMinYLoc = ( nGrid == 0 ? ptBoxLocMin.y : nGrid == 1 ? ptBoxLocMin.z : ptBoxLocMin.x) ;
   double dMaxXLoc = ( nGrid == 0 ? ptBoxLocMax.x : nGrid == 1 ? ptBoxLocMax.y : ptBoxLocMax.z) ;
   double dMaxYLoc = ( nGrid == 0 ? ptBoxLocMax.y : nGrid == 1 ? ptBoxLocMax.z : ptBoxLocMax.x) ;

  // Recupero gli Spilloni coinvolti nel Box
   int nStartI = max( 0, int( dMinXLoc / m_dStep)) ;
   int nEndI = min( m_nNx[nGrid] - 1, int( dMaxXLoc / m_dStep)) ;
   int nStartJ = max( 0, int( dMinYLoc / m_dStep)) ;
   int nEndJ = min( m_nNy[nGrid] - 1, int( dMaxYLoc / m_dStep)) ;
   double dSqMinDist = INFINITO ;
   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
        // Determino la posizione corrente dello Spillone
         int nPos = j * m_nNx[nGrid] + i ;
         vector<Data>& vDexel = m_Values[nGrid][nPos] ;
        // Scorro i suoi Intervalli
         for ( int nInterval = 0 ; nInterval < ssize( vDexel) ; ++ nInterval) {
           // Se l'Intervallo presenta un indice del Tool da evitare, passo al successivo
            if ( ( bMinVsMax  &&  vDexel[nInterval].nToolMin != nTool)  ||
                 ( ! bMinVsMax  &&  vDexel[nInterval].nToolMax != nTool))
               continue ;
           // Recupero l'estremo da analizzare
            double dZInterval = ( bMinVsMax ? vDexel[nInterval].dMin : vDexel[nInterval].dMax) ;
           // Recupero il punto associato
            Point3d ptInterval ;
            if ( ! GetLocalPoint( nGrid, i, j, dZInterval, ptInterval))
               return false ;
           // Se il punto è dentro nel Box, aggiungo il contributo della normale presente
            if ( BBoxLoc.Encloses( ptInterval)) {
               double dCurrSqDist = ( SqDist( ptInterval, ptLoc)) ;
               if ( dCurrSqDist < dSqMinDist) {
                  dSqMinDist = dCurrSqDist ;
                  vtN = ( bMinVsMax ? vDexel[nInterval].vtMinN : vDexel[nInterval].vtMaxN) ;
                  dNewZ = dZInterval ;
               }
            }
         }
      }
   }

   return ( ! vtN.IsSmall()  &&  dZ < INFINITO - 1) ;
}


// ------------------------- BOUNDING BOX --------------------------------------------------------------------------------------

//----------------------------------------------------------------------------
inline BBox3d
GetCylMoveBBox( const Point3d& ptP1, const Point3d& ptP2, const Vector3d& vtV, double dRad, double dH)
{
  // Determinazione delle posizioni della punta del componente nelle posizioni iniziale e finale
   Point3d ptP1T = ptP1 - dH * vtV ;
   Point3d ptP2T = ptP2 - dH * vtV ;
  // Calcolo del box del movimento dell'asse
   BBox3d b3Box ;
   b3Box.Add( ptP1) ;
   b3Box.Add( ptP1T) ;
   b3Box.Add( ptP2) ;
   b3Box.Add( ptP2T) ;
  // Aggiungo ingombro raggio
   if ( AreSameOrOppositeVectorApprox( vtV, X_AX))
      b3Box.Expand( 0, dRad, dRad) ;
   else if ( AreSameOrOppositeVectorApprox( vtV, Y_AX))
      b3Box.Expand( dRad, 0, dRad) ;
   else if ( AreSameOrOppositeVectorApprox( vtV, Z_AX))
      b3Box.Expand( dRad, dRad, 0) ;
   else {
      double dExpandX = dRad * sqrt( 1 - vtV.x * vtV.x) ;
      double dExpandY = dRad * sqrt( 1 - vtV.y * vtV.y) ;
      double dExpandZ = dRad * sqrt( 1 - vtV.z * vtV.z) ;
      b3Box.Expand( dExpandX, dExpandY, dExpandZ) ;
   }
  // Restituisco il box calcolato
   return b3Box ;
}

//----------------------------------------------------------------------------
inline BBox3d
GetCylMoveRotBBox( const Point3d& ptP1, const Point3d& ptP2, const Vector3d& vtV1, const Vector3d& vtV2, double dRad, double dH)
{
   // costruisco gli archi che definiscono il top e bottom del tool di partenza nel loro riferimento e li porto nel frame
    BBox3d bbStart = GetCylMoveBBox( ptP1, ptP1, vtV1, dRad, dH) ;
    BBox3d bbEnd = GetCylMoveBBox( ptP2, ptP2, vtV2, dRad, dH) ;
    
    // sommo i due box e li restituisco
    BBox3d bbVol ;
    bbVol.Add( bbStart) ;
    bbVol.Add( bbEnd) ;

    return bbVol ;
}

//----------------------------------------------------------------------------
inline BBox3d
GetSphereMoveBBox( const Point3d& ptP1, const Point3d& ptP2, double dRad)
{
  // Calcolo del box del movimento del centro
   BBox3d b3Box ;
   b3Box.Add( ptP1) ;
   b3Box.Add( ptP2) ;
  // Aggiungo ingombro raggio
   b3Box.Expand( dRad) ;
  // Restituisco il box calcolato
   return b3Box ;
}

//----------------------------------------------------------------------------
inline bool
VolZmap::TestToolBBox( int nGrid, const Point3d& ptP1, const Point3d& ptP2, const Vector3d& vtV,
                       int& nStI, int& nStJ, int& nEnI, int& nEnJ)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   return TestCompoBBox( nGrid, ptP1, ptP2, vtV, V_NULL,
                         CurrTool.GetRadius(), CurrTool.GetTipRadius(), CurrTool.GetHeigth(),
                         nStI, nStJ, nEnI, nEnJ) ;
}

//----------------------------------------------------------------------------
inline bool
VolZmap::TestCompoBBox( int nGrid, const Point3d& ptP1, const Point3d& ptP2, const Vector3d& vtV, const Vector3d& vtV2,
                        double dRad, double dTipRad, double dHei,
                        int& nStI, int& nStJ, int& nEnI, int& nEnJ)
{
  // I punti e i vettori devono essere nel sistema di riferimento opportuno

  // Controllo sull'ammissibilità del numero di griglia
   if ( nGrid < 0  ||  nGrid > 2)
      return false ;

  // BBox dello Zmap
   BBox3d b3Zmap( 0, 0, m_dMinZ[nGrid], m_nNx[nGrid] * m_dStep, m_nNy[nGrid] * m_dStep, m_dMaxZ[nGrid]) ;

  // BBox dell'utensile nel suo movimento
   double dMaxRad = max( dRad, dTipRad) ;
   BBox3d b3Box ;
   if ( vtV.IsSmall())
      b3Box = GetSphereMoveBBox( ptP1, ptP2, dRad) ;
   else if ( AreSameVectorExact( vtV2, V_NULL))
      b3Box = GetCylMoveBBox( ptP1, ptP2, vtV, dMaxRad, dHei) ;
   else
      b3Box = GetCylMoveRotBBox( ptP1, ptP2, vtV, vtV2, dRad, dHei) ;

  // Verifica dell'interferenza dell'utensile con lo Zmap
   if ( ! b3Zmap.Overlaps( b3Box))
      return false ;

  // Limiti su indici
   nStI = max( 0, int( b3Box.GetMin().x / m_dStep)) ;
   nEnI = min( m_nNx[nGrid] - 1, int( b3Box.GetMax().x / m_dStep)) ;
   nStJ = max( 0, int( b3Box.GetMin().y / m_dStep)) ;
   nEnJ = min( m_nNy[nGrid] - 1, int( b3Box.GetMax().y / m_dStep)) ;

   return true ;
}

//----------------------------------------------------------------------------
inline bool 
VolZmap::TestParaBBox( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtD, const Vector3d& vtA,
                       double dLenX, double dLenY, double dLenZ,
                       int& nStI, int& nStJ, int& nEnI, int& nEnJ) 
{
  // I punti e i vettori devono essere nel sistema di riferimento opportuno

  // Determino le posizioni iniziale e  
  // finale della punta dell'utensile.
   Point3d ptSTip = ptS - vtD * dLenZ ;
   Point3d ptETip = ptE - vtD * dLenZ ; 

   double dSemiDiag = sqrt( dLenX * dLenX + dLenY * dLenY) / 2 ;

  // Determinazione dei limiti del più piccolo parallelepipedo contenente il movimento
   double dMinX = min( min( ptS.x, ptSTip.x), min( ptE.x, ptETip.x)) - dSemiDiag ;
   double dMinY = min( min( ptS.y, ptSTip.y), min( ptE.y, ptETip.y)) - dSemiDiag ;
   double dMinZ = min( min( ptS.z, ptSTip.z), min( ptE.z, ptETip.z)) - dSemiDiag ;
   double dMaxX = max( max( ptS.x, ptSTip.x), max( ptE.x, ptETip.x)) + dSemiDiag ;
   double dMaxY = max( max( ptS.y, ptSTip.y), max( ptE.y, ptETip.y)) + dSemiDiag ;
   double dMaxZ = max( max( ptS.z, ptSTip.z), max( ptE.z, ptETip.z)) + dSemiDiag ;

   int nMaxNx = m_nNx[nGrid] ;
   int nMaxNy = m_nNy[nGrid] ;

   double dMaxXValue = nMaxNx * m_dStep ;
   double dMaxYValue = nMaxNy * m_dStep ;
   double dMinZValue = m_dMinZ[nGrid] ;
   double dMaxZValue = m_dMaxZ[nGrid] ;

  // Verifica dell'interferenza dell'utensile con lo Zmap
   if ( dMaxX < EPS_SMALL  ||  dMinX > dMaxXValue - EPS_SMALL)
      return false ;
   if ( dMaxY < EPS_SMALL  ||  dMinY > dMaxYValue - EPS_SMALL)
      return false ;
   if ( dMaxZ < dMinZValue + EPS_SMALL  ||  dMinZ > dMaxZValue - EPS_SMALL)
      return false ;

  // Limiti su indici
   nStI = ( dMinX < EPS_SMALL ? 0 : int( dMinX / m_dStep)) ;
   nEnI = ( dMaxX > dMaxXValue - EPS_SMALL ? nMaxNx - 1 : int( dMaxX / m_dStep)) ;
   nStJ = ( dMinY < EPS_SMALL ? 0 : int( dMinY / m_dStep)) ;
   nEnJ = ( dMaxY > dMaxYValue - EPS_SMALL ? nMaxNy - 1 : int ( dMaxY / m_dStep)) ;

   return true ;
}

// ------------------------- LAVORAZIONI --------------------------------------------------------------------------------------

//----------------------------------------------------------------------------       
bool
VolZmap::MillingStep( int nCurrTool,
                      const Point3d& ptPs, const Vector3d& vtDs,
                      const Point3d& ptPe, const Vector3d& vtDe) 
{
   return MillingStep( nCurrTool, ptPs, vtDs, Vector3d(), ptPe, vtDe, Vector3d()) ;
}

//static double dTotCount = 0. ;

//----------------------------------------------------------------------------       
bool
VolZmap::MillingStep( int nCurrTool,
                      const Point3d& ptPs, const Vector3d& vtDs, const Vector3d& vtAs,
                      const Point3d& ptPe, const Vector3d& vtDe, const Vector3d& vtAe)
{
  // Controllo utensile
   if ( nCurrTool < 0  ||  nCurrTool >= int( m_vTool.size()))
      return false ;
   m_nCurrTool = nCurrTool ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Se non è definito l'utensile, non posso fare alcunchè
   if ( CurrTool.GetType() == Tool::UNDEF)
      return false ;
  // Controllo definizione vettori direzione
   if ( vtDs.IsSmall()  ||  vtDe.IsSmall())
      return false ;
  // Controllo sull'effettiva esistenza del movimento
   if ( AreSamePointApprox( ptPs, ptPe)  &&  AreSameVectorApprox( vtDs, vtDe))
      return true ;
  // Se utensile chisel o mortise, controllo definizione vettori ausiliari
   if ( CurrTool.GetType() == Tool::MORTISER  ||  CurrTool.GetType() == Tool::CHISEL) {
      if ( vtAs.IsSmall()  ||  vtAe.IsSmall())
         return false ;
   }

  // Punti e vettori descriventi il moto nel sistema intrinseco dello Zmap
   Point3d ptPLs = GetToLoc( ptPs, m_MapFrame) ;
   Point3d ptPLe = GetToLoc( ptPe, m_MapFrame) ;
   Vector3d vtDLs = GetToLoc( vtDs, m_MapFrame) ;
   vtDLs.Normalize() ;
   Vector3d vtDLe = GetToLoc( vtDe, m_MapFrame) ;
   vtDLe.Normalize() ;
   Vector3d vtALs = GetToLoc( vtAs, m_MapFrame) ;
   vtALs.Normalize() ;
   Vector3d vtALe = GetToLoc( vtAe, m_MapFrame) ;
   vtALe.Normalize() ;

   //static PerformanceCounter Counter ;
   //{
   //string sOut = "Draw=" + ToString( Counter.Stop(), 3) ;
   //LOG_INFO( GetEGkLogger(), sOut.c_str())
   //Counter.Start() ;
   //}

  // Se pura traslazione
   bool bOk ;
   if ( AreSameVectorApprox( vtDLs, vtDLe))
      bOk = MillingTranslationStep( ptPLs, ptPLe, vtDLs, vtALs) ;
  // altrimenti anche rotazione
   else
      bOk = MillingGeneralMotionStep( ptPLs, vtDLs, vtALs, ptPLe, vtDLe, vtALe) ;

   //{
   //// debug per 5 assi
   //double dPartCount = Counter.Stop() ;
   //if ( ! AreSameVectorApprox( vtDLs, vtDLe)) {
   //   dTotCount += dPartCount ;
   //   string sOut = "Calc5Axis=" + ToString( dTotCount, 3) ;
   //   LOG_INFO( GetEGkLogger(), sOut.c_str())
   //}
   ////debug per 5 assi

   //dTotCount += dPartCount ;
   //string sOut = "Calc=" + ToString( dTotCount, 3) ;
   //LOG_INFO( GetEGkLogger(), sOut.c_str())
   //Counter.Start() ;
   //}

   return bOk ;
}

//----------------------------------------------------------------------------
static bool
GetAlongAcrossRotation( const Vector3d& vtDir1, const Vector3d& vtDir2, const Vector3d& vtRef,
                        double& dAlongAngDeg, double& dAcrossAngDeg)
{
   Vector3d vtAxis = vtRef ;
   if ( vtAxis.Normalize()) {
      bool bDet ; vtDir1.GetRotation( vtDir2, vtAxis, dAcrossAngDeg, bDet) ;
      Vector3d vtDirM = GetRotate( vtDir1, vtAxis, dAcrossAngDeg) ;
      vtDirM.GetAngle( vtDir2, dAlongAngDeg) ;
   }
   else {
      vtDir1.GetAngle( vtDir2, dAlongAngDeg) ;
      dAcrossAngDeg = 0 ;
   }
   return true ;
}

//----------------------------------------------------------------------------
static bool
UpdateMaxMin( Point3d& ptBez, Vector3d& vtN, PNTVEC3DVECTOR& vInters)
{
   if ( ! AreSameVectorExact( vtN, V_NULL))
      vInters.emplace_back( PNTVEC3D( ptBez, vtN)) ;
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::InitializeAuxPoints( Point3d ptTop1s[3], Point3d ptTop1e[3], Point3d ptTop2s[3], Point3d ptTop2e[3],
                              Point3d ptBottom1s[3], Point3d ptBottom1e[3], Point3d ptBottom2s[3], Point3d ptBottom2e[3])
{
   // per ogni array il punto epr la prima griglia è già settato, devo aggiungere i punti per le altre due, permutando le coordinate
   if ( m_nMapNum > 1) {
      ptTop1s[1].x = ptTop1s[0].y ;  ptTop1s[1].y = ptTop1s[0].z ;  ptTop1s[1].z = ptTop1s[0].x ;
      ptTop1s[2].x = ptTop1s[0].z ;  ptTop1s[2].y = ptTop1s[0].x ;  ptTop1s[2].z = ptTop1s[0].y ;
      ptTop1e[1].x = ptTop1e[0].y ;  ptTop1e[1].y = ptTop1e[0].z ;  ptTop1e[1].z = ptTop1e[0].x ;
      ptTop1e[2].x = ptTop1e[0].z ;  ptTop1e[2].y = ptTop1e[0].x ;  ptTop1e[2].z = ptTop1e[0].y ;
      ptTop2s[1].x = ptTop2s[0].y ;  ptTop2s[1].y = ptTop2s[0].z ;  ptTop2s[1].z = ptTop2s[0].x ;
      ptTop2s[2].x = ptTop2s[0].z ;  ptTop2s[2].y = ptTop2s[0].x ;  ptTop2s[2].z = ptTop2s[0].y ;
      ptTop2e[1].x = ptTop2e[0].y ;  ptTop2e[1].y = ptTop2e[0].z ;  ptTop2e[1].z = ptTop2e[0].x ;
      ptTop2e[2].x = ptTop2e[0].z ;  ptTop2e[2].y = ptTop2e[0].x ;  ptTop2e[2].z = ptTop2e[0].y ;
      ptBottom1s[1].x = ptBottom1s[0].y ;  ptBottom1s[1].y = ptBottom1s[0].z ;  ptBottom1s[1].z = ptBottom1s[0].x ;
      ptBottom1s[2].x = ptBottom1s[0].z ;  ptBottom1s[2].y = ptBottom1s[0].x ;  ptBottom1s[2].z = ptBottom1s[0].y ;
      ptBottom1e[1].x = ptBottom1e[0].y ;  ptBottom1e[1].y = ptBottom1e[0].z ;  ptBottom1e[1].z = ptBottom1e[0].x ;
      ptBottom1e[2].x = ptBottom1e[0].z ;  ptBottom1e[2].y = ptBottom1e[0].x ;  ptBottom1e[2].z = ptBottom1e[0].y ;
      ptBottom2s[1].x = ptBottom2s[0].y ;  ptBottom2s[1].y = ptBottom2s[0].z ;  ptBottom2s[1].z = ptBottom2s[0].x ;
      ptBottom2s[2].x = ptBottom2s[0].z ;  ptBottom2s[2].y = ptBottom2s[0].x ;  ptBottom2s[2].z = ptBottom2s[0].y ;
      ptBottom2e[1].x = ptBottom2e[0].y ;  ptBottom2e[1].y = ptBottom2e[0].z ;  ptBottom2e[1].z = ptBottom2e[0].x ;
      ptBottom2e[2].x = ptBottom2e[0].z ;  ptBottom2e[2].y = ptBottom2e[0].x ;  ptBottom2e[2].z = ptBottom2e[0].y ;
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::GenTool_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE,
                               const Vector3d& vtLs, const Vector3d& vtLe, int nToolNum, int n5AxisType) 
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Descrizione geometrica del moto
   Point3d ptI = ptS ;
   Point3d ptF = ptE ;
  // Vettore delle normali agli archi
   const VCT3DVECTOR& vArcNorm = CurrTool.GetArcNormalVec() ;
  // Poiché l'asse utensile è parallelo all'asse Z, definisco un sistema di
  // riferimento ad hoc in cui le normali agli archi giacciano nel piano XZ.
   Frame3d frNormFrame ;
   frNormFrame.Set( ORIG, X_AX, -Z_AX, Y_AX) ;

  // Ciclo sulle curve del profilo
   const CurveComposite& ToolProfile = CurrTool.GetApproxOutline() ;
   int nCrv = -1 ;
   const ICurve* pPrevCurve = nullptr ;
   const ICurve* pCurve = ToolProfile.GetCurve( ++ nCrv) ;
   double dCumHeight = 0 ;           // altezza cumulativa dei tratti già considerati
   while ( pCurve != nullptr) {

      double dHeight = 0 ;

     // Se segmento
      if ( pCurve->GetType() == CRV_LINE) {
        // Recupero gli estremi
         const ICurveLine* pLine = GetCurveLine( pCurve) ;
         Point3d ptStart = pLine->GetStart() ;
         Point3d ptEnd = pLine->GetEnd() ;
         int nNormNum = pLine->GetTempProp() ;
         Vector3d vtNormSt, vtNormEn ;
         if ( nNormNum != 0) {
            vtNormSt = vArcNorm[nNormNum - 1] ;
            vtNormEn = vArcNorm[nNormNum] ;
            vtNormSt.ToLoc( frNormFrame) ;
            vtNormEn.ToLoc( frNormFrame) ;
         }
        // Ne determino l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
         if ( dHeight > EPS_SMALL) {
           // verifiche curva precedente per eventuale tappo sopra
            bool bTapT = true ;
            if ( pPrevCurve != nullptr  &&  pPrevCurve->GetType() == CRV_LINE) {
               const ICurveLine* pOthLine = GetCurveLine( pPrevCurve) ;
               Point3d ptOthStart = pOthLine->GetStart() ;
               Point3d ptOthEnd = pOthLine->GetEnd() ;  
               if ( abs( ptOthStart.y - ptOthEnd.y) < EPS_SMALL  &&  ptOthStart.x < ptOthEnd.x)
                  bTapT = false ;
            }
           // verifiche curva successiva per eventuale tappo sotto
            bool bTapB = true ;
            const ICurve* pNextCurve = ToolProfile.GetCurve( ++ nCrv) ;
            if ( pNextCurve != nullptr  &&  pNextCurve->GetType() == CRV_LINE) {
               const ICurveLine* pOthLine = GetCurveLine( pNextCurve) ;
               Point3d ptOthStart = pOthLine->GetStart() ;
               Point3d ptOthEnd = pOthLine->GetEnd() ;
               if ( abs( ptOthStart.y - ptOthEnd.y) < EPS_SMALL  &&  ptOthStart.x > ptOthEnd.x)
                  bTapB = false ;
            }
           // Se X costante, è un cilindro
            if ( abs( ptStart.x - ptEnd.x) < EPS_SMALL) {
               double dRadius = ptStart.x ;
               if ( dRadius > 10 * EPS_SMALL)
                  CompCyl_5AxisMilling( nGrid, ptI, ptF, vtLs, vtLe, dHeight, dRadius, nToolNum, n5AxisType) ;
            }
           // se altrimenti X decrescente, è un cono con vettore equiverso a quello dell'utensile
            else if ( ptStart.x > ptEnd.x) {
               double dMaxRad = ptStart.x ;
               double dMinRad = ptEnd.x ;
               CompConus_5AxisMilling( nGrid, ptI, ptF, vtLs, vtLe, dHeight, dMaxRad, dMinRad,
                                       bTapB, bTapT, vtNormSt, vtNormEn, nToolNum, n5AxisType) ;
            }
           // altrimenti X crescente, è un cono con vettore opposto a quello dell'utensile
            else {
               double dMaxRad = ptEnd.x ; 
               double dMinRad = ptStart.x ;
               Point3d ptIn = ptI - vtLs * dHeight;
               Point3d ptFn = ptF - vtLe * dHeight;
               vtNormEn.z = - vtNormEn.z ;
               vtNormSt.z = - vtNormSt.z ;
               Vector3d  vNewVtLs = - vtLs ;
               Vector3d vNewVtLe = - vtLe ;
               CompConus_5AxisMilling( nGrid, ptIn, ptFn, vNewVtLs, vNewVtLe, dHeight, dMaxRad, dMinRad,
                                       bTapT, bTapB, vtNormEn, vtNormSt, nToolNum, n5AxisType) ;
            }  
           // Passo alla curva successiva
            pPrevCurve = pCurve ;
            pCurve = pNextCurve ;
         }
         else {
           // Passo alla curva successiva
            pPrevCurve = pCurve ;
            pCurve = ToolProfile.GetCurve( ++ nCrv) ;
         }
      }

     // Se arco
      else if ( pCurve->GetType() == CRV_ARC) { 
        // Recupero estremi, centro e raggio
         const ICurveArc* pArc = GetCurveArc( pCurve) ;
         Point3d ptStart ; pArc->GetStartPoint( ptStart) ;
         Point3d ptEnd ; pArc->GetEndPoint( ptEnd) ;
         Point3d ptCen = pArc->GetCenter() ;
         double dRadius = pArc->GetRadius() ;
        // Determino le posizioni iniziale e finale del centro della sfera
         Point3d ptCenS = ptI - vtLs * ( ptStart.y - ptCen.y ) ;
         Point3d ptCenE = ptF - vtLe * ( ptStart.y - ptCen.y ) ;
        // Eseguo l'asportazione del materiale
         CompBall_Milling( nGrid, ptCenS, ptCenE, dRadius, nToolNum) ;
        // aggiorno l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
        // Passo alla curva successiva
         pPrevCurve = pCurve ;
         pCurve = ToolProfile.GetCurve( ++ nCrv) ;
      } 

     // Determino le posizioni iniziale e finale del componente successivo
      dCumHeight += dHeight ;
      ptI = ptS - vtLs * dCumHeight ;
      ptF = ptE - vtLe * dCumHeight ;
   }

   return true ;
}

//----------------------------------------------------------------------------
static void
SortGroupInters( PNTVEC3DVECTOR& vInters, INTINTVECTOR& vStartEnds, const Vector3d& vMainAx)
{
   if ( AreSameVectorExact(vMainAx, Z_AX))
      sort( vInters.begin(), vInters.end(), [](PNTVEC3D& a, PNTVEC3D& b) { return a.first.z < b.first.z ; }) ;
   else if ( AreSameVectorExact(vMainAx, Y_AX))
      sort( vInters.begin(), vInters.end(), [](PNTVEC3D& a, PNTVEC3D& b) { return a.first.y < b.first.y ; }) ;
   else if ( AreSameVectorExact(vMainAx, X_AX))
      sort( vInters.begin(), vInters.end(), [](PNTVEC3D& a, PNTVEC3D& b) { return a.first.x < b.first.x ; }) ;
   // devo controllare che le intersezioni estreme abbiano direzione opposta
   // in caso contrario potrei avere ad uno dei due estremi due punti quasi coincidenti e stare prendendo per più esterno quello con la normale sbagliata
   bool bExtremesAreOpposite = ( vInters.front().second * vMainAx) * (vInters.back().second * vMainAx) < 0 ;
   if ( ! bExtremesAreOpposite) {
      // se ad uno dei due estremi trovo due punti quasi coincidenti scambio le normali dei due punti di intersezione
      bool bAtStart = false ;
      bool bAtEnd = false ;
      if ( AreSameVectorExact(vMainAx, Z_AX)) {
         bAtStart = (vInters[0].first.z - vInters[1].first.z) < EPS_SMALL ;
         bAtEnd = (vInters.back().first.z - vInters.end()[-2].first.z) < EPS_SMALL ;
      }
      else if ( AreSameVectorExact(vMainAx, Y_AX) ) {
         bAtStart = (vInters[0].first.y - vInters[1].first.y) < EPS_SMALL ;
         bAtEnd = (vInters.back().first.y - vInters.end()[-2].first.y) < EPS_SMALL ;
      }
      else if ( AreSameVectorExact(vMainAx, X_AX) ) {
         bAtStart = (vInters[0].first.x - vInters[1].first.x) < EPS_SMALL ;
         bAtEnd = (vInters.back().first.x - vInters.end()[-2].first.x) < EPS_SMALL ;
      }
      if ( bAtStart  &&  vInters.size() == 2)
         return ;

      if ( bAtStart)
         swap( vInters[0].second, vInters[1].second) ;
      else if ( bAtEnd)
         swap( vInters.back().second, vInters.end()[-2].second) ;
   }

   INTINT pStartEnd ;
   bool bDirStart = vInters.front().second * vMainAx > 0 ;
   bool bFirstEndFound = false ;
   pStartEnd.first = 0 ;
   for ( int w = 1 ; w < int( vInters.size()) ; ++w) {
      bool bDir = vInters[w].second * vMainAx > 0 ;
      // se è l'ultimo punto esco
      if ( w == int( vInters.size() - 1)  &&  bDirStart != bDir) {
         pStartEnd.second = w ;
         vStartEnds.push_back(pStartEnd) ;
         break ;
      }
      // sennò scorro finché non trovo l'uscita più lontana ( prima di un altro ingresso o eventualmente l'ultima inters)
      else if ( bDirStart != bDir)
         bFirstEndFound = true ;
      // se trovo di nuovo un'intersezione orientata come la prima dello spillone allora ho un nuovo start e posso chiudere l'intervallo precedente
      else if ( bFirstEndFound  &&  bDirStart == bDir) {
         pStartEnd.second = w - 1 ;
         bFirstEndFound = false ;
         vStartEnds.push_back(pStartEnd) ;
         pStartEnd.first = w ;
         pStartEnd.second = -1 ;
      }
   }
}

//----------------------------------------------------------------------------
struct SurfBezForInters {
   SurfBezier sBez ;
   BBox3d bbSurfOriented ;
   Frame3d frBox ;
   Vector3d a3, a2, a1, a0, b3, b2, b1, b0 ;
} ;

//----------------------------------------------------------------------------
static bool
IntersLineBezierSurfSet( const Point3d& ptLineStart, const Vector3d& vtLineDir,
                         const vector<SurfBezForInters>& vSurfBez, const BBox3d& bbVol, const Frame3d& frVol, PNTVEC3DVECTOR& vInters, INTVECTOR& vSurfInters,
                         const Vector3d& vtN, DBLDBLVECTOR& vInterv)
{
   Point3d r = ptLineStart ;
   Vector3d q = vtLineDir ;

   bool bNeedToRotX = AreSameVectorApprox( q, X_AX) ;
   bool bNeedToRotY = AreSameVectorApprox( q, Y_AX) ;
   bool bNeedToRot = bNeedToRotX  ||  bNeedToRotY ;
   Frame3d frRot ;
   if ( bNeedToRotX)
      frRot.Set( ORIG, X_AX) ;
   if ( bNeedToRotY)
      frRot.Set( ORIG, Y_AX) ;
   if ( bNeedToRot) {
      r.ToLoc( frRot) ;
      q.ToLoc( frRot) ;
   }
   
   // calcolo se un intevallo sul dexel interseca il box dell'intero volume spazzato
   bool bIntersVol = false ;
   {
       Point3d rLoc = r;
       Vector3d qLoc = q;
       rLoc.ToLoc(frVol);
       qLoc.ToLoc(frVol);
       for (int k = 0; k < int(vInterv.size()) && !bIntersVol; ++k) {
           INTDBLVECTOR vIntersDash;
           IntersLineBox(rLoc + qLoc * vInterv[k].first, rLoc + qLoc * vInterv[k].second, bbVol, vIntersDash, true);
           bIntersVol = vIntersDash.size() > 0;
       }
   }
   // se non sono stati passati gli intervalli allora vuol dire che lo spillone interseca
   if ( vInterv.size() == 0)
       bIntersVol = true ;

   if ( bIntersVol) {
      // interseco con le bezier
      for ( int s = 0 ; s < int( vSurfBez.size()) ; ++s) {
        // se ho già trovato l'intersezione con questa superficie vado avanti

         const SurfBezForInters& srf = vSurfBez[s] ;
         BBox3d bbox = srf.bbSurfOriented;
         Point3d rLoc = r ;
         Vector3d qLoc = q ;
         if ( ! bNeedToRot) {
             rLoc.ToLoc( srf.frBox) ;
             qLoc.ToLoc( srf.frBox) ;
         }
         else {
             rLoc.LocToLoc( frRot, srf.frBox) ;
             qLoc.LocToLoc( frRot, srf.frBox) ;
         }

         bool bCalcInters = false ;
         // verifico se il voxel interseca la box
         INTDBLVECTOR vIntersDash ;
         IntersLineBox(rLoc, qLoc, 0, bbox, vIntersDash, false) ;
         bCalcInters = vIntersDash.size() > 0 ;

         // verifico che lo spillone faccia interferenza con il box della superficie
         if ( bCalcInters) {
            // se la linea è parallela all'asse X o Y allora ruoto tutto di 45 gradi rispetto a Z
            Vector3d a3, a2, a1, a0, b3, b2, b1, b0 ;
            if ( ! bNeedToRot) {
               a3 = srf.a3 ;
               a2 = srf.a2 ;
               a1 = srf.a1 ;
               a0 = srf.a0 ;
               b3 = srf.b3 ;
               b2 = srf.b2 ;
               b1 = srf.b1 ;
               b0 = srf.b0 ;
            }
            else {
               SurfBezier sBezRot = srf.sBez ;
               sBezRot.ToLoc( frRot) ;
               PNTVECTOR vPntCtrl = sBezRot.GetAllControlPoints() ;

               Vector3d A = vPntCtrl[4] - vPntCtrl[0] ;
               Vector3d B = vPntCtrl[5] - vPntCtrl[1] ;
               Vector3d C = vPntCtrl[6] - vPntCtrl[2] ;
               Vector3d D = vPntCtrl[7] - vPntCtrl[3] ;
               Vector3d E = vPntCtrl[0] - ORIG ;
               Vector3d F = vPntCtrl[1] - ORIG ;
               Vector3d G = vPntCtrl[2] - ORIG ;
               Vector3d H = vPntCtrl[3] - ORIG ;

               a3 = -A + 3*B - 3*C + D ;
               a2 = 3*A - 6*B + 3*C ;
               a1 = -3*A +3*B ;
               a0 = A ;

               b3 = -E + 3*F - 3*G + H ;
               b2 = 3*E - 6*F + 3*G ;
               b1 = -3*E + 3*F ;
               b0 = E ;
            }

            DBLVECTOR vdCoeff, vdRoots ;
           // coefficienti dal grado più basso al grado più alto
            vdCoeff = { // c0
                        q.x*q.z*a0.y*b0.z - q.x*q.y*a0.z*b0.z                                          // 3
                        - r.z*q.x*q.z*a0.y + r.z*q.x*q.y*a0.z +                                        // 3
                        q.y*q.z*a0.z*b0.z - q.z*q.z*a0.y*b0.x                                          // 4
                        - r.x*q.y*q.z*a0.z + r.x*q.z*q.z*a0.y +                                        // 4
                        q.z*q.z*a0.x*b0.y - q.y*q.z*a0.x*b0.z - q.x*q.z*a0.z*b0.y + q.x*q.y*a0.z*b0.z  // 5
                        - r.y*q.z*q.z*a0.x + r.z*q.y*q.z*a0.x + r.y*q.x*q.z*a0.z - r.z*q.x*q.y*a0.z,   // 5

                        // c1
                        q.x*q.z*(a1.y*b0.z + a0.y*b1.z) - q.x*q.y*(a1.z*b0.z + a0.z*b1.z)             // 3
                        - r.z*q.x*q.z*a1.y + r.z*q.x*q.y*a1.z +                                       // 3
                        q.y*q.z*(a1.z*b0.x + a0.z*b1.x) - q.z*q.z*(a1.y*b0.x + a0.y*b1.x)             // 4
                        - r.x*q.y*q.z*a1.z + r.x*q.z*q.z*a1.y +                                       // 4
                        q.z*q.z*(a1.x*b0.y + a0.x*b1.y) - q.y*q.z*(a1.x*b0.z + a0.x*b1.z)             // 5
                        - q.x*q.z*(a1.z*b0.y + a0.z*b1.y) + q.x*q.y*(a1.z*b0.z + a0.z*b1.z)           // 5
                        - r.y*q.z*q.z*a1.x + r.z*q.y*q.z*a1.x + r.y*q.x*q.z*a1.z - r.z*q.x*q.y*a1.z,  // 5
                    
                        // c2
                        q.x*q.z*(a2.y*b0.z + a1.y*b1.z + a0.y*b2.z) - q.x*q.y*(a2.z*b0.z + a1.z*b1.z + a0.z*b2.z)  // 3
                        - r.z*q.x*q.z*a2.y + r.z*q.x*q.y*a2.z +                                                    // 3
                        q.y*q.z*(a2.z*b0.x + a1.z*b1.x + a0.z*b2.x) - q.z*q.z*(a2.y*b0.x + a1.y*b1.x + a0.y*b2.x)  // 4
                        - r.x*q.y*q.z*a2.z + r.x*q.z*q.z*a2.y +                                                    // 4
                        q.z*q.z*(a2.x*b0.y + a1.x*b1.y + a0.x*b2.y) - q.y*q.z*(a2.x*b0.z + a1.x*b1.z + a0.x*b2.z)  // 5
                        - q.x*q.z*(a2.z*b0.y + a1.z*b1.y + a0.z*b2.y) + q.x*q.y*(a2.z*b0.z + a1.z*b1.z + a0.z*b2.z)// 5
                        - r.y*q.z*q.z*a2.x + r.z*q.y*q.z*a2.x + r.y*q.x*q.z*a2.z - r.z*q.x*q.y*a2.z,               // 5

                        // c3
                        q.x*q.z*(a3.y*b0.z + a2.y*b1.z + a1.y*b2.z + a0.y*b3.z) - q.x*q.y*(a3.z*b0.z + a2.z*b1.z + a1.z*b2.z + a0.z*b3.z)  // 3
                        - r.z*q.x*q.z*a3.y + r.z*q.x*q.y*a3.z +                                                                            // 3
                        q.y*q.z*(a3.z*b0.x + a2.z*b1.x + a1.z*b2.x + a0.z*b3.x) - q.z*q.z*(a3.y*b0.x + a2.y*b1.x + a1.y*b2.x + a0.y*b3.x)  // 4
                        - r.x*q.y*q.z*a3.z + r.x*q.z*q.z*a3.y +                                                                            // 4
                        q.z*q.z*(a3.x*b0.y + a2.x*b1.y + a1.x*b2.y + a0.x*b3.y) - q.y*q.z*(a3.x*b0.z + a2.x*b1.z + a1.x*b2.z + a0.x*b3.z)  // 5
                        - q.x*q.z*(a3.z*b0.y + a2.z*b1.y + a1.z*b2.y + a0.z*b3.y) + q.x*q.y*(a3.z*b0.z + a2.z*b1.z + a1.z*b2.z + a0.z*b3.z)// 5
                        - r.y*q.z*q.z*a3.x + r.z*q.y*q.z*a3.x + r.y*q.x*q.z*a3.z - r.z*q.x*q.y*a3.z,                                       // 5
                    
                        // c4
                        q.x*q.z*(a3.y*b1.z + a2.y*b2.z + a1.y*b3.z) - q.x*q.y*(a3.z*b1.z + a2.z*b2.z + a1.z*b3.z) +     // 3
                        q.y*q.z*(a3.z*b1.x + a2.z*b2.x + a1.z*b3.x) - q.z*q.z*(a3.y*b1.x + a2.y*b2.x + a1.y*b3.x) +     // 4
                        q.z*q.z*(a3.x*b1.y + a2.x*b2.y + a1.x*b3.y) - q.y*q.z*(a3.x*b1.z + a2.x*b2.z + a1.x*b3.z)       // 5
                        - q.x*q.z*(a3.z*b1.y + a2.z*b2.y + a1.z*b3.y) + q.x*q.y*(a3.z*b1.z + a2.z*b2.z + a1.z*b3.z),    // 5

                        // c5
                        q.x*q.z*(a3.y*b2.z + a2.y*b3.z) - q.x*q.y*(a3.z*b2.z + a2.z*b3.z) +     // 3
                        q.y*q.z*(a3.z*b2.x + a2.z*b3.x) - q.z*q.z*(a3.y*b2.x + a2.y*b3.x) +     // 4
                        q.z*q.z*(a3.x*b2.y + a2.x*b3.y) - q.y*q.z*(a3.x*b2.z + a2.x*b3.z)       // 5
                        - q.x*q.z*(a3.z*b2.y + a2.z*b3.y) + q.x*q.y*(a3.z*b2.z + a2.z*b3.z),    // 5

                        // c6
                        q.x*q.z*a3.y*b3.z - q.x*q.y*a3.z*b3.z +                                           // 3
                        q.y*q.z*a3.z*b3.x - q.z*q.z*a3.y*b3.x +                                           // 4
                        q.z*q.z*a3.x*b3.y - q.y*q.z*a3.x*b3.z - q.x*q.z*a3.z*b3.y + q.x*q.y*a3.z*b3.z} ;  // 5
            int nRoots = PolynomialRoots( 6, vdCoeff, vdRoots) ;
            for ( int w = 0 ; w < nRoots ; ++w) {
               double dU = 0, dV = 0 ;
               if ( vdRoots[w] > 0 - EPS_ZERO  &&  vdRoots[w] < 1 + EPS_ZERO) {
                  dU = vdRoots[w] ;
                  // verifico che non sia una soluzione con molteplicità > 1
                  bool bAlreadyFound = false ;
                  for ( int k = w - 1 ; k >= 0  &&  ! bAlreadyFound ; --k)
                     bAlreadyFound = ( abs( dU - vdRoots[k]) < EPS_PARAM) ;
                  if ( ! bAlreadyFound) {
                     Vector3d vAlpha = a3 * pow(dU, 3) + a2 * pow( dU, 2) + a1 * dU + a0 ;
                     Vector3d vBeta = b3 * pow(dU, 3) + b2 * pow( dU, 2) + b1 * dU + b0 ;
                     double dDen = ( vAlpha.x * q.z - vAlpha.z * q.x) ;
                     if ( abs( dDen) > EPS_ZERO) 
                        dV = ( ( vBeta.z - r.z) * q.x - ( vBeta.x - r.x ) * q.z) / dDen ;
                     else {
                        // se la prima equazione risulta un x/0 allora uso la seconda equazione per trovare il secondo parametro
                        double dDen2 = ( vAlpha.y * q.z - vAlpha.z * q.y) ;
                        dV = ( ( vBeta.z - r.z) * q.y - ( vBeta.y - r.y ) * q.z) / dDen2 ;
                     }
                     if ( dV > - EPS_ZERO  &&  dV < 1 + EPS_ZERO) {
                        Point3d ptBez ;
                        Vector3d vtN ;
                        srf.sBez.GetPointNrmD1D2(dU, dV, ISurfBezier::Side::FROM_MINUS, ISurfBezier::Side::FROM_MINUS, ptBez, vtN) ;
                        vtN *= -1 ;
                        UpdateMaxMin( ptBez, vtN, vInters) ;
                        vSurfInters.push_back( s) ;
                     }
                  }
               }
            }
         }
      }
   }
   return true ;
}

#if false
    #define TEST
#endif

//----------------------------------------------------------------------------
bool
VolZmap::Comp_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtLs, const Vector3d& vtLe,
                            double dHeight, double dMaxRad, double dMinRad, int nToolNum, int n5AxisType)
{
   // tolgo il volume spazzato dal tool durante il movimento
   // Verifica sull'interferenza con lo Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtLs, vtLe, dMaxRad, dMinRad, dHeight, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

   // vettori di riferimento per trovare i punti ausiliari

   int nDegU = 3 ; int nDegV = 1 ;
   int nSpanU = 1 ; int nSpanV = 1 ;
   bool bRat = false ;

   int nSub = 2 ; // numero di bezier di grado 3x1 con cui approssimare il (quasi) semi-cilindro ellissoide che descrive il volume della punta e della cima del tool
   PNTVECTOR d ;
   Vector3d q = Z_AX ;

   int nTotSurf = 4 ;
   if ( n5AxisType == Move5Axis::NO_BASE_INTERS)
      nTotSurf = 2 + nSub * 2 + nSub * 2 + 8 ;  // sup laterali, sup superiori e inferiori, superfici verticali di inizio e fine, superfici di base dei tool
   else if ( n5AxisType == Move5Axis::ACROSS)
      nTotSurf = 2 + nSub * 4 + nSub * 2 + 16 ; // come sopra

   // punti di riferimento sul tool
   // tip del tool
   Point3d ptP1T ;
   Point3d ptP2T ;
   // determino la posizione della punta del tool nella posizione iniziale e in quella finale
   ptP1T = ptS - dHeight * vtLs ;
   ptP2T = ptE - dHeight * vtLe ;
   // determino la direzione di movimento del top del tool e della punta del tool
   Vector3d vtDirTop = ptE - ptS ;
   Vector3d vtDirTip = ptP2T - ptP1T ;
   bool bTopIsPivot = vtDirTop.IsSmall() ;
   bool bTipIsPivot = vtDirTip.IsSmall() ;
   bool bSmallMovement = vtDirTop.Len() < 10 * EPS_SMALL  &&  vtDirTip.Len() < 10 * EPS_SMALL ;
   bool bInverse = ! (bTopIsPivot || bTipIsPivot)  &&  vtDirTop * vtDirTip < 0 ;

   if ( bInverse)
      nTotSurf += 4 ;
   if ( bSmallMovement)
      nTotSurf += 2 ;

   int nSurfInd = 0 ;
   vector<SurfBezForInters> vSurfBez( nTotSurf) ;
   double dSide = 0 ;

   // box dell'intero volume spazzato, nel riferimento object oriented
   BBox3d bbVol ;
   Frame3d frVol ; frVol.Set(ptS, vtLs, vtDirTop) ;

   // punti sul top e tip del tool che servono per costruire le bilineare di congiunzione tra step
   PNTVECTOR vPntTipStartFront(3) ;
   PNTVECTOR vPntTipEndFront(3) ;
   PNTVECTOR vPntTopStartFront(3) ;
   PNTVECTOR vPntTopEndFront(3) ;
   // punti addizionali che servono nei casi che rischiedono più superfici bilineari ( tutti tranne NO_BASE_INTERS)
   PNTVECTOR vPntTipStartBack(3) ;
   PNTVECTOR vPntTipEndBack(3) ;
   PNTVECTOR vPntTopStartBack(3) ;
   PNTVECTOR vPntTopEndBack(3) ;
   if ( nSub > 1) {
      if ( bTopIsPivot)
         vtDirTop = vtDirTip ;
      if ( bTipIsPivot)
         vtDirTip = vtDirTop ;
      // determino in che modo collegare il cilindro iniziale con quello finale
      Vector3d vtTopBaseEnd = vtDirTop - (( vtDirTop * vtLe) * vtLe) ;
      vtTopBaseEnd.Normalize() ;
      vtTopBaseEnd *= dMaxRad ;
      Point3d ptRefEnd = ptE - vtTopBaseEnd ;
      Vector3d vtTopBaseStart = vtDirTop - (( vtDirTop * vtLs) * vtLs) ;
      vtTopBaseStart.Normalize() ;
      vtTopBaseStart *= dMaxRad ;
      Point3d ptRefStart = ptS + vtTopBaseStart ;
      dSide = ( ptRefEnd - ptRefStart) * vtLs ;

      // calcolo anche i vettori per le basi inferiori
      Vector3d vtTipBaseStart = bInverse ? ( vtLs ^ vtDirTip) : -( vtLs ^ vtDirTip) ;
      vtTipBaseStart.Normalize() ;
      vtTipBaseStart *= dMinRad ;
      Vector3d vtTipBaseEnd = bInverse ? ( vtLe ^ vtDirTip) : -( vtLe ^ vtDirTip) ;
      vtTipBaseEnd.Normalize() ;
      vtTipBaseEnd *= dMinRad ;
      // aggiungo il primo punto per ognuno dei gruppi
      vtTopBaseStart.Rotate( vtLs, 90) ;
      vtTopBaseEnd.Rotate( vtLe, 90) ;
      vPntTopStartFront[0] = ptS - vtTopBaseStart ;
      vPntTopEndFront[0] = ptE - vtTopBaseEnd ;
      vPntTipStartFront[0] = ptP1T + vtTipBaseStart ;
      vPntTipEndFront[0] = ptP2T + vtTipBaseEnd ;

      // punti addizionali per superfici bilineari
      vPntTopStartBack[0] = ptS + vtTopBaseStart ;
      vPntTopEndBack[0] = ptE + vtTopBaseEnd ;
      vPntTipStartBack[0] = ptP1T - vtTipBaseStart ;
      vPntTipEndBack[0] = ptP2T - vtTipBaseEnd ;
      double dSubAng = 90 ;
      // girano tutti in verso CCW rispetto alla normale del tool
      for ( int i = 1; i < 3; ++i) {
         // punti sulla base superiore dei cilindri
         // start
         // frontale
         vPntTopStartFront[i] = vPntTopStartFront[i - 1] ;
         vPntTopStartFront[i].Rotate( ptS, vtLs, dSubAng) ;
         // posteriore
         vPntTopStartBack[i] = vPntTopStartBack[i - 1];
         vPntTopStartBack[i].Rotate( ptS, vtLs, dSubAng) ;
         // end
         // frontale
         vPntTopEndFront[i] = vPntTopEndFront[i - 1] ;
         vPntTopEndFront[i].Rotate( ptE, vtLe, dSubAng) ;
         // posteriore
         vPntTopEndBack[i] = vPntTopEndBack[i - 1] ;
         vPntTopEndBack[i].Rotate( ptE, vtLe, dSubAng) ;

         // punti sulla base inferiore dei cilindri
         vPntTipStartFront[i] = vPntTipStartFront[i - 1] ;
         vPntTipStartFront[i].Rotate( ptP1T, vtLs, dSubAng) ;
         vPntTipStartBack[i] = vPntTipStartBack[i - 1] ;
         vPntTipStartBack[i].Rotate( ptP1T, vtLs, dSubAng) ;

         vPntTipEndFront[i] = vPntTipEndFront[i - 1] ;
         vPntTipEndFront[i].Rotate( ptP2T, vtLe, dSubAng) ;
         vPntTipEndBack[i] = vPntTipEndBack[i - 1] ;
         vPntTipEndBack[i].Rotate( ptP2T, vtLe, dSubAng) ;
      }
   }

   vector<PNTVECTOR> vvPtCtrl ;
   if ( ! bSmallMovement) {
      // superficie laterale sinistra
      CurveLine cLineLeftBottom ; cLineLeftBottom.Set( vPntTipEndFront.back(), vPntTipStartFront.back()) ;
      if ( ! cLineLeftBottom.IsValid())
         return false ;
      if ( bInverse)
         cLineLeftBottom.Invert() ;
      PtrOwner<CurveBezier> cBezLeftBottom( GetBasicCurveBezier( LineToBezierCurve( &cLineLeftBottom, nDegU, bRat))) ;
      if ( IsNull( cBezLeftBottom))
         return false ;
      CurveLine cLineLeftTop ; cLineLeftTop.Set( vPntTopEndFront.back(), vPntTopStartFront.back()) ;
      if ( ! cLineLeftTop.IsValid())
         return false ;
      PtrOwner<CurveBezier> cBezLeftTop( GetBasicCurveBezier( LineToBezierCurve( &cLineLeftTop, nDegU, bRat))) ;
      if ( IsNull( cBezLeftTop))
         return false ;
      vvPtCtrl.emplace_back( cBezLeftBottom->GetAllControlPoints()) ;
      PNTVECTOR vPntLeft = cBezLeftTop->GetAllControlPoints() ;
      vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntLeft.begin(), vPntLeft.end()) ;
      // superficie laterale destra
      CurveLine cLineRightBottom ; cLineRightBottom.Set( vPntTipStartFront.front(), vPntTipEndFront.front()) ;
      if ( ! cLineRightBottom.IsValid())
         return false ;
      if ( bInverse)
         cLineRightBottom.Invert() ;
      PtrOwner<CurveBezier> cBezRightBottom( GetBasicCurveBezier( LineToBezierCurve( &cLineRightBottom, nDegU, bRat))) ;
      if ( IsNull( cBezRightBottom))
         return false ;
      CurveLine cLineRightTop ; cLineRightTop.Set( vPntTopStartFront.front(), vPntTopEndFront.front()) ;
      if ( ! cLineRightTop.IsValid())
         return false ;
      PtrOwner<CurveBezier> cBezRightTop( GetBasicCurveBezier( LineToBezierCurve( &cLineRightTop, nDegU, bRat))) ;
      if ( IsNull( cBezRightTop))
         return false ;
      vvPtCtrl.emplace_back( cBezRightBottom->GetAllControlPoints()) ;
      PNTVECTOR vPntRight = cBezRightTop->GetAllControlPoints() ;
      vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntRight.begin(), vPntRight.end()) ;
   }
   if ( nSub == 1) {
      // superficie inferiore
      vvPtCtrl.emplace_back( PNTVECTOR( { vPntTipStartFront.front(), vPntTipStartFront.back(), vPntTipEndFront.front(), vPntTipEndFront.back() })) ;
      // superficie superiore
      vvPtCtrl.emplace_back( PNTVECTOR( { vPntTopStartFront.back(), vPntTopStartFront.front(), vPntTopEndFront.back(), vPntTopEndFront.front() })) ;
   }
   else {
      // costruisco tutti gli archi subito
      // archi inferiori front
      CurveArc cArcTipStartF1, cArcTipEndF1, cArcTipStartF2, cArcTipEndF2 ;
      if ( ! cArcTipStartF1.SetC2PN(ptP1T, vPntTipStartFront[0], vPntTipStartFront[1], vtLs) ||
           ! cArcTipEndF1.SetC2PN(ptP2T, vPntTipEndFront[0], vPntTipEndFront[1], vtLe) ||
           ! cArcTipStartF2.SetC2PN(ptP1T, vPntTipStartFront[1], vPntTipStartFront[2], vtLs) ||
           ! cArcTipEndF2.SetC2PN(ptP2T, vPntTipEndFront[1], vPntTipEndFront[2], vtLe))
         return false ;
      PtrOwner<CurveBezier> cBezTipStartF1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipStartF1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTipEndF1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipEndF1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTipStartF2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipStartF2, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTipEndF2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipEndF2, nDegU, bRat)));
      // archi inferiori back
      CurveArc cArcTipStartB1, cArcTipEndB1, cArcTipStartB2, cArcTipEndB2;
      if ( ! cArcTipStartB1.SetC2PN(ptP1T, vPntTipStartBack[0], vPntTipStartBack[1], vtLs) ||
          ! cArcTipEndB1.SetC2PN(ptP2T, vPntTipEndBack[0], vPntTipEndBack[1], vtLe) ||
          ! cArcTipStartB2.SetC2PN(ptP1T, vPntTipStartBack[1], vPntTipStartBack[2], vtLs) ||
          ! cArcTipEndB2.SetC2PN(ptP2T, vPntTipEndBack[1], vPntTipEndBack[2], vtLe))
         return false ;
      PtrOwner<CurveBezier> cBezTipStartB1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipStartB1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTipEndB1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipEndB1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTipStartB2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipStartB2, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTipEndB2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTipEndB2, nDegU, bRat)));
      if ( IsNull( cBezTipStartB1)  ||  IsNull( cBezTipEndB1)  ||  IsNull( cBezTipStartB2)  ||  IsNull( cBezTipEndB2))
         return false ;
      // archi superiori front
      CurveArc cArcTopStartF1, cArcTopEndF1, cArcTopStartF2, cArcTopEndF2;
      if ( ! cArcTopStartF1.SetC2PN(ptS, vPntTopStartFront[0], vPntTopStartFront[1], vtLs) ||
           ! cArcTopEndF1.SetC2PN(ptE, vPntTopEndFront[0], vPntTopEndFront[1], vtLe) ||
           ! cArcTopStartF2.SetC2PN(ptS, vPntTopStartFront[1], vPntTopStartFront[2], vtLs) ||
           ! cArcTopEndF2.SetC2PN(ptE, vPntTopEndFront[1], vPntTopEndFront[2], vtLe))
         return false ;
      PtrOwner<CurveBezier> cBezTopStartF1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopStartF1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTopEndF1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopEndF1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTopStartF2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopStartF2, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTopEndF2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopEndF2, nDegU, bRat)));
      if ( IsNull( cBezTopStartF1)  ||  IsNull( cBezTopEndF1)  ||  IsNull( cBezTopStartF2)  ||  IsNull( cBezTopEndF2))
         return false ;
      // archi superiori back
      CurveArc cArcTopStartB1, cArcTopEndB1, cArcTopStartB2, cArcTopEndB2;
      if ( ! cArcTopStartB1.SetC2PN(ptS, vPntTopStartBack[0], vPntTopStartBack[1], vtLs) ||
          ! cArcTopEndB1.SetC2PN(ptE, vPntTopEndBack[0], vPntTopEndBack[1], vtLe) ||
          ! cArcTopStartB2.SetC2PN(ptS, vPntTopStartBack[1], vPntTopStartBack[2], vtLs) ||
          ! cArcTopEndB2.SetC2PN(ptE, vPntTopEndBack[1], vPntTopEndBack[2], vtLe))
         return false ;
      PtrOwner<CurveBezier> cBezTopStartB1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopStartB1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTopEndB1(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopEndB1, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTopStartB2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopStartB2, nDegU, bRat)));
      PtrOwner<CurveBezier> cBezTopEndB2(GetBasicCurveBezier(ArcToBezierCurve(&cArcTopEndB2, nDegU, bRat)));
      if ( IsNull( cBezTopStartB1)  ||  IsNull( cBezTopEndB1)  ||  IsNull( cBezTopStartB2)  ||  IsNull( cBezTopEndB2))
         return false ;

      if ( n5AxisType == Move5Axis::NO_BASE_INTERS || n5AxisType == Move5Axis::ACROSS) {
         if ( ! bTipIsPivot) {
            // inferiori
            if ( dSide > 0) {
               PNTVECTOR vPntTipEnd01 = cBezTipStartF1->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.emplace_back( vPntTipEnd01.begin(), vPntTipEnd01.end()) ;
               else
                  vvPtCtrl.emplace_back( vPntTipEnd01.rbegin(), vPntTipEnd01.rend()) ;
               PNTVECTOR vPntTipEnd1 = cBezTipEndF1->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd1.begin(), vPntTipEnd1.end()) ;
               else
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd1.rbegin(), vPntTipEnd1.rend()) ;
               PNTVECTOR vPntTipEnd02 = cBezTipStartF2->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.emplace_back( vPntTipEnd02.begin(), vPntTipEnd02.end()) ;
               else
                  vvPtCtrl.emplace_back( vPntTipEnd02.rbegin(), vPntTipEnd02.rend()) ;
               PNTVECTOR vPntTipEnd2 = cBezTipEndF2->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd2.begin(), vPntTipEnd2.end()) ;
               else
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd2.rbegin(), vPntTipEnd2.rend()) ;
            }
            else {
               PNTVECTOR vPntTipEnd01 = cBezTipStartB1->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.emplace_back( vPntTipEnd01.rbegin(), vPntTipEnd01.rend()) ;
               else
                  vvPtCtrl.emplace_back( vPntTipEnd01.begin(), vPntTipEnd01.end()) ;
               PNTVECTOR vPntTipEnd1 = cBezTipEndB1->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd1.rbegin(), vPntTipEnd1.rend()) ;
               else
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd1.begin(), vPntTipEnd1.end()) ;
               PNTVECTOR vPntTipEnd02 = cBezTipStartB2->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.emplace_back( vPntTipEnd02.rbegin(), vPntTipEnd02.rend()) ;
               else
                  vvPtCtrl.emplace_back( vPntTipEnd02.begin(), vPntTipEnd02.end()) ;
               PNTVECTOR vPntTipEnd2 = cBezTipEndB2->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd2.rbegin(), vPntTipEnd2.rend()) ;
               else
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEnd2.begin(), vPntTipEnd2.end()) ;
            }
         }
         if ( ! bTopIsPivot) {
            // superiori
            if ( dSide > 0) {
               PNTVECTOR vPntTopEnd01 = cBezTopStartB1->GetAllControlPoints() ;
               vvPtCtrl.emplace_back( vPntTopEnd01.begin(), vPntTopEnd01.end()) ;
               PNTVECTOR vPntTopEnd1 = cBezTopEndB1->GetAllControlPoints() ;
               vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEnd1.begin(), vPntTopEnd1.end()) ;
               PNTVECTOR vPntTopEnd02 = cBezTopStartB2->GetAllControlPoints() ;
               vvPtCtrl.emplace_back( vPntTopEnd02.begin(), vPntTopEnd02.end()) ;
               PNTVECTOR vPntTopEnd2 = cBezTopEndB2->GetAllControlPoints() ;
               vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEnd2.begin(), vPntTopEnd2.end()) ;
            }
            else {
               PNTVECTOR vPntTopEnd01 = cBezTopStartF1->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.emplace_back( vPntTopEnd01.rbegin(), vPntTopEnd01.rend()) ;
               else
                  vvPtCtrl.emplace_back( vPntTopEnd01.begin(), vPntTopEnd01.end()) ;
               PNTVECTOR vPntTopEnd1 = cBezTopEndF1->GetAllControlPoints() ;
               if ( ! bInverse) 
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEnd1.rbegin(), vPntTopEnd1.rend()) ;
               else
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEnd1.begin(), vPntTopEnd1.end()) ;
               PNTVECTOR vPntTopEnd02 = cBezTopStartF2->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.emplace_back( vPntTopEnd02.rbegin(), vPntTopEnd02.rend()) ;
               else
                  vvPtCtrl.emplace_back( vPntTopEnd02.begin(), vPntTopEnd02.end()) ;
               PNTVECTOR vPntTopEnd2 = cBezTopEndF2->GetAllControlPoints() ;
               if ( ! bInverse)
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEnd2.rbegin(), vPntTopEnd2.rend()) ;
               else
                  vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEnd2.begin(), vPntTopEnd2.end()) ;
            }
         }
         
         // aggiungo le superfici bilineari anche nell'altro verso sia per il top che per il tip
         if ( n5AxisType == Move5Axis::ACROSS) {
            if ( ! bTipIsPivot) {
               // inferiori
               if ( dSide > 0) {
                  PNTVECTOR vPntTip01 = cBezTipStartB1->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.emplace_back( vPntTip01.rbegin(), vPntTip01.rend()) ;
                  else
                     vvPtCtrl.emplace_back( vPntTip01.begin(), vPntTip01.end()) ;
                  PNTVECTOR vPntTip1 = cBezTipEndB1->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip1.rbegin(), vPntTip1.rend()) ;
                  else 
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip1.begin(), vPntTip1.end()) ;
                  PNTVECTOR vPntTip02 = cBezTipStartB2->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.emplace_back( vPntTip02.rbegin(), vPntTip02.rend()) ;
                  else
                     vvPtCtrl.emplace_back( vPntTip02.begin(), vPntTip02.end()) ;
                  PNTVECTOR vPntTip2 = cBezTipEndB2->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip2.rbegin(), vPntTip2.rend()) ;
                  else
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip2.begin(), vPntTip2.end()) ;
               }
               else {
                  PNTVECTOR vPntTip01 = cBezTipStartF1->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.emplace_back( vPntTip01.begin(), vPntTip01.end()) ;
                  else
                     vvPtCtrl.emplace_back( vPntTip01.rbegin(), vPntTip01.rend()) ;
                  PNTVECTOR vPntTip1 = cBezTipEndF1->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip1.begin(), vPntTip1.end()) ;
                  else
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip1.rbegin(), vPntTip1.rend()) ;
                  PNTVECTOR vPntTip02 = cBezTipStartF2->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.emplace_back( vPntTip02.begin(), vPntTip02.end()) ;
                  else
                     vvPtCtrl.emplace_back( vPntTip02.rbegin(), vPntTip02.rend()) ;
                  PNTVECTOR vPntTip2 = cBezTipEndF2->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip2.begin(), vPntTip2.end()) ;
                  else
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTip2.rbegin(), vPntTip2.rend()) ;
               }
            }
            
            if ( ! bTopIsPivot) {
               // superiori
               if ( dSide > 0) {
                  PNTVECTOR vPntTop01 = cBezTopStartF1->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.emplace_back( vPntTop01.rbegin(), vPntTop01.rend()) ;
                  else
                     vvPtCtrl.emplace_back( vPntTop01.begin(), vPntTop01.end()) ;
                  PNTVECTOR vPntTop1 = cBezTopEndF1->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTop1.rbegin(), vPntTop1.rend()) ;
                  else
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTop1.begin(), vPntTop1.end()) ;
                  PNTVECTOR vPntTop02 = cBezTopStartF2->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.emplace_back( vPntTop02.rbegin(), vPntTop02.rend()) ;
                  else
                     vvPtCtrl.emplace_back( vPntTop02.begin(), vPntTop02.end()) ;
                  PNTVECTOR vPntTop2 = cBezTopEndF2->GetAllControlPoints() ;
                  if ( ! bInverse)
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTop2.rbegin(), vPntTop2.rend()) ;
                  else
                     vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTop2.begin(), vPntTop2.end()) ;
               }
               else {
                  vvPtCtrl.emplace_back(cBezTopStartB1->GetAllControlPoints());
                  PNTVECTOR vPntTop1 = cBezTopEndB1->GetAllControlPoints();
                  vvPtCtrl.back().insert(vvPtCtrl.back().end(), vPntTop1.begin(), vPntTop1.end());
                  vvPtCtrl.emplace_back(cBezTopStartB2->GetAllControlPoints());
                  PNTVECTOR vPntTop2 = cBezTopEndB2->GetAllControlPoints();
                  vvPtCtrl.back().insert(vvPtCtrl.back().end(), vPntTop2.begin(), vPntTop2.end());
               }
            }
         }
      }

      // chiudo il volume con le superfici verticali e le basi dei tool

      // chiudo il volume con le superici verticali end front 1
      vvPtCtrl.emplace_back( cBezTipEndF1->GetAllControlPoints()) ;
      PNTVECTOR vPntEndF1 = cBezTopEndF1->GetAllControlPoints() ;
      vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntEndF1.begin(), vPntEndF1.end()) ;
      // chiudo il volume con le superici verticali end front 2
      vvPtCtrl.emplace_back( cBezTipEndF2->GetAllControlPoints()) ;
      PNTVECTOR vPntEndF2 = cBezTopEndF2->GetAllControlPoints() ;
      vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntEndF2.begin(), vPntEndF2.end()) ;
      if ( bInverse  ||  bSmallMovement) {
         // chiudo il volume con le superici verticali end back 1
         vvPtCtrl.emplace_back( cBezTipEndB1->GetAllControlPoints()) ;
         PNTVECTOR vPntEndB1 = cBezTopEndB1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntEndB1.begin(), vPntEndB1.end()) ;
         // chiudo il volume con le superici verticali end back 2
         vvPtCtrl.emplace_back( cBezTipEndB2->GetAllControlPoints()) ;
         PNTVECTOR vPntEndB2 = cBezTopEndB2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntEndB2.begin(), vPntEndB2.end()) ;
      }

      // chiudo il volume con le superici verticali start back 1
      vvPtCtrl.emplace_back( cBezTipStartB1->GetAllControlPoints()) ;
      PNTVECTOR vPntStartB1 = cBezTopStartB1->GetAllControlPoints() ;
      vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntStartB1.begin(), vPntStartB1.end()) ;
      // chiudo il volume con le superfici verticali start back 2
      vvPtCtrl.emplace_back( cBezTipStartB2->GetAllControlPoints()) ;
      PNTVECTOR vPntStartB2 = cBezTopStartB2->GetAllControlPoints() ;
      vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntStartB2.begin(), vPntStartB2.end()) ;
      if ( bInverse   ||  bSmallMovement) {
         // chiudo il volume con le superici verticali start front 1
         vvPtCtrl.emplace_back( cBezTipStartF1->GetAllControlPoints()) ;
         PNTVECTOR vPntStartF1 = cBezTopStartF1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntStartF1.begin(), vPntStartF1.end()) ;
         // chiudo il volume con le superfici verticali start front 2
         vvPtCtrl.emplace_back( cBezTipStartF2->GetAllControlPoints()) ;
         PNTVECTOR vPntStartF2 = cBezTopStartF2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntStartF2.begin(), vPntStartF2.end()) ;
      }

      // superfici di base dei tool
      if ( ! ( n5AxisType == Move5Axis::NO_BASE_INTERS  &&  dSide < 0)) {
         // start back tip
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP1T, ptP1T, ptP1T, ptP1T }) ;
         PNTVECTOR vPntTipStartBack1 = cBezTipStartB1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipStartBack1.begin(), vPntTipStartBack1.end()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP1T, ptP1T, ptP1T, ptP1T }) ;
         PNTVECTOR vPntTipStartBack2 = cBezTipStartB2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipStartBack2.begin(), vPntTipStartBack2.end()) ;
         // start front tip
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP1T, ptP1T, ptP1T, ptP1T }) ;
         PNTVECTOR vPntTipStartFront1 = cBezTipStartF1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipStartFront1.begin(), vPntTipStartFront1.end()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP1T, ptP1T, ptP1T, ptP1T }) ;
         PNTVECTOR vPntTipStartFront2 = cBezTipStartF2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipStartFront2.begin(), vPntTipStartFront2.end()) ;
      }
      if ( ! ( n5AxisType == Move5Axis::NO_BASE_INTERS  &&  dSide > 0)) {
         // end front tip
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP2T, ptP2T, ptP2T, ptP2T }) ;
         PNTVECTOR vPntTipEndFront1 = cBezTipEndF1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEndFront1.begin(), vPntTipEndFront1.end()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP2T, ptP2T, ptP2T, ptP2T }) ;
         PNTVECTOR vPntTipEndFront2 = cBezTipEndF2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEndFront2.begin(), vPntTipEndFront2.end()) ;
         // end back tip
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP2T, ptP2T, ptP2T, ptP2T }) ;
         PNTVECTOR vPntTipEndBack1 = cBezTipEndB1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEndBack1.begin(), vPntTipEndBack1.end()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptP2T, ptP2T, ptP2T, ptP2T }) ;
         PNTVECTOR vPntTipEndBack2 = cBezTipEndB2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTipEndBack2.begin(), vPntTipEndBack2.end()) ;
      }

      if ( ! ( n5AxisType == Move5Axis::NO_BASE_INTERS  &&  dSide > 0)) {
         // start back top
         vvPtCtrl.emplace_back( PNTVECTOR{ ptS, ptS, ptS, ptS }) ;
         PNTVECTOR vPntTopStartBack1 = cBezTopStartB1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopStartBack1.rbegin(), vPntTopStartBack1.rend()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptS, ptS, ptS, ptS }) ;
         PNTVECTOR vPntTopStartBack2 = cBezTopStartB2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopStartBack2.rbegin(), vPntTopStartBack2.rend()) ;
         // start front top
         vvPtCtrl.emplace_back( PNTVECTOR{ ptS, ptS, ptS, ptS }) ;
         PNTVECTOR vPntTopStartFront1 = cBezTopStartF1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopStartFront1.rbegin(), vPntTopStartFront1.rend()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptS, ptS, ptS, ptS }) ;
         PNTVECTOR vPntTopStartFront2 = cBezTopStartF2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopStartFront2.rbegin(), vPntTopStartFront2.rend()) ;
      }
      if ( ! ( n5AxisType == Move5Axis::NO_BASE_INTERS  &&  dSide < 0)) {
         // end front top
         vvPtCtrl.emplace_back( PNTVECTOR{ ptE, ptE, ptE, ptE }) ;
         PNTVECTOR vPntTopEndFront1 = cBezTopEndF1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEndFront1.rbegin(), vPntTopEndFront1.rend()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptE, ptE, ptE, ptE }) ;
         PNTVECTOR vPntTopEndFront2 = cBezTopEndF2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEndFront2.rbegin(), vPntTopEndFront2.rend()) ;
         // end back top
         vvPtCtrl.emplace_back( PNTVECTOR{ ptE, ptE, ptE, ptE }) ;
         PNTVECTOR vPntTopEndBack1 = cBezTopEndB1->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEndBack1.rbegin(), vPntTopEndBack1.rend()) ;
         vvPtCtrl.emplace_back( PNTVECTOR{ ptE, ptE, ptE, ptE }) ;
         PNTVECTOR vPntTopEndBack2 = cBezTopEndB2->GetAllControlPoints() ;
         vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntTopEndBack2.rbegin(), vPntTopEndBack2.rend()) ;
      }
   }

   // inizializzo le superfici bilineari e i parametri per le intersezioni
   for ( int z = 0 ; z < ssize( vvPtCtrl) ; ++z) {
      vSurfBez[nSurfInd].sBez.Init( nDegU, nDegV, nSpanU, nSpanV, bRat) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 0, vvPtCtrl[z][0]) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 1, vvPtCtrl[z][1]) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 2, vvPtCtrl[z][2]) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 3, vvPtCtrl[z][3]) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 4, vvPtCtrl[z][4]) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 5, vvPtCtrl[z][5]) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 6, vvPtCtrl[z][6]) ;
      vSurfBez[nSurfInd].sBez.SetControlPoint( 7, vvPtCtrl[z][7]) ;

#if SAVETRIMMINGTOOL
      if ( nGrid == 0)
         vGeo.push_back( vSurfBez[nSurfInd].sBez.Clone()) ;
#endif

      Vector3d A = vvPtCtrl[z][4] - vvPtCtrl[z][0] ;
      Vector3d B = vvPtCtrl[z][5] - vvPtCtrl[z][1] ;
      Vector3d C = vvPtCtrl[z][6] - vvPtCtrl[z][2] ;
      Vector3d D = vvPtCtrl[z][7] - vvPtCtrl[z][3] ;
      Vector3d E = vvPtCtrl[z][0] - ORIG ;
      Vector3d F = vvPtCtrl[z][1] - ORIG ;
      Vector3d G = vvPtCtrl[z][2] - ORIG ;
      Vector3d H = vvPtCtrl[z][3] - ORIG ;

      vSurfBez[nSurfInd].a3 = -A + 3 * B - 3 * C + D ;
      vSurfBez[nSurfInd].a2 = 3 * A - 6 * B + 3 * C ;
      vSurfBez[nSurfInd].a1 = -3 * A + 3 * B ;
      vSurfBez[nSurfInd].a0 = A ;

      vSurfBez[nSurfInd].b3 = -E + 3 * F - 3 * G + H ;
      vSurfBez[nSurfInd].b2 = 3 * E - 6 * F + 3 * G ;
      vSurfBez[nSurfInd].b1 = -3 * E + 3 * F ;
      vSurfBez[nSurfInd].b0 = E ;

      Vector3d vtDirZ = vvPtCtrl[z][4] - vvPtCtrl[z][0] ;
      Vector3d vtDirX = vvPtCtrl[z][3] - vvPtCtrl[z][0] ;

      // devo gestire il caso in cui uno dei due vettori sia == 0
      if (vtDirZ.IsSmall()) {
         vtDirZ = vvPtCtrl[z][7] - vvPtCtrl[z][4];
      }
      if (vtDirX.IsSmall()) {
         vtDirX = vvPtCtrl[z][7] - vvPtCtrl[z][3];
      }
      
      // calcolo il box in un riferimento che usi come asse x la direzione P10 - P00 o P11 - P01 (  proiettata sul piano perperndicolare a Z)
      if ( vSurfBez[nSurfInd].frBox.Set( ORIG, vtDirZ, vtDirX)) {
         // porto tutti i punti in quel riferimento e calcolo il box
         PNTVECTOR vPtCtrlLoc = vvPtCtrl[z] ;
         for ( int p = 0 ; p < int( vPtCtrlLoc.size()) ; ++p)
            vPtCtrlLoc[p].ToLoc( vSurfBez[nSurfInd].frBox) ;
         vSurfBez[nSurfInd].bbSurfOriented.Add( vPtCtrlLoc) ;
      }

      // aggiungo i punti al box del volume spazzato
      PNTVECTOR vPtCtrlLoc = vvPtCtrl[z] ;
      for (int p = 0; p < int(vPtCtrlLoc.size()); ++p)
         vPtCtrlLoc[p].ToLoc(frVol);
      bbVol.Add(vPtCtrlLoc) ;

      ++ nSurfInd ;
   }

#if SAVETRIMMINGTOOL
   if ( nGrid == 0)
      SaveGeoObj( vGeo, "D:\\Temp\\VirtualMilling\\5axisAdvanced\\marmo sottosquadra\\volume.nge") ;
#endif

   // scorro tutti gli spilloni interessati
   int j = 0 ;
   int nLastForwardJ = -1 ;
   bool bUseOnlyExtremes = false ;
   bool bFirstAmbiguousCaseType = false ;
   bool bForward = true ;
   bool bAllSameType = false ;
   struct IntervalsToSubtract {
      int i = 0 ;
      int j = 0 ;
      bool bUseOnlyExtremes = false ;
      PNTVEC3DVECTOR vInters ;
      INTINTVECTOR vStartEnds ;
      IntervalsToSubtract( int nI, int nJ, PNTVEC3DVECTOR& vPntInt, INTINTVECTOR& vSE, bool bUseExtremes) : i( nI), j( nJ), bUseOnlyExtremes( bUseExtremes), vInters( vPntInt), vStartEnds( vSE) {}
   } ;
   vector<IntervalsToSubtract> vIntervalsToSubtr ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      nLastForwardJ = -1 ;
      j = nStartJ ;
      bAllSameType = false ;
      bForward = true ;
      bFirstAmbiguousCaseType = false ;
      while ( j <= nEndJ  &&  j > nLastForwardJ) {
         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;
         Point3d r( dX, dY, 0) ;
         PNTVEC3DVECTOR vInters ;
         INTINTVECTOR vStartEnds ;

         INTVECTOR vSurfInters ;
         int nPos = j * m_nNx[nGrid] + i ;
         vector<Data>& vDexel = m_Values[nGrid][nPos] ;
         DBLDBLVECTOR vInterv, vEmpty ;
         for ( int k = 0 ; k < int(vDexel.size()) ; ++k )
            vInterv.emplace_back( vDexel[k].dMin, vDexel[k].dMax) ;

         if ( vDexel.size() != 0) {
            IntersLineBezierSurfSet( r, q, vSurfBez, bbVol, frVol, vInters, vSurfInters, vtLs, vInterv) ;

            if ( vInters.size() > 2) {
               SortGroupInters( vInters, vStartEnds, Z_AX) ;
               if ( bForward  &&  vStartEnds.size() > 1) {
                  // se ho più di un intervallo da togliere allora devo capire se sono dentro il volume spazzato dal tool o no
                  nLastForwardJ = j ;
                  j = nEndJ + 1 ;
                  bForward = false ;
               }
               if ( ! bForward  &&  vStartEnds.size() > 1) {
                  // salvo la prima intersezione dubbia e comincio a scorrere al contrario per trovare l'ultima e capire se è dello stesso tipo della prima

                  if ( ! bAllSameType) {
                     bUseOnlyExtremes = false ;

                     // calcolo le intersezioni anche sugli altri due spilloni passanti per un punto a metà tra due dei vari intervalli
                     // ho almeno due intervalli; prendo un punto a metà tra la fine del primo e l'inzio del secondo
                     Point3d ptLineStart = (vInters[vStartEnds[0].second].first + vInters[vStartEnds[1].first].first ) / 2 ;
                     Vector3d vtLineStart = X_AX ;
                     PNTVEC3DVECTOR vIntersX ;
                     INTVECTOR vSurfX ;
                     INTINTVECTOR vStartEndsX ;
                     bool bXInclude = false ;
                     IntersLineBezierSurfSet( ptLineStart, vtLineStart, vSurfBez, bbVol, frVol, vIntersX, vSurfX, V_NULL, vEmpty) ;
                     if ( vIntersX.size() > 1) {
                        SortGroupInters( vIntersX, vStartEndsX, X_AX) ;
                        if ( vStartEndsX.size() != 0)
                           // se ho più di una intersezione e il punto di studio è compreso tra questi punti allora le info lungo questa direzione mi dicono che sono interno al volume spazzato
                           bXInclude = ( vIntersX[vStartEndsX.front().first].first.x < ptLineStart.x  &&
                                         vIntersX[vStartEndsX.back().second].first.x > ptLineStart.x) ;
                     }
               
                     vtLineStart = Y_AX ;
                     PNTVEC3DVECTOR vIntersY ;
                     INTVECTOR vSurfY ;
                     INTINTVECTOR vStartEndsY ;
                     bool bYInclude = false ;
                     IntersLineBezierSurfSet( ptLineStart, vtLineStart, vSurfBez, bbVol, frVol, vIntersY, vSurfY, V_NULL, vEmpty) ;
                     if ( vIntersY.size() > 1) {
                        SortGroupInters( vIntersY, vStartEndsY, Y_AX) ;
                        if ( vStartEndsY.size() != 0)
                           // se ho più di una intersezione e il punto di studio è compreso tra questi punti allora le info lungo questa direzione mi dicono che sono interno al volume spazzato
                           bYInclude = ( vIntersY[vStartEndsY.front().first].first.y < ptLineStart.y  &&
                                         vIntersY[vStartEndsY.back().second].first.y > ptLineStart.y) ;
                     }

                     // se anche gli spilloni nelle altre due direzioni fanno intersezione sia a destra che a sinistra rispetto al punto a metà tra gli intervalli, allora sono all'interno del volume
                     if ( bXInclude  &&  bYInclude)
                        bUseOnlyExtremes = true ;
                  }

                  int nJToSave = j ;
                  if ( j == nEndJ + 1) {
                     nJToSave = nLastForwardJ ;
                     bFirstAmbiguousCaseType = bUseOnlyExtremes ;
                  }
                  else {
                     // se ho trovato un caso ambiguo ( scorrendo al contrario) che è uguale al primo che ho trovato scorrendo dritto allora posso considerare tutti gli spilloni restanti di
                     // questo tipo e calcolare solo le intersezioni
                     if ( bUseOnlyExtremes == bFirstAmbiguousCaseType)
                        bAllSameType = true ;
                  }

                  if ( ! bAllSameType)
                     vIntervalsToSubtr.emplace_back( i, nJToSave, vInters, vStartEnds, bUseOnlyExtremes) ;
                  else {
                     bUseOnlyExtremes = bFirstAmbiguousCaseType ;
                     if ( bUseOnlyExtremes)
                        SubtractIntervals( nGrid, i, j, vInters.front().first.z, vInters.back().first.z,
                                                        vInters.front().second, vInters.back().second, nToolNum) ;
                     else {
                        for ( auto p : vStartEnds)
                           SubtractIntervals( nGrid, i, j, vInters[p.first].first.z, vInters[p.second].first.z,
                                                           vInters[p.first].second, vInters[p.second].second, nToolNum) ;
                     }
                  }
               }
               else {
                  for ( auto p : vStartEnds)
                     SubtractIntervals( nGrid, i, j, vInters[p.first].first.z, vInters[p.second].first.z,
                                                     vInters[p.first].second, vInters[p.second].second, nToolNum) ;
               }
            }
            else if ( vInters.size() == 2) {
               vStartEnds.push_back(INTINT(0, 1)) ;
               SubtractIntervals( nGrid, i, j, vInters.front().first.z, vInters.back().first.z,
                                               vInters.front().second, vInters.back().second, nToolNum) ;
            }
            else if ( vInters.size() == 1) {
               // se trovo solo un'intersezione è una tangenza tra spillone e una superficie
            }
         }

         if ( bForward)
            ++j ;
         else
            --j ;
      }
   }

   for ( IntervalsToSubtract& intToSub : vIntervalsToSubtr) {
      if ( intToSub.bUseOnlyExtremes)
         SubtractIntervals( nGrid, intToSub.i, intToSub.j, intToSub.vInters.front().first.z, intToSub.vInters.back().first.z,
                                                           intToSub.vInters.front().second, intToSub.vInters.back().second, nToolNum) ;
      else {
        // scorro le intersezione su questo spillone togliendo gli intervalli usando vStartEnds
         for ( int z = 0 ; z < int( intToSub.vStartEnds.size()) ; ++z) {
            int nStart = intToSub.vStartEnds[z].first ;
            int nEnd = intToSub.vStartEnds[z].second ;
            SubtractIntervals( nGrid, intToSub.i, intToSub.j, intToSub.vInters[nStart].first.z, intToSub.vInters[nEnd].first.z,
                                                              intToSub.vInters[nStart].second, intToSub.vInters[nEnd].second, nToolNum) ;
         }
      }
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CompCyl_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtLs, const Vector3d& vtLe,
                               double dHeight, double dRadius, int nToolNum, int n5AxisType)
{
    // tolgo il volume spazzato dal tool durante il movimento
    return Comp_5AxisMilling( nGrid, ptS, ptE, vtLs, vtLe, dHeight, dRadius, dRadius, nToolNum, n5AxisType) ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Cyl_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtLs, const Vector3d& vtLe, int nToolNum, double dHeightCorr, int n5AxisType)
{
    // tolgo il volume dei cilindri all'inizio e alla fine del tratto e poi uso delle bilineari per approssimare il volume spazzato

    // Controllo utensile
    if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
        return false ;
    // recupero le info del tool
    Tool& CurrTool = m_vTool[m_nCurrTool] ;
    double dHeight = CurrTool.GetHeigth() - dHeightCorr ;
    double dRadius = CurrTool.GetRadius() ;

    return CompCyl_5AxisMilling( nGrid, ptS, ptE, vtLs, vtLe, dHeight, dRadius, nToolNum, n5AxisType) ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CylBall_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtLs, const Vector3d& vtLe, int nToolNum, int n5AxisType)
{
    // Controllo utensile
    if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
        return false ;
    Tool& CurrTool = m_vTool[m_nCurrTool] ;
    double dHeight = CurrTool.GetHeigth() - CurrTool.GetTipRadius() ;
    double dRadius = CurrTool.GetRadius() ;
    CompCyl_5AxisMilling( nGrid, ptS, ptE, vtLs, vtLe, dHeight, dRadius, nToolNum, n5AxisType) ;

    // devo poi togliere la sfera tip iniziale, la sfera tip finale e il cilindro del volume spazzato
    Point3d ptTipS = ptS - vtLs * ( CurrTool.GetHeigth()) ;
    Point3d ptTipE = ptE - vtLe * ( CurrTool.GetHeigth()) ;
    CompBall_Milling( nGrid, ptTipS, ptTipE, CurrTool.GetRadius(), CurrTool.GetToolNum()) ;
    return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CompConus_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtLs, const Vector3d& vtLe, double dHei, double dMaxRad, double dMinRad,
                                 bool bTapB, bool bTapT, const Vector3d& vtArcNormMaxR, const Vector3d& vtArcNormMinR, int nToolNum, int n5AxisType)
{
    // come per le altre funzioni che lavorano con i coni, se il cono è inverso ( che va allargandosi andando verso il fondo del tool), allora i vtL passati sono invertiti rispetto a quelli
    // reali del tool e i punti ptS e ptE sono invertiti( così come dMaxRad e dMinRad)

    // al momento i bool bTapB e bTapT vengono ignorati e di default si crea un volume chiuso con anche le superfici superiore e inferiore.

    // Controllo utensile
    if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
        return false ;

    // tolgo il valume spazzato dal tool durante il movimento
    return Comp_5AxisMilling( nGrid, ptS, ptE, vtLs, vtLe, dHei, dMaxRad, dMinRad, nToolNum, n5AxisType) ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Conus_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtLs, const Vector3d& vtLe, int nToolNum, int n5AxisType)
{
    // Controllo utensile
    if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
        return false ;
    // recupero le info del tool
    Tool& CurrTool = m_vTool[m_nCurrTool] ;
    double dHeight = CurrTool.GetHeigth() ;
    double dRadius = CurrTool.GetRadius() ;
    double dTipRadius = CurrTool.GetTipRadius() ;

    double dStemHeigth = dHeight - CurrTool.GetTipHeigth() ;

    // elimino la parte del volume spazzato dalla parte cilindrica del tool
    Cyl_5AxisMilling( nGrid, ptS, ptE, vtLs, vtLe, nToolNum, CurrTool.GetTipHeigth(), n5AxisType) ;

    // elimino la parte spazzata dalla punta conica del tool
    if ( CurrTool.GetTipRadius() < dRadius) {
        // Trapano
        Point3d ptSConus = ptS - dStemHeigth * vtLs ;
        Point3d ptEConus = ptE - dStemHeigth * vtLe ;
        CompConus_5AxisMilling( nGrid, ptSConus, ptEConus, vtLs, vtLe, dHeight,
                                dRadius, dTipRadius, true, false, V_NULL, V_NULL, CurrTool.GetToolNum(), n5AxisType) ;
    }
    else {
        double dHeight = CurrTool.GetHeigth() ;
        Point3d ptSInvertedConus = ptS - dHeight * vtLs ;
        Point3d ptEInvertedConus = ptE - dHeight * vtLe ;
        Vector3d vNewVtLs = - vtLs ;
        Vector3d vNewVtLe = - vtLe ;
        CompConus_5AxisMilling( nGrid, ptSInvertedConus, ptEInvertedConus, vNewVtLs, vNewVtLe, dHeight,
                                dTipRadius, dRadius, false, true, V_NULL, V_NULL, CurrTool.GetToolNum(), n5AxisType) ;
    }

    return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::SelectGeneralMotion( int nGrid, const Point3d& ptPs, const Point3d& ptPe, const Vector3d& vtLs, const Vector3d& vtLe, int n5AxisType)
{
    // Controllo utensile
    if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
        return false ;
    Tool& CurrTool = m_vTool[m_nCurrTool] ;

    switch ( CurrTool.GetType()) {
    case Tool::GEN :
        return GenTool_5AxisMilling( nGrid, ptPs, ptPe, vtLs, vtLe, CurrTool.GetToolNum(), n5AxisType) ;
    case Tool::CYLMILL :
        return Cyl_5AxisMilling( nGrid, ptPs, ptPe, vtLs, vtLe, CurrTool.GetToolNum(), 0, n5AxisType) ;
    case Tool::BALLMILL :
        return CylBall_5AxisMilling( nGrid, ptPs, ptPe, vtLs, vtLe, CurrTool.GetToolNum(), n5AxisType) ;
    case Tool::CONEMILL :
        return Conus_5AxisMilling( nGrid, ptPs, ptPe, vtLs, vtLe, CurrTool.GetToolNum(), n5AxisType) ;
    case Tool::MORTISER :
        return false ; // in realtà potremmo accettare un moto con un angolo solo along
    case Tool::CHISEL :
        return false ;
    }

    return false ;
}

//----------------------------------------------------------------------------
bool
VolZmap::MillingGeneralMotionStep( const Point3d& ptPs, const Vector3d& vtDs, const Vector3d& vtAs,
                                   const Point3d& ptPe, const Vector3d& vtDe, const Vector3d& vtAe)
{
  // Flag per impostare vecchia (approssimativa) o nuova modalità di calcolo
   constexpr bool OLD_LINEAR = false ;

  // Deve essere definito l'utensile corrente
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;

  // Angoli di rotazione longitudinale e trasversale massimi per singolo step
   const double ANG_ALONG_STEP = 1.0 ;
   const double ANG_ACROSS_STEP = ( OLD_LINEAR ? 0.04 : 1.0) ;

  // Calcolo angoli di rotazione utensile longitudinale e trasversale rispetto al movimento per eventuale suddivisione
   double dAlongAngDeg, dAcrossAngDeg ;
   GetAlongAcrossRotation( vtDs, vtDe, ptPe - ptPs, dAlongAngDeg, dAcrossAngDeg) ;

  // Calcolo numero degli step di movimento
   int nStepCnt = int( max( { abs( dAlongAngDeg) / ANG_ALONG_STEP, abs( dAcrossAngDeg) / ANG_ACROSS_STEP, 1.})) ;

   bool bOk = true ;

  // Divido il movimento in tratti lineari con direzione utensile costante (approssimazione a scaletta)
   if ( OLD_LINEAR) {
     // Calcolo coefficiente di riduzione movimenti con direzione costante per evitare extra tagli 
      double dToolLen = m_vTool[m_nCurrTool].GetHeigth() ;
      double dToolCrad = m_vTool[m_nCurrTool].GetCornRadius() ;
      Vector3d vtBase = ptPe - ptPs ;
      double dBaseLen = vtBase.Len() ;
      Vector3d vtTip = ptPe - dToolLen * vtDe - ( ptPs - dToolLen * vtDs) ;
      double dTipLen = vtTip.Len() ;
      double dK = ( vtBase * vtTip > EPS_SMALL ?  dTipLen / dBaseLen : 0) ;
      if ( dTipLen / nStepCnt < 0.1 * dToolCrad)
         dK = 0 ;
      for ( int i = 0 ; i <= nStepCnt && bOk ; ++ i) {
         double dStCoeff, dEnCoeff, dDirCoeff ;
         if ( i == 0) {
            dStCoeff = 0 ;
            dEnCoeff = dK / nStepCnt ;
            dDirCoeff = 0 ;
         }
         else if ( i < nStepCnt) {
            dStCoeff = ( i - dK) / nStepCnt ;
            dEnCoeff = ( i + dK) / nStepCnt ;
            dDirCoeff = double( i) / nStepCnt ;
         }
         else {
            dStCoeff = ( nStepCnt - dK) / nStepCnt ;
            dEnCoeff = 1 ;
            dDirCoeff = 1 ;
         }
         Point3d ptSt = Media( ptPs, ptPe, dStCoeff) ;
         Point3d ptEn = Media( ptPs, ptPe, dEnCoeff) ;
         Vector3d vtD = Media( vtDs, vtDe, dDirCoeff) ; vtD.Normalize() ;
         Vector3d vtA = Media( vtAs, vtAe, dDirCoeff) ; vtA.Normalize() ;
         bOk = bOk && MillingTranslationStep( ptSt, ptEn, vtD, vtA) ;
      }
     // esco
      return bOk ;
   }

  // Divido il movimento in tratti lineari con direzione utensile variabile linearmente (approssimazione lineare)

  // Determino il tipo di movimento 5 assi
   Vector3d vtDir = ptPe - ptPs ;
   double dH = vtDir * vtDs ;
   double dHStep = abs( dH / nStepCnt) ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;
   double dRad = CurrTool.GetRadius() ;
   bool bAcross = ( abs( dAcrossAngDeg) > EPS_SMALL) ;
   bool bAcrossInters = false ;
   if ( vtDe * vtDir < vtDs * vtDir)
      dAlongAngDeg *= -1 ;
   bool bAlong = ( abs( dAlongAngDeg) > EPS_SMALL) ;
   bool bAlongInters = false ;
   if ( bAcross  &&  bAlong) {
      Vector3d vtInters = vtDs ^ vtDe ;
      Vector3d vtMaxDir = vtInters ^ vtDe ;
      if ( ! vtMaxDir.Normalize())
         return false ;
      vtMaxDir *= dRad ;
      if ( abs( vtMaxDir * vtDs) > dHStep) {
         bAcrossInters = true ;
         bAlongInters = true ;
      }
   }
   else if ( bAcross)
      bAcrossInters = ( dRad * sin( dAcrossAngDeg * DEGTORAD) > dHStep) ;
   else if ( bAlong)
      bAlongInters = ( dRad * sin( abs( dAlongAngDeg) * DEGTORAD) > dHStep) ;

   int n5AxisType = Move5Axis::NO_BASE_INTERS ;
   if ( bAcross  &&  bAlong  &&  ( bAcrossInters  ||  bAlongInters))
      n5AxisType = Move5Axis::ACROSS ;
   else if ( bAcross) {
      if ( bAcrossInters)
         n5AxisType = Move5Axis::ACROSS ;
      else
         n5AxisType = Move5Axis::NO_BASE_INTERS ;
   }
   else if ( bAlong) {
       if ( bAlongInters)
           n5AxisType = Move5Axis::ACROSS ;
       else
           n5AxisType = Move5Axis::NO_BASE_INTERS ;
   }

    Point3d ptLs[N_MAPS] ;
    Point3d ptLe[N_MAPS] ;
    Vector3d vtLs[N_MAPS] ;
    Vector3d vtLe[N_MAPS] ;

   // calcolo gli step (anticipo un poco gli inizi intermedi)
   for ( int i = 0 ; i < nStepCnt ; ++i) {
      double dCoeffS = max(( i - 0.05) / nStepCnt, 0.) ;
      double dCoeffE = min(( i + 1.) / nStepCnt, 1.) ;
      Point3d ptSti = Media( ptPs, ptPe, dCoeffS) ;
      Vector3d vtDSi = Media( vtDs, vtDe, dCoeffS) ; vtDSi.Normalize() ;
      Point3d ptEni = Media( ptPs, ptPe, dCoeffE) ;
      Vector3d vtDEi = Media( vtDs, vtDe, dCoeffE) ; vtDEi.Normalize() ;

      InitializePointsAndVectors( ptSti, ptEni, vtDSi, vtDEi, ptLs, ptLe, vtLs, vtLe) ;

      // Standard è multithread
      constexpr bool MULTITHREAD = false ;
      if ( MULTITHREAD) {
         // Ciclo sulle mappe
         vector<future<bool>> vRes( m_nMapNum) ;

         for ( int j = 0 ; j < m_nMapNum ; ++j) {
             vRes[j] = async(launch::async, &VolZmap::SelectGeneralMotion, this, j, cref(ptLs[j]), cref(ptLe[j]), cref(vtLs[j]), cref(vtLe[j]), n5AxisType) ;
         }

         int nTerminated = 0;
         while ( nTerminated < m_nMapNum) {
            for ( int j = 0 ; j < m_nMapNum ; ++j) {
               if ( vRes[j].valid()  &&  vRes[j].wait_for(chrono::nanoseconds{ 1 }) == future_status::ready) {
                  bOk = vRes[j].get() && bOk ;
                  ++nTerminated ;
               }
            }
         }
      }

      // !!!! NON MULTITHREAD : SOLO PER DEBUG !!!!
      else {
         // Ciclo sulle mappe
         for ( int j = 0 ; j < m_nMapNum ; ++j) {
            bOk = SelectGeneralMotion(j, ptLs[j], ptLe[j], vtLs[j], vtLe[j], n5AxisType) && bOk ;
         }
      }
   }

   return bOk ;
}

//----------------------------------------------------------------------------
bool
VolZmap::MillingTranslationStep( const Point3d& ptPs, const Point3d& ptPe, const Vector3d& vtD, const Vector3d& vtA)
{
  // Assegno i dati per le diverse mappe di spilloni presenti
   Point3d ptLs[N_MAPS] ;
   Point3d ptLe[N_MAPS] ;
   Vector3d vtLs[N_MAPS] ;
   Vector3d vtALs[N_MAPS] ;
   InitializePointsAndVectors( ptPs, ptPe, vtD, vtA, ptLs, ptLe, vtLs, vtALs) ;

  // Standarda è multithread
   constexpr bool MULTITHREAD = true ;
   if ( MULTITHREAD) {
     // Ciclo sulle mappe
      vector< future<bool>> vRes( m_nMapNum) ;
      for ( int i = 0 ; i < m_nMapNum ; ++ i) {
         vRes[i] = async( launch::async, &VolZmap::SelectMotion, this, i, cref( ptLs[i]), cref( ptLe[i]),
                                                                          cref( vtLs[i]), cref( vtALs[i])) ;
      }
      bool bOk = true ;
      int nTerminated = 0 ;
      while ( nTerminated < m_nMapNum) {
         for ( int i = 0 ; i < m_nMapNum ; ++ i) {
            if ( vRes[i].valid()  &&  vRes[i].wait_for( chrono::nanoseconds{ 1}) == future_status::ready) {
               bOk = vRes[i].get() && bOk ;
               ++ nTerminated ;
            }
         }
      }
      return bOk ;
   }

  // !!!! NON MULTITHREAD : SOLO PER DEBUG !!!!
   else {
     // Ciclo sulle mappe
      bool bOk = true ;
      for ( int i = 0 ; i < m_nMapNum ; ++ i) {
         bOk = SelectMotion( i, ptLs[i], ptLe[i], vtLs[i], vtALs[i]) && bOk ; 
      }
      return bOk ;
   }
}

//----------------------------------------------------------------------------
bool
VolZmap::InitializePointsAndVectors( const Point3d& ptPs, const Point3d& ptPe, const Vector3d& vtDs, const Vector3d& vtAs,
                                     Point3d ptLs[3], Point3d ptLe[3], Vector3d vtLs[3], Vector3d vtALs[3])
{
  // Punti posizione
   ptLs[0] = ptPs ;
   ptLe[0] = ptPe ;
   if ( m_nMapNum > 1) {
      ptLs[1].x = ptLs[0].y ;  ptLs[1].y = ptLs[0].z ;  ptLs[1].z = ptLs[0].x ;
      ptLs[2].x = ptLs[0].z ;  ptLs[2].y = ptLs[0].x ;  ptLs[2].z = ptLs[0].y ;
      ptLe[1].x = ptLe[0].y ;  ptLe[1].y = ptLe[0].z ;  ptLe[1].z = ptLe[0].x ;
      ptLe[2].x = ptLe[0].z ;  ptLe[2].y = ptLe[0].x ;  ptLe[2].z = ptLe[0].y ;
   }

  // Vettori asse utensile
   vtLs[0] = vtDs ;
   if ( m_nMapNum > 1) {
      vtLs[1].x = vtLs[0].y ;  vtLs[1].y = vtLs[0].z ;  vtLs[1].z = vtLs[0].x ;
      vtLs[2].x = vtLs[0].z ;  vtLs[2].y = vtLs[0].x ;  vtLs[2].z = vtLs[0].y ;
   }

  // Vettori ausiliari 
   vtALs[0] = vtAs ;
   if ( m_nMapNum > 1) {
      vtALs[1].x = vtALs[0].y ;  vtALs[1].y = vtALs[0].z ;  vtALs[1].z = vtALs[0].x ;
      vtALs[2].x = vtALs[0].z ;  vtALs[2].y = vtALs[0].x ;  vtALs[2].z = vtALs[0].y ;
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::SelectMotion( int nGrid, const Point3d& ptLs, const Point3d& ptLe, const Vector3d& vtL, const Vector3d& vtAL)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Versore utensile parallelo all'asse Z (coincide con spillone)
   if ( vtL.SqLenXY() < EPS_ZERO * EPS_ZERO) {

      Vector3d vtMove = ptLe - ptLs ;

     // Foratura
      if ( vtMove.SqLenXY() < EPS_SMALL * EPS_SMALL) {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_ZDrilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_ZDrilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
            return Conus_ZDrilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_ZDrilling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::CHISEL :
            return Chs_ZDrilling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         }
      }

     // Fresatura con vettore movimento perpendicolare all'utensile
      else if ( abs( vtMove.z) < EPS_SMALL) {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_ZMilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_ZPerp( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
            return Conus_ZPerp( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::CHISEL :
            return Chs_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::ADDITIVE :
            return AddingMotion( nGrid, ptLs, ptLe, vtL) ;
         }
      }

     // Fresatura con vettore movimento generico rispetto all'utensile
      else {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_ZMilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_ZMilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
            return Conus_ZMilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::ADDITIVE :
            return AddingMotion( nGrid, ptLs, ptLe, vtL) ;
         }
      }
   }

  // Versore utensile nel piano XY (perpendicolare allo spillone)
   else if ( abs( vtL.z) < EPS_ZERO) {

      Vector3d vtMove = ptLe - ptLs ;
      Vector3d vtMLong = ( vtMove * vtL) * vtL ;
      Vector3d vtMOrt = vtMove - vtMLong ;

      double dSqLLong = vtMLong.SqLen() ;
      double dSqLOrt = vtMOrt.SqLen() ;

     // Foratura
      if ( dSqLOrt < EPS_SMALL * EPS_SMALL) {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_Drilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_XYDrilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
            return Conus_XYDrilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_Drilling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::CHISEL :
            return Chs_Drilling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         }
      }
     // Fresatura con vettore movimento perpendicolare all'utensile
      else if ( dSqLLong < EPS_SMALL * EPS_SMALL) {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_Milling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_XYPerp( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
           // Usiamo la generica per via dell'intsabilità di Conus_XYPerp
           //return  Conus_XYPerp( i, ptLs[i], ptLe[i], vtLs[i]) ;
            return Conus_Milling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::CHISEL :
            return Chs_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::ADDITIVE :
            return AddingMotion( nGrid, ptLs, ptLe, vtL) ;
         }
      }
     // Fresatura con vettore movimento generico rispetto all'utensile
      else {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_Milling( nGrid, ptLs, ptLe, vtL);
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_XYMilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
            return Conus_XYMilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::ADDITIVE :
            return AddingMotion( nGrid, ptLs, ptLe, vtL) ;
         }
      }
   }

  // Versore utensile con direzione generica
   else {
      Vector3d vtMove = ptLe - ptLs ;
      Vector3d vtMLong = ( vtMove * vtL) * vtL ;
      Vector3d vtMOrt = vtMove - vtMLong ;

      double dSqLLong = vtMLong.SqLen() ;
      double dSqLOrt = vtMOrt.SqLen() ;

      // Foratura
      if ( dSqLOrt < EPS_SMALL * EPS_SMALL) {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_Drilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_Drilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
            return Conus_Drilling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_Drilling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::CHISEL :
            return Chs_Drilling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         }
      }
     // Fresatura con vettore movimento generico rispetto all'utensile
      else {
         switch ( CurrTool.GetType()) {
         case Tool::GEN :
            return GenTool_Milling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CYLMILL :
         case Tool::BALLMILL :
            return CylBall_Milling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::CONEMILL :
            return Conus_Milling( nGrid, ptLs, ptLe, vtL) ;
         case Tool::MORTISER :
            return Mrt_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
         case Tool::CHISEL :
           // ammesso solo movimento perpendicolare all'asse utensile
            if ( dSqLLong < EPS_SMALL * EPS_SMALL)
               return Chs_Milling( nGrid, ptLs, ptLe, vtL, vtAL) ;
            break ;
         case Tool::ADDITIVE :
            return AddingMotion( nGrid, ptLs, ptLe, vtL) ;
         }
      }
   }
   return false ;
}


// ---------- VERSORE UTENSILE DIRETTO COME Z --------------------------------

// ---------- Cilindro e sfera -----------------------------------------------
//----------------------------------------------------------------------------     
bool
VolZmap::CylBall_ZDrilling( int nGrid, const Point3d & ptS, const Point3d & ptE, const Vector3d & vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Proiezione dei punti sul piano
   Point3d ptSxy( ptS.x, ptS.y, 0) ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dSqRad = CurrTool.GetRadius() * CurrTool.GetRadius() ;

  // Punte del gambo
   Point3d ptTStemS = ptS - vtToolDir * dStemHeigth ;
   Point3d ptTStemE = ptE - vtToolDir * dStemHeigth ;

  // Quote estreme del gambo
   double dMinStemZ = min( min( ptS.z, ptTStemS.z), min( ptE.z, ptTStemE.z)) ;
   double dMaxStemZ = max( max( ptS.z, ptTStemS.z), max( ptE.z, ptTStemE.z)) ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         double dX = ( i + 0.5) * m_dStep ;  double dY = ( j + 0.5) * m_dStep ;
         Point3d ptC( dX, dY, 0) ;  Vector3d vtC = ptC - ptSxy ;
         double dSqLen = vtC.SqLen() ;

        // Se il punto si trova dentro il cerchio taglio
         if ( dSqLen < dSqRad - 2 * CurrTool.GetRadius() * EPS_SMALL) {
           // utensile cilindrico
            if ( CurrTool.GetType() == Tool::CYLMILL)
               SubtractIntervals( nGrid, i, j, dMinStemZ, dMaxStemZ, Z_AX, -Z_AX, CurrTool.GetToolNum()) ;
           // utensile sferico
            else if ( CurrTool.GetType() == Tool::BALLMILL) {
               double dH = sqrt( dSqRad - dSqLen) ;
               if ( vtToolDir.z > 0) {
                   Vector3d vtNorm = Point3d( ptSxy.x, ptSxy.y, dMinStemZ) - Point3d( dX, dY, dMinStemZ - dH) ;
                   vtNorm.Normalize() ;
                   SubtractIntervals( nGrid, i, j, dMinStemZ - dH, dMaxStemZ, vtNorm, -vtToolDir, CurrTool.GetToolNum()) ;
               }
               else {
                   Vector3d vtNorm = Point3d( ptSxy.x, ptSxy.y, dMinStemZ) - Point3d( dX, dY, dMinStemZ + dH) ;
                   vtNorm.Normalize() ;
                   SubtractIntervals( nGrid, i, j, dMinStemZ, dMaxStemZ + dH, -vtToolDir, vtNorm, CurrTool.GetToolNum()) ;
               }
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CylBall_ZPerp( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dSafeRad = CurrTool.GetRadius() - EPS_SMALL ;
   double dSafeSqRad = dSafeRad * dSafeRad ;

  // Punte del gambo
   Point3d ptTStemS = ptS - vtToolDir * dStemHeigth ;
   Point3d ptTStemE = ptE - vtToolDir * dStemHeigth ;

  // Quote estreme del gambo
   double dMinStemZ = min( ptS.z, ptTStemS.z) ;
   double dMaxStemZ = max( ptS.z, ptTStemS.z) ;

  // Vettore movimento e sua lunghezza
   Vector3d vtMove = ptE - ptS ;
   double dLen = vtMove.LenXY() ;

  // Definizione di un sistema di riferimento ad hoc
   Point3d ptSxy( ptS.x, ptS.y, 0) ;
   Vector3d vtV1 = vtMove ;
   vtV1.Normalize() ;   // se |vtMove| < EPS è un buco con dz = 0
   Vector3d vtV2 = vtV1 ;
   vtV2.Rotate( Z_AX, 0, 1) ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         double dX = ( i + 0.5) * m_dStep ;  double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;           Vector3d vtC = ptC - ptSxy ;

         double dP1 = vtC * vtV1 ;           double dP2 = vtC * vtV2 ;

        // Utensile cilindrico
         if ( CurrTool.GetType() == Tool::CYLMILL) { 
           // Se il punto cade nella zona di interesse taglio 
            if ( ( dP1 * dP1 + dP2 * dP2 < dSafeSqRad) || 
                 ( ( dP1 - dLen) * ( dP1 - dLen) + dP2 * dP2) < dSafeSqRad ||
                 ( dP1 > 0 && dP1 < dLen && abs( dP2) < dSafeRad))
               
                 SubtractIntervals( nGrid, i, j, dMinStemZ, dMaxStemZ, Z_AX, -Z_AX, CurrTool.GetToolNum()) ;
         }

        // Utensile sferico
         else if ( CurrTool.GetType() == Tool::BALLMILL) {

            if ( abs( dP2) < dSafeRad) {

               if ( dP1 < 0) {
                 
                  if ( dP1 * dP1 + dP2 * dP2 < dSafeSqRad) {

                     double dH = sqrt( dSafeSqRad - dP1 * dP1 - dP2 * dP2) ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, ptTStemS.z - dH) ;
                        Vector3d vtN = ptTStemS - ptInt ;
                        vtN.Normalize() ;
                        SubtractIntervals( nGrid, i, j, ptTStemS.z - dH, ptS.z, vtN, -Z_AX, CurrTool.GetToolNum()) ;
                     }

                     else {
                        Point3d ptInt( dX, dY, ptTStemS.z + dH) ;
                        Vector3d vtN = ptTStemS - ptInt ;
                        vtN.Normalize() ;
                        SubtractIntervals( nGrid, i, j, ptS.z, ptTStemS.z + dH, Z_AX, vtN, CurrTool.GetToolNum()) ;
                     }
                  }
               }

               else if ( dP1 < dLen) {

                  double dH = sqrt( dSafeSqRad - dP2 * dP2) ;
                         
                  if ( vtToolDir.z > 0) {
                     Point3d ptInt( dX, dY, ptTStemS.z - dH) ;
                     Vector3d vtN = - ( ptInt - ptTStemS) + ( ptInt - ptTStemS) * vtV1 * vtV1 ;
                     vtN.Normalize() ;
                     SubtractIntervals( nGrid, i, j, ptTStemS.z - dH, ptS.z, vtN, -Z_AX, CurrTool.GetToolNum()) ;
                  }

                  else {
                     Point3d ptInt( dX, dY, ptTStemS.z + dH) ;
                     Vector3d vtN = - ( ptInt - ptTStemS) + ( ptInt - ptTStemS) * vtV1 * vtV1 ;
                     vtN.Normalize() ;
                     SubtractIntervals( nGrid, i, j, ptS.z, ptTStemS.z + dH, Z_AX, vtN, CurrTool.GetToolNum()) ;
                  }
               }

               else {
                  if ( ( dP1 - dLen) * ( dP1 - dLen) + dP2 * dP2 < dSafeSqRad) {
                  
                     double dH = sqrt( dSafeSqRad - ( dP1 - dLen) * ( dP1 - dLen) - dP2 * dP2) ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, ptTStemE.z - dH) ;
                        Vector3d vtN = ptTStemE - ptInt ;
                        vtN.Normalize() ;
                        SubtractIntervals( nGrid, i, j, ptTStemE.z - dH, ptS.z, vtN, -Z_AX, CurrTool.GetToolNum()) ;
                     }

                     else  {
                        Point3d ptInt( dX, dY, ptTStemE.z + dH) ;
                        Vector3d vtN = ptTStemE - ptInt ;
                        vtN.Normalize() ;
                        SubtractIntervals( nGrid, i, j, ptS.z, ptTStemE.z + dH, Z_AX, vtN, CurrTool.GetToolNum()) ;
                     }
                  }
               }
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------     
bool
VolZmap::CylBall_ZMilling( int nGrid, const Point3d & ptS, const Point3d & ptE, const Vector3d & vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dSafeRadius = CurrTool.GetRadius() - EPS_SMALL ;
   double dSqRad = CurrTool.GetRadius() * CurrTool.GetRadius() ;
   double dSafeSqRad = dSqRad - 2 * CurrTool.GetRadius() * EPS_SMALL ;

  // Studio delle simmetrie
   Point3d ptI = ( ptS.z < ptE.z ? ptS : ptE) ;
   Point3d ptF = ( ptS.z < ptE.z ? ptE : ptS) ;
   Point3d ptIT = ptI - vtToolDir * dStemHeigth ;
   Point3d ptFT = ptF - vtToolDir * dStemHeigth ;
   Point3d ptIxy( ptI.x, ptI.y, 0) ;

   Point3d ptIUp( ptI.x, ptI.y, max( ptI.z, ptIT.z)) ;
   Point3d ptIDw( ptI.x, ptI.y, min( ptI.z, ptIT.z)) ;
  
  // Quote iniziali e finali massime e
  // minime del gambo dell'utensile e DeltaZ
   double dZMaxI = max( ptI.z, ptIT.z) ;
   double dZMaxF = max( ptF.z, ptFT.z) ;
   double dZMinI = dZMaxI - dStemHeigth ;
   double dDeltaZ = dZMaxF - dZMaxI ;

  // Vettori caratterizzanti il moto 
   Vector3d vtMove = ptF - ptI ;
   Vector3d vtMoveXY( vtMove.x, vtMove.y, 0) ;
   double dLenXY = vtMoveXY.LenXY() ;
   vtMove.Normalize() ;

  // Definizione di un sistema di riferimento ad hoc
   Vector3d vtV1, vtV2 ;

  // Se la lunghezza è troppo piccola lo allungo
   if ( dLenXY < EPS_SMALL) 
      vtV1 = ( 1 / dLenXY) * vtMoveXY ;
   else
      vtV1 = vtMoveXY ;

  // Normalizzo vtV1
   vtV1.Normalize() ;
  // Definisco vtV2
   vtV2 = vtV1 ;
   vtV2.Rotate( Z_AX, 0, 1) ;

   double dMin, dMax ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;
         Vector3d vtC = ptC - ptIxy ;

         double dX1 = vtC * vtV1 ;
         double dX2 = vtC * vtV2 ;

        // Se il punto appartiene alla proiezione del volume spazzato valuto massimo e minimo
         if ( ( dX1 > 0 && dX1 < dLenXY && abs( dX2) < dSafeRadius)    ||
              ( dX1 - dLenXY) * ( dX1 - dLenXY) + dX2 * dX2 < dSafeSqRad || 
                dX1 * dX1 + dX2 * dX2 < dSafeSqRad) {

            double dX1_0 = sqrt( dSqRad - dX2 * dX2) ; 
            Vector3d vtNmin, vtNmax ;

           // Massimo
            if ( ( dX1 - dLenXY) * ( dX1 - dLenXY) + dX2 * dX2 < dSqRad) {
               vtNmax = - Z_AX ;
               dMax = dZMaxF ;
            }

            else { 
               //vtNmax = - ( dX2 / dX1_0) * vtMove ^ vtV1 - vtMove ^ vtV2 ; 
               dMax = dZMaxI + dDeltaZ * ( dX1 + dX1_0) / dLenXY ;

               Vector3d vtCirc = dX1_0 * vtV1 - dX2 * vtV2 ; // Punta verso il centro
               Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;    // Tangente alla circonferenza
               Vector3d vtCross = vtTan ^ vtMove ; 
               
               vtNmax = ( vtCross * vtCirc > - EPS_ZERO ? vtCross : - vtCross) ;
               vtNmax.Normalize() ;
            }
           // Minimo
            if ( dX1 * dX1 + dX2 * dX2 < dSqRad) {
               vtNmin = Z_AX ;
               dMin = dZMinI ;
            }

            else {
               //vtNmin = - ( dX2 / dX1_0) * vtMove ^ vtV1 + vtMove ^ vtV2 ;
               dMin = dZMinI + dDeltaZ * ( dX1 - dX1_0) / dLenXY ;

               Vector3d vtCirc = - dX1_0 * vtV1 - dX2 * vtV2 ; // Punta verso il centro
               Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;    // Tangente alla circonferenza
               Vector3d vtCross = vtTan ^ vtMove ; 

               vtNmin = ( vtCross * vtCirc > - EPS_ZERO ? vtCross : - vtCross) ;
               vtNmin.Normalize() ;
            }

            SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
         }
      }
   }

   if ( CurrTool.GetType() == Tool::BALLMILL)

      CompBall_Milling( nGrid, ptIT, ptFT, CurrTool.GetRadius(), CurrTool.GetToolNum()) ;

   return true ;
}


// ---------- Coni -----------------------------------------------------------
//----------------------------------------------------------------------------
bool
VolZmap::Conus_ZDrilling( int nGrid, const Point3d & ptS, const Point3d & ptE, const Vector3d & vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dMinRad = min( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dMaxRad = max( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dDeltaRad = dMaxRad - dMinRad ;
   double dSqMinRad = dMinRad * dMinRad ;
   double dSqMaxRad = dMaxRad * dMaxRad ;

  // Proiezione delle posizioni sul piano
   Point3d ptO( ptS.x, ptS.y, 0) ;

  // Quote massime e minime dell'utensile durante il moto
   double dZMax = max( max( ptS.z, ptS.z - vtToolDir.z * CurrTool.GetHeigth()),
                       max( ptE.z, ptE.z - vtToolDir.z * CurrTool.GetHeigth())) ;
   double dZMin = min( min( ptS.z, ptS.z - vtToolDir.z * CurrTool.GetHeigth()), 
                       min( ptE.z, ptE.z - vtToolDir.z * CurrTool.GetHeigth())) ;

  // Parametri geometrici per 
  // determinare il vettore normale
   double dL = CurrTool.GetTipHeigth() * dMaxRad / dDeltaRad ;

  // Trapano
   if ( CurrTool.GetTipRadius() < CurrTool.GetRadius()) {

     // Ciclo sui punti
      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            double dX = ( i + 0.5) * m_dStep ;
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;
            Vector3d vtC = ptC - ptO ;

            double dSqDist = vtC.SqLenXY() ;

            if ( dSqDist < dSqMinRad)

               SubtractIntervals( nGrid, i, j, dZMin, dZMax, Z_AX, -Z_AX, CurrTool.GetToolNum()) ;

            else if ( dSqDist < dSqMaxRad) {

               double dr = sqrt( dSqDist) ;
               double dl = dr * dMaxRad / dL ;

               if ( vtToolDir.z > 0) {

                  double dMin = dZMin + CurrTool.GetTipHeigth() * ( dr - dMinRad) / dDeltaRad ;
                  double dMax = dZMax ;
                  
                  Point3d ptInt( dX, dY, dMin) ;
                  Point3d ptPn( ptO.x, ptO.y, dMin + dl) ;

                  Vector3d vtNmin = ptPn - ptInt ;
                  vtNmin.Normalize() ;

                  SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, -Z_AX, CurrTool.GetToolNum()) ;
               }

               else {
                  double dMin = dZMin ;
                  double dMax = dZMax -  CurrTool.GetTipHeigth() * ( dr - dMinRad) / dDeltaRad ;

                  Point3d ptInt( dX, dY, dMax) ;
                  Point3d ptPn( ptO.x, ptO.y, dMax - dl) ;

                  Vector3d vtNmax = ptPn - ptInt ;
                  vtNmax.Normalize() ;

                  SubtractIntervals( nGrid, i, j, dMin, dMax, Z_AX, vtNmax, CurrTool.GetToolNum()) ;
               }
            }
         }
      }
   }

  // Coda di rondine
   else {

     // Ciclo sui punti
      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            double dX = ( i + 0.5) * m_dStep ;
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;
            Vector3d vtC = ptC - ptO ;

            double dSqDist = vtC.SqLenXY() ;
            
            if ( dSqDist < dSqMinRad) {
               SubtractIntervals( nGrid, i, j, dZMin, dZMax, Z_AX, -Z_AX, CurrTool.GetToolNum()) ;
            }

            else if ( dSqDist < dSqMaxRad) {

               double dr = sqrt( dSqDist) ;
               double dl = dr * dMaxRad / dL ;

               if ( vtToolDir.z > 0) {  
                  double dMin = dZMin ;
                  double dMax = dZMax - dStemHeigth - CurrTool.GetTipHeigth() * ( dr - dMinRad) / dDeltaRad ;

                  Point3d ptInt( dX, dY, dMax) ;
                  Point3d ptPn( ptO.x, ptO.y, dMax - dl) ;

                  Vector3d vtNmax = ptPn - ptInt ;
                  vtNmax.Normalize() ;
                 
                  SubtractIntervals( nGrid, i, j, dMin, dMax, Z_AX, vtNmax, CurrTool.GetToolNum()) ;  
               }

               else {
                  double dMin = dZMin + dStemHeigth + CurrTool.GetTipHeigth() * ( dr - dMinRad) / dDeltaRad ;
                  double dMax = dZMax ;

                  Point3d ptInt( dX, dY, dMin) ;
                  Point3d ptPn( ptO.x, ptO.y, dMin + dl) ;

                  Vector3d vtNmin = ptPn - ptInt ;
                  vtNmin.Normalize() ;

                  SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, -Z_AX, CurrTool.GetToolNum()) ;  
               }
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Conus_ZPerp( int nGrid, const Point3d & ptS, const Point3d & ptE, const Vector3d & vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dMinRad = min( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dMaxRad = max( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dDeltaRad = dMaxRad - dMinRad ;
   double dSqMinRad = dMinRad * dMinRad ;
   double dSqMaxRad = dMaxRad * dMaxRad ;

   double dSafeMinRad = dMinRad - EPS_SMALL ;
   double dSafeMaxRad = dMaxRad - EPS_SMALL ;
   double dSafeSqMaxRad = dSafeMaxRad * dSafeMaxRad ;
   double dSafeSqMinRad = dSafeMinRad * dSafeMinRad ;
   
   Point3d ptSxy( ptS.x, ptS.y, 0) ;
   Point3d ptExy( ptE.x, ptE.y, 0) ;

   Vector3d vtV1( ptE.x - ptS.x, ptE.y - ptS.y, 0) ;
   Vector3d vtV2( - vtV1.y, vtV1.x, 0) ;

   double dLen = vtV1.LenXY() ;

   vtV1.Normalize() ;
   vtV2.Normalize() ;

   double dBaseZ = ptS.z ;
   double dStemZ = ptS.z - vtToolDir.z * dStemHeigth ;
   double dTipZ = ptS.z -  vtToolDir.z * CurrTool.GetHeigth() ;

  // Lunghezza cono
   double dL = CurrTool.GetTipHeigth() * dMaxRad / dDeltaRad ;

  // Punta a trapano
   if ( CurrTool.GetTipRadius() < CurrTool.GetRadius()) {

      Vector3d vtV = vtToolDir ;

      Point3d ptVS = ptS - vtToolDir * ( dStemHeigth + dL) ;
      Point3d ptVE = ptE - vtToolDir * ( dStemHeigth + dL) ;

      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
         
            double dX = ( i + 0.5) * m_dStep ; 
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;

            Vector3d vtCS = ptC - ptSxy ;
            Vector3d vtCE = ptC - ptExy ;

            double dP1 = vtCS * vtV1 ;
            double dP2 = vtCS * vtV2 ;

            double dSqLenS = vtCS.SqLenXY() ;
            double dSqLenE = vtCE.SqLenXY() ;

            if ( dSqLenS < dSafeSqMaxRad  ||  dSqLenE < dSafeSqMaxRad  ||
                 ( abs( dP2) < dSafeMaxRad  &&  dP1 >= 0  &&  dP1 <= dLen)) {

               if ( dSqLenS < dSqMinRad  ||  dSqLenE < dSqMinRad  || 
                    ( abs( dP2) < dMinRad  &&  dP1 >= 0  &&  dP1 <= dLen)) {

                  double dMin = min( dBaseZ, dTipZ) ;
                  double dMax = max( dBaseZ, dTipZ) ;

                  SubtractIntervals( nGrid, i, j, dMin, dMax, Z_AX, -Z_AX, CurrTool.GetToolNum()) ;
               }

               else {
                  Vector3d vtNmin, vtNmax ;

                  if ( dP1 < 0) {

                     double dr = sqrt( dSqLenS) ;

                     double dMin = min( dBaseZ, dTipZ + ( dStemZ - dTipZ) * ( dr - dMinRad) / dDeltaRad) ;
                     double dMax = max( dBaseZ, dTipZ + ( dStemZ - dTipZ) * ( dr - dMinRad) / dDeltaRad) ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, dMin) ;
                        Vector3d vtU = ( ptInt - ptVS) - ( ptInt - ptVS) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmin.Normalize() ;
                        vtNmax = - Z_AX ;
                     }

                     else {
                        Point3d ptInt( dX, dY, dMax) ;
                        Vector3d vtU = ( ptInt - ptVS) - ( ptInt - ptVS) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmin = Z_AX ;
                        vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmax.Normalize() ;
                     }
                     SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
                  }

                  else if ( dP1 <= dLen) {
                     double dr = abs( dP2) ;
                     double dMin = min( dBaseZ, dTipZ + ( dStemZ - dTipZ) * ( dr - dMinRad) / dDeltaRad) ;
                     double dMax = max( dBaseZ, dTipZ + ( dStemZ - dTipZ) * ( dr - dMinRad) / dDeltaRad) ;
                     Point3d ptVtemp = ptVS + vtV1 * dP1 ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, dMin) ;
                        Vector3d vtU = ( ptInt - ptVtemp) - ( ptInt - ptVtemp) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmin.Normalize() ;
                        vtNmax = - Z_AX ;
                     }

                     else {
                        Point3d ptInt( dX, dY, dMax) ;
                        Vector3d vtU = ( ptInt - ptVtemp) - ( ptInt - ptVtemp) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmin = Z_AX ;
                        vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmax.Normalize() ;
                     }

                     SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
                  }

                  else {

                     double dr = sqrt( dSqLenE) ;

                     double dMin = min( dBaseZ, dTipZ + ( dStemZ - dTipZ) * ( dr - dMinRad) / dDeltaRad) ;
                     double dMax = max( dBaseZ, dTipZ + ( dStemZ - dTipZ) * ( dr - dMinRad) / dDeltaRad) ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, dMin) ;
                        Vector3d vtU = ( ptInt - ptVE) - ( ptInt - ptVE) * vtV * vtV ; 
                        vtU.Normalize() ;
                        vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmin.Normalize() ;
                        vtNmax = -Z_AX ;
                     }

                     else {
                        Point3d ptInt( dX, dY, dMax) ;
                        Vector3d vtU = ( ptInt - ptVE) - ( ptInt - ptVE) * vtV * vtV ; 
                        vtU.Normalize() ;
                        vtNmin =  Z_AX ;
                        vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmax.Normalize() ;
                     }

                     SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
                  }
               }
            }
         }
      }
   }

  // Coda di rondine
   else {

      Vector3d vtV = - vtToolDir ;

      Point3d ptVS = ptS - vtToolDir * ( CurrTool.GetHeigth() - dL) ;
      Point3d ptVE = ptE - vtToolDir * ( CurrTool.GetHeigth() - dL) ;

      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            double dX = ( i + 0.5) * m_dStep ; 
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;

            Vector3d vtCS = ptC - ptSxy ;
            Vector3d vtCE = ptC - ptExy ;

            double dP1 = vtCS * vtV1 ;
            double dP2 = vtCS * vtV2 ;

            double dSqLenS = vtCS.SqLenXY() ;
            double dSqLenE = vtCE.SqLenXY() ;

            if ( dSqLenS < dSqMaxRad  ||  dSqLenE < dSqMaxRad  || 
                 ( abs( dP2) < dMaxRad  &&  dP1 >= 0  &&  dP1 <= dLen)) {

               if ( dSqLenS < dSafeSqMinRad  ||  dSqLenE < dSafeSqMinRad  || 
                    ( abs( dP2) < dSafeMinRad  &&  dP1 >= 0  &&  dP1 <= dLen)) {
                  double dMin = min( dBaseZ, dTipZ) ;
                  double dMax = max( dBaseZ, dTipZ) ;
                  SubtractIntervals( nGrid, i, j, dMin, dMax, Z_AX, -Z_AX, CurrTool.GetToolNum()) ;
               }

               else {
                   Vector3d vtNmin, vtNmax ;

                  if ( dP1 < 0) {
                     double dr = sqrt( dSqLenS) ;
                     double dMin = min( dTipZ, dStemZ + ( dTipZ - dStemZ) * ( dr - dMinRad) / dDeltaRad) ;
                     double dMax = max( dTipZ, dStemZ + ( dTipZ - dStemZ) * ( dr - dMinRad) / dDeltaRad) ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, dMax) ;
                        Vector3d vtU = ( ptInt - ptVS) - ( ptInt - ptVS) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmin = Z_AX ;
                        vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmax.Normalize() ;
                     }

                     else {
                        Point3d ptInt( dX, dY, dMin) ;
                        Vector3d vtU = ( ptInt - ptVS) - ( ptInt - ptVS) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmax = -Z_AX ;
                        vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmin.Normalize() ;
                     }
                     SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
                  }

                  else if ( dP1 <= dLen) {
                      double dr = abs( dP2) ;
                      Point3d ptVtemp = ptVS + vtV1 * dP1 ;
                      double dMin = min( dTipZ, dStemZ + ( dTipZ - dStemZ) * ( dr - dMinRad) / dDeltaRad) ;
                      double dMax = max( dTipZ, dStemZ + ( dTipZ - dStemZ) * ( dr - dMinRad) / dDeltaRad) ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, dMax) ;
                        Vector3d vtU = ( ptInt - ptVtemp) - ( ptInt - ptVtemp) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmin = Z_AX ;
                        vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmax.Normalize() ;
                     }

                     else {
                        Point3d ptInt( dX, dY, dMin) ;
                        Vector3d vtU = ( ptInt - ptVtemp) - ( ptInt - ptVtemp) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmax = -Z_AX ;
                        vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmin.Normalize() ;
                     }

                     SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
                  }

                  else {
                     double dr = sqrt( dSqLenE) ;
                     double dMin = min( dTipZ, dStemZ + ( dTipZ - dStemZ) * ( dr - dMinRad) / dDeltaRad) ;
                     double dMax = max( dTipZ, dStemZ + ( dTipZ - dStemZ) * ( dr - dMinRad) / dDeltaRad) ;

                     if ( vtToolDir.z > 0) {
                        Point3d ptInt( dX, dY, dMax) ;
                        Vector3d vtU = ( ptInt - ptVE) - ( ptInt - ptVE) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmin = Z_AX ;
                        vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmax.Normalize() ;
                     }

                     else {
                        Point3d ptInt( dX, dY, dMin) ;
                        Vector3d vtU = ( ptInt - ptVE) - ( ptInt - ptVE) * vtV * vtV ;
                        vtU.Normalize() ;
                        vtNmax = -Z_AX ;
                        vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                        vtNmin.Normalize() ;
                     }

                     SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
                  }
               }
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool 
VolZmap::Conus_ZMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   double dStemH = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;

   CompCyl_ZMilling( nGrid, ptS, ptE, vtToolDir, dStemH, CurrTool.GetRadius(), CurrTool.GetToolNum()) ;

   if ( CurrTool.GetTipRadius() < CurrTool.GetRadius()) {
      Point3d ptSC = ptS - vtToolDir * dStemH ;
      Point3d ptEC = ptE - vtToolDir * dStemH ;
      CompConus_ZMilling( nGrid, ptSC, ptEC, vtToolDir,
                          CurrTool.GetTipHeigth(), CurrTool.GetRadius(), CurrTool.GetTipRadius(), V_NULL, V_NULL, CurrTool.GetToolNum()) ;
   }

   else {
      Point3d ptSC = ptS - vtToolDir * CurrTool.GetHeigth() ;
      Point3d ptEC = ptE - vtToolDir * CurrTool.GetHeigth() ;
      CompConus_ZMilling( nGrid, ptSC, ptEC, - vtToolDir,
                          CurrTool.GetTipHeigth(), CurrTool.GetTipRadius(), CurrTool.GetRadius(), V_NULL, V_NULL, CurrTool.GetToolNum()) ;
   }

   return true ;
}

// --------- Mortasatrice -----------------------------------------------------

// ----------------------------------------------------------------------------
bool 
VolZmap::Mrt_ZDrilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, const Vector3d& vtAux)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Proiezione della traiettoria sul piano dei movimenti possibili
   Vector3d vtMoveOnP = ( ptE - ptS) * vtToolDir * vtToolDir ;
   Point3d ptEOnP = ptS + vtMoveOnP ;

  // Scompongo la mortasatrice in solidi semplici

  // Parallelepipedo di base
   double dLenX = CurrTool.GetMrtChsWidth() ;
   double dLenY =  CurrTool.GetMrtChsThickness() ;
   double dLenZ = CurrTool.GetHeigth() - CurrTool.GetCornRadius() ;

   CompPar_ZDrilling( nGrid, dLenX, dLenY, dLenZ, ptS, ptEOnP, vtToolDir, vtAux, CurrTool.GetToolNum()) ;
   
  // Se la punta è di tipo bull-nose
   if ( abs( CurrTool.GetMrtChsWidth() - 2 * CurrTool.GetCornRadius()) > EPS_SMALL) {

     // Parallelepipedo di punta 
      Point3d ptTipS = ptS - dLenZ * vtToolDir ;
      Point3d ptTipE = ptEOnP - dLenZ * vtToolDir ;

      dLenX = abs( CurrTool.GetMrtChsWidth() - 2 * CurrTool.GetCornRadius()) ;
      dLenZ = CurrTool.GetCornRadius() ;

      CompPar_ZDrilling( nGrid, dLenX, dLenY, dLenZ, ptTipS, ptTipE, vtToolDir, vtAux, CurrTool.GetToolNum()) ;

      Vector3d vtVOnP = vtToolDir ^ vtAux ;

     // Cilindri 
      Point3d ptSminus = ptTipS - ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;
      Point3d ptEminus = ptTipE - ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;  
      Point3d ptSplus = ptTipS + ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;
      Point3d ptEplus = ptTipE + ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;  

      CompCyl_Milling( nGrid, ptSminus, ptEminus, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
      CompCyl_Milling( nGrid, ptSplus, ptEplus, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
   }

  // se la punta è di tipo sfera
   else {
     // Cilindro
      Point3d ptCylS = ptS - dLenZ * vtToolDir + 0.5 * dLenY * vtAux ;
      Point3d ptCylE = ptEOnP - dLenZ * vtToolDir + 0.5 * dLenY * vtAux ;

      CompCyl_Milling( nGrid, ptCylS, ptCylE, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
   }

   return true ;
}


// --------- Chisel ----------------------------------------------------------

//----------------------------------------------------------------------------
bool 
VolZmap::Chs_ZDrilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, const Vector3d& vtAux) 
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   CompPar_ZDrilling( nGrid, CurrTool.GetMrtChsWidth(), CurrTool.GetMrtChsThickness(), CurrTool.GetHeigth(),
                      ptS, ptE, vtToolDir, vtAux, CurrTool.GetToolNum()) ;
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Chs_ZMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, const Vector3d& vtAux) 
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Proiezione della traiettoria sul piano dei moti possibili
   Point3d ptSp = ptS ;
   Vector3d vtMoveOnP = ( ptE - ptS) - ( ptE - ptS) * vtToolDir * vtToolDir ;
   Point3d ptEp = ptS + vtMoveOnP ;

   CompPar_ZMilling( nGrid, CurrTool.GetMrtChsWidth(), CurrTool.GetMrtChsThickness(), CurrTool.GetHeigth(),
                     ptSp, ptEp, vtToolDir, vtAux, CurrTool.GetToolNum()) ;
   return true ;
}

// --------- Utensile generico ------------------------------------------------ 

//----------------------------------------------------------------------------
bool
VolZmap::GenTool_ZDrilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Descrizione geometrica del moto
   Point3d ptI = ptS ;
   Point3d ptF = ptE ;
   Vector3d vtMove = ptE - ptS ;
  // Vettore delle normali agli archi
   const VCT3DVECTOR& vArcNorm = CurrTool.GetArcNormalVec() ;
  // Poinché l'asse utensile è parallelo all'asse Z, definisco un sistema di
  // riferimento ad hoc in cui le normali agli archi giacciano nel piano XZ.
   Frame3d frNormFrame ;
   frNormFrame.Set( ORIG, X_AX, - Z_AX, Y_AX) ;
  // Ciclo sulle curve
   const CurveComposite& ToolProfile = CurrTool.GetApproxOutline() ;
   int i = - 1 ;
   const ICurve* pCurve = ToolProfile.GetCurve( ++ i) ;
   while ( pCurve != nullptr) {

      double dHeight = 0 ;

     // Se segmento
      if ( pCurve->GetType() == CRV_LINE) {
        // Recupero gli estremi
         const ICurveLine* pLine = GetCurveLine( pCurve) ;
         Point3d ptStart = pLine->GetStart() ;
         Point3d ptEnd = pLine->GetEnd() ;
         int nNormNum = pLine->GetTempProp() ;
         Vector3d vtNormSt, vtNormEn ;
         if ( nNormNum != 0) {
            vtNormSt = vArcNorm[nNormNum - 1] ;
            vtNormEn = vArcNorm[nNormNum] ;
            vtNormSt.ToLoc( frNormFrame) ;
            vtNormEn.ToLoc( frNormFrame) ; 
         }
        // Ne determino l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
         if ( dHeight > EPS_SMALL) {
           // Se X costante, è un cilindro
            if ( abs( ptStart.x - ptEnd.x) < EPS_SMALL) {
               double dRadius = ptStart.x ;
               if ( dRadius > 10 * EPS_SMALL)
                  CompCyl_ZDrilling( nGrid, ptI, ptF, vtToolDir, dHeight, dRadius, CurrTool.GetToolNum()) ;
            }
           // Se X crescente, è un cono con vettore equiverso a quello dell'utensile
            else if ( ptStart.x > ptEnd.x) {
               double dMaxRad = ptStart.x ;
               double dMinRad = ptEnd.x ;
               CompConus_ZDrilling( nGrid, ptI, ptF, vtToolDir, dHeight, dMaxRad, dMinRad, vtNormSt, vtNormEn, CurrTool.GetToolNum()) ;
            }
           // Se X decrescente, è un cono con vettore opposto a quello dell'utensile
            else if ( ptStart.x < ptEnd.x) {
               double dMaxRad = ptEnd.x ; 
               double dMinRad = ptStart.x ;
               Point3d ptIn = ptI - vtToolDir * dHeight ;
               Point3d ptFn = ptIn + vtMove ;
               vtNormEn.z *= -1 ;
               vtNormSt.z *= -1 ;
               CompConus_ZDrilling( nGrid, ptIn, ptFn, - vtToolDir, dHeight, dMaxRad, dMinRad, vtNormEn, vtNormSt, CurrTool.GetToolNum()) ;
            }
         }
      }

     // se altrimenti arco
      else if ( pCurve->GetType() == CRV_ARC) {
        // Recupero estremi, centro e raggio
         const ICurveArc* pArc = GetCurveArc( pCurve) ;
         Point3d ptStart ; pArc->GetStartPoint( ptStart) ;
         Point3d ptEnd ; pArc->GetEndPoint( ptEnd) ;
         Point3d ptCen = pArc->GetCenter() ;
         double dRadius = pArc->GetRadius() ;
        // Determino le posizioni iniziale e finale del centro della sfera
         Point3d ptCenS = ptI - vtToolDir * ( ptStart.y - ptCen.y) ;
         Point3d ptCenE = ptCenS + vtMove ;
        // Eseguo l'asportazione del materiale
         CompBall_Milling( nGrid, ptCenS, ptCenE, dRadius, CurrTool.GetToolNum()) ;
        // aggiorno l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
      }

     // Determino le posizioni iniziale e finale del componente successivo
      ptI = ptI - vtToolDir * dHeight ;
      ptF = ptI + vtMove ;

     // Passo alla curva successiva del profilo
      pCurve = ToolProfile.GetCurve( ++ i) ;
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::GenTool_ZMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Descrizione geometrica del moto  
   Point3d ptI = ptS ;
   Point3d ptF = ptE ;
   Vector3d vtMove = ptE - ptS ;
  // Vettore delle normali agli archi
   const VCT3DVECTOR& vArcNorm = CurrTool.GetArcNormalVec() ;
  // Poinché l'asse utensile è parallelo all'asse Z, definisco un sistema di
  // riferimento ad hoc in cui le normali agli archi giacciano nel piano XZ.
   Frame3d frNormFrame;
   frNormFrame.Set( ORIG, X_AX, -Z_AX, Y_AX) ;
  // Ciclo sulle curve del profilo utensile
   const CurveComposite& ToolProfile = CurrTool.GetApproxOutline() ;
   int i = - 1 ;
   const ICurve* pCurve = ToolProfile.GetCurve( ++ i) ;
   while ( pCurve != nullptr) {

      double dHeight = 0 ;

     // Se segmento
      if ( pCurve->GetType() == CRV_LINE) {
        // Recupero gli estremi
         const ICurveLine* pLine = GetCurveLine( pCurve) ;
         Point3d ptStart = pLine->GetStart() ;
         Point3d ptEnd = pLine->GetEnd() ;
         int nNormNum = pLine->GetTempProp() ;
         Vector3d vtNormSt, vtNormEn ;
         if ( nNormNum != 0) {
            vtNormSt = vArcNorm[nNormNum - 1] ;
            vtNormEn = vArcNorm[nNormNum] ;
            vtNormSt.ToLoc( frNormFrame) ;
            vtNormEn.ToLoc( frNormFrame) ;
         }
        // Ne determino l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
         if ( dHeight > EPS_SMALL) {
           // Se X costante, è un cilindro
            if ( abs( ptStart.x - ptEnd.x) < EPS_SMALL) {
               double dRadius = ptStart.x ;
               if ( dRadius > 10 * EPS_SMALL)
                  CompCyl_ZMilling( nGrid, ptI, ptF, vtToolDir, dHeight, dRadius, CurrTool.GetToolNum()) ;
            }
           // Se X crescente, è un cono con vettore equiverso a quello dell'utensile
            else if ( ptStart.x > ptEnd.x) {
               double dMaxRad = ptStart.x ;
               double dMinRad = ptEnd.x ;
               CompConus_ZMilling( nGrid, ptI, ptF, vtToolDir, dHeight, dMaxRad, dMinRad, vtNormSt, vtNormEn, CurrTool.GetToolNum()) ;
            }
           // Se X decrescente, è un cono con vettore opposto a quello dell'utensile
            else if ( ptStart.x < ptEnd.x) {
               double dMaxRad = ptEnd.x ; 
               double dMinRad = ptStart.x ;
               Point3d ptIn = ptI - vtToolDir * dHeight ;
               Point3d ptFn = ptIn + vtMove ;
               vtNormEn.z *= -1 ;
               vtNormSt.z *= -1 ;
               CompConus_ZMilling( nGrid, ptIn, ptFn, - vtToolDir, dHeight, dMaxRad, dMinRad, vtNormEn, vtNormSt, CurrTool.GetToolNum()) ;
            }
         }
      }

     // se altrimenti arco
      else if ( pCurve->GetType() == CRV_ARC) { 
        // Recupero estremi, centro e raggio
         const ICurveArc* pArc = GetCurveArc( pCurve) ;
         Point3d ptStart ; pArc->GetStartPoint( ptStart) ;
         Point3d ptEnd ; pArc->GetEndPoint( ptEnd) ;
         Point3d ptCen = pArc->GetCenter() ;
         double dRadius = pArc->GetRadius() ;
        // Determino le posizioni iniziale e finale del centro della sfera
         Point3d ptCenS = ptI - vtToolDir * ( ptStart.y - ptCen.y) ;
         Point3d ptCenE = ptCenS + vtMove ;
        // Eseguo l'asportazione del materiale
         CompBall_Milling( nGrid, ptCenS, ptCenE, dRadius, CurrTool.GetToolNum()) ;
        // aggiorno l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
      } 

     // Determino le posizioni iniziale e finale del componente successivo
      ptI = ptI - vtToolDir * dHeight ;
      ptF = ptI + vtMove ;

     // Passo alla curva successiva del profilo
      pCurve = ToolProfile.GetCurve( ++ i) ;
   }

   return true ;
}

// ---------- VERSORE UTENSILE NEL PIANO XY ----------------------------------

// --------- Cilindro e sfera ------------------------------------------------ 
//----------------------------------------------------------------------------
bool
VolZmap::CylBall_XYDrilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile e quota Z del movimento
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dSqRad = CurrTool.GetRadius() * CurrTool.GetRadius() ;
   double dZ = ptS.z ;
  
  // Vettore movimento e sua lunghezza
   Vector3d vtMove = ptE - ptS ;  double dLen = vtMove.LenXY() ;

  // Definizione di un sistema di riferimento ad hoc
   Point3d ptI = ( vtMove * vtToolDir > 0 ? ptE : ptS) ;
   Point3d ptF = ( vtMove * vtToolDir > 0 ? ptS - dStemHeigth * vtToolDir : ptE - dStemHeigth * vtToolDir) ;
   Point3d ptIxy( ptI.x, ptI.y, 0) ;
   Point3d ptFxy( ptF.x, ptF.y, 0) ;

   Vector3d vtV1( - vtToolDir.x, - vtToolDir.y, 0) ;
   vtV1.Normalize() ;
   Vector3d vtV2 = vtV1 ;
   vtV2.Rotate( Z_AX, 0, 1) ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         double dX = ( i + 0.5) * m_dStep ;  double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;           Vector3d vtC = ptC - ptIxy ;

         double dP1 = vtC * vtV1 ;           double dP2 = vtC * vtV2 ;

         Vector3d vtBall = ptC - ptFxy ;     double dSqLen = vtBall.SqLenXY() ;

        // Zona lavorata dalla parte cilindrica
         if ( dP1 > EPS_SMALL && dP1 < dStemHeigth + dLen - EPS_SMALL && 
              abs( dP2) < CurrTool.GetRadius()) {

            double dH = sqrt( dSqRad - dP2 * dP2) ;
            double dMin = dZ - dH ;
            double dMax = dZ + dH ;

            Point3d ptIntMin( dX, dY, dMin) ;
            Point3d ptIntMax( dX, dY, dMax) ;

            Vector3d vtMin = ( ptI - ptIntMin) -
                             ( ptI - ptIntMin) * vtToolDir * vtToolDir ;
            Vector3d vtMax = ( ptI - ptIntMax) - 
                             ( ptI - ptIntMax) * vtToolDir * vtToolDir ;

            vtMin.Normalize() ;
            vtMax.Normalize() ;

            SubtractIntervals( nGrid, i, j, dMin, dMax, vtMin, vtMax, CurrTool.GetToolNum()) ;
         }

        // Se l'utensile è sferico sottraggo anche la punta
         if ( CurrTool.GetType() == Tool::BALLMILL)
            if ( dSqLen < dSqRad) { // LA SOLUZIONE MOMENTANEA è CREARE UTENSILE GENERICO SE LO STELO è PIù CORTO DEL RAGGIO

               double dH = sqrt( dSqRad - dSqLen) ;
               double dMin = dZ - dH ;
               double dMax = dZ + dH ;

               Vector3d vtMin = ptF - Point3d( dX, dY, dMin) ;
               Vector3d vtMax = ptF - Point3d( dX, dY, dMax) ;

               vtMin.Normalize() ;
               vtMax.Normalize() ;

               SubtractIntervals( nGrid, i, j, dZ - dH, dZ + dH, vtMin, vtMax, CurrTool.GetToolNum()) ;
            }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CylBall_XYPerp( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d & vtToolDir) 
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dSqRad = CurrTool.GetRadius() * CurrTool.GetRadius() ;
   double dSafeSqRad = dSqRad - 2 * CurrTool.GetRadius() * EPS_SMALL ;

  // Studio simmetrie del problema
   Point3d ptI = ( ptS.z <= ptE.z ? ptS : ptE) ;
   Point3d ptF = ( ptS.z <= ptE.z ? ptE : ptS) ;
   // elimino eventuale piccolo errore di perpendicolarità del movimento rispetto all'utensile
   Vector3d vtErr = 0.5 * ( ( ptF - ptI) * vtToolDir) * vtToolDir ;
   ptI += vtErr ;
   ptF -= vtErr ;
   Point3d ptIxy( ptI.x, ptI.y, 0) ;

   Point3d ptIStemT = ptI - vtToolDir * dStemHeigth ;
   Point3d ptFStemT = ptF - vtToolDir * dStemHeigth ;

  // Quote punti iniziale e finale
   double dZI = ptI.z ;
   double dZF = ptF.z ;
   double dDeltaZ = ptF.z - ptI.z ;

  // Vettori caratterizzanti il moto 
   Vector3d vtMove = ptF - ptI ;
   double dLenXY = vtMove.LenXY() ;
   vtMove.Normalize() ;
  
  // Sistema di riferimento ad hoc
   Vector3d vtV1( - vtToolDir.x, - vtToolDir.y, 0) ;
   vtV1.Normalize() ;
   Vector3d vtV2 = vtV1 ;
   vtV2.Rotate( Z_AX, 0, 1) ;
   if ( vtV2 * vtMove < 0)
      vtV2 = - vtV2 ;

  // Vettori e punti determinanti i piani
   Vector3d vtP = vtMove ;  // Se dLen < EPS_SMALL non si usa
   vtP.Rotate( vtToolDir, 0, 1) ;
   Point3d ptUp = ptI + CurrTool.GetRadius() * ( vtP.z > 0 ? vtP : - vtP) ;
   Point3d ptDw = ptI + CurrTool.GetRadius() * ( vtP.z > 0 ? - vtP : vtP) ;

   Vector3d vtPXY( vtP.x, vtP.y, 0) ;

   Vector3d vtUp = ptUp - ORIG ;  double dDotUp = vtUp * vtP ;
   Vector3d vtDw = ptDw - ORIG ;  double dDotDw = vtDw * vtP ;

   double dSmall = CurrTool.GetRadius() * vtPXY.LenXY() ;

  // Parte sferica
   double dCos = vtMove.z ; // vtMove.z > 0 : ptF.z >= ptI.z
   double dSin = ( dCos < 1 ? sqrt( 1 - dCos * dCos) : 0) ;

   double dInfZ, dSupZ ;

   if ( dLenXY < EPS_SMALL) {

      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            double dX = ( i + 0.5) * m_dStep ;
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;
            Vector3d vtC = ptC - ptIxy ;

            double dP1 = vtC * vtV1 ;
            double dP2 = vtC * vtV2 ;

            Vector3d vtNmin, vtNmax ;

            if ( dP1 > EPS_SMALL  &&  dP1 < dStemHeigth - EPS_SMALL  && 
                 dP2 > - CurrTool.GetRadius() + EPS_SMALL  &&
                 dP2 < CurrTool.GetRadius() - EPS_SMALL) {

               dInfZ = ptI.z - sqrt( dSqRad - dP2 * dP2) ;
               dSupZ = ptF.z + sqrt( dSqRad - dP2 * dP2) ;

               Point3d ptIntInf( dX, dY, dInfZ) ;
               Point3d ptIntSup( dX, dY, dSupZ) ;

               vtNmin = - ( ptIntInf - ptI) + ( ptIntInf - ptI) * vtV1 * vtV1 ;
               vtNmax = - ( ptIntSup - ptF) + ( ptIntSup - ptF) * vtV1 * vtV1 ;

               vtNmin.Normalize() ;
               vtNmax.Normalize() ;

               SubtractIntervals( nGrid, i, j, dInfZ, dSupZ, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
            }

            if ( CurrTool.GetType() == Tool::BALLMILL) {

               if ( dP1 > dStemHeigth - 2 * EPS_SMALL && ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) + dP2 * dP2 < dSafeSqRad) {

                  dInfZ = ptI.z - sqrt( dSqRad - ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) - dP2 * dP2) ;
                  dSupZ = ptF.z + sqrt( dSqRad - ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) - dP2 * dP2) ;

                  Point3d ptIntInf( dX, dY, dInfZ) ;
                  Point3d ptIntSup( dX, dY, dSupZ) ;

                  vtNmin = ptIStemT - ptIntInf ;
                  vtNmax = ptFStemT - ptIntSup ;

                  vtNmin.Normalize() ;
                  vtNmax.Normalize() ;

                  SubtractIntervals( nGrid, i, j, dInfZ, dSupZ, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
               }
            }
         }
      }
   }

   else {
      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            double dX = ( i + 0.5) * m_dStep ;
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;
            Vector3d vtC = ptC - ptIxy ;

            double dP1 = vtC * vtV1 ;
            double dP2 = vtC * vtV2 ;

           // Parte cilindrica 
            if ( dP1 > EPS_SMALL  &&  dP1 < dStemHeigth - EPS_SMALL) {

               if ( dP2 > - CurrTool.GetRadius()  &&  dP2 < dLenXY + CurrTool.GetRadius()) {

                  Vector3d vtNmin, vtNmax ;

                 // Massimi 
                  if ( dP2 < - dSmall + EPS_SMALL) {
                     double dHsq = dSqRad - dP2 * dP2 ;
                     double dH = ( dHsq > 0 ? sqrt( dHsq) : 0) ;
                     dSupZ = dZI + dH ; 
                     Point3d ptInt( dX, dY, dSupZ) ;
                     vtNmax = - ( ptInt - ptI - ( ptInt - ptI) * vtToolDir * vtToolDir) ;
                     vtNmax.Normalize() ;
                  }

                  else if ( dP2 < dLenXY - dSmall - EPS_SMALL) {
                     dSupZ = ( dDotUp - dX * vtP.x - dY * vtP.y) / vtP.z ;
                     Vector3d vtT = vtToolDir ^ vtMove ; 
                     vtNmax = ( vtT.z < 0 ? vtT : - vtT) ;
                     vtNmax.Normalize() ;
                  }

                  else {
                     double dH = sqrt( dSqRad - ( dP2 - dLenXY) * ( dP2 - dLenXY)) ;
                     dSupZ = dZF + dH ;
                     Point3d ptInt( dX, dY, dSupZ) ;
                     vtNmax = - ( ptInt - ptF - ( ptInt - ptF) * vtToolDir * vtToolDir) ;
                     vtNmax.Normalize() ;
                  }

                 // Minimi
                  if ( dP2 < dSmall + EPS_SMALL) {
                     double dHsq = dSqRad - dP2 * dP2 ;
                     double dH = ( dHsq > 0 ? sqrt( dHsq) : 0) ;
                     dInfZ = dZI - dH ;    
                     Point3d ptInt( dX, dY, dInfZ) ;
                     vtNmin = - ( ( ptInt - ptI) - ( ptInt - ptI) * vtToolDir * vtToolDir) ;
                     vtNmin.Normalize() ;
                  }

                  else if ( dP2 < dLenXY + dSmall - EPS_SMALL) {
                     dInfZ = ( dDotDw - dX * vtP.x - dY * vtP.y) / vtP.z ;
                     Vector3d vtT = vtToolDir ^ vtMove ; 
                     vtNmin = ( vtT.z < 0 ? - vtT : vtT) ;
                     vtNmin.Normalize() ;
                  }

                  else {
                     double dH = sqrt( dSqRad - ( dP2 - dLenXY) * ( dP2 - dLenXY)) ;
                     dInfZ = dZF - dH ;
                     Point3d ptInt( dX, dY, dInfZ) ;
                     vtNmin = - ( ( ptInt - ptF) -   ( ptInt - ptF) * vtToolDir * vtToolDir) ;
                     vtNmin.Normalize() ;
                  }

                  SubtractIntervals( nGrid, i, j, dInfZ, dSupZ, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
               }
            }

           // Se l'utensile è ball-end sottraggo la punta
            if ( CurrTool.GetType() == Tool::BALLMILL) {

               if ( ( ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) + dP2 * dP2 < dSqRad  ||
                      ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) + ( dP2 - dLenXY) * ( dP2 - dLenXY) < dSqRad  ||
                      ( dP2 > 0 && dP2 < dLenXY  &&  dP1 < CurrTool.GetHeigth()))  &&  ( dP1 > dStemHeigth - 2 * EPS_SMALL)) {

                  double dSqRoot = sqrt( dSqRad - ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth)) ;
                  double dP2_0 = dCos * dSqRoot ;
                  double dH0 = dSin * dSqRoot ;

                  double dMin, dMax ;

                  Vector3d vtNmin, vtNmax ;

                 // Massimo
                  if ( dP2 < - dP2_0) {
                     dMax = dZI + sqrt( dSqRad - ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) - dP2 * dP2) ;
                     Point3d ptInt( dX, dY, dMax) ;
                     vtNmax = ptIStemT - ptInt ;
                     vtNmax.Normalize() ;
                  }

                  else if ( dP2 < dLenXY - dP2_0) {
                     dMax = dZI + dH0 + dDeltaZ * ( dP2 + dP2_0) / dLenXY ;
                     Point3d ptInt( dX, dY, dMax) ;
                     vtNmax = - ( ptInt - ptIStemT) + ( ptInt - ptIStemT) * vtMove * vtMove ;
                     vtNmax.Normalize() ;
                  }

                  else { 
                     dMax = dZF + sqrt( dSqRad - ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) - ( dP2 - dLenXY) * ( dP2 - dLenXY)) ;
                     Point3d ptInt( dX, dY, dMax) ;
                     vtNmax = ptFStemT - ptInt;
                     vtNmax.Normalize() ;
                  }

                 // Minimo
                  if ( dP2 < dP2_0) {
                     dMin = dZI - sqrt( dSqRad - ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) - dP2 * dP2) ;
                     Point3d ptInt( dX, dY, dMin) ;
                     vtNmin = ptIStemT - ptInt ;
                     vtNmin.Normalize() ;
                  }

                  else if ( dP2 < dLenXY + dP2_0) {
                     dMin =  dZI - dH0 + dDeltaZ * ( dP2 - dP2_0) / dLenXY ;
                     Point3d ptInt( dX, dY, dMin) ;
                     vtNmin = - ( ptInt - ptIStemT) + ( ptInt - ptIStemT) * vtMove * vtMove ;
                     vtNmin.Normalize() ;
                  }

                  else {
                     dMin = dZF - sqrt( dSqRad - ( dP1 - dStemHeigth) * ( dP1 - dStemHeigth) - ( dP2 - dLenXY) * ( dP2 - dLenXY)) ;
                     Point3d ptInt( dX, dY, dMin) ;
                     vtNmin = ptFStemT - ptInt ;
                     vtNmin.Normalize() ;
                  }

                  SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
               }
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CylBall_XYMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   if ( CurrTool.GetType() == Tool::CYLMILL)
      return CompCyl_Milling( nGrid, ptS, ptE, vtToolDir, CurrTool.GetHeigth(), CurrTool.GetRadius(), false, false, CurrTool.GetToolNum()) ;

   else if ( CurrTool.GetType() == Tool::BALLMILL) {
      double dHei = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ; 
      CompCyl_Milling( nGrid, ptS, ptE, vtToolDir, dHei, CurrTool.GetRadius(), false, false, CurrTool.GetToolNum()) ;
      CompBall_Milling( nGrid, ptS - dHei * vtToolDir, ptE - dHei * vtToolDir, CurrTool.GetRadius(), CurrTool.GetToolNum()) ;
      return true ;
   }

   else
      return false ;
}


// --------- Coni ------------------------------------------------------------
//----------------------------------------------------------------------------
bool
VolZmap::Conus_XYDrilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
   double dMinRad = min( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dMaxRad = max( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dDeltaRad = dMaxRad - dMinRad ;

  // Geometria del moto
   double dLenXY = ( ptE - ptS).LenXY() ;
   Point3d ptI = ( vtToolDir * ( ptE - ptS) < 0 ? ptS : ptE) ;
   double dMatStemLen = ( CurrTool.GetRadius() > CurrTool.GetTipRadius() ? dStemHeigth + dLenXY : dStemHeigth) ;
   double dSqTipRad = CurrTool.GetTipRadius() * CurrTool.GetTipRadius() ;
   double dSqRad = CurrTool.GetRadius() * CurrTool.GetRadius() ;

  // Determinazione del vertice del cono
   double dL = CurrTool.GetTipHeigth() * dMaxRad / dDeltaRad ;

   Point3d ptV ;  // Vertice
   Vector3d vtV ; // Vettore riferimento con origine nel vertice

   if ( CurrTool.GetRadius() > CurrTool.GetTipRadius()) {
      vtV = vtToolDir ;
      ptV = ( vtToolDir * ( ptE - ptS) < 0 ? ptE : ptS) - vtToolDir * ( dStemHeigth + dL) ;
   }

   else {
      vtV = - vtToolDir ;
      ptV = ( vtToolDir * ( ptE - ptS) < 0 ? ptS : ptE) - vtToolDir * ( CurrTool.GetHeigth() - dL) ;
   }

  // Sistema di riferimento sul piano
   Vector3d vtV1 = - vtToolDir ;
   Vector3d vtV2 = vtV1 ;
   vtV2.Rotate( Z_AX, 0, 1) ;

  // Proiezione di ptI sul piano
   Point3d ptIxy( ptI.x, ptI.y, 0) ;

  // Ciclo sui punti
   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
        
         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC ( dX, dY, 0) ;
         Vector3d vtC = ptC - ptIxy ;

         double dX1 = vtC * vtV1 ;
         double dX2 = vtC * vtV2 ;

         double dr = CurrTool.GetRadius() + ( dX1 - dMatStemLen) * ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) / CurrTool.GetTipHeigth() ; 

         if ( dX1 > EPS_SMALL  &&  dX1 < dMatStemLen  &&  abs( dX2) < CurrTool.GetRadius()) {

            double dH = sqrt( dSqRad - dX2 * dX2) ;
            double dMin = ptI.z - dH ;
            double dMax = ptI.z + dH ;

            Point3d ptIntMin( dX, dY, dMin) ;
            Vector3d vtNmin = ( ptI - ptIntMin) - ( ptI - ptIntMin) * vtV1 * vtV1 ;
            vtNmin.Normalize() ;

            Point3d ptIntMax( dX, dY, dMax) ;
            Vector3d vtNmax = ( ptI - ptIntMax) - ( ptI - ptIntMax) * vtV1 * vtV1 ;
            vtNmax.Normalize() ;

            SubtractIntervals( nGrid, i, j, ptI.z - dH, ptI.z + dH, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
         }

         else if ( dX1 >= dMatStemLen  && 
                   dX1 < dMatStemLen + CurrTool.GetTipHeigth() - EPS_SMALL  &&
                   abs( dX2) < dr) {

            double dH = sqrt( dr * dr - dX2 * dX2) ;
            double dMin = ptI.z - dH ;
            double dMax = ptI.z + dH ;

            Point3d ptIntMin( dX, dY, dMin) ;
            Vector3d vtUmin = ( ptIntMin - ptV) - ( ptIntMin - ptV) * vtV * vtV ;
            vtUmin.Normalize() ;
            Vector3d vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtUmin ;
            vtNmin.Normalize() ;

            Point3d ptIntMax( dX, dY, dMax) ;
            Vector3d vtUmax = ( ptIntMax - ptV) - ( ptIntMax - ptV) * vtV * vtV ;
            vtUmax.Normalize() ;
            Vector3d vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtUmax ;
            vtNmax.Normalize() ;

            SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
         }

         if ( CurrTool.GetTipRadius() >= CurrTool.GetRadius()) {

            if ( dX1 > dMatStemLen + CurrTool.GetTipHeigth() - 2 * EPS_SMALL  && 
                 dX1 < dMatStemLen + CurrTool.GetTipHeigth() + dLenXY - EPS_SMALL  &&
                 abs( dX2) < dSqTipRad) {

               double dH = sqrt( dSqTipRad - dX2 * dX2) ;
               double dMin = ptI.z - dH ;
               double dMax = ptI.z + dH ;

               Point3d ptIntMin( dX, dY, dMin) ;
               Vector3d vtNmin = ( ptI - ptIntMin) - ( ptI - ptIntMin) * vtV1 * vtV1 ;
               vtNmin.Normalize() ;

               Point3d ptIntMax( dX, dY, dMax) ;
               Vector3d vtNmax = ( ptI - ptIntMax) - ( ptI - ptIntMax) * vtV1 * vtV1 ;
               vtNmax.Normalize() ;

               SubtractIntervals( nGrid, i, j, ptI.z - dH, ptI.z + dH, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Conus_XYPerp( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir) 
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestToolBBox( nGrid, ptS, ptE, vtToolDir, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici dell'utensile
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth()  ;
   double dMinRad = min( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dMaxRad = max( CurrTool.GetRadius(), CurrTool.GetTipRadius()) ;
   double dSqRad = CurrTool.GetRadius() * CurrTool.GetRadius() ;
   double dDeltaRad = dMaxRad - dMinRad ;

  // Studio delle simmetrie del moto
   Point3d ptI = ( ptS.z < ptE.z ? ptS : ptE) ;
   Point3d ptF = ( ptS.z < ptE.z ? ptE : ptS) ;
   // elimino eventuale piccolo errore di perpendicolarità del movimento rispetto all'utensile
   Vector3d vtErr = 0.5 * ( ( ptF - ptI) * vtToolDir) * vtToolDir ;
   ptI += vtErr ;
   ptF -= vtErr ;
   Point3d ptIxy( ptI.x, ptI.y, 0) ;
   Point3d ptFxy( ptF.x, ptF.y, 0) ;

  // Cinematica del moto
   Vector3d vtMove = ptF - ptI ;
   double dLengthPathXY = vtMove.LenXY() ;
   double dDeltaZ = ptF.z - ptI.z ;
   double dZI = ptI.z ;
   double dZF = ptF.z ;
   vtMove.Normalize() ;

  // Riferimento coni
   double dL = CurrTool.GetTipHeigth() * dMaxRad / dDeltaRad ;
   Vector3d vtV = ( CurrTool.GetRadius() > CurrTool.GetTipRadius() ? vtToolDir : - vtToolDir) ; 
   Point3d ptVI = ptI - ( CurrTool.GetRadius() > CurrTool.GetTipRadius() ? dStemHeigth + dL : CurrTool.GetHeigth() - dL) * vtToolDir ;
   Point3d ptVF = ptF - ( CurrTool.GetRadius() > CurrTool.GetTipRadius() ? dStemHeigth + dL : CurrTool.GetHeigth() - dL) * vtToolDir ;

  // Movimento verticale 
   if ( dLengthPathXY < EPS_SMALL) {
   
     // Riferimento sul piano
      Vector3d vtV1 = - vtToolDir ;
      Vector3d vtV2( - vtV1.y, vtV1.x, 0) ;

      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
         
            double dX = ( i + 0.5) * m_dStep ;
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;
            Vector3d vtC = ptC - ptIxy ;

            double dP1 = vtC * vtV1 ;
            double dP2 = vtC * vtV2 ;
          
           // Parte cilindrica 
            if ( dP1 > EPS_SMALL  &&  dP1 <= dStemHeigth  && 
                 dP2 > - CurrTool.GetRadius() + EPS_SMALL  &&  dP2 < CurrTool.GetRadius() - EPS_SMALL) {

               double dMin = dZI - sqrt( dSqRad - dP2 * dP2) ;
               double dMax = dZF + sqrt( dSqRad - dP2 * dP2) ;

               Point3d ptIntMin( dX, dY, dMin) ;
               Vector3d vtNmin = - ( ptIntMin - ptI) + ( ptIntMin - ptI) * vtV1 * vtV1 ;
               vtNmin.Normalize() ;

               Point3d ptIntMax( dX, dY, dMax) ;
               Vector3d vtNmax = - ( ptIntMax - ptF) + ( ptIntMax - ptF) * vtV1 * vtV1 ;
               vtNmax.Normalize() ;

               SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
            }

           // Parte conica
            else if ( dP1 > dStemHeigth && dP1 < CurrTool.GetHeigth() - EPS_SMALL && abs( dP2) < CurrTool.GetRadius() + 
                    ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth() - EPS_SMALL) {

               double dr = dP2 ;
               double dMr = CurrTool.GetRadius() + ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth() ;

               double dMin = dZI - sqrt( dMr * dMr - dr * dr) ;
               double dMax = dZF + sqrt( dMr * dMr - dr * dr) ;

               Point3d ptIntMin( dX, dY, dMin) ;
               Vector3d vtUmin = ( ptIntMin - ptVI) - ( ptIntMin - ptVI) * vtV * vtV ;
               vtUmin.Normalize() ;
               Vector3d vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtUmin ;
               vtNmin.Normalize() ;

               Point3d ptIntMax( dX, dY, dMax) ;
               Vector3d vtUmax = ( ptIntMax - ptVF) - ( ptIntMax - ptVF) * vtV * vtV ;
               vtUmax.Normalize() ;
               Vector3d vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtUmax ;
               vtNmax.Normalize() ;

               SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
            }
         }
      }
   }

   else {
     // Riferimento sul piano
      Vector3d vtV1 = - vtToolDir ;
      Vector3d vtV2( vtMove.x, vtMove.y, 0) ;
      vtV2.Normalize() ;
     // Vettore per individuare i punti di tangenza 
     // dei piani con il cilindro
      Vector3d vtCross = vtToolDir ^ vtMove ;
      if ( vtCross.z < 0)  vtCross = - vtCross ;
     // Punti di tangenza
      Point3d ptUp = ptI - vtToolDir * dStemHeigth + CurrTool.GetRadius() * vtCross ;
      Point3d ptDw = ptI - vtToolDir * dStemHeigth - CurrTool.GetRadius() * vtCross ;
      double dSmallLength = CurrTool.GetRadius() * vtCross.LenXY() ;
     // Punti di tangenza in corrispondenza della punta 
      Point3d ptTipUp = ptI - vtToolDir * CurrTool.GetHeigth() + CurrTool.GetTipRadius() * vtCross ;
      Point3d ptTipDw = ptI - vtToolDir * CurrTool.GetHeigth() - CurrTool.GetTipRadius() * vtCross ;

      Vector3d vtUpTan = ptTipUp - ptUp ;
      Vector3d vtDwTan = ptTipDw - ptDw ;

      Vector3d vtUpTanXY( vtUpTan.x, vtUpTan.y, 0) ;
      double dDeltaSmallAbs =  abs( vtUpTanXY * vtV2) ;
      double dDeltaSmall = ( CurrTool.GetRadius() > CurrTool.GetTipRadius() ? dDeltaSmallAbs : - dDeltaSmallAbs) ;

      vtUpTan.Normalize() ;
      vtDwTan.Normalize() ;

      Vector3d vtUpCross = vtMove ^ vtUpTan ;
      Vector3d vtDwCross = - vtMove ^ vtDwTan ;

      if ( vtUpCross.z > 0) 
         vtUpCross = - vtUpCross ;

      if ( vtDwCross.z < 0) 
         vtDwCross = - vtDwCross ;

     // Descrizione piani tangenti al cono
      Vector3d vtR0Up = ptUp - ORIG ;
      Vector3d vtR0Dw = ptDw - ORIG ;

      double dDotUp = vtR0Up * vtUpCross ;
      double dDotDw = vtR0Dw * vtDwCross ;

      double dMin, dMax ;
      Vector3d vtNmin, vtNmax ;
      Point3d ptInt ;

      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            double dX = ( i + 0.5) * m_dStep ;
            double dY = ( j + 0.5) * m_dStep ;

            Point3d ptC( dX, dY, 0) ;

            Vector3d vtC = ptC - ptIxy ;

            double dP1 = vtC * vtV1 ;
            double dP2 = vtC * vtV2 ;

           // Parte cilindrica
            if ( dP1 > EPS_SMALL && dP1 <= dStemHeigth &&  // vedere se conviene dP1 < dStemHeigth + eps oppure  dP1 <= dStemHeigth
                 dP2 > - CurrTool.GetRadius() && dP2 < dLengthPathXY + CurrTool.GetRadius()) {

              // Massimi
               if ( dP2 < - dSmallLength) {
                  dMax = dZI + sqrt( dSqRad - dP2 * dP2) ;
                  ptInt.Set( dX, dY, dMax) ;
                  vtNmax = - ( ptInt - ptI) + ( ptInt - ptI) * vtV1 * vtV1 ; 
                  vtNmax.Normalize() ;
               }  

               else if ( dP2 < dLengthPathXY - dSmallLength) {
                  dMax = ptUp.z + dDeltaZ * ( dP2 + dSmallLength) / dLengthPathXY ;
                  vtNmax = - vtCross ;
               }

               else {
                  dMax = dZF + sqrt( dSqRad - ( dP2 - dLengthPathXY) * ( dP2 - dLengthPathXY)) ;
                  ptInt.Set( dX, dY, dMax) ;
                  vtNmax = - ( ptInt - ptF) + ( ptInt - ptF) * vtV1 * vtV1 ;
                  vtNmax.Normalize() ;
               }

              // Minimi 
               if ( dP2 < dSmallLength) {
                  dMin = dZI - sqrt( dSqRad - dP2 * dP2) ;
                  ptInt.Set( dX, dY, dMin) ;
                  vtNmin = - ( ptInt - ptI) + ( ptInt - ptI) * vtV1 * vtV1 ;
                  vtNmin.Normalize() ;
               }

               else if ( dP2 < dLengthPathXY + dSmallLength) {
                  dMin = ptDw.z + dDeltaZ * ( dP2 - dSmallLength) / dLengthPathXY ;
                  vtNmin = vtCross ;
               }

               else {
                  dMin = dZF - sqrt( dSqRad - ( dP2 - dLengthPathXY) * ( dP2 - dLengthPathXY)) ;
                  ptInt.Set( dX, dY, dMin) ;
                  vtNmin = - ( ptInt - ptF) + ( ptInt - ptF) * vtV1 * vtV1 ;
                  vtNmin.Normalize() ;
               }

               SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
            }

           // Parte conica
            else if ( dP1 > dStemHeigth && dP1 < CurrTool.GetHeigth() - EPS_SMALL && 
                      dP2 > - CurrTool.GetRadius() - ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth() &&
                      dP2 <   CurrTool.GetRadius() + dLengthPathXY + 
                    ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth()) {

              // Massimi
               if ( dP2 < - dSmallLength + dDeltaSmall * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth()) {

                  double dr = dP2 ;
                  double dMr = CurrTool.GetRadius() + ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth() ;

                  dMax = dZI + sqrt( dMr * dMr - dr * dr) ;

                  ptInt.Set( dX, dY, dMax) ;

                  Vector3d vtU = ( ptInt - ptVI) - ( ptInt - ptVI) * vtV * vtV ;
                  vtU.Normalize() ;
                  vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                  vtNmax.Normalize() ;
               }

               else if ( dP2 < dLengthPathXY - dSmallLength + 
                         dDeltaSmall * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth()) {
                  dMax = ( dDotUp - dX * vtUpCross.x - dY * vtUpCross.y) / vtUpCross.z ;
                  vtNmax = vtUpCross ;
               }

               else {
                  double dr = dP2 - dLengthPathXY ; 
                  double dMr = CurrTool.GetRadius() + ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth() ;

                  dMax = dZF + sqrt( dMr * dMr - dr * dr) ;

                  ptInt.Set( dX, dY, dMax) ;

                  Vector3d vtU = ( ptInt - ptVF) - ( ptInt - ptVF) * vtV * vtV ;
                  vtU.Normalize() ;
                  vtNmax = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                  vtNmax.Normalize() ;
               }

              // Minimi
               if ( dP2 < dSmallLength - dDeltaSmall * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth()) {

                  double dr = dP2 ;
                  double dMr = CurrTool.GetRadius() + ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth() ;

                  dMin = dZI - sqrt( dMr * dMr - dr * dr) ;

                  ptInt.Set( dX, dY, dMin) ;

                  Vector3d vtU = ( ptInt - ptVI) - ( ptInt - ptVI) * vtV * vtV ;
                  vtU.Normalize() ;
                  vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                  vtNmin.Normalize() ;
               }

               else if ( dP2 < dLengthPathXY + dSmallLength - dDeltaSmall * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth()) {
                  dMin = ( dDotDw - dX * vtDwCross.x - dY * vtDwCross.y) / vtDwCross.z ;
                  vtNmin = vtDwCross ;
               }

               else {

                  double dr = dP2 - dLengthPathXY ; 
                  double dMr = CurrTool.GetRadius() + ( CurrTool.GetTipRadius() - CurrTool.GetRadius()) * ( dP1 - dStemHeigth) / CurrTool.GetTipHeigth() ;

                  dMin = dZF - sqrt( dMr * dMr - dr * dr) ;

                  ptInt.Set( dX, dY, dMin) ;

                  Vector3d vtU = ( ptInt - ptVF) - ( ptInt - ptVF) * vtV * vtV ;
                  vtU.Normalize() ;
                  vtNmin = dDeltaRad * vtV - CurrTool.GetTipHeigth() * vtU ;
                  vtNmin.Normalize() ;
               }

               SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Conus_XYMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;

   CompCyl_Milling( nGrid, ptS, ptE, vtToolDir, dStemHeigth, CurrTool.GetRadius(), false, true, CurrTool.GetToolNum()) ;

   if ( CurrTool.GetTipRadius() < CurrTool.GetRadius()) {
      Point3d ptSTip = ptS - dStemHeigth * vtToolDir ;
      Point3d ptETip = ptE - dStemHeigth * vtToolDir ;
      CompConus_Milling( nGrid, ptSTip, ptETip, vtToolDir,
                         CurrTool.GetTipHeigth(), CurrTool.GetRadius(), CurrTool.GetTipRadius(),
                         true, false, V_NULL, V_NULL, CurrTool.GetToolNum()) ;
   }

   else {
      Point3d ptSTip = ptS - CurrTool.GetHeigth() * vtToolDir ;
      Point3d ptETip = ptE - CurrTool.GetHeigth() * vtToolDir ;
      CompConus_Milling( nGrid, ptSTip, ptETip, - vtToolDir,
                         CurrTool.GetTipHeigth(), CurrTool.GetTipRadius(), CurrTool.GetRadius(),
                         false, true, V_NULL, V_NULL, CurrTool.GetToolNum()) ;
   }

   return true ;
}

// ---------- VERSORE UTENSILE CON ORIENTAZIONE GENERICA ---------------------

// ---------- Cilindro e sfera -----------------------------------------------
//----------------------------------------------------------------------------
bool
VolZmap::CylBall_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Altezza cilindro
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
  // Sottraggo cilindro
   CompCyl_Drilling( nGrid, ptS, ptE, vtToolDir, dStemHeigth, CurrTool.GetRadius(), false, false, CurrTool.GetToolNum()) ;
  // Se è sfera la sottraggo 
   if ( CurrTool.GetType() == Tool::BALLMILL) {
      Point3d ptSBall = ptS - dStemHeigth * vtToolDir ;
      Point3d ptEBall = ptE - dStemHeigth * vtToolDir ;
      CompBall_Milling( nGrid, ptSBall, ptEBall, CurrTool.GetRadius(), CurrTool.GetToolNum()) ;
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CylBall_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Altezza cilindro
   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;
  // Sottraggo cilindro
   CompCyl_Milling( nGrid, ptS, ptE, vtToolDir, dStemHeigth, CurrTool.GetRadius(), false, false, CurrTool.GetToolNum()) ;
  // Se è sfera la sottraggo
   if ( CurrTool.GetType() == Tool::BALLMILL) {
      Point3d ptSBall = ptS - dStemHeigth * vtToolDir ;
      Point3d ptEBall = ptE - dStemHeigth * vtToolDir ;
      CompBall_Milling( nGrid, ptSBall, ptEBall, CurrTool.GetRadius(), CurrTool.GetToolNum()) ;
   }
   return true ;
}

// ---------- Coni -----------------------------------------------------------
//----------------------------------------------------------------------------
bool
VolZmap::Conus_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;

   CompCyl_Drilling( nGrid, ptS, ptE, vtToolDir, dStemHeigth, CurrTool.GetRadius(), false, true, CurrTool.GetToolNum()) ;

  // Trapano
   if ( CurrTool.GetTipRadius() < CurrTool.GetRadius()) {
      Point3d ptSCone = ptS - dStemHeigth * vtToolDir ;
      Point3d ptECone = ptE - dStemHeigth * vtToolDir ;
      CompConus_Drilling( nGrid, ptSCone, ptECone, vtToolDir,
                          CurrTool.GetTipHeigth(), CurrTool.GetRadius(), CurrTool.GetTipRadius(),
                          true, false, V_NULL, V_NULL, CurrTool.GetToolNum()) ;
   }

   else {
      Point3d ptSCone = ptS - CurrTool.GetHeigth() * vtToolDir ;
      Point3d ptECone = ptE - CurrTool.GetHeigth() * vtToolDir ;
      CompConus_Drilling( nGrid, ptSCone, ptECone, - vtToolDir,
                          CurrTool.GetTipHeigth(), CurrTool.GetTipRadius(), CurrTool.GetRadius(),
                          false, true, V_NULL, V_NULL, CurrTool.GetToolNum()) ;
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Conus_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   double dStemHeigth = CurrTool.GetHeigth() - CurrTool.GetTipHeigth() ;

   CompCyl_Milling( nGrid, ptS, ptE, vtToolDir, dStemHeigth, CurrTool.GetRadius(), false, true, CurrTool.GetToolNum()) ;

  // Trapano
   if ( CurrTool.GetTipRadius() < CurrTool.GetRadius()) {
      Point3d ptSBall = ptS - dStemHeigth * vtToolDir ;
      Point3d ptEBall = ptE - dStemHeigth * vtToolDir ;
      CompConus_Milling( nGrid, ptSBall, ptEBall, vtToolDir, CurrTool.GetTipHeigth(),
                         CurrTool.GetRadius(), CurrTool.GetTipRadius(), true, false, V_NULL, V_NULL, CurrTool.GetToolNum()) ;  
   }

   else {
      Point3d ptSBall = ptS - CurrTool.GetHeigth() * vtToolDir ;
      Point3d ptEBall = ptE - CurrTool.GetHeigth() * vtToolDir ;
      CompConus_Milling( nGrid, ptSBall, ptEBall, - vtToolDir, CurrTool.GetTipHeigth(),
                         CurrTool.GetTipRadius(), CurrTool.GetRadius(), false, true, V_NULL, V_NULL, CurrTool.GetToolNum()) ;
   }

   return true ;
}

// ---------- Mortasatrice ---------------------------------------------------
//----------------------------------------------------------------------------
bool
VolZmap::Mrt_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, const Vector3d& vtAux)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Proiezione della traiettoria sul piano dei movimenti possibili
   Point3d ptEOnP = ptS + ( ptE - ptS) * vtToolDir * vtToolDir ;

  // Scompongo la mortasatrice in solidi semplici

  // Parallelepipedo di base
   double dLenX = CurrTool.GetMrtChsWidth() ;
   double dLenY = CurrTool.GetMrtChsThickness() ;
   double dLenZ = CurrTool.GetHeigth() - CurrTool.GetCornRadius() ;
   CompPar_Drilling( nGrid, dLenX, dLenY, dLenZ, ptS, ptEOnP, vtToolDir, vtAux, CurrTool.GetToolNum()) ;
  
  // Se la punta è di tipo bull-nose
   if ( abs( CurrTool.GetMrtChsWidth() - 2 * CurrTool.GetCornRadius()) > EPS_SMALL) {

     // Parallelepipedo di punta 
      Point3d ptTipS = ptS - dLenZ * vtToolDir ; 
      Point3d ptTipE = ptEOnP - dLenZ * vtToolDir ;

      dLenX = abs( CurrTool.GetMrtChsWidth() - 2 * CurrTool.GetCornRadius()) ;
      dLenZ = CurrTool.GetCornRadius() ;

      CompPar_Drilling( nGrid, dLenX, dLenY, dLenZ, ptTipS, ptTipE, vtToolDir, vtAux, CurrTool.GetToolNum()) ;

      Vector3d vtVOnP = vtToolDir ^ vtAux ;

     // Cilindri 
      Point3d ptSminus = ptTipS - ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;
      Point3d ptEminus = ptTipE - ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;  
      Point3d ptSplus = ptTipS + ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;
      Point3d ptEplus = ptTipE + ( 0.5 * dLenX) * vtVOnP + 0.5 * dLenY * vtAux ;  

      CompCyl_Milling( nGrid, ptSminus, ptEminus, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
      CompCyl_Milling( nGrid, ptSplus, ptEplus, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
   }

  // se la punta è di tipo sfera
   else {
     // Cilindro
      Point3d ptCylS = ptS - dLenZ * vtToolDir + 0.5 * dLenY * vtAux ;
      Point3d ptCylE = ptEOnP - dLenZ * vtToolDir + 0.5 * dLenY * vtAux ;
      CompCyl_Milling( nGrid, ptCylS, ptCylE, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Mrt_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, const Vector3d& vtAux)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Scompongo la mortasatrice in solidi semplici

  // Parallelepipedo di base
   double dLenX = CurrTool.GetMrtChsWidth() ;
   double dLenY = CurrTool.GetMrtChsThickness() ;
   double dLenZ = CurrTool.GetHeigth() - CurrTool.GetCornRadius() ;

   Point3d ptBasePS = ptS - 0.5 * dLenZ * vtToolDir + 0.5 * dLenY * vtAux ;
   Point3d ptBasePE = ptE - 0.5 * dLenZ * vtToolDir + 0.5 * dLenY * vtAux ;

   CompPar_Milling( nGrid, dLenX, dLenZ, dLenY, ptBasePS, ptBasePE, vtAux, vtToolDir, CurrTool.GetToolNum()) ;
  // Se la punta è di tipo bull-nose
   if ( abs( CurrTool.GetMrtChsWidth() - 2 * CurrTool.GetCornRadius()) > EPS_SMALL) {
   
     // Parallelepipedo di punta 
      Point3d ptTipPS = ptBasePS - 0.5 * dLenZ * vtToolDir ;
      Point3d ptTipPE = ptBasePE - 0.5 * dLenZ * vtToolDir ;

      dLenX = abs( CurrTool.GetMrtChsWidth() - 2 * CurrTool.GetCornRadius()) ; 
      dLenZ = CurrTool.GetCornRadius() ;

      ptTipPS -= 0.5 * dLenZ * vtToolDir ;
      ptTipPE -= 0.5 * dLenZ * vtToolDir ;

      CompPar_Milling( nGrid, dLenX, dLenZ, dLenY, ptTipPS, ptTipPE, vtAux, vtToolDir, CurrTool.GetToolNum()) ;
     // Cilindri 
     // Vettore nel piano
      Vector3d vtVOnP = vtToolDir ^ vtAux ;
      if ( vtVOnP * ( ptE - ptS) < 0)
         vtVOnP *= -1 ;
      Point3d ptSminus = ptTipPS + 0.5 * dLenZ * vtToolDir - ( 0.5 * dLenX) * vtVOnP ;
      Point3d ptEminus = ptTipPE + 0.5 * dLenZ * vtToolDir - ( 0.5 * dLenX) * vtVOnP ;
      CompCyl_Milling( nGrid, ptSminus, ptEminus, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
      Point3d ptSplus = ptTipPS + 0.5 * dLenZ * vtToolDir + ( 0.5 * dLenX) * vtVOnP ;
      Point3d ptEplus = ptTipPE + 0.5 * dLenZ * vtToolDir + ( 0.5 * dLenX) * vtVOnP ;
      CompCyl_Milling( nGrid, ptSplus, ptEplus, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
   }

  // se la punta è di tipo sfera
   else {
     // Cilindro
      Point3d ptCylS = ptBasePS - 0.5 * dLenZ * vtToolDir ;
      Point3d ptCylE = ptBasePE - 0.5 * dLenZ * vtToolDir ;
      CompCyl_Milling( nGrid, ptCylS, ptCylE, vtAux, dLenY, CurrTool.GetCornRadius(), false, false, CurrTool.GetToolNum()) ;
   }

   return true ;
}

// ---------- Chisel ---------------------------------------------------------
//----------------------------------------------------------------------------
bool
VolZmap::Chs_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, const Vector3d& vtAux)
{  
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Proiezione della traiettoria sulla varietà del movimento
   Point3d ptProjE = ptS + ( ptE - ptS) * vtToolDir * vtToolDir ;

   CompPar_Drilling( nGrid, CurrTool.GetMrtChsWidth(), CurrTool.GetMrtChsThickness(), CurrTool.GetHeigth(),
                     ptS, ptProjE, vtToolDir, vtAux, CurrTool.GetToolNum()) ;

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::Chs_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, const Vector3d& vtAux)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Proiezione della traiettoria sul piano dei movimenti possibili
   Vector3d vtMoveOnP = ( ptE - ptS) - ( ptE - ptS) * vtToolDir * vtToolDir ;
   Point3d ptProjE = ptS + vtMoveOnP ;

   CompPar_Milling( nGrid, CurrTool.GetMrtChsWidth(), CurrTool.GetMrtChsThickness(), CurrTool.GetHeigth(),
                    ptS, ptProjE, vtToolDir, vtAux, CurrTool.GetToolNum()) ;

   return true ;
}

// ---------- Utensile generico ----------------------------------------------
//----------------------------------------------------------------------------
bool
VolZmap::GenTool_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Descrizione geometrica del moto  
   Point3d ptI = ptS ;
   Point3d ptF = ptE ;
   Vector3d vtMove = ptE - ptS ;
  // Vettore delle normali agli archi
   const VCT3DVECTOR& vArcNorm = CurrTool.GetArcNormalVec() ;
  // Poinché l'asse utensile è parallelo all'asse Z, definisco un sistema di
  // riferimento ad hoc in cui le normali agli archi giacciano nel piano XZ.
   Frame3d frNormFrame ;
   frNormFrame.Set( ORIG, X_AX, -Z_AX, Y_AX) ;
  // Ciclo sulle curve del profilo
   const CurveComposite& ToolProfile = CurrTool.GetApproxOutline() ;
   int i = - 1 ;
   const ICurve* pPrevCurve = nullptr ;
   const ICurve* pCurve = ToolProfile.GetCurve( ++ i) ;
   while ( pCurve != nullptr) {

      double dHeight = 0 ;

     // Se segmento
      if ( pCurve->GetType() == CRV_LINE) {
        // Recupero gli estremi
         const ICurveLine* pLine = GetCurveLine( pCurve) ;
         Point3d ptStart = pLine->GetStart() ;
         Point3d ptEnd = pLine->GetEnd() ;
         int nNormNum = pLine->GetTempProp();
         Vector3d vtNormSt, vtNormEn;
         if ( nNormNum != 0) {
            vtNormSt = vArcNorm[nNormNum - 1] ;
            vtNormEn = vArcNorm[nNormNum] ;
            vtNormSt.ToLoc(frNormFrame);
            vtNormEn.ToLoc(frNormFrame);
         }
        // Ne determino l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
         if ( dHeight > EPS_SMALL) {
           // Verifiche curva precedente per eventuale tappo sopra
            bool bTapT = false ;
            if ( pPrevCurve != nullptr  &&  pPrevCurve->GetType() == CRV_LINE) {
               const ICurveLine* pOthLine = GetCurveLine( pPrevCurve) ;
               Point3d ptOthStart = pOthLine->GetStart() ;
               Point3d ptOthEnd = pOthLine->GetEnd() ;  
               if ( abs( ptOthStart.y - ptOthEnd.y) < EPS_SMALL  &&  ptOthStart.x < ptOthEnd.x)
                  bTapT = true ;
            }
           // Verifiche curva successiva per eventuale tappo sotto
            bool bTapB = false ;
            const ICurve* pNextCurve = ToolProfile.GetCurve( ++ i) ;
            if ( pNextCurve != nullptr  &&  pNextCurve->GetType() == CRV_LINE) {
               const ICurveLine* pOthLine = GetCurveLine( pNextCurve) ;
               Point3d ptOthStart = pOthLine->GetStart() ;
               Point3d ptOthEnd = pOthLine->GetEnd() ;  
               if ( abs( ptOthStart.y - ptOthEnd.y) < EPS_SMALL  &&  ptOthStart.x > ptOthEnd.x)
                  bTapB = true ;
            }
           // Se X costante, è un cilindro
            if ( abs( ptStart.x - ptEnd.x) < EPS_SMALL) {
               double dRadius = ptStart.x ;
               if ( dRadius > 10 * EPS_SMALL)
                  CompCyl_Drilling( nGrid, ptI, ptF, vtToolDir, dHeight, dRadius, bTapB, bTapT, CurrTool.GetToolNum()) ;
            }
           // Se X crescente, è un cono con vettore equiverso a quello dell'utensile
            else if ( ptStart.x > ptEnd.x) {
               double dMaxRad = ptStart.x ;
               double dMinRad = ptEnd.x ;
               CompConus_Drilling( nGrid, ptI, ptF, vtToolDir, dHeight, dMaxRad, dMinRad, bTapB, bTapT, vtNormSt, vtNormEn, CurrTool.GetToolNum()) ;
            }
           // Se X decrescente, è un cono con vettore opposto a quello dell'utensile
            else if ( ptStart.x < ptEnd.x) {
               double dMaxRad = ptEnd.x ; 
               double dMinRad = ptStart.x ;
               Point3d ptIn = ptI - vtToolDir * dHeight ;
               Point3d ptFn = ptIn + vtMove ;
               vtNormEn.z *= -1 ;
               vtNormSt.z *= -1 ;
               CompConus_Drilling( nGrid, ptIn, ptFn, - vtToolDir, dHeight, dMaxRad, dMinRad, bTapT, bTapB, vtNormEn, vtNormSt, CurrTool.GetToolNum()) ;
            }
           // Passo alla curva successiva
            pPrevCurve = pCurve ;
            pCurve = pNextCurve ;
         }
         else {
           // Passo alla curva successiva
            pPrevCurve = pCurve ;
            pCurve = ToolProfile.GetCurve( ++ i) ;
         }
      }

     // Se arco
      else if ( pCurve->GetType() == CRV_ARC) { 
        // Recupero estremi, centro e raggio
         const ICurveArc* pArc = GetCurveArc( pCurve) ;
         Point3d ptStart ; pArc->GetStartPoint( ptStart) ;
         Point3d ptEnd ; pArc->GetEndPoint( ptEnd) ;
         Point3d ptCen = pArc->GetCenter() ;
         double dRadius = pArc->GetRadius() ;
        // Determino le posizioni iniziale e finale del centro della sfera
         Point3d ptCenS = ptI - vtToolDir * ( ptStart.y - ptCen.y) ;
         Point3d ptCenE = ptCenS + vtMove ;
        // Eseguo l'asportazione del materiale
         CompBall_Milling( nGrid, ptCenS, ptCenE, dRadius, CurrTool.GetToolNum()) ;
        // aggiorno l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
        // Passo alla curva successiva
         pPrevCurve = pCurve ;
         pCurve = ToolProfile.GetCurve( ++ i) ;
      } 

     // Determino le posizioni iniziale e finale del componente successivo
      ptI = ptI - vtToolDir * dHeight ;
      ptF = ptI + vtMove ;
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::GenTool_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

  // Descrizione geometrica del moto  
   Point3d ptI = ptS ;
   Point3d ptF = ptE ;
   Vector3d vtMove = ptE - ptS ;
  // Vettore delle normali agli archi
   const VCT3DVECTOR& vArcNorm = CurrTool.GetArcNormalVec() ;
  // Poinché l'asse utensile è parallelo all'asse Z, definisco un sistema di
  // riferimento ad hoc in cui le normali agli archi giacciano nel piano XZ.
   Frame3d frNormFrame ;
   frNormFrame.Set( ORIG, X_AX, -Z_AX, Y_AX) ;
  // Ciclo sulle curve del profilo
   const CurveComposite& ToolProfile = CurrTool.GetApproxOutline() ;
   int i = - 1 ;
   const ICurve* pPrevCurve = nullptr ;
   const ICurve* pCurve = ToolProfile.GetCurve( ++ i) ;
   while ( pCurve != nullptr) {
   
      double dHeight = 0 ;

     // Se segmento
      if ( pCurve->GetType() == CRV_LINE) {
        // Recupero gli estremi
         const ICurveLine* pLine = GetCurveLine( pCurve) ;
         Point3d ptStart = pLine->GetStart() ;
         Point3d ptEnd = pLine->GetEnd() ;
         int nNormNum = pLine->GetTempProp() ;
         Vector3d vtNormSt, vtNormEn ;
         if ( nNormNum != 0) {
            vtNormSt = vArcNorm[nNormNum - 1] ;
            vtNormEn = vArcNorm[nNormNum] ;
            vtNormSt.ToLoc( frNormFrame) ;
            vtNormEn.ToLoc( frNormFrame) ;
         }
        // Ne determino l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
         if ( dHeight > EPS_SMALL) {
           // verifiche curva precedente per eventuale tappo sopra
            bool bTapT = true ;
            if ( pPrevCurve != nullptr  &&  pPrevCurve->GetType() == CRV_LINE) {
               const ICurveLine* pOthLine = GetCurveLine( pPrevCurve) ;
               Point3d ptOthStart = pOthLine->GetStart() ;
               Point3d ptOthEnd = pOthLine->GetEnd() ;  
               if ( abs( ptOthStart.y - ptOthEnd.y) < EPS_SMALL  &&  ptOthStart.x < ptOthEnd.x)
                  bTapT = false ;
            }
           // verifiche curva successiva per eventuale tappo sotto
            bool bTapB = true ;
            const ICurve* pNextCurve = ToolProfile.GetCurve( ++ i) ;
            if ( pNextCurve != nullptr  &&  pNextCurve->GetType() == CRV_LINE) {
               const ICurveLine* pOthLine = GetCurveLine( pNextCurve) ;
               Point3d ptOthStart = pOthLine->GetStart() ;
               Point3d ptOthEnd = pOthLine->GetEnd() ;  
               if ( abs( ptOthStart.y - ptOthEnd.y) < EPS_SMALL  &&  ptOthStart.x > ptOthEnd.x)
                  bTapB = false ;
            }
           // Se X costante, è un cilindro
            if ( abs( ptStart.x - ptEnd.x) < EPS_SMALL) {
               double dRadius = ptStart.x ;
               if ( dRadius > 10 * EPS_SMALL)
                  CompCyl_Milling( nGrid, ptI, ptF, vtToolDir, dHeight, dRadius, bTapB, bTapT, CurrTool.GetToolNum()) ;
            }
           // se altrimenti X decrescente, è un cono con vettore equiverso a quello dell'utensile
            else if ( ptStart.x > ptEnd.x) {
               double dMaxRad = ptStart.x ;
               double dMinRad = ptEnd.x ;
               CompConus_Milling( nGrid, ptI, ptF, vtToolDir, dHeight, dMaxRad, dMinRad,
                                  bTapB, bTapT, vtNormSt, vtNormEn, CurrTool.GetToolNum()) ;
            }
           // altrimenti X crescente, è un cono con vettore opposto a quello dell'utensile
            else {
               double dMaxRad = ptEnd.x ; 
               double dMinRad = ptStart.x ;
               Point3d ptIn = ptI - vtToolDir * dHeight ;
               Point3d ptFn = ptIn + vtMove ;
               vtNormEn.z = -vtNormEn.z ;
               vtNormSt.z = -vtNormSt.z ;
               CompConus_Milling( nGrid, ptIn, ptFn, - vtToolDir, dHeight, dMaxRad, dMinRad,
                                  bTapT, bTapB, vtNormEn, vtNormSt, CurrTool.GetToolNum()) ;
            }  
           // Passo alla curva successiva
            pPrevCurve = pCurve ;
            pCurve = pNextCurve ;
         }
         else {
           // Passo alla curva successiva
            pPrevCurve = pCurve ;
            pCurve = ToolProfile.GetCurve( ++ i) ;
         }
      }

     // Se arco
      else if ( pCurve->GetType() == CRV_ARC) { 
        // Recupero estremi, centro e raggio
         const ICurveArc* pArc = GetCurveArc( pCurve) ;
         Point3d ptStart ; pArc->GetStartPoint( ptStart) ;
         Point3d ptEnd ; pArc->GetEndPoint( ptEnd) ;
         Point3d ptCen = pArc->GetCenter() ;
         double dRadius = pArc->GetRadius() ;
        // Determino le posizioni iniziale e finale del centro della sfera
         Point3d ptCenS = ptI - vtToolDir * ( ptStart.y - ptCen.y) ;
         Point3d ptCenE = ptCenS + vtMove ;
        // Eseguo l'asportazione del materiale
         CompBall_Milling( nGrid, ptCenS, ptCenE, dRadius, CurrTool.GetToolNum()) ;
        // aggiorno l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
        // Passo alla curva successiva
         pPrevCurve = pCurve ;
         pCurve = ToolProfile.GetCurve( ++ i) ;
      } 

     // Determino le posizioni iniziale e finale del componente successivo
      ptI = ptI - vtToolDir * dHeight ;
      ptF = ptI + vtMove ;
   }

   return true ;
}

// ------------------------- SOLIDI ELEMENTARI -----------------------------------------------------------------------------
// Asse di simmetria diretto come l'asse Z: FORATURA 

//----------------------------------------------------------------------------     
bool
VolZmap::CompCyl_ZDrilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, double dHei, double dRad, int nToolNum) 
{
  // Verifica sull'interferenza con lo Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dRad, dRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Proiezione dei punti sul piano
   Point3d ptSxy( ptS.x, ptS.y, 0) ;

  // Parametri geometrici dell'utensile
   double dSafeSqRad = dRad * dRad - 2 * dRad * EPS_SMALL ;

  // Punte del gambo
   Point3d ptTStemS = ptS - vtToolDir * dHei ;
   Point3d ptTStemE = ptE - vtToolDir * dHei ;

  // Quote estreme del gambo
   double dMinStemZ = min( min( ptS.z, ptTStemS.z), min( ptE.z, ptTStemE.z)) ;
   double dMaxStemZ = max( max( ptS.z, ptTStemS.z), max( ptE.z, ptTStemE.z)) ;

  // Ciclo sui punti
   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
      
         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;
         Vector3d vtC = ptC - ptSxy ;

         double dSqLen = vtC.SqLen() ;

        // Se il punto si trova dentro il cerchio taglio
         if ( dSqLen < dSafeSqRad)
            SubtractIntervals( nGrid, i, j, dMinStemZ, dMaxStemZ, Z_AX, -Z_AX, nToolNum) ;
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CompConus_ZDrilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir,
                              double dHei, double dMaxRad, double dMinRad,
                              const Vector3d& vtArcNormMaxR, const Vector3d& vtArcNormMinR, int nToolNum)
{
   // i vettori vtArcNormMaxR e vtArcNormMinR servono nel caso in cui un tratto del tool sia identificato da un arco, ma si decida di approssimarlo con un cono
   // in quel caso per il calcolo corretto della normale viene fatta una somma pesata tra le normali alla superficie nei punti estremi dell'arco
   // i pesi sono riferiti alla posizione relativa dell'intersezione spillone-superficie e questi due punti estremi

  // Verifica sull'interferenza con lo Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dMaxRad, dMinRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

   Point3d ptO( ptS.x, ptS.y, 0) ;

   double dZMin, dZMax ;
   double dAngC = dHei / ( dMaxRad - dMinRad) ; 
   double dSqMinRad = dMinRad * dMinRad ;
   double dSqMaxRad = dMaxRad * dMaxRad ;
   double dSafeSqMaxRad = dSqMaxRad - 2 * dMaxRad * EPS_SMALL ; // Questa variabile è sperimentale: serve per evitare il taglio di un dexel dalla parte cilindrica del volume spazzato dalla traslazione del cono.
   double dDeltaR = dMaxRad - dMinRad ;                         // Per tornare alla versione precedente basta sostituire dSafeSqMaxRad con dSqMaxRad. Per risolvere il problema in modo forse più sicuro, ma  
                                                                // computazionalmente più pesante è sottrarre prima il cilindro con dSafeSqMaxRad e dopo il cono con dSqMaxRad.
  // Studio delle simmetrie
   if ( vtToolDir.z > 0) {
      dZMin = ( ptS.z < ptE.z ? ptS.z - dHei : ptE.z - dHei) ;
      dZMax = ( ptS.z < ptE.z ? ptE.z : ptS.z) ;
   }

   else {
      dZMin = ( ptS.z < ptE.z ? ptS.z : ptE.z) ;
      dZMax = ( ptS.z < ptE.z ? ptE.z + dHei : ptS.z + dHei) ;
   }

   double dL = dMaxRad * dAngC ;

   Point3d ptV = ( vtToolDir * ( ptE - ptS) < 0 ? ptE : ptS) - vtToolDir * dL ;

   double dMin, dMax ;
   Vector3d vtMin, vtMax ;

  // Ciclo sui punti
   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
      
         double dX = ( i + 0.5) * m_dStep ;  double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;         Vector3d vtC = ptC - ptO ;

         double dSqDist = vtC * vtC ;

         if ( dSqDist < dSqMinRad)  {
            SubtractIntervals( nGrid, i, j, dZMin, dZMax, Z_AX, -Z_AX, nToolNum) ;
         }

         else if ( dSqDist < dSafeSqMaxRad) {             // dSafeSqMaxRad è sperimentale 

            double dr = sqrt( dSqDist) ;

            if ( vtToolDir.z > 0) { 
               dMin = dZMin + dAngC * ( dr - dMinRad) ;
               dMax = dZMax ;

               vtMax = - Z_AX ;

               Point3d ptInt( dX, dY, dMin) ;

               Vector3d vtU = ( ptInt - ptV) - ( ptInt - ptV) * vtToolDir * vtToolDir ;
               vtU.Normalize() ;

               if ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall()) {
                  vtMin = dDeltaR * vtToolDir - dHei * vtU ;
                  vtMin.Normalize() ;
               }
               else {
                  Vector3d vtOriginalN = ( ( dDeltaR - dr + dMinRad) / dDeltaR) * vtArcNormMinR + ( ( dr - dMinRad) / dDeltaR) * vtArcNormMaxR ;
                  vtOriginalN.Normalize() ;
                  vtMin = - vtOriginalN.z * vtToolDir - vtOriginalN.x * vtU ;
                  vtMin.Normalize() ;
               }
               
               SubtractIntervals( nGrid, i, j, dMin, dMax, vtMin, vtMax, nToolNum) ;
            }

            else {
               dMin = dZMin ;
               dMax = dZMax - dAngC * ( dr - dMinRad) ;

               vtMin = Z_AX ;

               Point3d ptInt( dX, dY, dMax) ;

               Vector3d vtU = ( ptInt - ptV) - ( ptInt - ptV) * vtToolDir * vtToolDir ;
               vtU.Normalize()  ;

               if ( vtArcNormMinR.IsSmall()  ||  vtArcNormMaxR.IsSmall()) {
                  vtMax = dDeltaR * vtToolDir - dHei * vtU ;
                  vtMax.Normalize() ;
               }
               else {
                  Vector3d vtOriginalN = ( ( dDeltaR - dr + dMinRad) / dDeltaR) * vtArcNormMinR + ( ( dr - dMinRad) / dDeltaR) * vtArcNormMaxR ;
                  vtOriginalN.Normalize() ;
                  vtMax = - vtOriginalN.z * vtToolDir - vtOriginalN.x * vtU ;
                  vtMax.Normalize() ;
               }

               SubtractIntervals( nGrid, i, j, dMin, dMax, vtMin, vtMax, nToolNum) ;
            }
         }
      }
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CompPar_ZDrilling( int nGrid, double dLenX, double dLenY, double dLenZ,
                            const Point3d& ptS, const Point3d& ptE,
                            const Vector3d& vtToolDir, const Vector3d& vtAux, int nToolNum)
{
   Point3d ptMyS = ptS - EPS_SMALL * vtToolDir ;
   Point3d ptMyE = ptE - EPS_SMALL * vtToolDir ;

   dLenX -= ( 2 * EPS_SMALL) ;
   dLenY -= ( 2 * EPS_SMALL) ;
   dLenZ -= ( 2 * EPS_SMALL) ;

  // Controllo sull'interferenza utensile-solido
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestParaBBox( nGrid, ptMyS, ptMyE, vtToolDir, vtAux, dLenX, dLenY, dLenZ, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Costruisco un sistema di riferimento nel piano
   Point3d ptOXY( ptMyS.x, ptMyS.y, 0) ;
   Vector3d vtV1 = vtToolDir ^ vtAux ;
   Vector3d vtV2 = vtAux ;

  // Quote estreme del volume asportato
   double dMinZ = min( min( ptMyS.z, ptMyS.z - vtToolDir.z * dLenZ), min( ptMyE.z, ptMyE.z - vtToolDir.z * dLenZ)) ;
   double dMaxZ = max( max( ptMyS.z, ptMyS.z - vtToolDir.z * dLenZ), max( ptMyE.z, ptMyE.z - vtToolDir.z * dLenZ)) ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
      
         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;
         Vector3d vtR = ptC - ptOXY ;

         double dR1 = vtR * vtV1 ;
         double dR2 = vtR * vtV2 ;
         
         if ( abs( dR1) < 0.5 * dLenX  &&  abs( dR2) < 0.5 * dLenY) 
            SubtractIntervals( nGrid, i, j, dMinZ, dMaxZ, Z_AX, - Z_AX, nToolNum) ;
      }
   }

   return true ;
}

// Asse di simmetria diretto come l'asse Z: FRESATURA

//----------------------------------------------------------------------------
bool
VolZmap::CompCyl_ZMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir,
                           double dHei, double dRad, int nToolNum) 
{
  // Verifica sull'interferenza con lo Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dRad, dRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Parametri geometrici 
   double dSqRad = dRad * dRad ;

  // Studio delle simmetrie
   Point3d ptI = ( ptS.z < ptE.z ? ptS : ptE) ;
   Point3d ptF = ( ptS.z < ptE.z ? ptE : ptS) ;
   Point3d ptIT = ptI - vtToolDir * dHei ;
   Point3d ptFT = ptF - vtToolDir * dHei ;
   Point3d ptIxy( ptI.x, ptI.y, 0) ;

   //Point3d ptIUp( ptI.x, ptI.y, max( ptI.z, ptIT.z)) ;
   //Point3d ptIDw( ptI.x, ptI.y, min( ptI.z, ptIT.z)) ;
  
  // Quote iniziali e finali massime e 
  // minime del gambo dell'utensile e DeltaZ 
   double dZMaxI = max( ptI.z, ptIT.z) ;
   double dZMaxF = max( ptF.z, ptFT.z) ;
   double dZMinI = dZMaxI - dHei ;
   double dDeltaZ = dZMaxF - dZMaxI ;

  // Vettori caratterizzanti il moto 
   Vector3d vtMove = ptF - ptI ;
   Vector3d vtMoveXY( vtMove.x, vtMove.y, 0) ;
   double dLenXY = vtMoveXY.LenXY() ;
   vtMove.Normalize() ;

   double dSafeRad = dRad - EPS_SMALL ;

  // Definizione di un sistema di riferimento ad hoc
   Vector3d vtV1, vtV2 ;

  // Se la lunghezza è troppo piccola lo allungo
   if ( dLenXY < EPS_SMALL) 
      vtV1 = ( 1 / dLenXY) * vtMoveXY ;
   else 
      vtV1 = vtMoveXY ;

  // Normalizzo vtV1
   vtV1.Normalize() ;
  // Definisco vtV2
   vtV2 = vtV1 ;  
   vtV2.Rotate( Z_AX, 0, 1) ;

   double dMin, dMax ;
   Vector3d vtMin, vtMax ;

   // calcolo il box del volume spazzato
   BBox3d bbVol = GetCylMoveBBox(ptS, ptE, vtToolDir, dRad, dHei) ;
   INTDBLVECTOR vIntersDash ;
   for ( int i = nStartI ; i <= nEndI ; ++i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++j) {

         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;
         Vector3d vtC = ptC - ptIxy ;

         // calcolo l'intersezione solo se ho un tratto sullo spillone che interseca il volume spazzato dal tool
         int nPos = j * m_nNx[nGrid] + i;
         vector<Data>& vDexel = m_Values[nGrid][nPos];
         DBLDBLVECTOR vInterv ;
         for (int k = 0; k < int ( vDexel.size () ); ++k)
            vInterv.emplace_back ( vDexel[k].dMin, vDexel[k].dMax ) ;

         bool bIntersVol = false ;
         if ( vDexel.size () != 0) {
            for (int k = 0; k < int ( vInterv.size () ) && !bIntersVol; ++k) {
               IntersLineBox ( ptC + Z_AX * vInterv[k].first, ptC + Z_AX * vInterv[k].second, bbVol, vIntersDash, true ) ;
               bIntersVol = vIntersDash.size () > 0 ;
            }
            if ( bIntersVol) {
               double dX1 = vtC * vtV1 ;
               double dX2 = vtC * vtV2 ;

               //Point3d ptInt ;

              // Se il punto appartiene alla proiezione del volume spazzato valuto massimo e minimo
               if ( ( dX1 > 0 && dX1 < dLenXY && abs( dX2) < dSafeRad)    ||
                    ( dX1 - dLenXY) * ( dX1 - dLenXY) + dX2 * dX2 < dSqRad || 
                        dX1 * dX1 + dX2 * dX2 < dSqRad) {

                  double dX1_0 = sqrt( dSqRad - dX2 * dX2) ;
                  // Massimo
                  if ( ( dX1 - dLenXY) * ( dX1 - dLenXY) + dX2 * dX2 < dSqRad) {
                     dMax = dZMaxF ;
                     vtMax = - Z_AX ;
                  }

                  else {
                     dMax = dZMaxI + dDeltaZ * ( dX1 + dX1_0) / dLenXY ;
                     if ( abs( vtMove * vtToolDir) < EPS_SMALL) {
                        vtMax = - Z_AX ;
                     }
                     else {
                        Vector3d vtCirc = dX1_0 * vtV1 - dX2 * vtV2 ;
                        Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                        Vector3d vtCross = vtTan ^ vtMove ;
                        vtMax = ( vtCross * vtCirc > 0 ? vtCross : - vtCross) ;
                        vtMax.Normalize() ;
                     }
                  }
                  // Minimo
                  if ( dX1 * dX1 + dX2 * dX2 < dSqRad) {
                     dMin = dZMinI ;
                     vtMin = Z_AX ;
                  }
                  else {
                        dMin = dZMinI + dDeltaZ * ( dX1 - dX1_0) / dLenXY ;
                        if ( abs( vtMove * vtToolDir) < EPS_SMALL) {
                        vtMin = Z_AX ;
                     }
                     else {
                        Vector3d vtCirc = - dX1_0 * vtV1 - dX2 * vtV2 ;
                        Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                        Vector3d vtCross = vtTan ^ vtMove ;
                        vtMin = (vtCross * vtCirc > 0 ? vtCross : -vtCross) ;
                        vtMin.Normalize () ;
                     }
                  }
                  SubtractIntervals ( nGrid, i, j, dMin, dMax, vtMin, vtMax, nToolNum) ;
               }
            }
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CompConus_ZMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir,
                             double dHei, double dMaxRad, double dMinRad,
                             const Vector3d& vtArcNormMaxR, const Vector3d& vtArcNormMinR, int nToolNum)
{
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dMaxRad, dMinRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

   Point3d ptI = ( vtToolDir * ( ptE - ptS) > 0 ? ptS : ptE) ;
   Point3d ptF = ( vtToolDir * ( ptE - ptS) > 0 ? ptE : ptS) ;

   Point3d ptIxy( ptI.x, ptI.y, 0) ;
   Point3d ptFxy( ptF.x, ptF.y, 0) ;

   Vector3d vtMove = ptF - ptI ;
   Vector3d vtMLong = ( vtMove * vtToolDir) * vtToolDir ;
   Vector3d vtMOrt = vtMove - vtMLong ;  double dLOrt = vtMOrt.Len() ;

   Vector3d vtV1 = vtToolDir ;  
   Vector3d vtV2 = vtMOrt ;  vtV2.Normalize() ;
   Vector3d vtV3 = vtV1 ^ vtV2 ;

   double dZI = ptI.z ;
   double dZTI = ptI.z - vtV1.z * dHei ;
   double dDeltaZ = ptF.z - ptI.z ;
   double dDeltaR = dMaxRad - dMinRad ;

   double dTan = dDeltaR / dHei ;
   double dRatio = ( vtMove * vtV1) / ( vtMove * vtV2) ;

   bool bCase = ( dRatio * dTan > 1) ;

   double dCos = dTan * dRatio ;
   double dSin = ( 1 - dCos * dCos > 0 ? sqrt( 1 - dCos * dCos) : 0) ;

   double dDen = sqrt( 1 + dTan * dTan) ;
    
   Point3d ptV = ptI - vtV1 * ( dHei * dMaxRad / dDeltaR) ;
   Point3d ptVF = ptV + vtMove ;

   Vector3d vtNs = - ( dTan / dDen) * vtV1 + ( dCos / dDen) * vtV2 + ( dSin / dDen) * vtV3 ;
   Vector3d vtNd = - ( dTan / dDen) * vtV1 + ( dCos / dDen) * vtV2 - ( dSin / dDen) * vtV3 ;
   Vector3d vtR0 = ptV - ORIG ;

   vtNs.Normalize() ;
   vtNd.Normalize() ;

   double dDots = vtR0 * vtNs ;
   double dDotd = vtR0 * vtNd ;

   double dMin = 0, dMax = 0, dPLim = 0, dMLim = 0 ;
   Vector3d vtMin, vtMax, vtP, vtM ;

   Vector3d vtUmv = vtMove ;
   vtUmv.Normalize() ;

   Point3d ptInt ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {

      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
      
         double dX = ( i + 0.5) * m_dStep ;  double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;

         Vector3d vtCI = ptC - ptIxy ;  double dSqDI = vtCI.SqLenXY() ;
         Vector3d vtCF = ptC - ptFxy ;  double dSqDF = vtCF.SqLenXY() ;
         
         double dIDO = vtCI * vtV3 ;
         double dIDL = vtCI * vtV2 ;
         double dIVarCos = dIDL / sqrt( dSqDI) ;

         double dFDL = vtCF * vtV2 ;
         double dFVarCos = dFDL / sqrt( dSqDF) ;

         vtCI.Normalize() ;
         vtCF.Normalize() ;

         if ( dSqDI < dMaxRad * dMaxRad  ||  dSqDF < dMaxRad * dMaxRad  || 
              ( abs( dIDO) < dMaxRad  &&  dIDL > 0  &&  dIDL < dLOrt)) {

           // Caso dTan * dRatio > 1
            if ( bCase) {
              // Limiti nella direzione positiva di vtV1 
               if ( dSqDF < dMaxRad * dMaxRad) {
                  dPLim = dZI + dDeltaZ ;
                  vtP = - vtV1 ;
               }

               else { 
                  double dIDL_0 = - sqrt( dMaxRad * dMaxRad - dIDO * dIDO) ;
                  dPLim = dZI + ( dIDL - dIDL_0) * dDeltaZ / dLOrt ;
                  if ( abs( vtV1 * vtUmv) < EPS_SMALL) {
                     vtP = - vtV1 ;
                  }
                  else {
                     Vector3d vtCirc = - dIDL_0 * vtV2 - dIDO * vtV3 ;
                     Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                     Vector3d vtCross = vtTan ^ vtUmv ;
                     vtP = ( vtCross * vtCirc > 0 ? vtCross : - vtCross) ;
                     vtP.Normalize() ;
                  }
               }

              // Limiti nella direzione negativa di vtV1
               if ( dSqDI < dMinRad * dMinRad) {
                  dMLim = dZTI ;
                  vtM = vtToolDir ;
               }

               else if ( dSqDI < dMaxRad * dMaxRad) { 
                  dMLim = dZTI + ( sqrt( dSqDI) - dMinRad) * ( dZI - dZTI) / dDeltaR ;
                  ptInt.Set( dX, dY, dMLim) ;
                  Vector3d vtU = ( ptInt - ptV) - ( ptInt - ptV) * vtToolDir * vtToolDir ;
                  vtU.Normalize() ;
                  if ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall()) {
                     vtM = dDeltaR * vtToolDir - dHei * vtU ;
                     vtM.Normalize() ;
                  }
                  else {
                     Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtCI - vtArcNormMaxR.z * vtV1 ;
                     Vector3d vtOrigMinR = - vtArcNormMinR.x * vtCI - vtArcNormMinR.z * vtV1 ;
                     vtOrigMaxR.Normalize() ;
                     vtOrigMinR.Normalize() ;
                     vtM = ( ( dDeltaR - sqrt( dSqDI) + dMinRad) / dDeltaR) * vtOrigMinR + ( ( sqrt(dSqDI) - dMinRad) / dDeltaR) * vtOrigMaxR ;
                     vtM.Normalize() ;
                  }          
               }

               else {
                  double dIDL_0 = sqrt( dMaxRad * dMaxRad - dIDO * dIDO) ;
                  dMLim = dZI + ( dIDL - dIDL_0) * dDeltaZ / dLOrt ;
                  if ( abs( vtUmv * vtV1) < EPS_SMALL) {
                     vtM = vtV1 ;
                  }
                  else {
                     Vector3d vtCirc = - dIDL_0 * vtV2 - dIDO * vtV3 ;
                     Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                     Vector3d vtCross = vtTan ^ vtUmv ;
                     vtM = ( vtCross * vtCirc > 0 ? vtCross : - vtCross) ;
                     vtM.Normalize() ;
                  }
               }
            }

            else {
              // Limiti nella direzione positiva di vtV1 
               if ( dSqDF < dMaxRad * dMaxRad) { 
                  dPLim = dZI + dDeltaZ ;
                  vtP = - vtV1 ;
               }

               else {
                  double dIDL_0 = - sqrt( dMaxRad * dMaxRad - dIDO * dIDO) ;
                  dPLim = dZI + ( dIDL - dIDL_0) * dDeltaZ / dLOrt ; 
                  if ( abs( vtUmv * vtToolDir) < EPS_SMALL) {
                     vtP = - vtV1 ;
                  }
                  else {
                     Vector3d vtCirc = - dIDL_0 * vtV2 - dIDO * vtV3 ;
                     Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                     Vector3d vtCross = vtTan ^ vtUmv ;
                     vtP = ( vtCross * vtCirc > 0 ? vtCross : - vtCross) ; // vtCross * vtCirc o vtCross * vtMove?
                     vtP.Normalize() ;
                  }
               }

              // Limiti nella direzione negativa di vtV1
               if ( dSqDI < dMinRad * dMinRad) {
                  dMLim = dZTI ;
                  vtM = vtV1 ;
               }

               else if ( dSqDI >= dMinRad * dMinRad && dSqDI < dMaxRad * dMaxRad && dIVarCos < dCos) { 
                  dMLim = dZTI + ( sqrt( dSqDI) - dMinRad) * ( dZI - dZTI) / dDeltaR ;
                  ptInt.Set( dX, dY, dMLim) ;
                  Vector3d vtU = ( ptInt - ptV) - ( ptInt - ptV) * vtToolDir * vtToolDir ;
                  vtU.Normalize() ;
                  if ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall()) {
                     vtM = dDeltaR * vtToolDir - dHei * vtU ;
                     vtM.Normalize() ;
                  }
                  else {
                     Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtCI - vtArcNormMaxR.z * vtV1 ;
                     Vector3d vtOrigMinR = - vtArcNormMinR.x * vtCI - vtArcNormMinR.z * vtV1 ;
                     vtOrigMaxR.Normalize() ;
                     vtOrigMinR.Normalize() ;
                     vtM = ( ( dDeltaR - sqrt( dSqDI) + dMinRad) / dDeltaR) * vtOrigMinR + ( ( sqrt( dSqDI) - dMinRad) / dDeltaR) * vtOrigMaxR ;
                     vtM.Normalize() ;
                  }
               }

               else if ( dSqDI >= dMinRad * dMinRad && dIVarCos >= dCos && dFVarCos < dCos && abs( dIDO) < dMaxRad * dSin) {

                  if ( dIDO > - dMaxRad * dSin && dIDO <= - dMinRad * dSin) { 
                     dMLim = ( dDotd - dX * vtNd.x - dY * vtNd.y) / vtNd.z ; 
                     if ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall()) {
                        vtM = - vtNd ;
                     }
                     else {
                        double dLatMin = dMinRad * dSin ;
                        double dDeltaLat = dDeltaR * dSin ;
                        Vector3d vtRadial = dCos * vtV2 - dSin * vtV3 ;
                        vtRadial.Normalize() ;
                        Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtRadial - vtArcNormMaxR.z * vtV1 ;
                        Vector3d vtOrigMinR = - vtArcNormMinR.x * vtRadial - vtArcNormMinR.z * vtV1 ;
                        vtOrigMaxR.Normalize() ;
                        vtOrigMinR.Normalize() ;                    
                        vtM = ( ( dDeltaLat - abs( dIDO) + dLatMin) / dDeltaLat) * vtOrigMinR + ( ( abs( dIDO) - dLatMin) / dDeltaLat) * vtOrigMaxR ;
                        vtM.Normalize() ;
                     }
                  }

                  else if ( dIDO > - dMinRad * dSin && dIDO < dMinRad * dSin) {
                     double dIDL_0 = sqrt( dMinRad * dMinRad - dIDO * dIDO) ;
                     dMLim = dZTI + ( dIDL - dIDL_0) * dDeltaZ / dLOrt ;
                     if ( abs( vtUmv * vtV1) < EPS_SMALL) {
                        vtM = vtV1 ;
                     }
                     else {
                        Vector3d vtCirc = - dIDL_0 * vtV2 - dIDO * vtV3 ;
                        Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                        Vector3d vtCross = vtTan ^ vtUmv ;
                        double dDotCrossCirc = vtCross * vtCirc ;
                        vtM = ( dDotCrossCirc > 0 ? vtCross : - vtCross) ;
                        vtM.Normalize() ;
                     }
                  }

                  else if ( dIDO >= dMinRad * dSin && dIDO < dMaxRad * dSin) {
                     dMLim = ( dDots - dX * vtNs.x - dY * vtNs.y) / vtNs.z ;
                     if ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall()) {
                        vtM = - vtNs ;
                     }
                     else {
                        double dLatMin = dMinRad * dSin ;
                        double dDeltaLat = dDeltaR * dSin ;
                        Vector3d vtRadial = dCos * vtV2 + dSin * vtV3 ;
                        vtRadial.Normalize() ;
                        Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtRadial - vtArcNormMaxR.z * vtV1 ;
                        Vector3d vtOrigMinR = - vtArcNormMinR.x * vtRadial - vtArcNormMinR.z * vtV1 ;
                        vtOrigMaxR.Normalize() ;
                        vtOrigMinR.Normalize() ;
                        vtM = ( ( dDeltaLat -  dIDO + dLatMin) / dDeltaLat) * vtOrigMinR + ( ( dIDO - dLatMin) / dDeltaLat) * vtOrigMaxR ;                       
                        vtM.Normalize() ;
                     }
                  }
               }

               else if ( dFVarCos >= dCos) {
            
                  if ( dSqDF < dMinRad * dMinRad) { 

                     double dIDL_0 = sqrt( dMinRad * dMinRad - dIDO * dIDO) ;

                     dMLim = dZTI + ( dIDL - dIDL_0) * dDeltaZ / dLOrt ;

                     if ( abs( vtUmv * vtV1) < EPS_SMALL) {
                        vtM = vtV1 ;
                     }
                     else {
                        Vector3d vtCirc = - dIDL_0 * vtV2 - dIDO * vtV3 ;
                        Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                        Vector3d vtCross = vtTan ^ vtUmv ;
                        vtM = ( vtCross * vtCirc > 0 ? vtCross : - vtCross) ;
                        vtM.Normalize() ;
                     }
                  }

                  else {
                     dMLim = dZTI + dDeltaZ + ( sqrt( dSqDF) - dMinRad) * ( dZI - dZTI) / dDeltaR ;
                     ptInt.Set( dX, dY, dMLim) ;
                     Vector3d vtU = ( ptInt - ptVF) - ( ptInt - ptVF) * vtToolDir * vtToolDir ;
                     vtU.Normalize() ;
                     if ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall()) {
                        vtM = dDeltaR * vtToolDir - dHei * vtU ;
                        vtM.Normalize() ;
                     }
                     else {
                        Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtCF - vtArcNormMaxR.z * vtV1 ;
                        Vector3d vtOrigMinR = - vtArcNormMinR.x * vtCF - vtArcNormMinR.z * vtV1 ;
                        vtOrigMaxR.Normalize() ;
                        vtOrigMinR.Normalize() ;
                        vtM = ( ( dDeltaR - sqrt( dSqDF) + dMinRad) / dDeltaR) * vtOrigMinR + ( ( sqrt( dSqDF) - dMinRad) / dDeltaR) * vtOrigMaxR ;
                        vtM.Normalize() ;
                     }
                  }
               }

               else { 
                  double dIDL_0 = sqrt( dMaxRad * dMaxRad - dIDO * dIDO) ;
                  dMLim =  dZI + ( dIDL - dIDL_0) * dDeltaZ / dLOrt ;
                  if ( abs( vtUmv * vtV1) < EPS_SMALL) {
                     vtM = vtV1 ;
                  }
                  else {
                     Vector3d vtCirc = - dIDL * vtV2 - dIDO * vtV3 ;
                     Vector3d vtTan( - vtCirc.y, vtCirc.x, 0) ;
                     Vector3d vtCross = vtTan ^ vtMove ;
                     vtM = ( vtCross * vtMove > 0 ? vtCross : - vtCross) ;
                     vtM.Normalize() ;
                  }
               }
            }

            if ( dMLim < dPLim) {
               dMin = dMLim ;
               dMax = dPLim ;
               vtMin = vtM ;
               vtMax = vtP ;
            }

            else {
               dMin = dPLim ;
               dMax = dMLim ;
               vtMin = vtP ;
               vtMax = vtM ;
            }
            
            SubtractIntervals( nGrid, i, j, dMin, dMax, vtMin, vtMax, nToolNum) ;
         }
      }
   }
   return true ;
} 

//----------------------------------------------------------------------------
bool //  E' in realtà  MillingPerp
VolZmap::CompPar_ZMilling( int nGrid, double dLenX, double dLenY, double dLenZ,
                           const Point3d& ptS, const Point3d& ptE,
                           const Vector3d& vtToolDir, const Vector3d& vtAux, int nToolNum)
{  
   Point3d ptMyS = ptS - EPS_SMALL * vtToolDir ;
   Point3d ptMyE = ptE - EPS_SMALL * vtToolDir ;

   dLenX -= ( 2 * EPS_SMALL) ;
   dLenY -= ( 2 * EPS_SMALL) ;
   dLenZ -= ( 2 * EPS_SMALL) ;

  // Controllo sull'interferenza utensile-solido
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestParaBBox( nGrid, ptMyS, ptMyE, vtToolDir, vtAux, dLenX, dLenY, dLenZ, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Quote estreme Z 
   double dMinZ = min( min( ptMyS.z, ptMyS.z - vtToolDir.z * dLenZ), min( ptMyE.z, ptMyE.z - vtToolDir.z * dLenZ)) ;
   double dMaxZ = max( max( ptMyS.z, ptMyS.z - vtToolDir.z * dLenZ), max( ptMyE.z, ptMyE.z - vtToolDir.z * dLenZ)) ;

  // Vettore di movimento
   Vector3d vtMove = ptMyE - ptMyS ;

  // Sistemi di riferimento del solido nella posizione iniziale e finale
   Vector3d vtV2 = vtAux ; 
   Vector3d vtV1 = vtV2 ^ vtToolDir ;
   vtV1.Normalize() ;
   Point3d ptSXY( ptMyS.x, ptMyS.y, 0) ;
   Point3d ptEXY( ptMyE.x, ptMyE.y, 0) ;
  
  // Studio del volume asportato durante il moto
   Frame3d MotionFrame ;
   Vector3d vtDiagA = dLenX * vtV1 + dLenY * vtV2 ;
   Vector3d vtDiagB = dLenX * vtV1 - dLenY * vtV2 ;
   Vector3d vtW1 = ( abs( vtDiagA * vtMove) <= abs( vtDiagB * vtMove) ? vtDiagA : vtDiagB) ;
   Point3d ptOrigXY = ptSXY - vtW1 / 2 ;
   double dLenW1 = vtW1.Len() ;
   vtW1 /= dLenW1 ;
   double dDeltaW1 = vtMove * vtW1 ;
   Vector3d vtW2 = vtMove - dDeltaW1 * vtW1 ;
   double dLenW2 = vtW2.Len() ;
   vtW2 /= dLenW2 ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
        
         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;
         Vector3d vtRS = ptC - ptSXY ;
         Vector3d vtRE = ptC - ptEXY ;

         double dRS1 = vtRS * vtV1 ;
         double dRS2 = vtRS * vtV2 ;

         double dRE1 = vtRE * vtV1 ;
         double dRE2 = vtRE * vtV2 ;
       
        // Asportazione materiale nella posizione iniziale
         if ( abs( dRS1) < 0.5 * dLenX  &&  abs( dRS2) < 0.5 * dLenY)
            SubtractIntervals( nGrid, i, j, dMinZ, dMaxZ, Z_AX, - Z_AX, nToolNum) ;

        // Asportazione materiale nella posizione finale
         if ( abs( dRE1) < 0.5 * dLenX  &&  abs( dRE2) < 0.5 * dLenY)
            SubtractIntervals( nGrid, i, j, dMinZ, dMaxZ, Z_AX, - Z_AX, nToolNum) ;

        // Asportazione materiale nel moto
         Vector3d vtR = ptC - ptOrigXY ;
         double dR1 = vtR * vtW1 ;
         double dR2 = vtR * vtW2 ;
         if ( dR2 > 0  &&  dR2 < dLenW2  && 
              dR1 * dLenW2 > dDeltaW1 * dR2  && 
              dR1 * dLenW2 < dLenW1 * dLenW2 + dDeltaW1 * dR2)
            SubtractIntervals( nGrid, i, j, dMinZ, dMaxZ, Z_AX, - Z_AX, nToolNum) ;
      }
   }
   return true ;
}

// Asse di simmetria con orientazione generica: FORATURA
//----------------------------------------------------------------------------
bool 
VolZmap::CompCyl_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir,
                           double dHei, double dRad, bool bTapB, bool bTapT, int nToolNum)
{
  // Verifico che il cilindro con il suo movimento intersechi la griglia
   int nStartI, nEndI, nStartJ, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dRad, dRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Studio delle simmetrie
   Point3d ptI = ( ( ptE - ptS) * vtToolDir > 0 ? ptE : ptS) ;
   Point3d ptF = ( ( ptE - ptS) * vtToolDir > 0 ? ptS - vtToolDir * dHei : ptE - vtToolDir * dHei) ;

  // Altezza cilindro totale altezza + moto
   double dH = ( ptF - ptI).Len() ;

  // Sistema di riferimento del cilindro
   Frame3d CylFrame ; CylFrame.Set( ptF, vtToolDir) ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
         Point3d ptC( ( i + 0.5) * m_dStep, ( j + 0.5) * m_dStep, 0) ;
         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;
         if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dH, dRad, bTapB, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool 
VolZmap::CompConus_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, 
                             double dHei, double dMaxRad, double dMinRad, bool bTapB, bool bTapT,
                             const Vector3d& vtArcNormMaxR, const Vector3d& vtArcNormMinR, int nToolNum)
{
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dMaxRad, dMinRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Apertura del cono
   double dDeltaR = dMaxRad - dMinRad ;
   double dTan = dDeltaR / dHei ;
   double dConeMaxH = ( ( dMaxRad * dHei) / dDeltaR) ;
   double dConeMinH = dConeMaxH - dHei ;

   Point3d ptVertex = ( vtToolDir * ( ptE - ptS) > 0 ? ptS : ptE) - vtToolDir * dConeMaxH ;

  // Sistemi di riferimento del cono e del cilindro
   Frame3d ConusFrame ; ConusFrame.Set( ptVertex, vtToolDir) ;
   Frame3d CylFrame = ConusFrame ; CylFrame.Translate( vtToolDir * dConeMaxH) ;

  // L'altezza del cilindro è il movimento
   double dH = ( ptE - ptS).Len() ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) { 
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;

         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;

        // Cilindro
         if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dH, dMaxRad, true, bTapT,
                                  ptInt1, vtN1, ptInt2, vtN2)) {
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
         }

        // Cono
         if ( IntersLineConus( ptC, Z_AX, ConusFrame, dTan, dConeMinH, dConeMaxH, bTapB, true,
                               ptInt1, vtN1, ptInt2, vtN2)) {
            if ( ! ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall())) {
               if ( ! AreSameOrOppositeVectorEpsilon(vtN1, vtToolDir, 0.1 * EPS_SMALL)) {
                  Vector3d vtL1 = ptInt1 - ptVertex ;
                  vtL1 -= ( vtL1 * vtToolDir) * vtToolDir ;
                  double dL1 = vtL1.Len() ;
                  vtL1 /= dL1 ;
                  Vector3d vtOriginalN1 = ( ( dDeltaR - dL1 + dMinRad) / dDeltaR) * vtArcNormMinR + ( ( dL1 - dMinRad) / dDeltaR) * vtArcNormMaxR ;
                  vtOriginalN1.Normalize() ;
                  vtN1 = - vtOriginalN1.z * vtToolDir - vtOriginalN1.x * vtL1 ;
               }
               if ( ! AreSameOrOppositeVectorEpsilon( vtN2, vtToolDir, 0.1 * EPS_SMALL)) {
                  Vector3d vtL2 = ptInt2 - ptVertex ;
                  vtL2 -= ( vtL2 * vtToolDir) * vtToolDir ;
                  double dL2 = vtL2.Len() ;
                  vtL2 /= dL2 ;
                  Vector3d vtOriginalN2 = ( ( dDeltaR - dL2 + dMinRad) / dDeltaR) * vtArcNormMinR + ( ( dL2 - dMinRad) / dDeltaR) * vtArcNormMaxR ;
                  vtOriginalN2.Normalize() ;
                  vtN2 = - vtOriginalN2.z * vtToolDir - vtOriginalN2.x * vtL2 ;
               }
            }
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CompPar_Drilling( int nGrid, double dLenX, double dLenY, double dLenZ,
                           const Point3d& ptS, const Point3d& ptE,
                           const Vector3d& vtToolDir, const Vector3d& vtAux, int nToolNum)
{
   Point3d ptMyS = ptS - EPS_SMALL * vtToolDir ;
   Point3d ptMyE = ptE - EPS_SMALL * vtToolDir ;

   dLenX -= ( 2 * EPS_SMALL) ; 
   dLenY -= ( 2 * EPS_SMALL) ; 
   dLenZ -= ( 2 * EPS_SMALL) ;

  // Controllo sull'interferenza utensile-solido
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestParaBBox( nGrid, ptMyS, ptMyE, vtToolDir, vtAux, dLenX, dLenY, dLenZ, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Costruzione di un sistema di riferimento per il volume
  // asportato dal solido nelle posizioni iniziale e finale.
   Vector3d vtV1 = vtToolDir ;
   Vector3d vtV2 = vtAux ^ vtV1 ;
   Vector3d vtV3 = vtAux ;

   double dLenMove = ( ptMyE - ptMyS).Len() ;
   Point3d ptO = ptMyS - ( ( ptMyE - ptMyS) * vtV1 > 0 ? dLenZ : dLenZ + dLenMove) * vtV1 - ( 0.5 * dLenX) * vtV2 ;
   Frame3d ParaFrame ; ParaFrame.Set( ptO, vtV2, vtV3, vtV1) ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
        
         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;

         Point3d ptC( dX, dY, 0) ;

         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;

         if ( IntersLineMyPolyhedron(  ptC, Z_AX, ParaFrame, dLenX, dLenY, dLenZ + dLenMove, 0, ptInt1, vtN1, ptInt2, vtN2)) {
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
         }
      }
   }

   return true ;
}

// Asse di simmetria con orientazione generica: FRESATURA
//----------------------------------------------------------------------------
bool
VolZmap::CompCyl_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE,
                          const Vector3d& vtToolDir, double dHei, double dRad, bool bTapB, bool bTapT, int nToolNum) 
{
  // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dRad, dRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Studio delle simmetrie
   Point3d ptI = ( vtToolDir * ( ptE - ptS) > 0 ? ptS : ptE) ;
   Point3d ptF = ( vtToolDir * ( ptE - ptS) > 0 ? ptE : ptS) ;
   Point3d ptITip = ptI - vtToolDir * dHei ;

  // Definizione terne vettoriali e sistemi di riferimento intrinseci al movimento
   Vector3d vtMove = ptF - ptI ;
   Vector3d vtMoveLong = ( vtMove * vtToolDir) * vtToolDir ;
   Vector3d vtMoveOrt = vtMove - vtMoveLong ;

   Vector3d vtV1 = vtToolDir ;
   Vector3d vtV2 = vtMoveOrt ;  vtV2.Normalize() ;
   Vector3d vtV3 = vtV1 ^ vtV2 ;
   Frame3d CylFrame ;  CylFrame.Set( ptITip, vtV2, vtV3, vtV1) ;
 
  // Parametri geometrici di moto e cilindro
   double dLongLen = vtMoveLong.Len() ;
   double dOrtLen = vtMoveOrt.Len() ;

  // Parametri di contenimento
   Vector3d vtPerp = vtToolDir ^ Z_AX ;
   bool bPerpOk = vtPerp.Normalize() ;
   if ( vtPerp * vtMove < 0)
      vtPerp.Invert() ;
   int nSkip = 0 ;

   // calcolo il box del volume spazzato
   Frame3d frVol ; frVol.Set( ptI, vtToolDir, vtMove) ;
   Point3d ptILoc = ptI ; ptILoc.ToLoc( frVol) ;
   Point3d ptFLoc = ptF ; ptFLoc.ToLoc( frVol) ;
   Vector3d vtToolLoc = vtToolDir ; vtToolLoc.ToLoc( frVol) ;
   BBox3d bbVol = GetCylMoveBBox( ptILoc, ptFLoc, vtToolLoc, dRad, dHei) ;
   INTDBLVECTOR vIntersDash ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         Point3d ptC( ( i + 0.5) * m_dStep, ( j + 0.5) * m_dStep, 0) ;

         // calcolo l'intersezione solo se ho un tratto sullo spillone che interseca il volume spazzato dal tool
         int nPos = j * m_nNx[nGrid] + i;
         vector<Data>& vDexel = m_Values[nGrid][nPos];
         DBLDBLVECTOR vInterv ;
         for ( int k = 0 ; k < int ( vDexel.size ()); ++k)
            vInterv.emplace_back( vDexel[k].dMin, vDexel[k].dMax) ;

         Point3d ptCLoc = ptC ; ptCLoc.ToLoc( frVol) ;
         Vector3d vtZLoc = Z_AX ; vtZLoc.ToLoc( frVol) ;
         bool bIntersVol = false ;
         if ( vDexel.size () != 0) {
            for ( int k = 0 ; k < int ( vInterv.size ())  &&  ! bIntersVol ; ++k) {
               IntersLineBox ( ptCLoc + vtZLoc * vInterv[k].first, ptCLoc + vtZLoc * vInterv[k].second, bbVol, vIntersDash, true) ;
               bIntersVol = vIntersDash.size () > 0 ;
            }
            if ( bIntersVol) {
              // salto il controllo degli spilloni sotto il piano limite in basso o sopra il piano limite in alto
               if ( ( ptC + Z_AX * m_dMinZ[nGrid] - ptITip) * vtToolDir < -EPS_SMALL  &&
                    ( ptC + Z_AX * m_dMaxZ[nGrid] - ptITip) * vtToolDir < -EPS_SMALL) {
                  ++ nSkip ;
                  continue ;
               }
               if ( ( ptC + Z_AX * m_dMinZ[nGrid] - ptI - vtMoveLong) * vtToolDir > EPS_SMALL &&
                    ( ptC + Z_AX * m_dMaxZ[nGrid] - ptI - vtMoveLong) * vtToolDir > EPS_SMALL) {
                  ++ nSkip ;
                  continue ;
               }

              // salto il controllo degli spilloni prima del piano di fianco verticale di inizio o dopo il piano di fianco verticale di fine
               if ( bPerpOk  &&
                    ( ptC + Z_AX * m_dMinZ[nGrid] - ptI + vtPerp * dRad) * vtPerp < -EPS_SMALL  &&
                    ( ptC + Z_AX * m_dMaxZ[nGrid] - ptI + vtPerp * dRad) * vtPerp < -EPS_SMALL) {
                  ++ nSkip ;
                  continue ;
               }
               if ( bPerpOk  &&
                    ( ptC + Z_AX * m_dMinZ[nGrid] - ptF - vtPerp * dRad) * vtPerp > EPS_SMALL  &&
                    ( ptC + Z_AX * m_dMaxZ[nGrid] - ptF - vtPerp * dRad) * vtPerp > EPS_SMALL) {
                  ++ nSkip ;
                  continue ;
               }

               Point3d ptInt1, ptInt2 ;
               Vector3d vtN1, vtN2 ;

              // Cilindro iniziale
               CylFrame.ChangeOrig( ptITip) ;
               if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dHei, dRad, bTapB, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
                  SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
               }

              // Cilindro finale:L'unica differenza rispetto a prima è l'origine 
              // del sistema di riferimento, quindi usiamo lo stesso sistema sommando a ptC
              // il vettore che congiunge le due origini.
               CylFrame.ChangeOrig( ptITip + vtMove) ;
               if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dHei, dRad, bTapB, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
                  SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
               }

              // Poliedro interno
               CylFrame.ChangeOrig( ptITip) ;
               if ( IntersLineMyPolyhedron( ptC, Z_AX, CylFrame, dOrtLen, 2 * dRad, dHei,
                                            dLongLen, ptInt1, vtN1, ptInt2, vtN2)) {
                  SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
               }
        
              // Se movimento non ortogonale all'asse cilindro ellittico di punta
               if ( dLongLen > EPS_SMALL) {
                  CylFrame.ChangeOrig( ptITip) ;
                  if ( IntersLineEllipticalCylinder( ptC, Z_AX, CylFrame, dRad, dLongLen, dOrtLen, 
                                                     bTapB, true, ptInt1, vtN1, ptInt2, vtN2)) {
                     SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
                  }
           
                 // Cilindro ellittico di base: L'unica differenza rispetto a prima è l'origine
                 // del sistema di riferimento, quindi usiamo lo stesso sistema sommando a ptC
                 // il vettore che congiunge le due origini.
                  CylFrame.ChangeOrig( ptITip + dHei * vtV1) ;
                  if ( IntersLineEllipticalCylinder( ptC, Z_AX, CylFrame, dRad, dLongLen, dOrtLen,
                                                     true, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
                     SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
                  }
               }
            }
         }
      }
   }
   
   //string sLog = "Skipped dexel = " + ToString( nSkip) + " / " + ToString( ( nEndI - nStartI + 1) * ( nEndJ - nStartJ + 1)) ;
   //LOG_DBG_INFO( GetEGkLogger(), sLog.c_str())

   return true ;
}

//----------------------------------------------------------------------------
static Vector3d
AdjustConeNormal( const Point3d& ptInt, const Vector3d& vtN, const Point3d& ptV, const Vector3d& vtToolDir,
                  double dMinRad, double dDeltaR, const Vector3d& vtArcNormMinR, const Vector3d& vtArcNormMaxR)
{
   if ( AreSameOrOppositeVectorEpsilon( vtN, vtToolDir, 0.1 * EPS_SMALL))
      return vtN ;
   Vector3d vtL = ( ptInt - ptV) - (( ptInt - ptV) * vtToolDir) * vtToolDir ;
   double dL = vtL.Len() ;
   vtL /= dL ;
   Vector3d vtOriginalN = ( ( dDeltaR - dL + dMinRad) / dDeltaR) * vtArcNormMinR + ((dL - dMinRad) / dDeltaR) * vtArcNormMaxR ;
   Vector3d vtNewN = - vtOriginalN.z * vtToolDir - vtOriginalN.x * vtL ;
   vtNewN.Normalize() ;
   return vtNewN ;
}

//----------------------------------------------------------------------------
bool
VolZmap::CompConus_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtToolDir, 
                            double dHei, double dMaxRad, double dMinRad, bool bTapB, bool bTapT,
                            const Vector3d& vtArcNormMaxR, const Vector3d& vtArcNormMinR, int nToolNum)
{
  // Verifico interferenza
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtToolDir, V_NULL, dMaxRad, dMinRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Geometria del cono
   double dDeltaR = dMaxRad - dMinRad ;
  
  // Studio simmetrie
   Point3d ptI = ptS ;
   Point3d ptF = ptE ;
   if ( vtToolDir * ( ptE - ptS) <= 0)
      swap( ptI, ptF) ;

   double dL = ( dMaxRad * dHei) / dDeltaR ;
   double dl = dL - dHei ;

   Point3d ptV = ptI - vtToolDir * dL ;

  // Vettori caratteristici del movimento
   Vector3d vtMove = ptF - ptI ;
   Vector3d vtMvLong = ( vtMove * vtToolDir) * vtToolDir ;
   Vector3d vtMvOrt = vtMove - vtMvLong ;

  // Terna destrorsa e unitaria
   Vector3d vtV1 = vtToolDir ;
   Vector3d vtV2 = vtMvOrt ;  vtV2.Normalize() ;
   Vector3d vtV3 = vtV1 ^ vtV2 ;

  // Sistema di riferimento intrinseco del movimento
   Frame3d ConusFrame ;  ConusFrame.Set( ptV, vtV2, vtV3, vtV1) ;

  // Dimensioni lineari movimento
   double dLongLen = vtMvLong.Len() ;
   double dOrtLen = vtMvOrt.Len() ;

  // Apertura del cono 
   double dTan = dDeltaR / dHei ;
   double dRatio = dLongLen / dOrtLen ;

  // Per costruire piani laterali poliedro interno
   double dCos = dTan * dRatio ;
   double dSin = ( 1 - dCos * dCos > 0 ? sqrt( 1 - dCos * dCos) : 0) ;

  // Dimensioni lineari descriventi il poliedro interno
   double dLenX = dLongLen ;
   double dLenY = dOrtLen ;
   double dLenZ = dSin * dMinRad ;
   double dDeltaX = dHei ;
   double dDeltaY = dCos * dDeltaR ;
   double dDeltaZ = dSin * dDeltaR ;

  // Sistema di riferimento poliedro
   Point3d ptO = ptV + vtV1 * dl + vtV2 * ( dCos * dMinRad) ;
   Frame3d PolyFrame ;
   PolyFrame.Set( ptO, vtV1, vtV2, vtV3) ;

  // Versori piani nel riferimento poliedro ( riferiti al sistema di riferimento) :
  // Sx, Dx
   Vector3d vtNs( - dTan, dCos, dSin) ;
   vtNs.Normalize() ;
   Vector3d vtNd( - dTan, dCos, - dSin) ;
   vtNd.Normalize() ;
  // Iniziale e finale
   Vector3d vtIF( - dDeltaY, dDeltaX, 0) ;
   vtIF.Normalize() ;
  // Up e Down
   Vector3d vtUD( - dLenY, dLenX, 0) ;
   vtUD.Normalize() ;

  // Punti dei piani (sempre espressi nel sistema PolyFrame)
   Point3d ptFacet135( 0, 0, dLenZ) ;
   Point3d ptFacet246( dLenX + dDeltaX, dLenY + dDeltaY, - dLenZ - dDeltaZ) ;

  // Necessità ricalcolo normali (perchè variabili per approx curve)
   bool bRecalNorm = ( ! vtArcNormMaxR.IsSmall()  &&  ! vtArcNormMinR.IsSmall()) ;

   if ( dRatio * dTan <= 1) {
    
      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            Point3d ptC( ( i + 0.5) * m_dStep, ( j + 0.5) * m_dStep, 0) ;

            Point3d ptInt1, ptInt2 ;
            Vector3d vtN1, vtN2 ;

           // Cono iniziale
            ConusFrame.ChangeOrig( ptV) ;
            if ( IntersLineConus( ptC, Z_AX, ConusFrame, dTan, dl, dL, bTapB, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
               if ( bRecalNorm) {
                  vtN1 = AdjustConeNormal( ptInt1, vtN1, ptV, vtToolDir, dMinRad, dDeltaR, vtArcNormMinR, vtArcNormMaxR) ;
                  vtN2 = AdjustConeNormal( ptInt2, vtN2, ptV, vtToolDir, dMinRad, dDeltaR, vtArcNormMinR, vtArcNormMaxR) ;
               }
               SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
            }

           // Cono finale
            ConusFrame.ChangeOrig( ptV + vtMove) ;
            if ( IntersLineConus( ptC, Z_AX, ConusFrame, dTan, dl, dL, bTapB, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
               if ( bRecalNorm) {
                  vtN1 = AdjustConeNormal( ptInt1, vtN1, ptV + vtMove, vtToolDir, dMinRad, dDeltaR, vtArcNormMinR, vtArcNormMaxR) ;
                  vtN2 = AdjustConeNormal( ptInt2, vtN2, ptV + vtMove, vtToolDir, dMinRad, dDeltaR, vtArcNormMinR, vtArcNormMaxR) ;
               }
               SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
            }
            
           // Solido interno
            Point3d ptPoly = GetToLoc( ptC, PolyFrame) ;
            Vector3d vtPoly = GetToLoc( Z_AX, PolyFrame) ;

           // Intervallo di intersezione (infinito) e normali (nulle)
            bool bValid = true ;
            double dPar1 = -INFINITO ;
            double dPar2 = +INFINITO ;
            vtN1 = V_NULL ;
            vtN2 = V_NULL ;

           // Verifica con facce iniziale e finale
            if ( bValid) {
              // Distanza con segno del punto di riferimento del dexel dal piano delle facce iniziale e finale
               double dDistI = ( ptPoly - ptFacet135) * -vtIF ;
               double dDistF = ( ptPoly - ptFacet246) * vtIF ;
              // Se dexel non parallelo alle facce
               if ( abs( vtPoly * vtIF) > COS_ORTO_ANG_ZERO) {
                 // posizione parametrica delle intersezioni
                  double dParI = -dDistI / ( vtPoly * -vtIF) ;
                  double dParF = -dDistF / ( vtPoly * vtIF) ;
                 // se intervallo tra intersezioni praticamente nullo
                  if ( abs( dParI - dParF) < EPS_ZERO)
                     bValid = false ;
                 // altrimenti
                  else {
                     if ( dParI < dParF) {
                        dPar1 = dParI ;
                        vtN1 = vtIF ;
                        dPar2 = dParF ;
                        vtN2 = -vtIF ;
                     }
                     else {
                        dPar1 = dParF ;
                        vtN1 = -vtIF ;
                        dPar2 = dParI ;
                        vtN2 = vtIF ;
                     }
                  }
               }
              // altrimenti praticamente parallelo
               else {
                 // se esterno ad almeno uno invalida tutto
                  if ( dDistI > 0  ||  dDistF > 0)
                     bValid = false ;
                 // altrimenti non cambia niente
               }
            }

           // Verifica con facce sopra e sotto
            if ( bValid) {
              // Distanza con segno del punto di riferimento del dexel dal piano delle facce sopra e sotto
               double dDistU = ( ptPoly - ptFacet246) * -vtUD ;
               double dDistD = ( ptPoly - ptFacet135) * vtUD ;
              // Se dexel non parallelo alle facce
               if ( abs( vtPoly * vtUD) > COS_ORTO_ANG_ZERO) {
                 // posizione parametrica delle intersezioni
                  double dParU = -dDistU / ( vtPoly * -vtUD) ;
                  double dParD = -dDistD / ( vtPoly * vtUD) ;
                 // se intervallo tra intersezioni praticamente nullo
                  if ( abs( dParU - dParD) < EPS_ZERO)
                     bValid = false ;
                 // altrimenti
                  else {
                     if ( dParU < dParD) {
                        if ( dParD < dPar1 + EPS_ZERO  ||  dParU > dPar2 - EPS_ZERO)
                           bValid = false ;
                        else {
                           if ( dParU > dPar1) {
                              dPar1 = dParU ;
                              vtN1 = vtUD ;
                           }
                           if ( dParD < dPar2) {
                              dPar2 = dParD ;
                              vtN2 = -vtUD ;
                           }
                        }
                     }
                     else {
                        if ( dParU < dPar1 + EPS_ZERO  ||  dParD > dPar2 - EPS_ZERO)
                           bValid = false ;
                        else {
                           if ( dParD > dPar1) {
                              dPar1 = dParD ;
                              vtN1 = -vtUD ;
                           }
                           if ( dParU < dPar2) {
                              dPar2 = dParU ;
                              vtN2 = vtUD ;
                           }
                        }
                     }
                  }
               }
              // altrimenti praticamente parallelo
               else {
                 // se esterno ad almeno uno invalida tutto
                  if ( dDistU > 0  ||  dDistD > 0)
                     bValid = false ;
                 // altrimenti non cambia niente
               }
            }

           // Taglio con la faccia sinistra
            if ( bValid) {
              // Distanza con segno del punto di riferimento del dexel dal piano della faccia sinistra
               double dDistS = ( ptPoly - ptFacet135) * vtNs ;
              // Se dexel non parallelo alla faccia
               if ( abs( vtPoly * vtNs) > COS_ORTO_ANG_ZERO) {
                 // posizione parametrica della intersezione
                  double dParS = -dDistS / ( vtPoly * vtNs) ;
                 // verifico limitazioni su inizio e fine dell'intervallo
                  int nLimit = 0 ;
                 // se limita inizio
                  if ( vtPoly * vtNs < 0) {
                    // se oltre la fine, invalida tutto
                     if ( dParS > dPar2 - EPS_ZERO)
                        bValid = false ;
                    // se altrimenti solo oltre inizio, riduce
                     else if ( dParS >= dPar1) {
                        dPar1 = dParS ;
                        nLimit = 1 ;
                     }
                  }
                 // altrimenti limita fine
                  else {
                    // se prima dell'inizio, invalida tutto
                     if ( dParS < dPar1 + EPS_ZERO)
                        bValid = false ;
                    // se altrimenti solo prima della fine, riduce
                     else if ( dParS <= dPar2) {
                        dPar2 = dParS ;
                        nLimit = 2 ; 
                     }        
                  }
                 // se limita, devo aggiornare la normale
                  if ( nLimit != 0) {
                     Vector3d vtNewN = -vtNs ;
                     if ( bRecalNorm) {
                        Vector3d vtRadial( 0, dMinRad * dCos, dMinRad * dSin) ;
                        vtRadial.Normalize() ;
                        Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtRadial - vtArcNormMaxR.z * X_AX ;
                        Vector3d vtOrigMinR = - vtArcNormMinR.x * vtRadial - vtArcNormMinR.z * X_AX ;
                        vtOrigMaxR.Normalize() ;
                        vtOrigMinR.Normalize() ;
                        Point3d ptInt = ptPoly + dParS * vtPoly ;
                        vtNewN = ( ( dDeltaZ - ptInt.z + dLenZ) / dDeltaZ) * vtOrigMinR + ( ( ptInt.z - dLenZ) / dDeltaZ) * vtOrigMaxR ;
                        vtNewN.Normalize() ;
                     }
                     if ( nLimit == 1)
                        vtN1 = vtNewN ;
                     else
                        vtN2 = vtNewN ;
                  }
               }
              // altrimenti praticamente parallelo
               else {
                 // se esterno invalida tutto
                  if ( dDistS > 0)
                     bValid = false ;
                 // altrimenti non cambia niente
               }
            }

           // Taglio con la faccia destra
            if ( bValid) {
              // Distanza con segno del punto di riferimento del dexel dal piano della faccia destra
               double dDistD = ( ptPoly - ptFacet246) * vtNd ;
              // Se dexel non parallelo alla faccia
               if ( abs( vtPoly * vtNd) > COS_ORTO_ANG_ZERO) {
                 // posizione parametrica della intersezione
                  double dParD = -dDistD / ( vtPoly * vtNd) ;
                 // verifico limitazioni su inizio e fine dell'intervallo
                  int nLimit = 0 ;
                 // se limita inizio
                  if ( vtPoly * vtNd < 0) {
                    // se oltre la fine, invalida tutto
                     if ( dParD > dPar2 - EPS_ZERO)
                        bValid = false ;
                    // se altrimenti solo oltre inizio, riduce
                     else if ( dParD >= dPar1) {
                        dPar1 = dParD ;
                        nLimit = 1 ;
                     }
                  }
                 // altrimenti limita fine
                  else {
                    // se prima dell'inizio, invalida tutto
                     if ( dParD < dPar1 + EPS_ZERO)
                        bValid = false ;
                    // se altrimenti solo prima della fine, riduce
                     else if ( dParD <= dPar2) {
                        dPar2 = dParD ;
                        nLimit = 2 ; 
                     }        
                  }
                 // se limita, devo aggiornare la normale
                  if ( nLimit != 0) {
                     Vector3d vtNewN = -vtNd ;
                     if ( bRecalNorm) {
                        Vector3d vtRadial( 0, dMinRad * dCos, -dMinRad * dSin) ;
                        vtRadial.Normalize() ;
                        Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtRadial - vtArcNormMaxR.z * X_AX ;
                        Vector3d vtOrigMinR = - vtArcNormMinR.x * vtRadial - vtArcNormMinR.z * X_AX ;
                        vtOrigMaxR.Normalize() ;
                        vtOrigMinR.Normalize() ;
                        Point3d ptInt = ptPoly + dParD * vtPoly ;
                        vtNewN = ( ( dDeltaZ - abs( ptInt.z) + dLenZ) / dDeltaZ) * vtOrigMinR + ( ( abs( ptInt.z) - dLenZ) / dDeltaZ) * vtOrigMaxR ;
                        vtNewN.Normalize() ;
                     }
                     if ( nLimit == 1)
                        vtN1 = vtNewN ;
                     else
                        vtN2 = vtNewN ;
                  }
               }
              // altrimenti praticamente parallelo
               else {
                 // se esterno invalida tutto
                  if ( dDistD > 0)
                     bValid = false ;
                 // altrimenti non cambia niente
               }
            }

           // Se rimasto qualcosa lo sottraggo al dexel
            if ( bValid) {
              // Punti di intersezione e normali nel sistema griglia
               ptInt1 = ptC + dPar1 * Z_AX ;
               vtN1.ToGlob( PolyFrame) ;
               ptInt2 = ptC + dPar2 * Z_AX ; 
               vtN2.ToGlob( PolyFrame) ;
              // Eseguo sottrazione
               SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
            }

           // Se movimento non ortogonale all'asse sottraggo i cilindri ellittici
            if ( dLongLen > EPS_SMALL) {
            
              // Traslazione ellisse di punta
               ConusFrame.ChangeOrig( ptV + vtV1 * dl) ;
               if ( IntersLineEllipticalCylinder( ptC, Z_AX, ConusFrame, dMinRad, dLongLen, dOrtLen,
                                                  bTapB, true, ptInt1, vtN1, ptInt2, vtN2)) {
                  SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
               }
            
              // Traslazione ellisse di base
               ConusFrame.ChangeOrig( ptV + vtV1 * dL) ;
               if ( IntersLineEllipticalCylinder( ptC, Z_AX, ConusFrame, dMaxRad, dLongLen, dOrtLen,
                                                  true, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
                  SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
               }
            }
         }
      }
      return true ;
   }

   else {
      for ( int i = nStartI ; i <= nEndI ; ++ i) {
         for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

            Point3d ptC( ( i + 0.5) * m_dStep, ( j + 0.5) * m_dStep, 0) ;

            Point3d ptInt1, ptInt2 ;
            Vector3d vtN1, vtN2 ;

           // Cono 
            ConusFrame.ChangeOrig( ptV) ;
            if ( IntersLineConus( ptC, Z_AX, ConusFrame, dTan, dl, dL, bTapB, true, ptInt1, vtN1, ptInt2, vtN2)) {
               if ( bRecalNorm) {
                  vtN1 = AdjustConeNormal( ptInt1, vtN1, ptV, vtToolDir, dMinRad, dDeltaR, vtArcNormMinR, vtArcNormMaxR) ;
                  vtN2 = AdjustConeNormal( ptInt2, vtN2, ptV, vtToolDir, dMinRad, dDeltaR, vtArcNormMinR, vtArcNormMaxR) ;
               }
               SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
            }

           // Traslazione ellisse
            ConusFrame.ChangeOrig( ptV + vtV1 * dL) ;
            if ( IntersLineEllipticalCylinder( ptC, Z_AX, ConusFrame, dMaxRad, dLongLen, dOrtLen,
                                               true, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
               SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
            }
         }
      }
      return true ;
   }
}

//----------------------------------------------------------------------------
bool 
VolZmap::CompPar_Milling( int nGrid, double dLenX, double dLenY, double dLenZ,
                          const Point3d& ptS, const Point3d& ptE,
                          const Vector3d& vtToolDir, const Vector3d& vtAux, int nToolNum)
{
   Point3d ptMyS = ptS - EPS_SMALL * vtToolDir ;
   Point3d ptMyE = ptE - EPS_SMALL * vtToolDir ;

   dLenX -= ( 2 * EPS_SMALL) ;
   dLenY -= ( 2 * EPS_SMALL) ;
   dLenZ -= ( 2 * EPS_SMALL) ;

  // Controllo sull'interferenza utensile-solido
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestParaBBox( nGrid, ptMyS, ptMyE, vtToolDir, vtAux, dLenX, dLenY, dLenZ, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Vettore di movimento
   Vector3d vtMove = ptMyE - ptMyS ;

  // Sistema di riferimento del solido nella posizione iniziale (con vtMove derivo quello finale)
   Frame3d ParaFrame ;
   Vector3d vtV3 = vtToolDir ;
   Vector3d vtV1 = vtAux ^ vtV3 ;
   Vector3d vtV2 = vtV3 ^ vtV1 ;
   ParaFrame.Set( ORIG, vtV1, vtV2, vtV3) ;
   Point3d ptV = ptMyS - dLenZ * ParaFrame.VersZ() - ( 0.5 * dLenX) * ParaFrame.VersX() ;
   ParaFrame.ChangeOrig( ptV) ;

  // Studio del volume asportato durante il moto
   Frame3d MotionFrame ;
   Vector3d vtDiagA = dLenX * ParaFrame.VersX() + dLenY * ParaFrame.VersY() ;
   Vector3d vtDiagB = dLenX * ParaFrame.VersX() - dLenY * ParaFrame.VersY() ;
   Vector3d vtW3 = ( abs( vtDiagA * vtMove) <= abs( vtDiagB * vtMove) ? vtDiagA : vtDiagB) ;
   Point3d ptOrig = ptMyS - vtW3 / 2 - vtToolDir * ( dLenZ / 2) ;
   double dLenW3 = vtW3.Len() ;
   vtW3 /= dLenW3 ;
   double dDeltaW3 = vtMove * vtW3 ;
   Vector3d vtW1 = vtMove - dDeltaW3 * vtW3 ;
   double dLenW1 = vtW1.Len() ;
   vtW1 /= dLenW1 ;
   Vector3d vtW2 = vtW3 ^ vtW1 ;
   MotionFrame.Set( ptOrig, vtW1, vtW2, vtW3) ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         Point3d ptC( ( i + 0.5) * m_dStep, ( j + 0.5) * m_dStep, 0) ;

         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;

        // Solido nella posizione iniziale
         ParaFrame.ChangeOrig( ptV) ;
         if ( IntersLineMyPolyhedron( ptC, Z_AX, ParaFrame, dLenX, dLenY, dLenZ, 0, ptInt1, vtN1, ptInt2, vtN2)) {
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ; 
         }

        // Solido nella posizione finale
         ParaFrame.ChangeOrig( ptV + vtMove) ;
         if ( IntersLineMyPolyhedron( ptC, Z_AX, ParaFrame, dLenX, dLenY, dLenZ, 0, ptInt1, vtN1, ptInt2, vtN2)) {
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
         }

        // Volume spazzato nel moto
         if ( IntersLineMyPolyhedron( ptC, Z_AX, MotionFrame, dLenW1, dLenZ, dLenW3, dDeltaW3, ptInt1, vtN1, ptInt2, vtN2)) {
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ; 
         }
      }
   }

   return true ;
}

// ---------- SFERA ----------------------------------------------------------

//----------------------------------------------------------------------------
bool
VolZmap::CompBall_Milling( int nGrid, const Point3d& ptLs, const Point3d& ptLe, double dRad, int nToolNum)
{
  // Verifico interferisca
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptLs, ptLe, V_NULL, V_NULL, dRad, 0, 0, nStartI, nStartJ, nEndI, nEndJ))
      return true ;
  // Vettore modivemnto
   Vector3d vtV = ptLe - ptLs ;
   double dLengthPath = vtV.Len() ;
   if ( dLengthPath > EPS_ZERO)
      vtV /= dLengthPath ;
  // Riferimento per cilindro inviluppo della sfera lungo il movimento
   Frame3d CylFrame ;
   CylFrame.Set( ptLs, vtV) ;

   double dSqRad = dRad * dRad ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;
         Point3d ptC( dX, dY, 0) ;

        // Sfera in posizione start
         double dStSqDXY = SqDistXY( ptC, ptLs) ;
         if ( dStSqDXY < dSqRad) {
            double dMin = ptLs.z - sqrt( dSqRad - dStSqDXY) ;
            Vector3d vtNmin = ptLs - Point3d( dX, dY, dMin) ;
            vtNmin.Normalize() ;
            double dMax = ptLs.z + sqrt( dSqRad - dStSqDXY) ;
            Vector3d vtNmax = ptLs - Point3d( dX, dY, dMax) ;
            vtNmax.Normalize() ;
            SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, nToolNum) ;
         }

        // Sfera in posizione end
         double dEnSqDXY = SqDistXY( ptC, ptLe) ;
         if ( dEnSqDXY < dSqRad) {
            double dMin = ptLe.z - sqrt( dSqRad - dEnSqDXY) ;
            Vector3d vtNmin = ptLe - Point3d( dX, dY, dMin) ;
            vtNmin.Normalize() ;
            double dMax = ptLe.z + sqrt( dSqRad - dEnSqDXY) ;
            Vector3d vtNmax = ptLe - Point3d( dX, dY, dMax) ;
            vtNmax.Normalize() ;
            SubtractIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, nToolNum) ;
         }

        // Cilindro inviluppo della sfera
         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;
         if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dLengthPath, dRad, false, false, ptInt1, vtN1, ptInt2, vtN2)) {
            SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
         }
      }
   }

   return true ;
}

// ------------------------- Utensili additivi ---------------------------------------------------------------------------------

//----------------------------------------------------------------------------
bool
VolZmap::AddingMotion( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtAx)
{
  // Dimensioni lineari dell'utensile
   double dHei = m_vTool[m_nCurrTool].GetHeigth() ;
   double dRad = m_vTool[m_nCurrTool].GetRadius() ;
   double dCornerRad = m_vTool[m_nCurrTool].GetCornRadius() ;

  // Utensile sfiancato
   if ( dCornerRad * dCornerRad - 0.25 * dHei * dHei > 0) {
      return AddingGeneral( nGrid, ptS, ptE, vtAx) ;   
   }
  // Utensile sferico
   else if ( dRad - dCornerRad < EPS_SMALL) {
      return AddingSphere( nGrid, ptS - dRad * vtAx, ptE - dRad * vtAx, dRad) ;
   }
  // Utensile cilindro
   else if ( dCornerRad < EPS_SMALL) {
      return AddingCylinder( nGrid, ptS, ptE, vtAx, dHei, dRad) ;
   }
  // Utensile naso di toro
   else {
      return AddingGeneral( nGrid, ptS, ptE, vtAx) ;
   }
}

//----------------------------------------------------------------------------
bool
VolZmap::AddingGeneral( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtAx)
{
  // Descrizione geometrica del moto  
   Point3d ptI = ptS ;
   Point3d ptF = ptE ;
   Vector3d vtMove = ptE - ptS ;
  // Vettore delle normali agli archi
   const VCT3DVECTOR& vArcNorm = m_vTool[m_nCurrTool].GetArcNormalVec() ;
  // Poinché l'asse utensile è parallelo all'asse Z, definisco un sistema di
  // riferimento ad hoc in cui le normali agli archi giacciano nel piano XZ.
   Frame3d frNormFrame ;
   frNormFrame.Set( ORIG, X_AX, -Z_AX, Y_AX) ;
  // Ciclo sulle curve del profilo
   const CurveComposite& ToolProfile = m_vTool[m_nCurrTool].GetApproxOutline() ;
   int i = - 1 ;
   const ICurve* pCurve = ToolProfile.GetCurve( ++ i) ;
   while ( pCurve != nullptr) {
   
      double dHeight = 0 ;

     // Se segmento
      if ( pCurve->GetType() == CRV_LINE) {
        // Recupero gli estremi
         const ICurveLine* pLine = GetCurveLine( pCurve) ;
         Point3d ptStart = pLine->GetStart() ;
         Point3d ptEnd = pLine->GetEnd() ;
         int nNormNum = pLine->GetTempProp();
         Vector3d vtNormSt, vtNormEn;
         if ( nNormNum != 0) {
            vtNormSt = vArcNorm[nNormNum - 1] ;
            vtNormEn = vArcNorm[nNormNum] ;
            vtNormSt.ToLoc(frNormFrame);
            vtNormEn.ToLoc(frNormFrame);
         }
        // Ne determino l'altezza
         dHeight = abs( ptStart.y - ptEnd.y) ;
         if ( dHeight > EPS_SMALL) {
           // Se X costante, è un cilindro
            if ( abs( ptStart.x - ptEnd.x) < EPS_SMALL) {
               double dRadius = ptStart.x ;
               if (dRadius > 10 * EPS_SMALL)
                  AddingCylinder( nGrid, ptI, ptF, vtAx, dHeight, dRadius) ;
            }
           // Se X crescente, è un cono con vettore equiverso a quello dell'utensile
            else if ( ptStart.x > ptEnd.x) {
               double dMaxRad = ptStart.x ;
               double dMinRad = ptEnd.x ;
               AddingTruncatedCone( nGrid, ptI, ptF, vtAx, dMaxRad, dMinRad, dHeight, vtNormSt, vtNormEn) ;
            }
           // Se X decrescente, è un cono con vettore opposto a quello dell'utensile
            else if ( ptStart.x < ptEnd.x) {
               double dMaxRad = ptEnd.x ; 
               double dMinRad = ptStart.x ;
               Point3d ptIn = ptI - vtAx * dHeight ;
               Point3d ptFn = ptIn + vtMove ;
               vtNormEn.z *= -1 ;
               vtNormSt.z *= -1 ;
               AddingTruncatedCone( nGrid, ptIn, ptFn, - vtAx, dMaxRad, dMinRad, dHeight, vtNormEn, vtNormSt) ;
               
            }  
           // Passo alla curva successiva
            pCurve = ToolProfile.GetCurve( ++ i) ;
         }
         else {
           // Passo alla curva successiva
            pCurve = ToolProfile.GetCurve( ++ i) ;
         }
      }

     // Determino le posizioni iniziale e finale del componente successivo
      ptI = ptI - vtAx * dHeight ;
      ptF = ptI + vtMove ;
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::AddingCylinder( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtAx, double dHei, double dRad)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   // Verifica sull'interferenza utensile Zmap
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtAx, V_NULL, dRad, dRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

   Vector3d vtV1 = ptE - ptS ;
   double dLen1 = vtV1.Len() ;
   vtV1 /= dLen1 ;

   double dMyTol = 0 ;
   Frame3d CylFrame, PolyFrame ;
   if ( ! CylFrame.Set( ptS - dHei * vtAx, vtAx))
      return false ;
   if ( ! PolyFrame.Set( ptS - ( dHei + dMyTol) * vtAx, vtAx, vtV1))
      return false ;
   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
         
         Point3d ptC( ( i + 0.5) * m_dStep, ( j + 0.5) * m_dStep, 0) ;
                                           
         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;

         if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dHei, dRad, true, true,
                                  ptInt1, vtN1, ptInt2, vtN2)) {
            AddIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, - vtN1, - vtN2, CurrTool.GetToolNum()) ;
         }

         if ( IntersLineCylinder( ptC - dLen1 * vtV1, Z_AX, CylFrame, dHei, dRad, true, true,
                                  ptInt1, vtN1, ptInt2, vtN2)) {
            AddIntervals( nGrid, i, j, ptInt1.z + dLen1 * vtV1.z, ptInt2.z + dLen1 * vtV1.z, - vtN1, - vtN2, CurrTool.GetToolNum()) ;
         }

         if ( IntersLineMyPolyhedron( ptC, Z_AX, PolyFrame, dLen1, 2 * ( dRad + dMyTol), dHei + 2 * dMyTol, 0,
                                      ptInt1, vtN1, ptInt2, vtN2)) {
            AddIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, - vtN1, - vtN2, CurrTool.GetToolNum()) ;
         }
      }
   }

   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::AddingTruncatedCone( int nGrid, const Point3d& ptS, const Point3d& ptE, const Vector3d& vtAx,
                              double dMaxRad, double dMinRad, double dHei, 
                              const Vector3d& vtArcNormMaxR, const Vector3d& vtArcNormMinR)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   // Verifico interferenza
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, vtAx, V_NULL, dMaxRad, dMinRad, dHei, nStartI, nStartJ, nEndI, nEndJ))
      return true ;

  // Geometria del cono
   double dDeltaR = dMaxRad - dMinRad ;
  
  // Studio simmetrie
   Point3d ptI = ( vtAx * ( ptE - ptS) > 0 ? ptS : ptE) ;
   Point3d ptF = ( vtAx * ( ptE - ptS) > 0 ? ptE : ptS) ;

   double dL = ( dMaxRad * dHei) / dDeltaR ;
   double dl = dL - dHei ;

   Point3d ptV = ptI - vtAx * dL ;

  // Vettori caratteristici del movimento
  // Elimino eventuali componenti del moto lungo l'asse.
   Vector3d vtMove = ptF - ptI ;
   Vector3d vtMvLong = ( vtMove * vtAx) * vtAx ;
   Vector3d vtMvOrt = vtMove - vtMvLong ;

  // Terna destrorsa e unitaria
   Vector3d vtV1 = vtAx ;
   Vector3d vtV2 = vtMvOrt ;  vtV2.Normalize() ;
   Vector3d vtV3 = vtV1 ^ vtV2 ;

  // Sistema di riferimento intrinseco del movimento
   Frame3d ConusFrame ;
   if ( ! ConusFrame.Set( ptV, vtV1, vtV2, vtV3))
      return false ;

  // Dimensioni lineari movimento
   double dLongLen = 0 ;
   double dOrtLen = vtMvOrt.Len() ;

  // Apertura del cono 
   double dTan = dDeltaR / dHei ;
   double dRatio = dLongLen / dOrtLen ;

  // Per costruire piani laterali poliedro interno
   double dCos = dTan * dRatio ;
   double dSin = ( 1 - dCos * dCos > 0 ? sqrt( 1 - dCos * dCos) : 0) ;

  // Dimensioni lineari descriventi il poliedro interno
   double dLenX = dLongLen ;
   double dLenY = dOrtLen ;
   double dLenZ = dSin * dMinRad ;
   double dDeltaX = dHei ;
   double dDeltaY = dCos * dDeltaR ;
   double dDeltaZ = dSin * dDeltaR ;

  // Sistema di riferimento poliedro
   Point3d ptO = ptV + vtV1 * dl + vtV2 * ( dCos * dMinRad) ;
   Frame3d PolyFrame ;
   if ( ! PolyFrame.Set( ptO, vtV1, vtV2, vtV3))
      return false ;

  // Versori piani nel riferimento poliedro ( riferiti al sistema di riferimento) :
  // Sx, Dx
   Vector3d vtNs( - dTan, dCos, dSin) ;
   vtNs.Normalize() ;
   Vector3d vtNd( - dTan, dCos, - dSin) ;
   vtNd.Normalize() ;
  // Iniziale e finale
   Vector3d vtIF( - dDeltaY, dDeltaX, 0) ;
   vtIF.Normalize() ;
  // Up e Down
   Vector3d vtUD( - dLenY, dLenX, 0) ;
   vtUD.Normalize() ;

  // Punti dei piani (sempre espressi nel sistema PolyFrame)
   Point3d ptFacet135( 0, 0, dLenZ) ;
   Point3d ptFacet246( dLenX + dDeltaX, dLenY + dDeltaY, - dLenZ - dDeltaZ) ;

   Vector3d vtUmv = vtMove ;  vtUmv.Normalize() ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {
         
         Point3d ptC( ( i + 0.5) * m_dStep, ( j + 0.5) * m_dStep, 0) ;

         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;

        // Cono iniziale
         ConusFrame.ChangeOrig( ptV) ;
         if ( IntersLineConus( ptC, Z_AX, ConusFrame, dTan, dl, dL, true, true, ptInt1, vtN1, ptInt2, vtN2)) {
            vtN1 *= - 1 ;
            vtN2 *= - 1 ;
            if ( ! ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall())) {
               if ( ! AreSameOrOppositeVectorEpsilon( vtN1, vtAx, 0.1 * EPS_SMALL)) {
                  Vector3d vtL1 = ptInt1 - ptV ;
                  vtL1 -= ( vtL1 * vtAx) * vtAx ;
                  double dL1 = vtL1.Len() ;
                  vtL1 /= dL1 ;
                  Vector3d vtOriginalN1 = ( ( dDeltaR - dL1 + dMinRad) / dDeltaR) * vtArcNormMinR + ((dL1 - dMinRad) / dDeltaR) * vtArcNormMaxR;
                  vtOriginalN1.Normalize() ;
                  vtN1 = vtOriginalN1.z * vtAx + vtOriginalN1.x * vtL1 ;
                  vtN1.Normalize() ;
               }
               if ( ! AreSameOrOppositeVectorEpsilon( vtN2, vtAx, 0.1 * EPS_SMALL)) {
                  Vector3d vtL2 = ptInt2 - ptV ;
                  vtL2 -= ( vtL2 * vtAx) * vtAx ;
                  double dL2 = vtL2.Len() ;
                  vtL2 /= dL2 ;
                  Vector3d vtOriginalN2 = ( ( dDeltaR - dL2 + dMinRad) / dDeltaR) * vtArcNormMinR + ( ( dL2 - dMinRad) / dDeltaR) * vtArcNormMaxR ;
                  vtOriginalN2.Normalize() ;
                  vtN2 = vtOriginalN2.z * vtAx + vtOriginalN2.x * vtL2 ;
                  vtN2.Normalize() ;
               }
            }
            AddIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, CurrTool.GetToolNum()) ;
         }
      
        // Cono finale
         ConusFrame.ChangeOrig( ptV + vtMove) ;
         if ( IntersLineConus( ptC, Z_AX, ConusFrame, dTan, dl, dL, true, true, ptInt1, vtN1, ptInt2, vtN2)) {
            vtN1 *= - 1 ;
            vtN2 *= - 1 ;
            if ( ! ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall())) {
               if ( ! AreSameOrOppositeVectorEpsilon( vtN1, vtAx, 0.1 * EPS_SMALL)) {
                  Vector3d vtL1 = ptInt1 - ptV - vtMove ;
                  vtL1 -= ( vtL1 * vtAx) * vtAx ;
                  double dL1 = vtL1.Len() ;
                  vtL1 /= dL1 ;
                  Vector3d vtOriginalN1 = ( ( dDeltaR - dL1 + dMinRad) / dDeltaR) * vtArcNormMinR + ( ( dL1 - dMinRad) / dDeltaR) * vtArcNormMaxR ;
                  vtOriginalN1.Normalize() ;
                  vtN1 = vtOriginalN1.z * vtAx + vtOriginalN1.x * vtL1 ;
                  vtN1.Normalize() ;
               }
               if ( ! AreSameOrOppositeVectorEpsilon(vtN2, vtAx, 0.1 * EPS_SMALL)) {
                  Vector3d vtL2 = ptInt2 - ptV - vtMove ;
                  vtL2 -= (vtL2 * vtAx) * vtAx;
                  double dL2 = vtL2.Len() ;
                  vtL2 /= dL2 ;
                  Vector3d vtOriginalN2 = ( ( dDeltaR - dL2 + dMinRad) / dDeltaR) * vtArcNormMinR + ( ( dL2 - dMinRad) / dDeltaR) * vtArcNormMaxR ;
                  vtOriginalN2.Normalize() ;
                  vtN2 = vtOriginalN2.z * vtAx + vtOriginalN2.x * vtL2 ;
                  vtN2.Normalize() ;
               }
            }
            AddIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, CurrTool.GetToolNum()) ;
         }
         
        // Solido interno
         Point3d ptPoly = ptC ;
         Vector3d vtPoly = Z_AX ;

         ptPoly.ToLoc( PolyFrame) ;
         vtPoly.ToLoc( PolyFrame) ;

         Point3d ptPoly1 = ptPoly + ( ( ( ptFacet135 - ptPoly) * vtNs) / ( vtPoly * vtNs)) * vtPoly ;
         Point3d ptPoly2 = ptPoly + ( ( ( ptFacet246 - ptPoly) * vtNd) / ( vtPoly * vtNd)) * vtPoly ;
         Point3d ptPoly3 = ptPoly + ( ( ( ptFacet135 - ptPoly) * vtIF) / ( vtPoly * vtIF)) * vtPoly ;
         Point3d ptPoly4 = ptPoly + ( ( ( ptFacet246 - ptPoly) * vtIF) / ( vtPoly * vtIF)) * vtPoly ;
         Point3d ptPoly5 = ptPoly + ( ( ( ptFacet135 - ptPoly) * vtUD) / ( vtPoly * vtUD)) * vtPoly ;
         Point3d ptPoly6 = ptPoly + ( ( ( ptFacet246 - ptPoly) * vtUD) / ( vtPoly * vtUD)) * vtPoly ;

         int nIntNum = 0 ;

        // Intersezione con la prima faccia
         if ( abs( vtPoly * vtNs) > COS_ORTO_ANG_ZERO) {
            if ( dLenY * ( ptPoly1.x + EPS_SMALL) > dLenX * ptPoly1.y  && 
                 dLenY * ( ptPoly1.x - dDeltaX - EPS_SMALL) < dLenX * ( ptPoly1.y - dDeltaY)  && 
                 dDeltaX * ( ptPoly1.y + EPS_SMALL) > dDeltaY * ptPoly1.x  && 
                 dDeltaX * ( ptPoly1.y - dLenY - EPS_SMALL) < dDeltaY * ( ptPoly1.x - dLenX)) {
               ptInt1 = ptPoly1 ;
               vtN1 = - vtNs ;
               if ( ! ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall())) {
                  Vector3d vtRadial( 0, dMinRad * dCos, dMinRad * dSin) ;
                  vtRadial.Normalize() ;
                  Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtRadial - vtArcNormMaxR.z * X_AX ;
                  Vector3d vtOrigMinR = - vtArcNormMinR.x * vtRadial - vtArcNormMinR.z * X_AX ;
                  vtOrigMaxR.Normalize() ;
                  vtOrigMinR.Normalize() ;
                  vtN1 = - ( ( dDeltaZ - ptInt1.z + dLenZ) / dDeltaZ) * vtOrigMinR - ( ( ptInt1.z - dLenZ) / dDeltaZ) * vtOrigMaxR ;
                  vtN1.Normalize() ;
               }
               ++ nIntNum ;
            }
         }
        // Intersezione con la seconda faccia
         if ( abs( vtPoly * vtNd) > COS_ORTO_ANG_ZERO) {
            if ( dLenY * ( ptPoly2.x + EPS_SMALL) > dLenX * ptPoly2.y  && 
                 dLenY * ( ptPoly2.x - dDeltaX - EPS_SMALL) < dLenX * ( ptPoly2.y - dDeltaY)  && 
                 dDeltaX * ( ptPoly2.y + EPS_SMALL) > dDeltaY * ptPoly2.x  && 
                 dDeltaX * ( ptPoly2.y - dLenY - EPS_SMALL) < dDeltaY * ( ptPoly2.x - dLenX)) {

               if ( nIntNum == 0) {
                  ptInt1 = ptPoly2 ;
                  vtN1 = - vtNd ;
                  if ( ! ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall())) {
                     Vector3d vtRadial( 0, dMinRad * dCos, - dMinRad * dSin) ;
                     vtRadial.Normalize() ;
                     Vector3d vtOrigMaxR = - vtArcNormMaxR.x * vtRadial - vtArcNormMaxR.z * X_AX ;
                     Vector3d vtOrigMinR = - vtArcNormMinR.x * vtRadial - vtArcNormMinR.z * X_AX ;
                     vtOrigMaxR.Normalize() ;
                     vtOrigMinR.Normalize() ;
                     vtN1 = - ( ( dDeltaZ - abs( ptInt1.z) + dLenZ) / dDeltaZ) * vtOrigMinR - ( ( abs( ptInt1.z) - dLenZ) / dDeltaZ) * vtOrigMaxR ;
                     vtN1.Normalize() ;
                  }
                  ++ nIntNum ;
               }         
               else if ( ( ptInt1 - ptPoly2).SqLen() > SQ_EPS_SMALL) {
                  ptInt2 = ptPoly2 ;
                  vtN2 = - vtNd ;
                  if ( ! ( vtArcNormMaxR.IsSmall()  ||  vtArcNormMinR.IsSmall())) {
                     Vector3d vtRadial( 0, dMinRad * dCos, -dMinRad * dSin) ;
                     vtRadial.Normalize() ;
                     Vector3d vtOrigMaxR = -vtArcNormMaxR.x * vtRadial - vtArcNormMaxR.z * X_AX ;
                     Vector3d vtOrigMinR = -vtArcNormMinR.x * vtRadial - vtArcNormMinR.z * X_AX ;
                     vtOrigMaxR.Normalize() ;
                     vtOrigMinR.Normalize() ;
                     vtN2 = - ( ( dDeltaZ - abs( ptInt2.z) + dLenZ) / dDeltaZ) * vtOrigMinR - ( ( abs( ptInt2.z) - dLenZ) / dDeltaZ) * vtOrigMaxR ;
                     vtN2.Normalize() ;
                  }
                  ++ nIntNum ;
               }
            }
         }
        // Intersezione con la terza faccia
         if ( abs( vtPoly * vtIF) > COS_ORTO_ANG_ZERO) {
            if ( nIntNum < 2  &&
                 ptPoly3.x > - EPS_SMALL  &&  ptPoly3.x < dDeltaX + EPS_SMALL  && 
                 dDeltaX * abs( ptPoly3.z) < dDeltaX * dLenZ + dDeltaZ * ptPoly3.x + dDeltaX * EPS_SMALL) {

               if ( nIntNum == 0) {
                  ptInt1 = ptPoly3 ;
                  vtN1 = - vtIF ; 
                  ++ nIntNum ;
               }
               else if ( ( ptInt1 - ptPoly3).SqLen() > SQ_EPS_SMALL) {
                  ptInt2 = ptPoly3 ;
                  vtN2 = - vtIF ;
                  ++ nIntNum ;
               }
            }
         }

        // Intersezione con la quarta faccia
         if ( abs( vtPoly * vtIF) > COS_ORTO_ANG_ZERO) {
            if ( nIntNum < 2  &&
                 ptPoly4.x > dLenX - EPS_SMALL  &&  ptPoly4.x < dLenX + dDeltaX + EPS_SMALL && 
                 dDeltaX * abs( ptPoly4.z) < dDeltaX * dLenZ + dDeltaZ * ( ptPoly4.x - dLenX) + dDeltaX * EPS_SMALL) {

               if ( nIntNum == 0) {
                  ptInt1 = ptPoly4 ;
                  vtN1 = vtIF ; 
                  ++ nIntNum ;
               }
               else if ( ( ptInt1 - ptPoly4).SqLen() > SQ_EPS_SMALL) {
                  ptInt2 = ptPoly4 ;
                  vtN2 = vtIF ;
                  ++ nIntNum ;
               }
            }
         }

        // Intersezione con la quinta faccia
         if ( abs( vtPoly * vtUD) > COS_ORTO_ANG_ZERO) {
            if ( nIntNum < 2  &&
                 ptPoly5.y >= 0  &&  ptPoly5.y <= dLenY  &&
                 abs( ptPoly5.z) <= dLenZ) {

               if ( nIntNum == 0) {
                  ptInt1 = ptPoly5 ;
                  vtN1 = vtUD ;
                  ++ nIntNum ;
               }
               else if ( ( ptInt1 - ptPoly5).SqLen() > SQ_EPS_SMALL) {
                  ptInt2 = ptPoly5 ;
                  vtN2 = vtUD ;
                  ++ nIntNum ;
               }
            }
         }

        // Intersezione con la sesta faccia
         if ( abs( vtPoly * vtUD) > COS_ORTO_ANG_ZERO) {
            if ( nIntNum < 2  &&
                 ptPoly6.y >= dDeltaY  &&  ptPoly6.y <= dLenY + dDeltaY  &&
                 abs( ptPoly6.z) <= dLenZ + dDeltaZ) {

               if ( nIntNum == 0) {
                  ptInt1 = ptPoly6;
                  vtN1 = - vtUD ;
                  ++ nIntNum ;
               }
               else if ( ( ptInt1 - ptPoly6).SqLen() > SQ_EPS_SMALL) {
                  ptInt2 = ptPoly6;
                  vtN2 = - vtUD ;
                  ++ nIntNum ;
               }
            }
         }
        // Se il poliedro è attraversato, aggiungo
         if ( nIntNum == 2) {

           // Riporto le intersezioni nel sistema griglia
            ptInt1.ToGlob( PolyFrame) ;
            vtN1.ToGlob( PolyFrame) ;
            ptInt2.ToGlob( PolyFrame) ;
            vtN2.ToGlob( PolyFrame) ;

            AddIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, CurrTool.GetToolNum()) ;
         }
      }
   }
   return true ;
}

//----------------------------------------------------------------------------
bool
VolZmap::AddingSphere( int nGrid, const Point3d& ptS, const Point3d& ptE, double dRad)
{
  // Controllo utensile
   if ( m_nCurrTool < 0  ||  m_nCurrTool >= int( m_vTool.size()))
      return false ;
   Tool& CurrTool = m_vTool[m_nCurrTool] ;

   // Verifico interferisca
   int nStartI, nStartJ, nEndI, nEndJ ;
   if ( ! TestCompoBBox( nGrid, ptS, ptE, V_NULL, V_NULL, dRad, 0, 0, nStartI, nStartJ, nEndI, nEndJ))
      return true ;
  // Vettore movimento
   Vector3d vtV = ptE - ptS ;
   double dLengthPath = vtV.Len() ;
   if ( dLengthPath > EPS_ZERO)
      vtV /= dLengthPath ;
  // Riferimento per cilindro inviluppo della sfera lungo il movimento
   Frame3d CylFrame ;
   if ( ! CylFrame.Set( ptS, vtV))
      return false ;

   double dSqRad = dRad * dRad ;

   for ( int i = nStartI ; i <= nEndI ; ++ i) {
      for ( int j = nStartJ ; j <= nEndJ ; ++ j) {

         double dX = ( i + 0.5) * m_dStep ;
         double dY = ( j + 0.5) * m_dStep ;
         Point3d ptC( dX, dY, 0) ;

        // Sfera in posizione start
         double dStSqDXY = SqDistXY( ptC, ptS) ;
         if ( dStSqDXY < dSqRad) {
            double dMin = ptS.z - sqrt( dSqRad - dStSqDXY) ;
            Vector3d vtNmin = Point3d( dX, dY, dMin) - ptS ;
            vtNmin.Normalize() ;
            double dMax = ptS.z + sqrt( dSqRad - dStSqDXY) ;
            Vector3d vtNmax = Point3d( dX, dY, dMax) - ptS ;
            vtNmax.Normalize() ;
            AddIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
         }

        // Sfera in posizione end
         double dEnSqDXY = SqDistXY( ptC, ptE) ;
         if ( dEnSqDXY < dSqRad) {
            double dMin = ptE.z - sqrt( dSqRad - dEnSqDXY) ;
            Vector3d vtNmin = Point3d( dX, dY, dMin) - ptE ;
            vtNmin.Normalize() ;
            double dMax = ptE.z + sqrt( dSqRad - dEnSqDXY) ;
            Vector3d vtNmax = Point3d( dX, dY, dMax) - ptE ;
            vtNmax.Normalize() ;
            AddIntervals( nGrid, i, j, dMin, dMax, vtNmin, vtNmax, CurrTool.GetToolNum()) ;
         }

        // Cilindro inviluppo della sfera
         Point3d ptInt1, ptInt2 ;
         Vector3d vtN1, vtN2 ;
         if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dLengthPath, dRad, false, false, ptInt1, vtN1, ptInt2, vtN2)) {
            AddIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, - vtN1, - vtN2, CurrTool.GetToolNum()) ;
         }
      }
   }

   return true ;
}