EgtGeomKernel :

- prima versione dell'offset 3d (da correggere).

AdjustLoops.cpp

@@ -151,11 +151,11 @@ MyAdjustLoops( ICurve* pCurve, ICURVEPLIST& CrvLst)
          else {
             double dParA = vIccInfo[i].IciA[0].dU ;
             double dParB = vIccInfo[i].IciB[0].dU ;
-            if ( abs( dParA - dEnd) < EPS_SMALL)
+            if ( dParA > dParB)
                swap( dParA, dParB) ;
            // verifico se uno dei due intervalli dà origine ad un tratto trascurabile
             PtrOwner<ICurve> pCrv1( pMyCrv->CopyParamRange( dParA, dParB)) ;
-            PtrOwner<ICurve> pCrv2( pMyCrv->CopyParamRange( dParB, dParA)) ;           
+            PtrOwner<ICurve> pCrv2( pMyCrv->CopyParamRange( dParB, dParA)) ;
             double dArea1 = 0, dArea2 = 0 ;
             if ( ! IsNull( pCrv1))
                pCrv1->GetAreaXY( dArea1) ;

CAvSimpleSurfFrMove.cpp

@@ -140,16 +140,20 @@ MyCAvSimpleSurfFrMove::Translate( const Vector3d& vtDir, double& dLen)
                   if ( scInfoCurr.nType == SCI_LINE_LINE  ||  scInfoCurr.nType == SCI_PNT_LINE) {
                      m_SCollInfo = scInfoCurr ;
                      m_SCollInfo.nChunkM = j ;
+                     m_SCollInfo.nLoopM = 0 ;
                      m_SCollInfo.nCrvM = k ;
                      m_SCollInfo.nChunkF = i ;
+                     m_SCollInfo.nLoopF = 0 ;
                      m_SCollInfo.nCrvF = l ;
                   }
                }
                else if ( dNewLenXY < dPrevLenXY) {
                   m_SCollInfo = scInfoCurr ;
                   m_SCollInfo.nChunkM = j ;
+                  m_SCollInfo.nLoopM = 0 ;
                   m_SCollInfo.nCrvM = k ;
                   m_SCollInfo.nChunkF = i ;
+                  m_SCollInfo.nLoopF = 0 ;
                   m_SCollInfo.nCrvF = l ;
                }
                pCrv2 = ( pCompo2 != nullptr ? pCompo2->GetNextCurve() : nullptr) ;

CAvSimpleSurfFrMove.h

@@ -30,7 +30,7 @@ class MyCAvSimpleSurfFrMove
       const SCollInfo& GetSCollInfo()
                { return m_SCollInfo ;}
 
-   private :
+   protected :
       bool TranslateCurveNoCollisionCurve( const ICurve* pCrv1, const ICurve* pCrv2,
                                            const Vector3d& vtDir, double& dLen, SCollInfo& scInfo) ;
       bool TranslateLineNoCollisionLine( const CurveLine* pLine1, const CurveLine* pLine2,
@@ -40,7 +40,7 @@ class MyCAvSimpleSurfFrMove
       bool RotateLineNoCollisionLine( const CurveLine* pLine1, const CurveLine* pLine2,
                                       const Point3d& ptCen, double& dAng) ;
 
-   private :
+   protected :
       const SurfFlatRegion* m_pRegM ;
       const SurfFlatRegion* m_pRegF ;
       SCollInfo m_SCollInfo ;

CAvSurfFrMove.cpp

@@ -0,0 +1,257 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2026-2026
+//----------------------------------------------------------------------------
+// File : CASurfFrMove.cpp   Data : 26.03.2026     Versione : 3.1c7
+// Contenuto : Implementazione delle funzioni di movimento per SurfFlatRegion
+//             senza collisione con altri oggetti dello stesso tipo e nello
+//             stesso piano o in piani paralleli.
+//
+//
+// Modifiche : 26.03.2026 RE Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+//--------------------------- Include ----------------------------------------
+#include "stdafx.h"
+#include "CAvSurfFrMove.h"
+#include "SurfFlatRegion.h"
+#include "CurveLine.h"
+#include "CurveArc.h"
+#include "CurveComposite.h"
+#include "IntersLineArc.h"
+#include "GeoConst.h"
+#include "/EgtDev/Include/EGkCAvSurfFrMove.h"
+#include "/EgtDev/Include/EgtPointerOwner.h"
+
+using namespace std ;
+
+//----------------------------------------------------------------------------
+// CASurfFrMove
+//----------------------------------------------------------------------------
+CAvSurfFrMove::CAvSurfFrMove( const ISurfFlatRegion& SfrM, const ISurfFlatRegion& SfrF)
+{
+  // salvo puntatori alle regioni
+   m_pRegM = &SfrM ;
+   m_pRegF = &SfrF ;
+}
+
+//----------------------------------------------------------------------------
+bool
+CAvSurfFrMove::Translate( const Vector3d& vtDir, double& dLen)
+{
+   MyCAvSurfFrMove ScdMove( *m_pRegM, *m_pRegF) ;
+   m_CollInfo.nType = SCI_NONE ;
+   if ( ! ScdMove.Translate( vtDir, dLen))
+      return false ;
+   m_CollInfo = ScdMove.GetCollInfo() ;
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+CAvSurfFrMove::Rotate( const Point3d& ptCen, double& dAng)
+{
+   MyCAvSurfFrMove ScdMove( *m_pRegM, *m_pRegF) ;
+   m_CollInfo.nType = SCI_NONE ;
+   return ScdMove.Rotate( ptCen, dAng) ;
+}
+
+//----------------------------------------------------------------------------
+bool
+MyCAvSurfFrMove::Translate( const Vector3d& vtDir, double& dLen)
+{
+  // verifico validità regioni
+   if ( m_pRegM == nullptr  ||  m_pRegF == nullptr)
+      return false ;
+
+  // verifico che le due regioni giacciano in piani paralleli
+   if ( ! AreSameVectorApprox( m_pRegM->m_frF.VersZ(), m_pRegF->m_frF.VersZ()))
+      return false ;
+
+  // reset info di collisione
+   m_SCollInfo.nType = SCI_NONE ;
+
+  // porto il vettore di movimento nel riferimento intrinseco e ne annullo la componente Z
+   Vector3d vtDirL = vtDir ;
+   vtDirL.ToLoc( m_pRegM->m_frF) ;
+   vtDirL.z = 0 ;
+   double dLenXY = vtDirL.Len() ;
+   if ( dLenXY < EPS_SMALL)
+      return true ;
+   vtDirL /= dLenXY ;
+   dLenXY *= dLen ;
+   double dNewLenXY = dLenXY ;
+
+  // ciclo sui chunk della seconda superficie
+   for ( int nCF = 0 ; nCF < m_pRegF->GetChunkCount() ; ++ nCF) {
+     // ciclo sui bordi dei chunk
+      for ( int nLF = 0 ; nLF < m_pRegF->GetLoopCount( nCF) ; ++ nLF) {
+
+        // curva corrente del chunk della seconda regione in locale nel riferimento intrinseco della prima
+         const ICurve* pCrv2Loc = nullptr ;
+         PtrOwner<ICurve> pCopyCrv ;
+         if ( AreSameFrame( m_pRegM->m_frF, m_pRegF->m_frF))
+            pCrv2Loc = m_pRegF->GetMyLoop( nCF, nLF) ;
+         else {
+            pCopyCrv.Set( m_pRegF->GetMyLoop( nCF, nLF)->Clone()) ;
+            if ( IsNull( pCopyCrv))
+               return false ;
+            pCopyCrv->LocToLoc( m_pRegF->m_frF, m_pRegM->m_frF) ;
+            pCrv2Loc = pCopyCrv ;
+         }
+         const CurveComposite* pCompo2 = GetBasicCurveComposite( pCrv2Loc) ;
+
+        // ciclo sui chunk della prima superficie
+         for ( int nCM = 0 ; nCM < m_pRegM->GetChunkCount() ; ++ nCM) {
+           // ciclo sui bordi del chunk
+            for ( int nLM = 0 ; nLM < m_pRegM->GetLoopCount( nCM) ; ++ nLM) {
+
+              // per CAv non ha senso confrontare due loop interni tra di loro.
+              // posso confrontatare - due loop esterni (come per la CAvSimpleSurfFrMove)
+              //                     - un loop esterno con uno interno (nel caso in cui un Chunk sia contenuto dentro un isola)
+               if ( nLF > 0  &&  nLM > 0)
+                  continue ;
+
+              // curva corrente del chunk della prima regione (ovviamente già in locale al riferimento intrinseco)
+               const ICurve* pCrv1Loc = m_pRegM->GetMyLoop( nCM, nLM) ;
+               const CurveComposite* pCompo1 = GetBasicCurveComposite( pCrv1Loc) ;
+
+              // verifico la collisione tra le entità dei loop esterni dei due chunk
+               int k = 0 ;
+               const ICurve* pCrv1 = ( pCompo1 != nullptr ? pCompo1->GetFirstCurve() : pCrv1Loc) ;
+               while ( pCrv1 != nullptr) {
+                  int l = 0 ;
+                  const ICurve* pCrv2 = ( pCompo2 != nullptr ? pCompo2->GetFirstCurve() : pCrv2Loc) ;
+                  while ( pCrv2 != nullptr) {
+                     SCollInfo cInfoCurr ;
+                     double dPrevLenXY = dNewLenXY ;
+                     if ( ! TranslateCurveNoCollisionCurve( pCrv1, pCrv2, vtDirL, dNewLenXY, cInfoCurr))
+                        return false ;
+                     if ( abs( dNewLenXY - dPrevLenXY) < EPS_SMALL) {
+                        if ( cInfoCurr.nType == SCI_LINE_LINE  ||  cInfoCurr.nType == SCI_PNT_LINE) {
+                           m_SCollInfo = cInfoCurr ;
+                           m_SCollInfo.nChunkM = nCM ;
+                           m_SCollInfo.nLoopM = nLM ;
+                           m_SCollInfo.nCrvM = k ;
+                           m_SCollInfo.nChunkF = nCF ;
+                           m_SCollInfo.nLoopF = nLF ;
+                           m_SCollInfo.nCrvF = l ;
+                        }
+                     }
+                     else if ( dNewLenXY < dPrevLenXY) {
+                        m_SCollInfo = cInfoCurr ;
+                        m_SCollInfo.nChunkM = nCM ;
+                        m_SCollInfo.nLoopM = nLM ;
+                        m_SCollInfo.nCrvM = k ;
+                        m_SCollInfo.nChunkF = nCF ;
+                        m_SCollInfo.nLoopF = nLF ;
+                        m_SCollInfo.nCrvF = l ;
+                     }
+                     pCrv2 = ( pCompo2 != nullptr ? pCompo2->GetNextCurve() : nullptr) ;
+                     ++ l ;
+                  }
+                  pCrv1 = ( pCompo1 != nullptr ? pCompo1->GetNextCurve() : nullptr) ;
+                  ++ k ;
+               }
+            }
+         }
+      }
+   }
+
+  // se da limitare il movimento
+   if ( dNewLenXY < dLenXY - EPS_SMALL)
+      dLen *= dNewLenXY / dLenXY ;
+
+  // porto i punti e le direzioni di SCollInfo da intrinseco a locale della prima regione
+   if ( m_SCollInfo.nType != SCI_NONE) {
+      m_SCollInfo.ptP1.ToGlob( m_pRegM->m_frF) ;
+      m_SCollInfo.vtDirM.ToGlob( m_pRegM->m_frF) ;
+      m_SCollInfo.vtDirF.ToGlob( m_pRegM->m_frF) ;
+   }
+   if ( m_SCollInfo.nType == SCI_LINE_LINE)
+      m_SCollInfo.ptP2.ToGlob( m_pRegM->m_frF) ;
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+MyCAvSurfFrMove::Rotate( const Point3d& ptCen, double& dAng)
+{
+  // verifico validità regioni
+   if ( m_pRegM == nullptr  ||  m_pRegF == nullptr)
+      return false ;
+
+  // verifico che le due regioni giacciano in piani paralleli
+   if ( ! AreSameVectorApprox( m_pRegM->m_frF.VersZ(), m_pRegF->m_frF.VersZ()))
+      return false ;
+
+  // reset info di collisione
+   m_SCollInfo.nType = SCI_NONE ;
+
+  // porto il centro di rotazione nel riferimento intrinseco e ne annullo la componente Z
+   Point3d ptCenL = ptCen ;
+   ptCenL.ToLoc( m_pRegM->m_frF) ;
+   ptCenL.z = 0 ;
+   if ( abs( dAng) < EPS_ANG_SMALL)
+      return true ;
+   double dNewAng = dAng ;
+
+  // ciclo sui chunk della seconda superficie
+   for ( int nCF = 0 ; nCF < m_pRegF->GetChunkCount() ; ++ nCF) {
+     // ciclo sui bordi del Chunk
+      for ( int nLF = 0 ; nLF < m_pRegF->GetLoopCount( nCF) ; ++ nLF) {
+
+        // curva corrente del chunk della seconda regione in locale nel riferimento intrinseco della prima
+         const ICurve* pCrv2Loc = nullptr ;
+         PtrOwner<ICurve> pCopyCrv ;
+         if ( AreSameFrame( m_pRegM->m_frF, m_pRegF->m_frF))
+            pCrv2Loc = m_pRegF->GetMyLoop( nCF, nLF) ;
+         else {
+            pCopyCrv.Set( m_pRegF->GetMyLoop( nCF, nLF)->Clone()) ;
+            if ( IsNull( pCopyCrv))
+               return false ;
+            pCopyCrv->LocToLoc( m_pRegF->m_frF, m_pRegM->m_frF) ;
+            pCrv2Loc = pCopyCrv ;
+         }
+         const CurveComposite* pCompo2 = GetBasicCurveComposite( pCrv2Loc) ;
+
+        // ciclo sui chunk della prima superficie
+         for ( int nCM = 0 ; nCM < m_pRegM->GetChunkCount() ; ++ nCM) {
+           // ciclo sui bordi del chunk
+            for ( int nLM = 0 ; nLM < m_pRegM->GetLoopCount( nCM) ; ++ nLM) {
+
+              // per CAv non ha senso confrontare due loop interni tra di loro.
+              // posso confrontatare - due loop esterni (come per la CAvSimpleSurfFrMove)
+              //                     - un loop esterno con uno interno (nel caso in cui un Chunk sia contenuto dentro un isola)
+               if ( nLF > 0  &&  nLM > 0)
+                  continue ;
+
+              // curva esterna del chunk della prima regione (ovviamente già in locale al riferimento intrinseco)
+               const ICurve* pCrv1Loc = m_pRegM->GetMyLoop( nCM, nLM) ;
+               const CurveComposite* pCompo1 = GetBasicCurveComposite( pCrv1Loc) ;
+
+              // verifico la collisione tra le entità dei loop esterni dei due chunk
+               const ICurve* pCrv1 = ( pCompo1 != nullptr ? pCompo1->GetFirstCurve() : pCrv1Loc) ;
+               while ( pCrv1 != nullptr) {
+                  const ICurve* pCrv2 = ( pCompo2 != nullptr ? pCompo2->GetFirstCurve() : pCrv2Loc) ;
+                  while ( pCrv2 != nullptr) {
+                     if ( ! RotateCurveNoCollisionCurve( pCrv1, pCrv2, ptCenL, dNewAng))
+                        return false ;
+                     pCrv2 = ( pCompo2 != nullptr ? pCompo2->GetNextCurve() : nullptr) ;
+                  }
+                  pCrv1 = ( pCompo1 != nullptr ? pCompo1->GetNextCurve() : nullptr) ;
+               }
+            }
+         }
+      }
+   }
+
+  // se da limitare il movimento
+   if ( ( dAng > 0  &&  dNewAng < dAng - EPS_ANG_SMALL)  ||
+        ( dAng < 0  &&  dNewAng > dAng + EPS_ANG_SMALL))
+      dAng = dNewAng ;
+
+   return true ;
+}

CAvSurfFrMove.h

@@ -0,0 +1,29 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2015-2018
+//----------------------------------------------------------------------------
+// File : CAvSurfFrMove.h      Data : 27.04.18    Versione : 3.1c7
+// Contenuto : Dich.ne classe privata per movimento di superfici flat region
+//             nel loro piano evitando collisioni
+//
+// Modifiche : 26.03.2026 RE Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#pragma once
+
+#include "CAvSimpleSurfFrMove.h"
+
+//----------------------------------------------------------------------------
+class MyCAvSurfFrMove : public MyCAvSimpleSurfFrMove
+{
+   public :
+      MyCAvSurfFrMove( const ISurfFlatRegion& SfrM, const ISurfFlatRegion& SfrF) :
+         MyCAvSimpleSurfFrMove( SfrM, SfrF) {} ;
+
+   public :
+      bool Translate( const Vector3d& vtDir, double& dLen) ;
+      bool Rotate( const Point3d& ptCen, double& dAng) ;
+      const SCollInfo& GetCollInfo()
+               { return m_SCollInfo ; }
+} ;

CAvToolTriangle.cpp

@@ -2440,12 +2440,10 @@ CAvDiskTriangle( const Point3d& ptDiskCen, const Vector3d& vtDiskAx, double dDis
      // Allontanamento dall'interno
       double dEscapeDist = max( DiskTriaInteriorEscapeDistGenMot( ptDiskCen, vtDiskAx, dDiskRad, trTria, vtMove), 0.) ;
      // Allontanamento dalla frontiera
-      Vector3d vtMoveOrt = vtMove - vtMove * vtDiskAx * vtDiskAx ;   
+      Vector3d vtMoveOrt = OrthoCompo( vtMove, vtDiskAx) ;
       vtMoveOrt.Normalize() ;
       Frame3d DiskFrame ;
-      Vector3d vtJ = vtDiskAx ^ vtMoveOrt ;
-      vtJ.Normalize() ;
-      DiskFrame.Set( ptDiskCen, vtMoveOrt, vtJ, vtDiskAx) ;
+      DiskFrame.Set( ptDiskCen, vtDiskAx, vtMoveOrt) ;
       Triangle3d trTriaLoc = trTria ;
       Vector3d vtMoveLoc = vtMove ;
       trTriaLoc.ToLoc( DiskFrame) ;

ChainCurves.cpp

@@ -169,7 +169,7 @@ ChainCurves::GetChainFromPoint( const Point3d& ptStart, const Vector3d& vtStart,
       ptCurr = bEquiv ? m_vCrvData[nId].ptEnd : m_vCrvData[nId].ptStart ;
       vtCurr = bEquiv ? m_vCrvData[nId].vtEnd : - m_vCrvData[nId].vtStart ;
      // verifico se sono arrivato al punto di chiusura
-      if ( AreSamePointEpsilon( ptCurr, ptStop, m_dToler)) {
+      if ( AreSamePointEpsilon( ptCurr, ptStop, 0.5 * EPS_SMALL)) {
          bStopped = true ;
          break ;
       }

CurveAux.cpp

@@ -25,19 +25,24 @@
 #include "IntersLineLine.h"
 #include "/EgtDev/Include/EGkDistPointCurve.h"
 #include "/EgtDev/Include/EGkStringUtils3d.h"
-#include "/EgtDev/Include/EgtNumUtils.h"
 #include "/EgtDev/Include/EGkUiUnits.h"
-#include "/EgtDev/Include/EgtPointerOwner.h"
+#include "/EgtDev/Include/EGkIntersCurvePlane.h"
 #include "/EgtDev/Include/EGkCurveByInterp.h"
 #include "/EgtDev/Include/EGkChainCurves.h"
+#include "/EgtDev/Include/EgtNumUtils.h"
+#include "/EgtDev/Include/EgtPointerOwner.h"
 #define EIGEN_NO_IO
 #include "/EgtDev/Extern/Eigen/Dense"
 
 #define SAVEAPPROX 0
 #define SAVECURVEPASSED 0
 #define SAVELINEARAPPROX 0
-#if SAVEAPPROX  || SAVECURVEPASSED  ||  SAVELINEARAPPROX
+#define SAVESYNCLINES 0
+#if SAVEAPPROX  || SAVECURVEPASSED  ||  SAVELINEARAPPROX  || SAVESYNCLINES
+#include "/EgtDev/Include/EGkGeoPoint3d.h"
    static int nCrvPassed = 0 ;
+   std::vector<IGeoObj*> VT ;
+   std::vector<Color> VC ;
    #include "/EgtDev/Include/EGkGeoObjSave.h"
 #endif
 
@@ -1595,8 +1600,10 @@ FitWithBezier( const ICurve* pCrvOrig, const PNTVECTOR& vPnt, DBLVECTOR& vParam,
 
 //----------------------------------------------------------------------------
 ICurve*
-ApproxCurveWithBezier( const ICurve* pCrv , double dTol)
+ApproxCurveWithBezier( const ICurve* pCrv , double dTol, const Vector3d& vtStart, const Vector3d& vtEnd)
 {
+   if ( pCrv == nullptr  ||  ! pCrv->IsValid())
+      return nullptr ;
 
 #if SAVECURVEPASSED
    SaveGeoObj( pCrv->Clone(), "D:\\Temp\\bezier\\approxWithBezier\\CurveDaApprossimare\\"+ToString(nCrvPassed) + ".nge") ;
@@ -1668,6 +1675,10 @@ ApproxCurveWithBezier( const ICurve* pCrv , double dTol)
    VCT3DVECTOR vPrevDer ;
    VCT3DVECTOR vNextDer ;
    ComputeAkimaTangents( false, vParam, vPnt, vPrevDer, vNextDer) ;
+   if ( ! AreSameVectorExact(vtStart, V_NULL)) {
+      vNextDer[0] = vtStart ;
+      vPrevDer.back() = vtEnd ;
+   }
 
    int nOverSampling = ssize( vPntOverSampling) ;
    vParam.resize( nOverSampling) ;
@@ -1718,7 +1729,11 @@ CalcApproxError( const ICurve* pCrvOri, const ICurve* pCrvNew, double& dErr, int
    // controllo l'errore effettivo campionando più finemente
    double dLenOri = 0 ; pCrvOri->GetLength( dLenOri) ;
    double dLenNew = 0 ; pCrvNew->GetLength( dLenNew) ;
-   dErr = 0 ;
+   Point3d ptStart0 ; pCrvOri->GetStartPoint( ptStart0) ;
+   Point3d ptStart1 ; pCrvNew->GetStartPoint( ptStart1) ;
+   Point3d ptEnd0 ; pCrvOri->GetEndPoint( ptEnd0) ;
+   Point3d ptEnd1 ; pCrvNew->GetEndPoint( ptEnd1) ;
+   dErr = max( Dist( ptStart1, ptStart0), Dist( ptEnd1, ptEnd0)) ; 
    for ( int i = 1 ; i < nPoints ; ++i) {
       Point3d ptOri, ptNew ;
       double dParOri, dParNew ;
@@ -2687,3 +2702,156 @@ GetChainedCurves( ICRVCOMPOPOVECTOR& vCrv, double dChainTol, bool bAllowInvert)
    }
    return true ;
 }
+
+//----------------------------------------------------------------------------
+double
+CalcWeightVal( double dLen, const ICurve* pCrv, const Vector3d vtCurr1, const Point3d& ptCurr1, double dCoeff, double dMyDist, double& dUStep2)
+{
+   pCrv->GetParamAtLength( dLen, dUStep2) ;
+   Point3d ptStep2 ; Vector3d vtStep2 = V_NULL ;
+   pCrv->GetPointD1D2( dUStep2, ICurve::FROM_MINUS, ptStep2, &vtStep2) ; vtStep2.Normalize() ;
+   double dStepCos2 = vtCurr1 * vtStep2 ;
+   double dDist = Dist( ptCurr1, ptStep2) ;
+   return (1 - dStepCos2) + dCoeff * dDist / dMyDist ;
+}
+
+//----------------------------------------------------------------------------
+bool
+GetIsoPointOnSecondCurve( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2, double dUCurr1, double& dUCurr2, double dMyDist, double dUPrev2,
+                          double dLenPrev2, double& dLenCurr2, double dLen2)
+{
+   Point3d ptCurr1 ;
+   Vector3d vtCurr1 ;
+   pCrvEdge1->GetPointD1D2( dUCurr1, ICurve::FROM_MINUS, ptCurr1, &vtCurr1) ;
+   vtCurr1.Normalize() ;
+   // --- Piano di taglio per punto a minima distanza
+   IntersCurvePlane ICP( *pCrvEdge2, ptCurr1, vtCurr1) ;
+   int nIndParCloser = - 1, nIndPointCloser = -1 ;
+   double dSqMinDist = INFINITO ;
+   for ( int nInfo = 0 ; nInfo < ICP.GetIntersCount() ; ++ nInfo) {
+      IntCrvPlnInfo aInfo ;
+      if ( ICP.GetIntCrvPlnInfo( nInfo, aInfo)  &&  aInfo.Ici[0].dU > dUPrev2) {
+         if ( nIndParCloser == -1)
+            nIndParCloser = nInfo ;
+         double dSqDist = SqDist( ptCurr1, aInfo.Ici[0].ptI) ;
+         if ( dSqDist < dSqMinDist) {
+            dSqMinDist = dSqDist ;
+            nIndPointCloser = nInfo ;
+         }
+      }
+   }
+   bool bOkPlane = ( nIndParCloser != -1  &&  nIndPointCloser != -1) ;
+   if ( bOkPlane) {
+      // Se gli indici sono tra loro coerenti allora ho individuato il punto
+      if ( nIndParCloser == nIndPointCloser) {
+         IntCrvPlnInfo aInfo ;
+         ICP.GetIntCrvPlnInfo( nIndParCloser, aInfo) ;
+         dUCurr2 = aInfo.Ici[0].dU ;
+      }
+      // Se gli indici sono discordi, devo scegliere quale dei due punti tenere
+      else {
+         // scelgo il punto più vicino al corrente
+         IntCrvPlnInfo aInfoPt, aInfoPar ;
+         ICP.GetIntCrvPlnInfo( nIndPointCloser, aInfoPt) ;
+         ICP.GetIntCrvPlnInfo( nIndParCloser, aInfoPar) ;
+         dUCurr2 = ( SqDist( ptCurr1, aInfoPt.Ici[0].ptI) < SqDist( ptCurr1, aInfoPar.Ici[0].ptI) ?
+            aInfoPt.Ici[0].dU : aInfoPar.Ici[0].dU) ;
+#if SAVESYNCLINES
+         VT.clear() ; VC.clear() ;
+         VT.emplace_back( pCrvEdge1->Clone()) ; VC.emplace_back( Color( 0, 128, 255)) ;
+         VT.emplace_back( pCrvEdge2->Clone()) ; VC.emplace_back( Color( 0, 128, 255)) ;
+         PtrOwner<IGeoPoint3d> ptCurr1Geo( CreateGeoPoint3d()) ; ptCurr1Geo->Set( ptCurr1) ;
+         VT.emplace_back( Release( ptCurr1Geo)) ; VC.emplace_back( BLUE) ;
+         PtrOwner<IGeoPoint3d> ptPar( CreateGeoPoint3d()) ; ptPar->Set( aInfoPar.Ici[0].ptI) ;
+         PtrOwner<IGeoPoint3d> ptPt( CreateGeoPoint3d()) ; ptPt->Set( aInfoPt.Ici[0].ptI) ;
+         VT.emplace_back( Release( ptPar)) ; VC.emplace_back( LIME) ;
+         VT.emplace_back( Release( ptPt)) ; VC.emplace_back( FUCHSIA) ;
+         SaveGeoObj( VT, VC, "C:\\Temp\\bezier\\ruled\\TestTrimmingPlane.nge") ;
+#endif
+      }
+      // Verifico di non essermi allontanato troppo
+      double dLen ; pCrvEdge2->GetLengthAtParam( dUCurr2, dLen) ;
+      bOkPlane = ( dLen < dLenPrev2 + 2. * dMyDist) ;
+   }
+   if ( ! bOkPlane) {
+      // --- Altrimenti, cerco il punto a minima distanza
+      DistPointCurve DPC( ptCurr1, *pCrvEdge2) ;
+      int nFlag ;
+      bool bOkMinDist = ( DPC.GetParamAtMinDistPoint( dUPrev2, dUCurr2, nFlag)  &&  dUCurr2 > dUPrev2) ;
+      // Verifico di non essermi allontanato troppo
+      if ( bOkMinDist) {
+         double dLen ; pCrvEdge2->GetLengthAtParam( dUCurr2, dLen) ;
+         bOkMinDist = ( dLen < dLenPrev2 + 2. * dMyDist) ;
+      }
+      if ( ! bOkMinDist) {
+         // --- Aumento la distanza corrente del passo di campionamento
+         double dLen = Clamp( dLenPrev2 + dMyDist, 0., dLen2) ;
+         pCrvEdge2->GetParamAtLength( dLen, dUCurr2) ;
+      }
+   }
+
+   // Recupero il punto corrente e la direzione tangente sul secondo bordo
+   pCrvEdge2->GetLengthAtParam( dUCurr2, dLenCurr2) ;
+   Point3d ptCurr2 ;
+   Vector3d vtCurr2 ;
+   pCrvEdge2->GetPointD1D2( dUCurr2, ICurve::FROM_MINUS, ptCurr2, &vtCurr2) ;
+   vtCurr2.Normalize() ;
+
+   // Verifico se le direzioni tangenti sono tra di loro circa parallele
+   const double COS_ANG_TOL = cos( 15. * DEGTORAD) ;
+   const double COS_SMALL_ANG_TOL = cos( 4. * DEGTORAD) ;
+   double dSearchLen = dMyDist / 2 ;
+   int NUM_STEP = 10 ;
+   const double dCoeff = 0.1 ;
+   double dCos = vtCurr1 * vtCurr2 ;
+   double dDistCurr = Dist( ptCurr1, ptCurr2) ;
+   double dMin = (1 - dCos) + dCoeff * dDistCurr / dMyDist ;
+   double bUpdated = false ;
+   // se poco fuori tolleranza controllo se ho un punto abbastanza vicino con la stessa tangente
+   if ( vtCurr1 * vtCurr2 < COS_SMALL_ANG_TOL) {
+      // Se tanto fuori dalla tolleranza, recupero il miglior versore tangente sul secondo bordo nell'intervallo successivo di lunghezza ( 2. * dMyDist)
+      if ( vtCurr1 * vtCurr2 < COS_ANG_TOL) {
+         dSearchLen = dMyDist ;
+         NUM_STEP = 20 ;
+      }
+      pCrvEdge2->GetLengthAtPoint( ptCurr2, dLenCurr2) ;
+      double dLimInfLen2 = Clamp( dLenCurr2 - dSearchLen, dLenPrev2, dLen2) ;
+      double dLimSupLen2 = Clamp( dLenCurr2 + dSearchLen, dLenPrev2, dLen2) ;
+
+      // faccio un campionamento grossolano e poi campiono più finemente in prossimità dei minimi
+      DBLVECTOR vVal ;
+      for ( int i = 0 ; i <= NUM_STEP ; ++ i) {
+         double dLen = dLimInfLen2 + i * ( dLimSupLen2 - dLimInfLen2) / NUM_STEP ;
+         double dUStep2 ;
+         vVal.push_back( CalcWeightVal( dLen, pCrvEdge2, vtCurr1, ptCurr1, dCoeff, dMyDist, dUStep2)) ;
+         if ( vVal.back() < dMin) {
+            dMin = vVal.back() ;
+            dUCurr2 = dUStep2 ;
+         }
+      }
+      DBLDBLVECTOR vInterv ;
+      for ( int i = 1 ; i < ssize(vVal) - 1 ; ++i) {
+         if ( vVal[i] < vVal[i-1]  && vVal[i] < vVal[i+1])
+            vInterv.emplace_back( dLimInfLen2 + ( i - 1) * ( dLimSupLen2 - dLimInfLen2) / NUM_STEP,
+                                  dLimInfLen2 + ( i + 1) * ( dLimSupLen2 - dLimInfLen2) / NUM_STEP) ;
+      }
+      if ( ssize( vInterv) != 0) {
+         for ( int j = 0 ; j < ssize( vInterv) ; ++j) {
+            for ( int i = 0 ; i <= NUM_STEP ; ++ i) {
+               double dLen = vInterv[j].first + i * ( vInterv[j].second - vInterv[j].first) / NUM_STEP ;
+               double dUStep2 ;
+               double dVal = CalcWeightVal( dLen, pCrvEdge2, vtCurr1, ptCurr1, dCoeff, dMyDist, dUStep2) ;
+               if ( dVal < dMin) {
+                  dUCurr2 = dUStep2 ;
+                  dMin = dVal ;
+                  bUpdated = true ;
+               }
+            }
+         }
+      }
+   }
+   // se il parametro è cambiato devo ricalcolare la lunghezza, che viene restituita
+   if ( bUpdated)
+      pCrvEdge2->GetLengthAtParam( dUCurr2, dLenCurr2) ;
+   return true ;
+}

CurveAux.h

@@ -35,4 +35,4 @@ bool CopyExtrusion( const ICurve* pSouCrv, ICurve* pDestCrv) ;
 bool CopyThickness( const ICurve* pSouCrv, ICurve* pDestCrv) ;
 ICurveBezier* ApproxCurveBezierWithSingleCubic( const ICurve* pCrv) ;
 Voronoi* GetCurveVoronoi( const ICurve& crvC) ;
-bool GetChainedCurves( ICRVCOMPOPOVECTOR& vCrv, double dChainTol, bool bAllowInvert) ;
+bool GetChainedCurves( ICRVCOMPOPOVECTOR& vCrv, double dChainTol, bool bAllowInvert) ;

CurveComposite.cpp

@@ -1967,7 +1967,120 @@ CurveComposite::AddJoint( double dU)
 
 //----------------------------------------------------------------------------
 bool
-CurveComposite::ModifyJoint( int nU, const Point3d& ptNewJoint)
+CurveComposite::ModifyJoint( int nU, const Point3d& ptNewJoint, double dTol)
+{
+   int nCrvCount = GetCurveCount() ;
+   // verifico l'indice della giunzione
+   if ( nU < 0  ||  nU > nCrvCount)
+      return false ;
+  // salvo le vecchie curve e nel caso le ripristino
+   int nPrevCrv = -1 ;
+  // recupero l'indice e il puntatore alla curva precedente (se esiste)
+   if ( nU >= 0)
+      nPrevCrv = nU - 1 ;
+   else if ( IsClosed())
+      nPrevCrv = nCrvCount - 1 ;
+   PtrOwner<CurveComposite> pOrigCrv( CreateBasicCurveComposite()) ;
+   if ( nPrevCrv >= 0)
+      pOrigCrv->AddCurve( m_CrvSmplS[ nPrevCrv]->Clone()) ;
+  // recupero il puntatore alla curva successiva (se esiste)
+   int nNextCrv = -1 ;
+   if ( nU < nCrvCount)
+      nNextCrv = nU ;
+   else if ( IsClosed())
+      nNextCrv = 0 ;
+   else
+      nNextCrv = - 1 ;
+   if ( nNextCrv >= 0)
+      pOrigCrv->AddCurve( m_CrvSmplS[ nNextCrv]->Clone()) ;
+
+   int nCrvNmbr = GetCurveCount() ;
+   int nFlagDel = DeletedCurve::NONE ;
+   if ( ! ModifyJoint( nU, ptNewJoint, &nFlagDel))
+      return false ;
+
+   bool bErasedSomeCrv = nCrvCount > GetCurveCount() ;
+   bool bErasedPrev = ( nFlagDel == DeletedCurve::PREV) ;
+   bool bErasedNext = ( nFlagDel == DeletedCurve::NEXT) ;
+   if ( ( bErasedPrev && nNextCrv == -1)  ||  ( bErasedNext && nPrevCrv == -1)) {
+      // se sono su un estremo di una curva aperta e ho cancellato la sottocurva di estremità devo verificare che fosse più piccola della tolleranza
+      if ( bErasedPrev && nNextCrv == -1) {
+         Point3d ptOrigEnd ; pOrigCrv->GetEndPoint( ptOrigEnd) ;
+         Point3d ptNewEnd ; GetEndPoint( ptNewEnd) ;
+         if ( Dist( ptOrigEnd, ptNewEnd) > dTol)
+            m_CrvSmplS.push_back( Release( pOrigCrv)) ;
+         return true ;
+      }
+      if ( bErasedNext && nPrevCrv == -1) {
+         Point3d ptOrigStart ; pOrigCrv->GetStartPoint( ptOrigStart) ;
+         Point3d ptNewStart ; GetStartPoint( ptNewStart) ;
+         if ( Dist( ptOrigStart, ptNewStart) > dTol)
+            m_CrvSmplS.insert( m_CrvSmplS.begin(), Release( pOrigCrv)) ;
+         return true ;
+      }
+   }
+   double dStart ;
+   double dEnd ;
+   if ( bErasedPrev) {
+      dStart = nU ;
+      dEnd = nNextCrv + 1 ;
+   }
+   else if ( bErasedNext) {
+      dStart = nPrevCrv ;
+      dEnd = nU ;
+      if ( nU == 0)
+         dStart -= 1 ;
+   }
+   else { //  ! bErasedSomeCrv
+      dStart = ( nPrevCrv != -1 ? nPrevCrv : 0) ;
+      dEnd = ( nNextCrv != -1 ? nNextCrv + 1 : nCrvNmbr) ;
+   }
+   PtrOwner<ICurve> pNewCurve( CopyParamRange( dStart, dEnd)) ;
+   double dErr = 0 ;
+   if ( ! CalcApproxError( pOrigCrv, pNewCurve, dErr, 6)  ||  dErr > dTol) {
+      // se ho fallito il check o la variazione è superiore alla tolleranza richiesta, ripristino le curve originali
+      if ( ! bErasedSomeCrv) {
+         if ( nNextCrv != -1) {
+            delete m_CrvSmplS[nNextCrv] ;
+            m_CrvSmplS[nNextCrv] = pOrigCrv->RemoveFirstOrLastCurve( true) ;
+         }
+         if ( nPrevCrv != -1) {
+            delete m_CrvSmplS[nPrevCrv] ;
+            m_CrvSmplS[nPrevCrv] = pOrigCrv->RemoveFirstOrLastCurve( true) ;
+         }
+      }
+      else {
+         if ( bErasedNext) {
+            int nPos = nU == 0 ? nPrevCrv - 1 : nU ;
+            delete m_CrvSmplS[nPos] ;
+            if ( nU == 0) {
+               m_CrvSmplS[nPos] = pOrigCrv->RemoveFirstOrLastCurve( false) ;
+               nPos = 0 ;
+            }
+            else
+               m_CrvSmplS[nPos] = pOrigCrv->RemoveFirstOrLastCurve( true) ;
+            m_CrvSmplS.insert( m_CrvSmplS.begin() + nPos, pOrigCrv->RemoveFirstOrLastCurve( true)) ;
+         }
+         else {
+            int nPos = nU == 0 ? nU : nPrevCrv ;
+            delete m_CrvSmplS[nPos] ;
+            if ( nU == 0) {
+               m_CrvSmplS[nPos] = pOrigCrv->RemoveFirstOrLastCurve( true) ;
+               nPos = nCrvNmbr - 1 ;
+            }
+            else
+               m_CrvSmplS[nPos] = pOrigCrv->RemoveFirstOrLastCurve( true) ;
+            m_CrvSmplS.insert( m_CrvSmplS.begin() + nPos, pOrigCrv->RemoveFirstOrLastCurve( true)) ;
+         }
+      }
+   }
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+CurveComposite::ModifyJoint( int nU, const Point3d& ptNewJoint, int* pnFlagDel)
 {
   // verifico lo stato
    if ( m_nStatus != OK)
@@ -1977,6 +2090,8 @@ CurveComposite::ModifyJoint( int nU, const Point3d& ptNewJoint)
   // verifico l'indice della giunzione
    if ( nU < 0  ||  nU > nCrvCount)
       return false ;
+   if ( pnFlagDel != nullptr)
+      *pnFlagDel = DeletedCurve::NONE ;
   // recupero l'indice e il puntatore alla curva precedente (se esiste)
    int nPrevCrv = -1 ;
    if ( nU > 0)
@@ -2005,6 +2120,8 @@ CurveComposite::ModifyJoint( int nU, const Point3d& ptNewJoint)
       if ( AreSamePointApprox( ptStart, ptNewJoint)) {
          delete pPrevCrv ;
          m_CrvSmplS.erase( m_CrvSmplS.begin() + nPrevCrv) ;
+         if ( pnFlagDel != nullptr)
+            *pnFlagDel = DeletedCurve::PREV ;
       }
      // altrimenti diventa un segmento di retta
       else {
@@ -2024,6 +2141,8 @@ CurveComposite::ModifyJoint( int nU, const Point3d& ptNewJoint)
       if ( AreSamePointApprox( ptNewJoint, ptEnd)) {
          delete pNextCrv ;
          m_CrvSmplS.erase( m_CrvSmplS.begin() + nNextCrv) ;
+         if ( pnFlagDel != nullptr)
+            *pnFlagDel = DeletedCurve::NEXT ;
       }
      // altrimenti diventa un segmento di retta
       else {
@@ -3858,3 +3977,49 @@ CurveComposite::GetOnlyPoint(Point3d& ptStart) const
    ptStart = m_ptStart ;
    return true ;
 }
+
+//----------------------------------------------------------------------------
+bool
+CurveComposite::ReplaceSingleCurve( int nSubCrv, ICurve* pNewCurveToAdd, double dTolStartEnd, double dTolAlong)
+{
+   // prendo il possesso e verifico la curva
+   PtrOwner<ICurve> pNewCurve( pNewCurveToAdd) ;
+   if ( IsNull( pNewCurve)  ||  ! pNewCurve->IsValid())
+      return false ;
+
+   // verifico lo stato
+   if ( m_nStatus != OK)
+      return false ;
+
+   // verifico l'indice sia sensato
+   if ( nSubCrv < 0 || nSubCrv > GetCurveCount())
+      return false ;
+
+   // verifico che start e end coincidano entro la tolleranza
+   Point3d ptStart ; m_CrvSmplS[nSubCrv]->GetStartPoint( ptStart) ;
+   Point3d ptEnd ; m_CrvSmplS[nSubCrv]->GetEndPoint( ptEnd) ;
+   Point3d ptNewStart ; pNewCurve->GetStartPoint( ptNewStart) ;
+   Point3d ptNewEnd ; pNewCurve->GetEndPoint( ptNewEnd) ;
+   if ( ! AreSamePointApprox( ptStart, ptNewStart)  ||  ! AreSamePointApprox( ptEnd, ptNewEnd)) {
+      // se i punti di inizio e fine non sono entro EPS_SMALL ma sono entro la tolleranza passata allora modifico la curva da aggiungere
+      if ( AreSamePointEpsilon( ptStart, ptNewStart, dTolStartEnd)  &&  AreSamePointEpsilon( ptEnd, ptNewEnd, dTolStartEnd)) {
+         if ( ! pNewCurve->ModifyStart( ptStart)  || ! pNewCurve->ModifyEnd( ptEnd))
+            return false ;
+      }
+      else
+         return false ;
+   }
+
+   // se presente una tolleranza lungo la curva controllo che sia rispettata
+   if ( dTolAlong < INFINITO) {
+      double dErr = 0 ;
+      CalcApproxError( m_CrvSmplS[nSubCrv], pNewCurve, dErr, 20) ;
+      if ( dErr > dTolAlong)
+         return false ;
+   }
+
+   delete m_CrvSmplS[nSubCrv] ;
+   m_CrvSmplS[nSubCrv] = Release( pNewCurve) ;
+
+   return true ;
+}

CurveComposite.h

@@ -26,6 +26,9 @@ class Voronoi ;
 //----------------------------------------------------------------------------
 class CurveComposite : public ICurveComposite, public IGeoObjRW
 {
+   public :
+      enum  DeletedCurve { NONE = 0, PREV = 1, NEXT = 2 } ;
+
    public :                      // IGeoObj
       ~CurveComposite( void) override ;
       CurveComposite* Clone( void) const override ;
@@ -156,7 +159,9 @@ class CurveComposite : public ICurveComposite, public IGeoObjRW
       bool AddArc2P( const Point3d& ptOther, const Point3d& ptNew, bool bEndOrStart = true) override ;
       bool AddArcTg( const Point3d& ptNew, bool bEndOrStart = true) override ;
       bool AddJoint( double dU) override ;
-      bool ModifyJoint( int nU, const Point3d& ptNewJoint) override ;
+      bool ModifyJoint( int nU, const Point3d& ptNewJoint) override
+               { return ModifyJoint( nU, ptNewJoint, nullptr) ; }
+      bool ModifyJoint( int nU, const Point3d& ptNewJoint, double dTol) override ; // verifico se le curve interessate sono in tolleranza con la versione prima della modifica
       bool RemoveJoint( int nU) override ;
       bool MoveCurve( int nCrv, const Vector3d& vtMove) override ;
       bool ModifyCurveToArc( int nCrv, const Point3d& ptMid) override ;
@@ -178,6 +183,7 @@ class CurveComposite : public ICurveComposite, public IGeoObjRW
       bool SetCurveTempParam( int nCrv, double dParam, int nParamInd = 0) override ;
       bool GetCurveTempParam( int nCrv, double& dParam, int nParamInd = 0) const override ;
       bool GetOnlyPoint( Point3d& ptStart) const override ;
+      bool ReplaceSingleCurve( int nSubCrv, ICurve* pNewCurve, double dTolStartEnd, double dTolAlong = INFINITO) override ;
       
    public :                      // IGeoObjRW
       int GetNgeId( void) const override ;
@@ -211,6 +217,7 @@ class CurveComposite : public ICurveComposite, public IGeoObjRW
       bool SimpleOffsetXY( double dDist, int nType = OFF_FILLET, double dMaxAngExt = ANG_RIGHT) ;
       bool IsOneCircle( Point3d& ptCen, Vector3d& vtN, double& dRad, bool& bCCW) const ;      
       bool CalcVoronoiObject( void) const ;
+      bool ModifyJoint( int nU, const Point3d& ptNewJoint, int* pnFlagDel) ;
 
    private :
       enum Status { ERR = 0, OK = 1, TO_VERIFY = 2, IS_A_POINT = 3} ;

EgtGeomKernel.vcxproj

@@ -284,6 +284,7 @@ copy $(TargetPath) \EgtProg\Dll64</Command>
     <ClCompile Include="CalcDerivate.cpp" />
     <ClCompile Include="CAvSilhouetteSurfTm.cpp" />
     <ClCompile Include="CAvSimpleSurfFrMove.cpp" />
+    <ClCompile Include="CAvSurfFrMove.cpp" />
     <ClCompile Include="CAvToolSurfTm.cpp" />
     <ClCompile Include="CAvToolTriangle.cpp" />
     <ClCompile Include="CDeBoxClosedSurfTm.cpp" />
@@ -323,6 +324,7 @@ copy $(TargetPath) \EgtProg\Dll64</Command>
     <ClCompile Include="IntersLineVolZmap.cpp" />
     <ClCompile Include="IntersPlaneVolZmap.cpp" />
     <ClCompile Include="IntersLineSurfBez.cpp" />
+    <ClCompile Include="OffsetCurve3d.cpp" />
     <ClCompile Include="Trimming.cpp" />
     <ClCompile Include="MultiGeomDB.cpp" />
     <ClCompile Include="SurfTriMeshOffset.cpp" />
@@ -353,6 +355,7 @@ copy $(TargetPath) \EgtProg\Dll64</Command>
     <ClInclude Include="..\Include\EGkSubtractProjectedFacesOnStmFace.h" />
     <ClInclude Include="..\Include\EGkSurfTriMeshAux.h" />
     <ClInclude Include="CAvSilhouetteSurfTm.h" />
+    <ClInclude Include="CAvSurfFrMove.h" />
     <ClInclude Include="CDeBoxTria.h" />
     <ClInclude Include="CDeCapsTria.h" />
     <ClInclude Include="CDeConeFrustumTria.h" />

EgtGeomKernel.vcxproj.filters

@@ -570,6 +570,15 @@
     <ClCompile Include="CalcDerivate.cpp">
       <Filter>File di origine\Geo</Filter>
     </ClCompile>
+    <ClCompile Include="CAvSurfFrMove.cpp">
+      <Filter>File di origine\GeoCollisionAvoid</Filter>
+    </ClCompile>
+    <ClCompile Include="Trimming.cpp">
+      <Filter>File di origine\GeoStriping</Filter>
+    </ClCompile>
+    <ClCompile Include="OffsetCurve3d.cpp">
+      <Filter>File di origine\GeoOffset</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="stdafx.h">
@@ -1256,6 +1265,9 @@
     <ClInclude Include="..\Include\EGkMultiGeomDB.h">
       <Filter>File di intestazione\Include</Filter>
     </ClInclude>
+    <ClInclude Include="CAvSurfFrMove.h">
+      <Filter>File di intestazione</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="EgtGeomKernel.rc">

IntersCrvCompoCrvCompo.cpp

@@ -198,13 +198,16 @@ IntersCrvCompoCrvCompo::IntersCrvCompoCrvCompo( const ICurveComposite& CCompoA,
               // se coincidono U e ptInt tra A e B
                if ( abs( m_Info[i].IciA[0].dU - m_Info[j].IciB[0].dU) < EPS_SMALL  &&
                     AreSamePointXYEpsilon( m_Info[i].IciA[0].ptI, m_Info[j].IciB[0].ptI, 10 * EPS_SMALL)) {
-                 // se non è alla fine di curva chiusa 
-                  if ( ! bCrvAClosed  ||  abs( m_Info[j].IciA[0].dU - dCrvBSpan) > EPS_SMALL)
-                    // elimino la seconda
-                     EraseOtherInfo( i, j) ;
-                  else
-                    // elimino la prima
+                 // se j è alla fine di curva chiusa
+                 // se j è alla fine di curva chiusa e la prima intersezione è di overlap con partenza dall'inizio ( compreso nel caso precedente)
+                 // oppure se i è all'inizio di curva chiusa e l'intersezione successiva a j è di overlap con lo stesso parametro
+                  if ( bCrvAClosed  &&  (( abs( m_Info[j].IciA[0].dU - dCrvBSpan) < EPS_SMALL)  ||
+                                    ( i == 0  &&  ssize(m_Info) > 2 &&  m_Info[i].IciA[0].dU < EPS_SMALL &&  m_Info[j+1].bOverlap &&  abs( m_Info[j].IciA[0].dU - m_Info[j+1].IciA[0].dU) < EPS_SMALL)))
+                     // elimino la prima
                      EraseCurrentInfo( i, j) ;
+                  else
+                     // elimino la seconda
+                     EraseOtherInfo( i, j) ;
                   break ;
                }
             }
@@ -394,7 +397,6 @@ IntersCrvCompoCrvCompo::IntersCrvCompoCrvCompo( const ICurveComposite& CCompoA,
          }
         // caso NULL-NULL per corrente di prima curva
          else if ( m_Info[i].IciA[ki].nPrevTy == ICCT_NULL  &&  m_Info[i].IciA[ki].nNextTy == ICCT_NULL) {
-            m_Info[j].IciA[kj].nNextTy = ICCT_NULL ;
             if ( m_Info[j].IciB[kj].nNextTy == ICCT_NULL)
                m_Info[j].IciB[kj].nNextTy = m_Info[i].IciB[ki].nNextTy ;
             if ( m_Info[j].IciB[kj].nPrevTy == ICCT_NULL)
@@ -404,7 +406,6 @@ IntersCrvCompoCrvCompo::IntersCrvCompoCrvCompo( const ICurveComposite& CCompoA,
          }
         // caso NULL-NULL per precedente di prima curva
          else if ( m_Info[j].IciA[kj].nPrevTy == ICCT_NULL  &&  m_Info[j].IciA[kj].nNextTy == ICCT_NULL) {
-            m_Info[i].IciA[ki].nPrevTy = ICCT_NULL ;
             if ( m_Info[i].IciB[ki].nPrevTy == ICCT_NULL)
                m_Info[i].IciB[ki].nPrevTy = m_Info[j].IciB[kj].nPrevTy ;
             if ( m_Info[i].IciB[ki].nNextTy == ICCT_NULL)
@@ -571,7 +572,6 @@ IntersCrvCompoCrvCompo::IntersCrvCompoCrvCompo( const ICurveComposite& CCompoA,
          }
         // caso NULL-NULL per corrente di seconda curva
          else if ( m_Info[i].IciB[ki].nPrevTy == ICCT_NULL  &&  m_Info[i].IciB[ki].nNextTy == ICCT_NULL) {
-            m_Info[j].IciB[kj].nNextTy = ICCT_NULL ;
             if ( m_Info[j].IciA[kj].nNextTy == ICCT_NULL)
                m_Info[j].IciA[kj].nNextTy = m_Info[i].IciA[ki].nNextTy ;
             if ( m_Info[j].IciA[kj].nPrevTy == ICCT_NULL)
@@ -581,7 +581,6 @@ IntersCrvCompoCrvCompo::IntersCrvCompoCrvCompo( const ICurveComposite& CCompoA,
          }
         // caso NULL-NULL per precedente di seconda curva
          else if ( m_Info[j].IciB[kj].nPrevTy == ICCT_NULL  &&  m_Info[j].IciB[kj].nNextTy == ICCT_NULL) {
-            m_Info[i].IciB[ki].nPrevTy = ICCT_NULL ;
             if ( m_Info[i].IciA[ki].nPrevTy == ICCT_NULL)
                m_Info[i].IciA[ki].nPrevTy = m_Info[j].IciA[kj].nPrevTy ;
             if ( m_Info[i].IciA[ki].nNextTy == ICCT_NULL)
@@ -806,19 +805,36 @@ IntersCrvCompoCrvCompo::IntersCrvCompoCrvCompo( const ICurveComposite& CCompoA,
       INTVECTOR vNewOverlap ;
       // salvo eventuali incoerenze col precedente
       for ( int i = bCrvAClosed ? 0 : 1 ; i < m_nNumInters ; ++i) {
-         int j = i == 0 ? m_nNumInters - 1 : i - 1 ;
-         int kj = m_Info[j].bOverlap ? 1 : 0 ;
+         int j = ( i == 0 ? m_nNumInters - 1 : i - 1) ;
+         int kj = ( m_Info[j].bOverlap ? 1 : 0) ;
+         bool bSpike = m_Info[i].bOverlap  &&  m_Info[j].bOverlap  &&  m_Info[i].bCBOverEq != m_Info[j].bCBOverEq ;
+         if ( bSpike) {
+            bSpike = abs( m_Info[i].IciA[0].dU - m_Info[j].IciA[0].dU) < EPS_PARAM || 
+                     abs( m_Info[i].IciA[0].dU - m_Info[j].IciA[1].dU) < EPS_PARAM || 
+                     abs( m_Info[i].IciA[1].dU - m_Info[j].IciA[0].dU) < EPS_PARAM ||
+                     abs( m_Info[i].IciA[1].dU - m_Info[j].IciA[1].dU) < EPS_PARAM ;
+         }
          if ( (m_Info[j].IciA[kj].nNextTy == ICCT_NULL  ||  m_Info[i].IciA[0].nPrevTy  == ICCT_NULL  ||  m_Info[j].IciA[kj].nNextTy != m_Info[i].IciA[0].nPrevTy) &&
                m_Info[j].IciA[kj].nNextTy != ICCT_SPK  &&  m_Info[i].IciA[0].nPrevTy != ICCT_SPK) {
-            vIncoherenceWithPrev.push_back( i) ;
+            if ( vIncoherenceWithPrev.empty() || vIncoherenceWithPrev.back() != i)
+               vIncoherenceWithPrev.push_back( i) ;
+            if ( bSpike) {
+               // se ho uno spike sistemo anche il successivo
+               int k = i == m_nNumInters - 1 ? -1 : i + 1 ;
+               if ( k == -1  &&  bCrvAClosed)
+                  k = 0 ;
+
+               if ( k != -1)
+                  vIncoherenceWithPrev.push_back( k) ;
+            }
             bCoherent = false ;
          }
       }
       // incoerenze sulla curva A
       if ( ! bCoherent) {
          for ( int i : vIncoherenceWithPrev) {
-            int j = i == 0 ? m_nNumInters - 1 : i - 1 ;
-            int kj = m_Info[j].bOverlap ? 1 : 0 ;
+            int j = ( i == 0 ? m_nNumInters - 1 : i - 1) ;
+            int kj = ( m_Info[j].bOverlap ? 1 : 0) ;
             int nType = 0 ;
             CalcSide( j, i, &CCompoA, &CCompoB, true, nType) ;
             if ( nType != ICCT_ON) {
@@ -840,21 +856,38 @@ IntersCrvCompoCrvCompo::IntersCrvCompoCrvCompo( const ICurveComposite& CCompoA,
       vIncoherenceWithPrev.clear() ;
       // salvo eventuali incoerenze col precedente
       for ( int i = bCrvBClosed ? 0 : 1 ; i < m_nNumInters ; ++i) {
-         int j = i == 0 ? m_nNumInters - 1 : i - 1 ;
-         int ki = m_Info[i].bOverlap && ! m_Info[i].bCBOverEq ? 1 : 0 ;
-         int kj = m_Info[j].bOverlap && m_Info[j].bCBOverEq ? 1 : 0 ;
+         int j = ( i == 0 ? m_nNumInters - 1 : i - 1) ;
+         int ki = ( m_Info[i].bOverlap && ! m_Info[i].bCBOverEq ? 1 : 0) ;
+         int kj = ( m_Info[j].bOverlap && m_Info[j].bCBOverEq ? 1 : 0) ;
+         bool bSpike = m_Info[i].bOverlap  &&  m_Info[j].bOverlap  &&  m_Info[i].bCBOverEq != m_Info[j].bCBOverEq ;
+         if ( bSpike) {
+            bSpike = abs( m_Info[i].IciA[0].dU - m_Info[j].IciA[0].dU) < EPS_PARAM || 
+                     abs( m_Info[i].IciA[0].dU - m_Info[j].IciA[1].dU) < EPS_PARAM || 
+                     abs( m_Info[i].IciA[1].dU - m_Info[j].IciA[0].dU) < EPS_PARAM ||
+                     abs( m_Info[i].IciA[1].dU - m_Info[j].IciA[1].dU) < EPS_PARAM ;
+         }
          if ( ( m_Info[j].IciB[kj].nNextTy == ICCT_NULL ||  m_Info[i].IciB[ki].nPrevTy == ICCT_NULL  ||  m_Info[j].IciB[kj].nNextTy != m_Info[i].IciB[ki].nPrevTy)  &&
               m_Info[j].IciB[kj].nNextTy != ICCT_SPK  && m_Info[i].IciB[ki].nPrevTy != ICCT_SPK) {
-            vIncoherenceWithPrev.push_back( i) ;
+            if ( vIncoherenceWithPrev.empty() || vIncoherenceWithPrev.back() != i)
+               vIncoherenceWithPrev.push_back( i) ;
+            if ( bSpike) {
+               // se ho uno spike sistemo anche il successivo
+               int k = ( i == m_nNumInters - 1 ? -1 : i + 1) ;
+               if ( k == -1  &&  bCrvBClosed)
+                  k = 0 ;
+
+               if ( k != -1)
+                  vIncoherenceWithPrev.push_back( k) ;
+            }
             bCoherent = false ;
          }
       }
       // incoerenze sulla curva B
       if ( ! bCoherent) {
          for ( int i : vIncoherenceWithPrev) {
-            int j = i == 0 ? m_nNumInters - 1 : i - 1 ;
-            int ki = m_Info[i].bOverlap && ! m_Info[i].bCBOverEq ? 1 : 0 ;
-            int kj = m_Info[j].bOverlap && m_Info[j].bCBOverEq ? 1 : 0 ;
+            int j = ( i == 0 ? m_nNumInters - 1 : i - 1) ;
+            int ki = ( m_Info[i].bOverlap && !m_Info[i].bCBOverEq ? 1 : 0) ;
+            int kj = ( m_Info[j].bOverlap && m_Info[j].bCBOverEq ? 1 : 0) ;
             int nType = 0 ;
             CalcSide( j, i, &CCompoB, &CCompoA, false, nType) ;
             if ( nType != ICCT_ON) {
@@ -886,13 +919,19 @@ IntersCrvCompoCrvCompo::CalcSide( int j, int i,const ICurve* pThisCrv, const ICu
    const IntCrvCrvInfo& Icci1 = m_Info[j] ;
    const IntCrvCrvInfo& Icci2 = m_Info[i] ;
    // calcolo tra l'intersezione 1 e 2 se la curva sta dentro o fuori
-   int kj = Icci1.bOverlap ? 1 : 0 ;
+   int ki = 0 ;
+   int kj = ( Icci1.bOverlap ? 1 : 0) ;
+   if ( ! bCrvAOrB) {
+      ki = ( m_Info[i].bOverlap && !m_Info[i].bCBOverEq ? 1 : 0) ;
+      kj = ( m_Info[j].bOverlap && m_Info[j].bCBOverEq ? 1 : 0) ;
+   }
+
    double dU = 0 ;
    bool bPrevIsBefore = true ;
    if ( bCrvAOrB) {
       // se precedente minore del successivo faccio la media
-      if ( Icci1.IciA[kj].dU < Icci2.IciA[0].dU)
-         dU = ( Icci2.IciA[0].dU + Icci1.IciA[kj].dU) / 2 ;
+      if ( Icci1.IciA[kj].dU < Icci2.IciA[ki].dU)
+         dU = ( Icci2.IciA[ki].dU + Icci1.IciA[kj].dU) / 2 ;
       // altrimenti guardo tra lo start e il successivo
       else {
          bPrevIsBefore = false ;
@@ -908,8 +947,8 @@ IntersCrvCompoCrvCompo::CalcSide( int j, int i,const ICurve* pThisCrv, const ICu
    }
    else {
       // se precedente minore del successivo faccio la media
-      if ( Icci1.IciB[kj].dU < Icci2.IciB[0].dU)
-         dU = ( Icci2.IciB[0].dU + Icci1.IciB[kj].dU) / 2 ;
+      if ( Icci1.IciB[kj].dU < Icci2.IciB[ki].dU)
+         dU = ( Icci2.IciB[ki].dU + Icci1.IciB[kj].dU) / 2 ;
       // altrimenti guardi tra lo start e il successivo
       else {
          bPrevIsBefore = false ;
@@ -937,24 +976,24 @@ IntersCrvCompoCrvCompo::CalcSide( int j, int i,const ICurve* pThisCrv, const ICu
       bool bIsOn = false ;
       if ( bCrvAOrB) {
          if ( bPrevIsBefore) {
-            vdU[0] = ( 1 - dFactor) * Icci2.IciA[0].dU + dFactor * Icci1.IciA[kj].dU ;
-            vdU[1] = ( 1 - 2 * dFactor) * Icci2.IciA[0].dU + 2 * dFactor * Icci1.IciA[kj].dU ;
+            vdU[0] = ( 1 - dFactor) * Icci2.IciA[ki].dU + dFactor * Icci1.IciA[kj].dU ;
+            vdU[1] = ( 1 - 2 * dFactor) * Icci2.IciA[ki].dU + 2 * dFactor * Icci1.IciA[kj].dU ;
          }
-         else if ( Icci2.IciA[0].dU > 2 * EPS_SMALL){
-            vdU[0] = ( Icci2.IciA[0].dU + 0.) * dFactor ;
-            vdU[1] = ( Icci2.IciA[0].dU + 0.) * 2 * dFactor ;
+         else if ( Icci2.IciA[ki].dU > 2 * EPS_SMALL){
+            vdU[0] = ( Icci2.IciA[ki].dU + 0.) * dFactor ;
+            vdU[1] = ( Icci2.IciA[ki].dU + 0.) * 2 * dFactor ;
          }
          else
             bIsOn = true ;
       }
       else {
          if ( bPrevIsBefore) {
-            vdU[0] = ( 1 - dFactor) * Icci2.IciB[0].dU + dFactor * Icci1.IciB[kj].dU ;
-            vdU[1] = ( 1 - 2 * dFactor) * Icci2.IciB[0].dU + 2 * dFactor * Icci1.IciB[kj].dU ;
+            vdU[0] = ( 1 - dFactor) * Icci2.IciB[ki].dU + dFactor * Icci1.IciB[kj].dU ;
+            vdU[1] = ( 1 - 2 * dFactor) * Icci2.IciB[ki].dU + 2 * dFactor * Icci1.IciB[kj].dU ;
          }
-         else if ( Icci2.IciB[0].dU > 2 * EPS_SMALL) {
-            vdU[0] = ( Icci2.IciB[0].dU + 0.) * dFactor ;
-            vdU[1] = ( Icci2.IciB[0].dU + 0.) * 2 * dFactor ;
+         else if ( Icci2.IciB[ki].dU > 2 * EPS_SMALL) {
+            vdU[0] = ( Icci2.IciB[ki].dU + 0.) * dFactor ;
+            vdU[1] = ( Icci2.IciB[ki].dU + 0.) * 2 * dFactor ;
          }
          else
             bIsOn = true ;
@@ -1023,8 +1062,11 @@ IntersCrvCompoCrvCompo::CalcSide( int j, int i,const ICurve* pThisCrv, const ICu
 bool
 IntersCrvCompoCrvCompo::MergeNewOverlap( int i, bool bCrvAOrB)
 {
+   if ( i >= ssize(m_Info))
+      return false ;
+
    // faccio il merge col precedente
-   int j = i == 0 ? m_nNumInters - 1 : i - 1 ;
+   int j = ( i == 0 ? m_nNumInters - 1 : i - 1) ;
    if ( m_Info[j].bOverlap) {
       m_Info[i].IciA[0] = m_Info[j].IciA[0] ;
       m_Info[i].IciB[0] = m_Info[j].IciB[0] ;
@@ -1163,21 +1205,25 @@ SortGreaterB( const IntCrvCrvInfo& aInfo1, const IntCrvCrvInfo& aInfo2)
    dU1 = aInfo1.IciB[0].dU ;
    if ( aInfo1.bOverlap) {
      // caso normale
-      if ( aInfo1.IciB[0].dU < aInfo1.IciB[1].dU)
+      if ( ( aInfo1.bCBOverEq  &&  aInfo1.IciB[0].dU < aInfo1.IciB[1].dU) || ( ! aInfo1.bCBOverEq  &&  aInfo1.IciB[0].dU > aInfo1.IciB[1].dU))
          dU1 = 0.5 * ( aInfo1.IciB[0].dU + aInfo1.IciB[1].dU) ;
      // a cavallo di fine / inizio
-      else
+      else if ( aInfo1.bCBOverEq)
          dU1 = aInfo1.IciB[0].dU + SPAN_PARAM ;
+      else
+         dU1 = aInfo1.IciB[1].dU + SPAN_PARAM ;
    } 
   // determino il secondo termine del confronto
    dU2 = aInfo2.IciB[0].dU ;
    if ( aInfo2.bOverlap) {
      // caso normale
-      if ( aInfo2.IciB[0].dU < aInfo2.IciB[1].dU)
+      if ( ( aInfo2.bCBOverEq  &&  aInfo2.IciB[0].dU < aInfo2.IciB[1].dU)  ||  ( ! aInfo2.bCBOverEq  &&  aInfo2.IciB[0].dU > aInfo2.IciB[1].dU))
          dU2 = 0.5 * ( aInfo2.IciB[0].dU + aInfo2.IciB[1].dU) ;
      // a cavallo di fine / inizio
-      else
+      else if ( aInfo2.bCBOverEq)
          dU2 = aInfo2.IciB[0].dU + SPAN_PARAM ;
+      else
+         dU2 = aInfo2.IciB[1].dU + SPAN_PARAM ;
    } 
 
    return ( dU2 > dU1 + EPS_PARAM) ;

IntersCurveCurve.cpp

@@ -576,9 +576,25 @@ IntersCurveCurve::CalcCurveClassification( const ICurve* pCurve, const ICCIVECTO
       }
    }
   // costruisco il vettore delle classificazioni
-   for ( int i = 0 ; i < nNumInters ; ++ i) {
+   for ( int i = 0 ; i < nNumInters ; ++ i) { 
      // se è definito un tratto precedente
       double dLenU ; pCurve->GetLengthAtParam( InfoCorr[i].IciA[0].dU, dLenU) ;
+      /*int j = i < nNumInters - 1 ? i + 1 : -1 ;
+      if ( pCurve->IsClosed()  &&  j == - 1)
+         j = 0 ;*/
+      int j = i == 0 ? -1 : i - 1 ;
+      if ( pCurve->IsClosed()  &&  j == - 1)
+         j = nNumInters - 1 ;
+      bool bSpike = false ;
+      if ( j != -1) {
+         bSpike = InfoCorr[i].bOverlap  &&  InfoCorr[j].bOverlap  &&  InfoCorr[i].bCBOverEq != InfoCorr[j].bCBOverEq ;
+         if ( bSpike) {
+            bSpike = abs( InfoCorr[i].IciA[0].dU - InfoCorr[j].IciA[0].dU) < EPS_PARAM || 
+                     abs( InfoCorr[i].IciA[0].dU - InfoCorr[j].IciA[1].dU) < EPS_PARAM || 
+                     abs( InfoCorr[i].IciA[1].dU - InfoCorr[j].IciA[0].dU) < EPS_PARAM ||
+                     abs( InfoCorr[i].IciA[1].dU - InfoCorr[j].IciA[1].dU) < EPS_PARAM ;
+         }
+      }
       if ( InfoCorr[i].IciA[0].dU > dCurrPar + EPS_PARAM  &&  dLenU - dCurrLen > dLenMin) {
         // verifico che la definizione sul tratto sia omogenea e valida
          int nPrevTy = InfoCorr[i].IciA[0].nPrevTy ;
@@ -610,7 +626,11 @@ IntersCurveCurve::CalcCurveClassification( const ICurve* pCurve, const ICCIVECTO
         // salvo dati correnti
          dCurrPar = InfoCorr[i].IciA[1].dU ;
          dCurrLen = dLenU ;
-         nLastTy = InfoCorr[i].IciA[1].nNextTy ;
+         // se sono in un caso di spike devo trattare l'overlap in modo diverso
+         if ( ! bSpike)
+            nLastTy = InfoCorr[i].IciA[1].nNextTy ;
+         else
+            nLastTy = InfoCorr[i].IciA[0].nPrevTy ;
       }
    }
   // eventuale tratto finale rimasto
@@ -736,7 +756,7 @@ IntersCurveCurve::GetCurveOutClass( const ICurve* pCurve, int& nClass)
    double dArea ;
    if ( ! pCurve->GetAreaXY( dArea))
       return false ;
-   nClass = (( dArea > 0) ? CRVC_OUT : CRVC_IN) ;
+   nClass = (( dArea >= 0) ? CRVC_OUT : CRVC_IN) ;
    return true ;
 }
 

IntersCurvePlane.cpp

@@ -235,6 +235,16 @@ IntersCurvePlane::GetIntersCount( void)
    return m_nIntersCount ;
 }
 
+//----------------------------------------------------------------------------
+bool
+IntersCurvePlane::GetIntCrvPlnInfo( int nInd, IntCrvPlnInfo& aInfo)
+{
+   if ( nInd < 0  ||  nInd >= m_nIntersCount)
+      return false ;
+   aInfo = m_Info[nInd] ;
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 IntersCurvePlane::GetIntersPointNearTo( const Point3d& ptNear, Point3d& ptI, double& dParam)

IntersLineCyl.cpp

@@ -15,6 +15,7 @@
 #include "stdafx.h"
 #include "IntersLineCyl.h"
 #include "/EgtDev/Include/EGkFrame3d.h"
+#include "/EgtDev/Include/EGkIntersLineCylinder.h"
 #include "/EgtDev/Include/ENkPolynomialRoots.h"
 
 using namespace std ;
@@ -25,99 +26,176 @@ using namespace std ;
 // In caso di intersezione viene restituito true e i parametri in dU1 e dU2.
 //----------------------------------------------------------------------------
 bool
-IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
-               double dRad, double dHeight,
-               double& dU1, double& dU2)
+IntersLineCyl( const Point3d& ptP, const Vector3d& vtV, double dH, double dRad, bool bTapLow, bool bTapUp,
+               double& dU1, Point3d& ptInt1, Vector3d& vtN1, double& dU2, Point3d& ptInt2, Vector3d& vtN2, bool bIgnoreTap, bool bInvertNormals)
 {
-  // Verifico il versore
-   if ( vtL.IsSmall())
+   dU1 = NAN ;
+   dU2 = NAN ;
+
+   // Verifico il versore
+   if ( vtV.IsSmall())
       return false ;
 
-  // Verifico il cilindro
-   if ( dRad < EPS_SMALL  ||  dHeight < EPS_SMALL)
+   // Verifico il cilindro
+   if ( dRad < EPS_SMALL  ||  dH < EPS_SMALL)
       return false ;
 
-  // Determino le eventuali intersezioni con le due basi a quota minima e massima (solo se linea non parallela ad esse)
+   // Determino le eventuali intersezioni con le due basi a quota minima e massima (solo se linea non parallela ad esse)
    int nBasInt = 0 ;
-   if ( abs( vtL.z) > EPS_ZERO) {
+   if ( abs( vtV.z) > EPS_ZERO) {
       // le linee tangenti al cilindro non sono considerate intersecanti
-      double EpsRad = ( vtL.IsZeroXY() ? - EPS_SMALL : EPS_SMALL) ;
-      Point3d ptInt1 = ptL + ( ( 0 - ptL.z) / vtL.z) * vtL ;
-      if ( ptInt1.x * ptInt1.x + ptInt1.y * ptInt1.y < dRad * dRad + 2 * dRad * EpsRad) {
-         dU1 = ( ptInt1 - ptL) * vtL ;
+      double dEpsRad = ( vtV.IsZeroXY() ? - EPS_SMALL : EPS_SMALL) ;
+      if ( bIgnoreTap)
+         dEpsRad = 0. ;
+      ptInt1 = ptP + ( ( 0 - ptP.z) / vtV.z) * vtV ;
+      if ( ptInt1.x * ptInt1.x + ptInt1.y * ptInt1.y < dRad * dRad + 2 * dRad * dEpsRad) {
          nBasInt += 1 ;
+         vtN1 = - Z_AX ;
+         dU1 = ( ( 0 - ptP.z) / vtV.z) ;
       }
-      Point3d ptInt2 = ptL + ( ( dHeight - ptL.z) / vtL.z) * vtL ;  
-      if ( ptInt2.x * ptInt2.x + ptInt2.y * ptInt2.y < dRad * dRad + 2 * dRad * EpsRad) {
-         dU2 = ( ptInt2 - ptL) * vtL ;
+      ptInt2 = ptP + ( ( dH - ptP.z) / vtV.z) * vtV ;  
+      if ( ptInt2.x * ptInt2.x + ptInt2.y * ptInt2.y < dRad * dRad + 2 * dRad * dEpsRad) {
          nBasInt += 2 ;
+         vtN2 = Z_AX ;
+         dU2 = ( ( dH - ptP.z) / vtV.z) ;
       }
    }
 
-  // Se la linea interseca entrambe le basi, si sono trovate le due intersezioni
+   // Se la linea interseca entrambe le basi, si sono trovate le due intersezioni
    if ( nBasInt == 3) {
-      if ( dU1 > dU2)
+      if ( dU1 > dU2) {
          swap( dU1, dU2) ;
-     // Trovate intersezioni
+         swap( ptInt1, ptInt2) ;
+         swap( vtN1, vtN2) ;
+      }
+      if ( bInvertNormals) {
+         vtN1 *= - 1 ;
+         vtN2 *= - 1 ;
+      }
+      // Trovate intersezioni
       return true ;
    }
-   
-  // Determino le intersezioni con la superficie laterale del cilindro
-   DBLVECTOR vdCoeff{ ptL.x * ptL.x + ptL.y * ptL.y - dRad * dRad,
-                      2 * ( ptL.x * vtL.x + ptL.y * vtL.y),
-                      vtL.x * vtL.x + vtL.y * vtL.y} ;
+
+   // Determino le intersezioni con la superficie laterale del cilindro
+   DBLVECTOR vdCoeff{ ptP.x * ptP.x + ptP.y * ptP.y - dRad * dRad,
+                      2 * ( ptP.x * vtV.x + ptP.y * vtV.y),
+                      vtV.x * vtV.x + vtV.y * vtV.y} ;
    DBLVECTOR vdRoots ;
    int nRoot = PolynomialRoots( 2, vdCoeff, vdRoots) ;
 
-  // Elimino le soluzioni cha danno intersezioni fuori dai limiti in Z del cilindro
+   // Epsilon per piani di tappo
+   double dEpsLow = ( bTapLow ? - EPS_SMALL : EPS_SMALL) ;
+   double dEpsUp = ( bTapUp ? EPS_SMALL : - EPS_SMALL) ;
+   if ( bIgnoreTap) {
+      dEpsLow = 0. ;
+      dEpsUp = 0. ;
+   }
+
+   // Elimino le soluzioni cha danno intersezioni fuori dai limiti in Z del cilindro
    if ( nRoot == 2) {
-      double dIntZ2 = ptL.z + vdRoots[1] * vtL.z ;
-      if ( dIntZ2 < 0 - EPS_SMALL  ||  dIntZ2 > dHeight + EPS_SMALL)
+      double dIntZ2 = ptP.z + vdRoots[1] * vtV.z ;
+      if ( dIntZ2 < 0 + dEpsLow  ||  dIntZ2 > dH + dEpsUp)
          -- nRoot ;
    }
    if ( nRoot >= 1) {
-      double dIntZ1 = ptL.z + vdRoots[0] * vtL.z ;
-      if ( dIntZ1 < 0 - EPS_SMALL  ||  dIntZ1 > dHeight + EPS_SMALL) {
+      double dIntZ1 = ptP.z + vdRoots[0] * vtV.z ;
+      if ( dIntZ1 < 0 + dEpsLow  ||  dIntZ1 > dH + dEpsUp) {
          if ( nRoot == 2)
             vdRoots[0] = vdRoots[1] ;
          -- nRoot ;
       }
    }
 
-  // Due soluzioni: la retta interseca due volte la superficie laterale
+   // Due soluzioni: la retta interseca due volte la superficie laterale
    if ( nRoot == 2) {
+      // Punti di intersezione con la superficie del cilindro
+      ptInt1 = ptP + vdRoots[0] * vtV ;
+      ptInt2 = ptP + vdRoots[1] * vtV ;
       dU1 = vdRoots[0] ;
       dU2 = vdRoots[1] ;
-      if ( dU1 > dU2)
+      // Determino le normali
+      vtN1.Set( ptInt1.x, ptInt1.y, 0) ;
+      vtN1.Normalize() ;
+      vtN2.Set( ptInt2.x, ptInt2.y, 0) ;
+      vtN2.Normalize() ;
+      if ( dU1 > dU2) {
          swap( dU1, dU2) ;
-     // Trovate intersezioni
-      return true ;
-   }
-   
-  // Una soluzione : la retta interseca la superficie laterale e un piano
-   else if ( nRoot == 1) {
-     // Se piano superiore
-      if ( nBasInt == 2) {
-         dU1 = vdRoots[0] ;
+         swap( ptInt1, ptInt2) ;
+         swap( vtN1, vtN2) ;
       }
-     // altrimenti piano inferiore
-      else if ( nBasInt == 1) {
-         dU2 = vdRoots[0] ;
+      if ( bInvertNormals) {
+         vtN1 *= - 1 ;
+         vtN2 *= - 1 ;
       }
-     // altrimenti niente
-      else
-         return false ;
-      if ( dU1 > dU2)
-         swap( dU1, dU2) ;
-     // Trovate intersezioni
+      // Trovate intersezioni
       return true ;
    }
 
-  // Nessuna soluzione : nessuna intersezione 
+   // Una soluzione : la retta interseca la superficie laterale e un piano
+   else if ( nRoot == 1) {
+      // Se piano superiore
+      if ( nBasInt == 2) {
+         // Punto di intersezione
+         dU1 = vdRoots[0] ;
+         ptInt1 = ptP + vdRoots[0] * vtV ;
+         // Normale alla superficie del cilindro verso l'interno
+         vtN1.Set( ptInt1.x, ptInt1.y, 0) ;
+         vtN1.Normalize() ;
+      }
+      // altrimenti piano inferiore
+      else if ( nBasInt == 1) {
+         // Punto di intersezione
+         dU2 = vdRoots[0] ;
+         ptInt2 = ptP + vdRoots[0] * vtV ;
+         // Normale alla superficie del cilindro verso l'interno
+         vtN2.Set( ptInt2.x, ptInt2.y, 0) ;
+         vtN2.Normalize() ;
+      }
+      // altrimenti niente
+      else
+         return false ;
+      if ( dU1 > dU2) {
+         swap( dU1, dU2) ;
+         swap( ptInt1, ptInt2) ;
+         swap( vtN1, vtN2) ;
+      }
+      if ( bInvertNormals) {
+         vtN1 *= - 1 ;
+         vtN2 *= - 1 ;
+      }
+      // Trovate intersezioni
+      return true ;
+   }
+
+   // Nessuna soluzione : nessuna intersezione 
    else
       return false ;
 }
 
+//----------------------------------------------------------------------------
+// Riferimento con origine nel centro della base e asse di simmetria coincidente con l'asse Z.
+// La funzione restituisce true in caso di intersezione, false altrimenti.
+//----------------------------------------------------------------------------
+bool
+IntersLineCyl( const Point3d& ptLineSt, const Vector3d& vtLineDir,
+               const Frame3d& CylFrame, double dH, double dRad, bool bTapLow, bool bTapUp,
+               double& dU1, Point3d& ptInt1, Vector3d& vtN1, double& dU2, Point3d& ptInt2, Vector3d& vtN2, bool bIgnoreTap, bool bInvertNormals)
+{
+   // Porto la linea nel riferimento del cilindro
+   Point3d ptP = GetToLoc( ptLineSt, CylFrame) ;
+   Vector3d vtV = GetToLoc( vtLineDir, CylFrame) ;
+   if ( IntersLineCyl( ptP, vtV, dH, dRad, bTapLow, bTapUp,
+                       dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, bIgnoreTap, bInvertNormals))
+   {
+      ptInt1.ToGlob( CylFrame) ;
+      vtN1.ToGlob( CylFrame) ;
+      ptInt2.ToGlob( CylFrame) ;
+      vtN2.ToGlob( CylFrame) ;
+      return true ;
+   }
+   return false ;
+}
+
 //----------------------------------------------------------------------------
 // Linea e cilindro sono nel medesimo riferimento.
 // Il cilindro è definito con centro della base, asse, raggio e altezza.
@@ -133,7 +211,13 @@ IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
    if ( ! frCyl.Set( ptCyl, vtCyl))
       return false ;
   // Ora eseguo i conti nel riferimento intrinseco
-   return IntersLineCyl( GetToLoc( ptL, frCyl), GetToLoc( vtL, frCyl), dRad, dHeight, dU1, dU2) ;
+   bool bTapLow = false ;
+   bool bTapUp = false ;
+   bool bIgnoreTap = true ;
+   Point3d ptInt1, ptInt2 ;
+   Vector3d vtN1, vtN2 ;
+   return IntersLineCyl( ptL, vtL, frCyl, dHeight, dRad, bTapLow, bTapUp,
+                         dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, bIgnoreTap) ;
 }
 
 //----------------------------------------------------------------------------
@@ -144,7 +228,7 @@ IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
 bool
 IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
                const Point3d& ptCyl1, const Point3d& ptCyl2, double dRad,
-               double& dU1, double& dU2) 
+               double& dU1, double& dU2)
 {
   // Determino asse ed altezza del cilindro
    Vector3d vtCyl = ptCyl2 - ptCyl1 ;
@@ -157,5 +241,39 @@ IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
    if ( ! frCyl.Set( ptCyl1, vtCyl))
       return false ;
   // Ora eseguo i conti nel riferimento intrinseco
-   return IntersLineCyl( GetToLoc( ptL, frCyl), GetToLoc( vtL, frCyl), dRad, dHeight, dU1, dU2) ;
+   bool bTapLow = false ;
+   bool bTapUp = false ;
+   bool bIgnoreTap = true ;
+   Point3d ptInt1, ptInt2 ;
+   Vector3d vtN1, vtN2 ;
+   return IntersLineCyl( ptL, vtL, frCyl, dHeight, dRad, bTapLow, bTapUp,
+                         dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, bIgnoreTap) ;
+}
+
+//----------------------------------------------------------------------------
+// linea già nel riferimento intrinseco del cilindro
+//----------------------------------------------------------------------------
+bool IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
+                    double dRad, double dHeight,
+                    double& dU1, double& dU2)
+{
+   Point3d ptInt1, ptInt2 ;
+   Vector3d vtN1, vtN2 ;
+   bool bTapLow = false, bTapUp = false ;
+   bool bIgnoreTap = true ;
+   return IntersLineCyl( ptL, vtL, dHeight, dRad, bTapLow, bTapUp,
+                         dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, bIgnoreTap) ;
+}
+
+
+//----------------------------------------------------------------------------
+// funzione esposta per altre dll
+//----------------------------------------------------------------------------
+bool
+IntersLineCyl( const Point3d& ptLineSt, const Vector3d& vtLineDir,
+               const Frame3d& CylFrame, double dH, double dRad,
+               double& dU1, Point3d& ptInt1, Vector3d& vtN1, double& dU2, Point3d& ptInt2, Vector3d& vtN2)
+{
+   return IntersLineCyl( ptLineSt, vtLineDir, CylFrame, dH, dRad, false, false,
+                         dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, true, false) ;
 }

IntersLineCyl.h

@@ -20,17 +20,27 @@
 // Il cilindro è centrato sull'asse Z e appoggiato sul piano XY.
 // Con intersezione viene restituito true e i parametri in dU1 e dU2.
 //----------------------------------------------------------------------------
-bool IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
-                    double dRad, double dHeight,
-                    double& dU1, double& dU2) ;
+bool
+IntersLineCyl( const Point3d& ptP, const Vector3d& vtV, double dH, double dRad, bool bTapLow, bool bTapUp,
+               double& dU1, Point3d& ptInt1, Vector3d& vtN1, double& dU2, Point3d& ptInt2, Vector3d& vtN2, bool bIgnoreTap = false, bool bInvertNormals = false) ;
+
+// come sopra ma passo il riferimento intrinseco del cilindro in cui portare la linea
+bool
+IntersLineCyl( const Point3d& ptLineSt, const Vector3d& vtLineDir,
+               const Frame3d& CylFrame, double dH, double dRad, bool bTapLow, bool bTapUp,
+               double& dU1, Point3d& ptInt1, Vector3d& vtN1, double& dU2, Point3d& ptInt2, Vector3d& vtN2, bool bIgnoreTap = false, bool bInvertNormals = false) ;
 
 //----------------------------------------------------------------------------
 inline bool
 TestIntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
                    double dRad, double dHeight)
 {
+   Point3d ptInt1, ptInt2 ;
+   Vector3d vtN1, vtN2 ;
    double dU1, dU2 ;
-   return IntersLineCyl( ptL, vtL, dRad, dHeight, dU1, dU2) ;
+   bool bTapLow = false, bTapUp = false ;
+   bool bIgnoreTap = true ;
+   return IntersLineCyl( ptL, vtL, dHeight, dRad, bTapLow, bTapUp, dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, bIgnoreTap) ;
 }
 
 //----------------------------------------------------------------------------
@@ -50,3 +60,12 @@ bool IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
 bool IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
                     const Point3d& ptCyl1, const Point3d& ptCyl2, double dRad,
                     double& dU1, double& dU2) ;
+
+//----------------------------------------------------------------------------
+// // Linea e cilindro sono nel medesimo riferimento.
+// Il cilindro è definito con raggio e altezza. ( la linea è già nel riferimento intrinseco del cilindro)
+// In caso di intersezione viene restituito true e i parametri in dU1 e dU2.
+//----------------------------------------------------------------------------
+bool IntersLineCyl( const Point3d& ptL, const Vector3d& vtL,
+                    double dRad, double dHeight,
+                    double& dU1, double& dU2) ;

IntersLineSurfBez.cpp

@@ -72,14 +72,28 @@ static void
 UpdateInfoIntersLineSurfBz( const Point3d& ptL, const Vector3d& vtDir, int nILT, int nT, const Point3d& ptSP, const Point3d& ptIBz, double dCos,
                             const Point3d& ptSP2, const Point3d& ptIBz2, double dCos2, ILSBIVECTOR& vInfo)
 {
+   int nType = LSBT_NONE ;
+   if ( dCos > EPS_ZERO)
+      nType = LSBT_IN ;
+   else if ( dCos < EPS_ZERO)
+      nType = LSBT_OUT ;
+   else
+      nType = LSBT_TOUCH ;
+
    if ( nILT == ILTA_IN  ||  nILT == ILTA_EDGE  ||  nILT == ILTA_VERT  ||  nILT == ILTA_NO_TRIA) {
       double dU = ( ptIBz - ptL) * vtDir ;
-      vInfo.emplace_back( nILT, dU, nT, dCos, ptIBz, ptSP) ;
+      vInfo.emplace_back( nType, dU, nT, dCos, ptIBz, ptSP) ;
    }
    else if ( nILT == ILTA_SEGM  ||  nILT == ILTA_SEGM_ON_EDGE) {
       double dU = ( ptIBz - ptL) * vtDir ;
       double dU2 = ( ptIBz2 - ptL) * vtDir ;
-      vInfo.emplace_back( nILT, dU, dU2, nT, dCos2, ptIBz, ptIBz2, ptSP, ptSP2) ;
+      int nType2 = LSBT_NONE ;
+      if ( dCos2 > EPS_ZERO)
+         nType2 = LSBT_IN ;
+      else if ( dCos2 < EPS_ZERO)
+         nType2 = LSBT_OUT ;
+      vInfo.emplace_back( nType, dU, 0, nT, dCos, ptIBz, P_INVALID, ptSP, P_INVALID) ;
+      vInfo.emplace_back( nType2, dU2, 0, nT, dCos2, ptIBz2, P_INVALID, ptSP2, P_INVALID) ;
    }
 }
 
@@ -93,9 +107,7 @@ OrderInfoIntersLineSurfBz( ILSBIVECTOR& vInfo)
    // ordino il vettore delle intersezioni secondo il senso crescente del parametro di linea
    sort( vInfo.begin(), vInfo.end(), 
       []( const IntLinSbzInfo& a, const IntLinSbzInfo& b)
-      {  double dUa = ( ( a.nILTA == ILTA_SEGM  ||  a.nILTA == ILTA_SEGM_ON_EDGE) ? ( a.dU + a.dU2) / 2 : a.dU) ;
-         double dUb = ( ( b.nILTA == ILTA_SEGM  ||  b.nILTA == ILTA_SEGM_ON_EDGE) ? ( b.dU + b.dU2) / 2 : b.dU) ;
-   return ( dUa < dUb) ; }) ;
+      {  return ( a.dU < b.dU) ; }) ;
 }
 
 //----------------------------------------------------------------------------
@@ -181,19 +193,9 @@ FilterLineSurfBzInters( const ILSBIVECTOR& vInfo, INTDBLVECTOR& vInters)
    // ciclo sulle intersezioni
    for ( const auto& Info : vInfo) {
       // se intersezione puntuale
-      if ( Info.nILTA == ILTA_VERT  ||  Info.nILTA == ILTA_EDGE  ||  Info.nILTA == ILTA_IN) {
-         int nFlag = LSBT_TOUCH ;
-         if ( Info.dCosDN > EPS_ZERO)
-            nFlag = LSBT_OUT ;
-         else if ( Info.dCosDN < -EPS_ZERO)
-            nFlag = LSBT_IN ;
-         vInters.emplace_back( nFlag, Info.dU) ;
-      }
-      // se altrimenti intersezione con coincidenza
-      else if ( Info.nILTA == ILTA_SEGM  ||  Info.nILTA == ILTA_SEGM_ON_EDGE) {
-         vInters.emplace_back( LSBT_TG_INI, Info.dU) ;
-         vInters.emplace_back( LSBT_TG_FIN, Info.dU2) ;
-      }
+      vInters.emplace_back( Info.nILSB, Info.dU) ;
+      // se intersezione sovrapposta
+      // da sviluppare
    }
    // elimino intersezioni ripetute
    for ( size_t j = 1 ; j < vInters.size() ; ) {
@@ -239,7 +241,343 @@ FilterLineSurfBzInters( const ILSBIVECTOR& vInfo, INTDBLVECTOR& vInters)
 }
 
 //----------------------------------------------------------------------------
-//  Intersezione di una linea con una superficie di Bezier
+//  Intersezione di una linea con una superficie di Bezier di grado 3x1 monopatch
+//----------------------------------------------------------------------------
+bool
+IntersLineSurfBzCubicLinear( const Point3d& ptL, const Vector3d& vtL, double dLen, const ISurfBezier* pSurfBz,
+                             ILSBIVECTOR& vInfo, bool bFinite)
+{
+   int nDegU, nDegV, nSpanU, nSpanV ;
+   bool bRat, bTrimmed ;
+   pSurfBz->GetInfo( nDegU, nDegV, nSpanU, nSpanV, bRat, bTrimmed) ;
+
+   // funzione pensata per funzionare solo con una monopatch di grado 3x1
+   if ( nDegU != 3 || nDegV != 1 ||  nSpanU > 1  || nSpanV > 1 || bRat)
+      return false ;
+
+   int nInters = int( vInfo.size()) ;
+
+   Point3d r = ptL ;
+   Vector3d q = vtL ;
+   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) ;
+   }
+
+   PNTVECTOR vPntCtrl = pSurfBz->GetAllControlPoints() ;
+
+   if ( bNeedToRot) {
+      for ( Point3d& pt: vPntCtrl)
+         pt.ToLoc( frRot) ;
+   }
+
+   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 ;
+
+   Vector3d a3 = -A + 3 * B - 3 * C + D ;
+   Vector3d a2 = 3 * A - 6 * B + 3 * C ;
+   Vector3d a1 = -3 * A + 3 * B ;
+   Vector3d a0 = A ;
+
+   Vector3d b3 = -E + 3 * F - 3 * G + H ;
+   Vector3d b2 = 3 * E - 6 * F + 3 * G ;
+   Vector3d b1 = -3 * E + 3 * F ;
+   Vector3d 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) ;
+   bool bFound = false ;
+   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 ptIBez, ptIBez2 ;
+               Vector3d vtN ;
+               pSurfBz->GetPointNrmD1D2(dU, dV, ISurfBezier::Side::FROM_MINUS, ISurfBezier::Side::FROM_MINUS, ptIBez, vtN) ;
+               Point3d ptSP( dU, dV, 0), ptSP2 ;
+               double dCos = vtN * vtL, dCos2 = 0 ;
+               int nType = ILTA_NO_TRIA ;
+               UpdateInfoIntersLineSurfBz( ptL, vtL, nType, -1, ptSP, ptIBez, dCos, ptSP2, ptIBez2, dCos2, vInfo) ;
+               bFound = true ;
+            }
+         }
+      }
+   }
+
+   //// se tutti i coefficienti sono zero allora potrei avere una linea che giace sulla superficie
+   //// per trovare i punti di inizio e fine sovrapposizione trovo i punti a minima distanza tra la linea e gli edge della superficie
+   //if ( ! bFound  &&  abs( vdCoeff[0]) < EPS_ZERO  &&  abs( vdCoeff[1]) < EPS_ZERO  &&  abs( vdCoeff[2]) < EPS_ZERO) {
+   //   ICRVCOMPOPOVECTOR vCrvEdge( 4) ;
+   //   vCrvEdge[0].Set(pSurfBz->GetCurveOnU( 0)) ;
+   //   vCrvEdge[1].Set(pSurfBz->GetCurveOnV( 1)) ;
+   //   vCrvEdge[2].Set(pSurfBz->GetCurveOnU( 1)) ;
+   //   vCrvEdge[3].Set(pSurfBz->GetCurveOnV( 0)) ;
+   //   double dAngTolDeg = 5 ;
+   //   for ( int i = 0 ; i < 4 ; ++i) {
+   //      PolyLine plApprox ; vCrvEdge[0]->ApproxWithLines( EPS_SMALL, dAngTolDeg, ICurve::ApprLineType::APL_STD, plApprox) ;
+   //      //CurveComposite cCC ;
+   //      //cCC.FromPolyLine( plApprox) ;
+   //      int nClosestLine = -1 ;
+   //      double dMinDist = INFINITO ;
+   //      Point3d pt ;  plApprox.GetFirstPoint( pt) ;
+   //      Point3d ptClosest ;
+   //      int c = 0 ;
+   //      int nTot = plApprox.GetPointNbr() ;
+   //      for ( int j = 0 ; j < nTot ; ++j) {
+   //         DistPointLine dpl( pt, ptL, vtL, dLen, bFinite) ;
+   //         double dDist = INFINITO ;
+   //         dpl.GetDist( dDist) ;
+   //         if ( dDist < dMinDist) {
+   //            nClosestLine = c ;
+   //            dMinDist = dDist ;
+   //         }
+   //         plApprox.GetNextPoint( pt) ;
+   //         ++ c ;
+   //      }
+
+   //      Point3d ptInt1, ptInt2 ;
+   //      if ( nClosestLine < nTot - 1  && nClosestLine > 0) {
+   //         // tra i due tratti dell'approssimazione che arrivano al punto selezionato come più vicino, devo trovare quale si avvicina di più
+   //         Point3d ptStart ; plApprox.GetFirstPoint( ptStart) ;
+   //         Point3d ptEnd ;
+   //         for ( int z = 1 ; z < nClosestLine - 1 ; ++z)
+   //            plApprox.GetNextPoint( ptStart) ;
+   //         plApprox.GetNextPoint( ptEnd) ;
+   //         // linea precedente al punto
+   //         Vector3d vtLinePre = ptEnd - ptStart ;
+   //         double dLenPre = vtLinePre.Len() ;
+   //         DistLineLine dllPre( ptStart, vtLinePre, dLenPre, ptL, vtL,dLen) ;
+   //         double dDistPre = INFINITO ;
+   //         dllPre.GetDist( dDistPre) ;
+   //         // linea che inzia con quel punto
+   //         ptStart = ptEnd ;
+   //         plApprox.GetNextPoint( ptEnd) ;
+   //         Vector3d vtLineCurr = ptEnd - ptStart ;
+   //         double dLenCurr = vtLineCurr.Len() ;
+   //         DistLineLine dllCurr( ptStart, vtLineCurr, dLenCurr, ptL, vtL,dLen) ;
+   //         double dDistCurr = INFINITO ;
+   //         dllCurr.GetDist( dDistCurr) ;
+
+   //         if ( dDistPre < dDistCurr)
+   //            dllPre.GetMinDistPoints( ptInt1, ptInt2) ;
+   //         else
+   //            dllCurr.GetMinDistPoints( ptInt1, ptInt2) ;
+   //      }
+   //      else if ( nClosestLine == 0) {
+   //         // il punto più vicino è sulla prima linea
+   //         Point3d ptStart ; plApprox.GetFirstPoint( ptStart) ;
+   //         Point3d ptEnd ; plApprox.GetNextPoint( ptEnd) ;
+   //         Vector3d vtLineCurr = ptEnd - ptStart ;
+   //         double dLenCurr = vtLineCurr.Len() ;
+   //         DistLineLine dllCurr( ptStart, vtLineCurr, dLenCurr, ptL, vtL,dLen) ;
+   //         dllCurr.GetMinDistPoints( ptInt1, ptInt2) ;
+   //      }
+   //      else if ( nClosestLine == nTot- 1) {
+   //         // il punto più vicino è sull'ultima linea
+   //         Point3d ptStart ; plApprox.GetFirstPoint( ptStart) ;
+   //         Point3d ptEnd ;
+   //         for ( int z = 1 ; z < nClosestLine - 1 ; ++z)
+   //            plApprox.GetNextPoint( ptStart) ;
+   //         plApprox.GetNextPoint( ptEnd) ;
+   //         Vector3d vtLinePre = ptEnd - ptStart ;
+   //         double dLenPre = vtLinePre.Len() ;
+   //         DistLineLine dllCurr( ptStart, vtLinePre, dLenPre, ptL, vtL,dLen) ;
+   //         dllCurr.GetMinDistPoints( ptInt1, ptInt2) ;
+   //      }
+   //      
+   //      double dU1 = 0, dV1 = 0, dU2 = 0, dV2 = 0 ;
+   //      // se ho trovato due punti vuol dire che la linea coincide con un edge e ho trovato tutto quello che serve
+   //      if ( ! AreSamePointExact( ptInt2, ORIG)) {
+   //         if ( i == 0) {
+   //            //dV1 = 0 ; dV2 = 0 ;
+   //            vCrvEdge[0]->GetParamAtPoint( ptInt1, dU1) ;
+   //            vCrvEdge[0]->GetParamAtPoint( ptInt2, dU2) ;
+   //         }
+   //         else if ( i == 1) {
+   //            //dU1 = 1 ; dU2 = 1 ;
+   //            vCrvEdge[1]->GetParamAtPoint( ptInt1, dV1) ;
+   //            vCrvEdge[1]->GetParamAtPoint( ptInt2, dV2) ;
+   //         }
+   //         else if ( i == 2){
+   //            //dV1 = 1 ; dV2 = 1 ;
+   //            vCrvEdge[2]->GetParamAtPoint( ptInt1, dU1) ;
+   //            vCrvEdge[2]->GetParamAtPoint( ptInt2, dU2) ;
+   //         }
+   //         else if ( i == 3){
+   //            //dU1 = 0 ; dU2 = 0 ;
+   //            vCrvEdge[3]->GetParamAtPoint( ptInt1, dV1) ;
+   //            vCrvEdge[3]->GetParamAtPoint( ptInt2, dV2) ;
+   //         }
+   //         Point3d ptIBez1, ptIBez2 ;
+   //         Vector3d vtN1, vtN2 ;
+   //         pSurfBz->GetPointNrmD1D2(dU1, dV1, ISurfBezier::Side::FROM_MINUS, ISurfBezier::Side::FROM_MINUS, ptIBez1, vtN1) ;
+   //         pSurfBz->GetPointNrmD1D2(dU2, dV2, ISurfBezier::Side::FROM_MINUS, ISurfBezier::Side::FROM_MINUS, ptIBez2, vtN2) ;
+   //         Point3d ptSP1( dU1, dV1, 0) ;
+   //         double dCos1 = vtN1 * vtL ;
+   //         Point3d ptSP2( dU2, dV2, 0) ;
+   //         double dCos2 = vtN2 * vtL ;
+   //         // se avevo già trovato un punto singolo che coincide col primo punto di questa intersezione sovrapposta, allora cancello l'intersezione singola che
+   //         // avevo salvato e aggiungo quella sovrapposto che ho trovato ora
+   //         if ( bFound) {
+   //            int nNewTot = int(vInfo.size()) ;
+   //            int nNewInters = nNewTot - nInters ;
+   //            bool bAlreadyFound = false ;
+   //            for ( int i = 0 ; i < nNewInters ; ++i) {
+   //               bAlreadyFound = AreSamePointApprox(vInfo[nNewTot - i].ptUV, ptSP1) ||  AreSamePointApprox(vInfo[nNewTot - i].ptUV, ptSP2) ;
+   //               if ( bAlreadyFound) {
+   //                  vInfo.erase( vInfo.begin() + nNewTot - i) ;
+   //                  break ;
+   //               }
+   //            }
+   //         }
+   //         UpdateInfoIntersLineSurfBz( ptL, vtL, ILTA_NO_TRIA, -1, ptSP1, ptIBez1, dCos1, ptSP2, ptIBez2, dCos2, vInfo) ;
+   //         bFound = true ;
+   //         break ;
+   //      }
+   //      // se ho trovato un punto a distanza zero dalla linea allora ho trovato l'intersezione
+   //      else if ( dMinDist < EPS_SMALL) {
+   //         if ( i == 0) {
+   //            //dV1 = 0 ;
+   //            vCrvEdge[0]->GetParamAtPoint( ptInt1, dU1) ;
+   //         }
+   //         else if ( i == 1) {
+   //            //dU1 = 1 ;
+   //            vCrvEdge[1]->GetParamAtPoint( ptInt1, dV1) ;
+   //         }
+   //         else if ( i == 2) {
+   //            //dV1 = 1 ;
+   //            vCrvEdge[2]->GetParamAtPoint( ptInt1, dU1) ;
+   //         }
+   //         else if ( i == 3) {
+   //            //dU1 = 0 ;
+   //            vCrvEdge[3]->GetParamAtPoint( ptInt1, dV1) ;
+   //         }
+   //         Point3d ptSP1( dU1, dV1, 0), ptSP2 ;
+   //         // se avevo trovato già altri punti controllo di non essere esattamente su una diagonale ( e quindi avere un'intersezione con ogni edge, ma due sono doppie)
+   //         if ( bFound) {
+   //            int nNewTot = int(vInfo.size()) ;
+   //            int nNewInters = nNewTot - nInters ;
+   //            bool bAlreadyFound = false ;
+   //            for ( int i = 0 ; i < nNewInters ; ++i)
+   //               bAlreadyFound = AreSamePointApprox(vInfo[nNewTot - i].ptUV, ptSP1) ;
+   //            if ( bAlreadyFound)
+   //               continue ;
+   //         }
+
+   //         Point3d ptIBez1, ptIBez2 ;
+   //         Vector3d vtN1, vtN2 ;
+   //         pSurfBz->GetPointNrmD1D2(dU1, dV1, ISurfBezier::Side::FROM_MINUS, ISurfBezier::Side::FROM_MINUS, ptIBez1, vtN1) ;
+   //         double dCos1 = vtN1 * vtL, dCos2 = 0 ;
+   //         UpdateInfoIntersLineSurfBz( ptL, vtL, ILTA_NO_TRIA, -1, ptSP1, ptIBez1, dCos1, ptSP2, ptIBez2, dCos2, vInfo) ;
+   //         bFound = true ;
+   //      }
+   //   }
+   //}
+
+   // se la superficie è trimmed verifico che i punti trovati siano all'interno del parametrico trimmato
+   if ( bTrimmed  &&  bFound) {
+      int nNewTot = int(vInfo.size()) ;
+      int nNewInters = nNewTot - nInters ;
+      const ISurfFlatRegion* pFRTrim = pSurfBz->GetTrimRegion() ;
+      for ( int i = 0 ; i < nNewInters ; ++i) {
+         Point3d ptTest = vInfo[nNewTot - i].ptUV * SBZ_TREG_COEFF ;
+         bool bInside = false ;
+         double dDist = INFINITO ;
+         IsPointInsideSurfFr( ptTest, pFRTrim, dDist, bInside) ;
+         if ( ! bInside)
+            vInfo.erase( vInfo.begin() + nNewTot - i) ;
+      }
+   }
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+//  Intersezione di una linea con una superficie di Bezier bilineare monopatch
 //----------------------------------------------------------------------------
 bool
 IntersLineSurfBzBilinear( const Point3d& ptL, const Vector3d& vtL, double dLen, const ISurfBezier* pSurfBz,

OffsetCurve3d.cpp

@@ -0,0 +1,464 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2026
+//----------------------------------------------------------------------------
+// File : OffsetCurve3d.cpp       Data : 10.06.26         Versione : 3.1f1
+// Contenuto : Classe per offset di Curve 3d.
+//
+//
+//
+// Modifiche : 10.06.26 DB Creazione modulo.
+//
+//----------------------------------------------------------------------------
+
+//--------------------------- Include ----------------------------------------
+#include "stdafx.h"
+#include "GeoConst.h"
+#include "CurveLine.h"
+#include "CurveComposite.h"
+#include "RemoveCurveDefects.h"
+#include "IntersLineCyl.h"
+#include "/EgtDev/Include/EGkPoint3d.h"
+#include "/EgtDev/Include/EGkPolyLine.h"
+#include "/EgtDev/Include/EGkOffsetCurve3d.h"
+#include "/EgtDev/Include/EgtPointerOwner.h"
+#include <algorithm>
+
+using namespace std ;
+
+#define SAVECVRORIG 1
+#define SAVEOFFDIR 1
+#define SAVECYL 1
+#if SAVECVRORIG || SAVEOFFDIR || SAVECYL
+#include "/EgtDev/Include/EGkColor.h"
+#include "/EgtDev/Include/EGkGeoVector3d.h"
+vector<IGeoObj*> vGeo ;
+vector<Color> vCol ;
+#include "/EgtDev/Include/EGkGeoObjSave.h"
+#endif
+
+//----------------------------------------------------------------------------
+bool AdjustConcavePartsInPath( const ICurveComposite* pCrv, ICURVEPOVECTOR& vOffsetCrvs, const INTVECTOR& vFlag, double dRad) ;
+
+//----------------------------------------------------------------------------
+OffsetCurve3d::~OffsetCurve3d( void)
+{
+   Reset() ;
+}
+
+//----------------------------------------------------------------------------
+bool
+OffsetCurve3d::Reset( void)
+{
+   for ( auto& pCrv : m_CrvLst) {
+      if ( pCrv != nullptr) {
+         delete pCrv ;
+         pCrv = nullptr ;
+      }
+   }
+   m_CrvLst.clear() ;
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+OffsetCurve3d::Make( const PolyLine& PL, const VCT3DVECTOR& vOffDir, double dOffDist, int nType)
+{
+   // pulisco tutto
+   Reset() ;
+   PtrOwner<CurveComposite> pCrv( CreateBasicCurveComposite()) ;
+   if ( ! pCrv->FromPolyLine( PL))
+      return false ;
+    
+#if SAVECVRORIG 
+   vGeo.push_back( pCrv->Clone()) ;
+   vCol.push_back( AQUA) ;
+   Point3d ptBase ; PL.GetFirstPoint( ptBase) ;
+   for ( int i = 0 ; i < ssize( vOffDir) ; ++i) {
+      IGeoVector3d* pVec = CreateGeoVector3d() ;
+      pVec->Set( vOffDir[i] * dOffDist, ptBase) ;
+      PL.GetNextPoint( ptBase) ;
+      vGeo.push_back( pVec) ;
+      vCol.push_back( BLUE) ;
+   }
+#endif
+
+   // verifico se la curva è un segmento di retta
+   bool bIsLine = PL.GetPointNbr() == 2 ;
+   if ( bIsLine) {
+      // faccio l'offset di una linea
+      return true ;
+   }
+
+   // se offset nullo, copio la curva ed esco
+   if ( abs( dOffDist) < 10 * EPS_SMALL) {
+      PtrOwner<CurveComposite> pCopy( CreateBasicCurveComposite()) ;
+      if ( IsNull( pCopy)  ||  ! pCopy->CopyFrom( pCrv))
+         return false ;
+      // unisco parti allineate (tranne gli estremi)
+      pCopy->MergeCurves( 10 * EPS_SMALL, ANG_TOL_STD_DEG, false) ;
+      // sposto in lista
+      m_CrvLst.push_back( Release( pCopy)) ;
+      return true ;
+   }
+
+   // elimino tratti molto corti
+   if ( ! RemoveCurveSmallParts( pCrv, m_dLinTol))
+      return false ;
+
+   bool bClosed = pCrv->IsClosed() ;
+
+   INTVECTOR vFlag ;
+   vFlag.push_back( OffsetCurve3d::AngType::ANG_STR) ;
+   const ICurve* pSubCrv = pCrv->GetFirstCurve() ;
+   for ( int i = 1 ; i < pCrv->GetCurveCount() ; ++i) {
+      pSubCrv = pCrv->GetNextCurve() ;
+      Vector3d vtDirCurr ; pSubCrv->GetStartDir( vtDirCurr) ;
+      int nFlag = vtDirCurr * vOffDir[i] > 0 ? OffsetCurve3d::AngType::ANG_SMOOTH_CONC : OffsetCurve3d::AngType::ANG_STR ;
+      vFlag.push_back( nFlag) ;
+   }
+
+   double dRadCorr ;
+   Point3d ptPrev ; pCrv->GetStartPoint( ptPrev) ;
+   ptPrev += vOffDir[0] * dOffDist ;
+   Vector3d vtNormPrev ;
+   Vector3d vtCorrPrev ;
+   Vector3d vtTangPrev ;
+   Vector3d vtDirPrev ; pCrv->GetStartDir( vtDirPrev) ;
+   const ICurve* pCrvPrev = pCrv->GetFirstCurve() ;
+   const ICurve* pCrvCurr ;
+   vector<PtrOwner<ICurve>> vOffsetCrvs ;
+   for ( int i = 1 ; i < pCrv->GetCurveCount() ; ++i) {
+      pCrvCurr = pCrv->GetNextCurve() ;
+      Vector3d vtOffDir = vOffDir[i] ;
+      Vector3d vtDirCurr ; pCrvCurr->GetStartDir( vtDirCurr) ;
+      pCrvPrev->GetStartDir( vtDirPrev) ;
+      Vector3d vtTang = Media( vtDirCurr, vtDirPrev) ;
+      vtTang.Normalize() ;
+      Vector3d vtNorm = vtOffDir ;
+      vtNorm.Rotate( vtTang, -90) ;
+      //Vector3d vtCorr = vtTang ^ vtNorm ; vtCorr.Normalize() ;
+      // devo invertire vtCorr??? se sì, quando?/////////////////////////////////////////
+      Vector3d vtCorr = vtOffDir ;
+      double dCorrK = 1 ;
+      if ( vFlag[i] == OffsetCurve3d::AngType::ANG_CONC) {
+         double dHalfAlfa = acos( vtTang * vtTangPrev) ;
+         dCorrK = 1 / sin( 90 - dHalfAlfa) ;
+      }
+
+      Point3d ptP ; pCrvCurr->GetStartPoint( ptP) ;
+      dRadCorr = dOffDist ;
+      ptP = ptP + dRadCorr * dCorrK * vtCorr ;
+      // se secondo punto di angolo esterno di fianco, inserisco movimenti intermedi
+      if ( vFlag[i] == OffsetCurve3d::AngType::ANG_CVEX  &&  vFlag[i-1] == OffsetCurve3d::AngType::ANG_CVEX) {
+         double dAlfa = acos( vtTang * vtTangPrev) ;
+         double dDelta = dOffDist * tan( dAlfa / 4) ;
+         Point3d ptAdd1 = ptPrev + dDelta * vtTangPrev ;
+         ICurveLine* pCL1 = CreateBasicCurveLine() ;
+         pCL1->Set( ptPrev, ptAdd1) ;
+         vOffsetCrvs.emplace_back( pCL1) ;
+         Point3d ptAdd2 = ptP - dDelta * vtTang ;
+         ICurveLine* pCL2 = CreateBasicCurveLine() ;
+         pCL2->Set( ptAdd1, ptAdd2) ;
+         vOffsetCrvs.emplace_back( pCL2) ;
+         ptPrev = ptAdd2 ;
+      }
+
+      //// se punto di angolo interno di fianco, elimino eventuali movimenti precedenti invertiti
+      //if ( vFlag[i] == OffsetCurve3d::AngType::ANG_CVEX == 3) {
+      //   local nLastId = EgtGetLastInGroup( nClPathId)
+      //   while nLastId do
+      //      local vtMlast = ptP - EgtEP( nLastId, GDB_ID.ROOT) ; vtMlast:normalize()
+      //      if vtMlast * vtGpre < 0.5 then
+      //         ptPpre = EgtSP( nLastId, GDB_ID.ROOT)
+      //         EgtErase( nLastId)
+      //      else
+      //         break
+      //      end
+      //      nLastId = EgtGetLastInGroup( nClPathId)
+      //   end
+      //}
+
+      //// se appena dopo angolo interno di fianco, verifico se da aggiungere
+      //bool bToAdd = true
+      //if ( nFlpre == 3 and abs( dSideAng) > GEO.EPS_ANG_SMALL) {
+      //   local vtMove = ptP - ptPpre ; vtMove:normalize()
+      //   if vtMove * vtTang < 0.5 then
+      //      bToAdd = false
+      //   end
+      //}
+
+      // aggiungo tratto
+      ICurveLine* pCL = CreateBasicCurveLine() ;
+      pCL->Set( ptPrev, ptP) ;
+      vOffsetCrvs.emplace_back( pCL) ;
+      // aggiorno punto precedente
+      ptPrev = ptP ;
+      vtNormPrev = vtNorm ;
+      vtCorrPrev = vtCorr ;
+      vtTangPrev = vtTang ;
+      vtDirPrev = vtDirCurr ;
+   }
+
+   //// qui faccio la correzione per gli angoli interni
+   //AdjustConcavePartsInPath( pCrv, vOffsetCrvs, vFlag, dOffDist) ;
+
+#if SAVECVRORIG || SAVEOFFDIR || SAVECYL
+   SaveGeoObj( vGeo, vCol, "C:\\Temp\\curve offset 3d\\crvoffset.nge") ;
+#endif 
+
+   PtrOwner<ICurveComposite> pCrvOffset( CreateBasicCurveComposite()) ;
+   for ( int i = 0 ; i < ssize( vOffsetCrvs) ; ++i) {
+      if ( ! pCrvOffset->AddCurve( Release( vOffsetCrvs[i])))
+         return false ;
+   }
+   m_CrvLst.push_back( Release( pCrvOffset)) ;
+
+   return true ;
+
+
+   // raccordi
+
+   // angoli interni
+
+   // angoli esterni
+
+   // auto intersezioni
+
+   //// sesto passo : se curva aperta, elimino i tratti che stanno nella circonferenza di offset dei punti estremi
+
+   //// ottavo passo : concateno i percorsi risultanti (senza cambiare verso)
+
+   //// nono passo : se con smusso o estensione, sostituisco i fillet con questi
+
+   //// ordino le curve in ordine decrescente di lunghezza
+   //if ( m_CrvLst.size() > 1) {
+   //   for ( auto pCrv : m_CrvLst) {
+   //      double dLen ;
+   //      if ( pCrv->GetLength( dLen))
+   //         pCrv->SetTempProp( int( 1000 * dLen)) ;
+   //      else
+   //         pCrv->SetTempProp( 0) ;
+   //   }
+   //   m_CrvLst.sort( []( const ICurve* pA, const ICurve* pB) { return ( pA->GetTempProp() > pB->GetTempProp()) ; }) ;
+   //}
+
+   //// se originale era chiusa, verifico le risultanti e se necessario cerco di chiuderle
+   //if ( bClosed) {
+   //   for ( auto pCrv : m_CrvLst) {
+   //      CurveComposite* pCrvCo = GetBasicCurveComposite( pCrv) ;
+   //      if ( pCrvCo != nullptr)
+   //         pCrvCo->Close() ;
+   //   }
+   //}
+
+   //return true ;
+}
+
+//----------------------------------------------------------------------------
+ICurve*
+OffsetCurve3d::GetCurve( void)
+{
+   return GetLongerCurve() ;
+}
+
+//----------------------------------------------------------------------------
+ICurve*
+OffsetCurve3d::GetLongerCurve( void)
+{
+   if ( m_CrvLst.empty())
+      return nullptr ;
+   // le curve sono ordinate in senso decrescente di lunghezza
+   ICurve* pCrv = m_CrvLst.front() ;
+   m_CrvLst.pop_front() ;
+   return pCrv ;
+}
+
+//----------------------------------------------------------------------------
+ICurve*
+OffsetCurve3d::GetShorterCurve( void)
+{
+   if ( m_CrvLst.empty())
+      return nullptr ;
+   // le curve sono ordinate in senso decrescente di lunghezza
+   ICurve* pCrv = m_CrvLst.back() ;
+   m_CrvLst.pop_back() ;
+   return pCrv ;
+}
+
+struct Cyl {
+   Cyl( void): frCyl( GLOB_FRM), dH( 0.), dRad( 0.) {;} ;
+   Cyl( const Frame3d& _frCyl, double _dH, double _dRad, double _dLinTol) :
+      frCyl( _frCyl), dH( _dH), dRad( _dRad) { ;}
+   Cyl( const Point3d& _ptBase, const Vector3d& vtZ, double _dH, double _dRad, double _dLinTol) :
+      dH( _dH), dRad( _dRad){
+      frCyl.Set( _ptBase, vtZ); }
+public :
+   Frame3d frCyl ;
+public:
+   double dH ;
+   double dRad ;
+};
+
+typedef vector<Cyl> CYLVECT ;
+
+//----------------------------------------------------------------------------
+bool
+IsPointInsideCylinder( const Point3d& ptTest, const Cyl& offCyl)
+{
+   Point3d ptTestLoc = ptTest ; ptTestLoc.ToLoc( offCyl.frCyl) ;
+   if ( ptTestLoc.z > offCyl.dH  ||  ptTestLoc.z < 0)
+      return false ;
+   double dDist = ptTestLoc.x * ptTestLoc.x + ptTestLoc.y * ptTestLoc.y ;
+   double dRadSq = offCyl.dRad * offCyl.dRad ;
+   if ( dDist > dRadSq)
+      return false ;
+   return true ;
+}
+
+bool
+AdjustConcavePartsInPath( const ICurveComposite* pCrv, ICURVEPOVECTOR& vOffsetCrvs, const INTVECTOR& vFlag, double dRad)
+{
+   const double dLinTol = 5 * EPS_SMALL ;
+   INTVECTOR vErase ;
+   for ( int i = 0 ; i < ssize( vOffsetCrvs) ; ++i) {
+      int nFlag = vFlag[i] ;
+      if ( nFlag == OffsetCurve3d::AngType::ANG_SMOOTH_CONC) {
+         // scorro i prossimi finchè trovo la fine della zona concava
+         INTVECTOR vLines ;
+         while ( nFlag == OffsetCurve3d::AngType::ANG_SMOOTH_CONC) {
+            vLines.push_back( i) ;
+            ++i ;
+            nFlag = vFlag[i] ;
+         }
+         CYLVECT vCyl ;
+         // creo un cilindro della dimensione del raggio
+         for ( int j = 0 ; j < ssize( vLines) ; ++j) {
+            const ICurve* pSubCrv = pCrv->GetCurve( vLines[j]) ;
+            Point3d ptStart, ptEnd ;
+            pSubCrv->GetStartPoint( ptStart) ;
+            pSubCrv->GetEndPoint( ptEnd) ;
+            Vector3d vtHeight = ptEnd - ptStart ; vtHeight.Normalize() ;
+            double dHeight = vtHeight.Len() ;
+            vCyl.emplace_back( ptStart, vtHeight, dHeight, dRad, dLinTol) ;
+         }
+
+         // controllo l'end di ogni linea per verificare se sta nel cilindro definito da uno degli altri tratti
+         // controllo tutto i punti
+         bool bErasedSomePart = false ;
+         bool bErasedPrev = false ;
+         INTVECTOR vInters ;
+         for ( int j = 0 ; j < ssize( vLines) ; ++j) {
+            Point3d ptStart, ptEnd ;
+            const ICurve* pSubCrv = pCrv->GetCurve( vLines[j]) ;
+            if ( pSubCrv == nullptr)
+               return false ;
+            pSubCrv->GetEndPoint( ptEnd) ;
+            pSubCrv->GetStartPoint( ptStart) ;
+            // se stanno in uno dei cilindri degli altri tratti della zona concava
+            for ( int k = 0 ; k < ssize( vLines) ; ++k) {
+               if ( j == k)
+                  continue ;
+               bool bToErase = IsPointInsideCylinder( ptEnd, vCyl[k]) ;
+               if ( bErasedPrev  &&  ! bToErase)
+                  bToErase = bToErase || IsPointInsideCylinder( ptStart, vCyl[k]) ;
+               if ( bToErase) {                 
+                  bErasedSomePart = true ;
+                  bErasedPrev = true ;
+                  vInters.push_back( vLines[j]) ;
+                  if ( j < ssize( vLines) - 1)
+                     vInters.push_back( vLines[j+1]) ;
+                  ++j ;
+                  break ;
+               }
+               else
+                  bErasedPrev = false ;
+            }
+         }
+         if ( bErasedSomePart) {
+            // calcolo le intersezioni effettive del primo e ultimo tratto cancellati con i cilindri che li hanno cancellati
+            // controllo che effettivamente tutti i tratti cancellati siano consecutivi
+            for ( int j = 1 ; j < ssize( vInters) ; ++j) {
+               if ( vInters[j] != vInters[j-1] + 1)
+                  return false ;
+            }
+            for ( int j = 0 ; j < ssize( vInters) ; ++j) {
+               // cancello i tratti intermedi
+               if ( j > 0 && j < ssize( vInters) - 1) {
+                  vErase.push_back( vInters[j]) ;
+                  continue ;
+               }
+               // per il primo e ultimo controllo le intersezioni con tutti i cilindri
+               ICurve* pCL = vOffsetCrvs[vInters[j]] ;
+               Point3d ptStart ; pCL->GetStartPoint( ptStart) ;
+               Vector3d vtStart ; pCL->GetStartDir( vtStart) ;
+               double dLen ; pCL->GetLength( dLen) ;
+               double dUTrim = ( j == 0 ? INFINITO : 0) ;
+               Point3d ptTrim = P_INVALID ;
+               for ( int k = 0 ; k < ssize( vCyl) ; ++k) {
+                  if ( vInters[j] == k)
+                     continue ;
+                  Point3d ptInt1 = P_INVALID, ptInt2 = P_INVALID ;
+                  double dU1, dU2 ;
+                  Vector3d vtN1, vtN2 ;
+                  if ( IntersLineCyl( ptStart, vtStart * dLen, vCyl[k].frCyl, vCyl[k].dH, vCyl[k].dRad, false, false, dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, true)) {
+                     bool bUpdate = ( j == 0 ? dU1 < dUTrim : dU1 > dUTrim) ;
+                     bUpdate = bUpdate &&  ptInt1.IsValid() &&  dU1 > 0  &&  dU1 < 1 ;
+                     bUpdate = bUpdate &&  vtN1 * vtStart < 0 ;
+                     if ( bUpdate) {
+                        dUTrim = dU1 ;
+                        ptTrim = ptInt1 ;
+                     }
+                     bUpdate = ( j == 0 ? dU2 < dUTrim : dU2 > dUTrim) ;
+                     bUpdate = bUpdate &&  ptInt2.IsValid() &&  dU2 > 0  &&  dU2 < 1 ;
+                     bUpdate = bUpdate &&  vtN2 * vtStart > 0 ;
+                     if ( bUpdate) {
+                        dUTrim = dU2 ;
+                        ptTrim = ptInt2 ;
+                     }
+                  }
+               }
+               if ( ptTrim.IsValid()) {
+                  if ( j == 0) {
+                     pCL->ModifyEnd( ptTrim) ;
+                     double dNewLen ; pCL->GetLength( dNewLen) ;
+                     if ( dNewLen < 0.1  &&  vInters[0] != 0) {  // se fosse il primo allora potrei modificare il successivo
+                        int nPrev = vInters[0] - 1 ;
+                        vErase.push_back( vInters[0]) ;
+                        vInters[0] = nPrev ;
+                        ICurve* pCLPrev = vOffsetCrvs[nPrev] ;
+                        pCLPrev->ModifyEnd( ptTrim) ;
+                     }
+                  }
+                  else {
+                     pCL->ModifyStart( ptTrim) ;
+                     double dNewLen ; pCL->GetLength( dNewLen) ;
+                     if ( dNewLen < 0.1  &&  vInters[j] != ssize( vOffsetCrvs) - 1) {  // se fosse l'ultima curva allora potrei modificare la precedente
+                        int nNext = vInters[j] + 1 ;
+                        vErase.push_back( vInters[j]) ;
+                        vInters[j] = nNext ;
+                        ICurve* pCLNext = vOffsetCrvs[nNext] ;
+                        pCLNext->ModifyStart( ptTrim) ;
+                     }
+                  }
+               }
+            }
+         }
+         i = vLines.back() ;
+      }
+   }
+
+   // scorro tutto il vettore delle linee di offset e unisco aggiungendo una linea dove ne ho cancellate
+   for ( int i = 0 ; i < ssize( vOffsetCrvs) - 1 ; ++i) {
+      Point3d ptEndCurr, ptStartNext ;
+      vOffsetCrvs[i]->GetEndPoint( ptEndCurr) ;
+      vOffsetCrvs[i+1]->GetStartPoint( ptStartNext) ;
+      if ( ! AreSamePointApprox( ptEndCurr, ptStartNext)) {
+         ICurveLine* pCL = CreateBasicCurveLine() ;
+         pCL->Set( ptEndCurr, ptStartNext) ;
+         PtrOwner<ICurve> pCrvL( pCL) ;
+         vOffsetCrvs.insert( vOffsetCrvs.begin() + i + 1, std::move(pCrvL)) ;
+         ++i ;
+      }
+   }
+   return true ;
+}

PolyLine.cpp

@@ -1991,17 +1991,11 @@ MatchPolyLinesAddingPoints( const PolyLine& PL1, const PolyLine& PL2, int nType,
    nAddedSpan = 0 ;
    nCrv1 = 0 ;
    nCrv2 = 0 ;
-   bool bLast1 = false ;
-   bool bLast2 = false ;
    while ( nAddedSpan < nPnt) {
-      if ( nCrv1 >= nPnt1) {
+      if ( nCrv1 >= nPnt1)
          nCrv1 = nPnt1 - 1 ;
-         bLast1 = true ;
-      }
-      if ( nCrv2 >= nPnt2) {
+      if ( nCrv2 >= nPnt2)
          nCrv2 = nPnt2 - 1 ;
-         bLast2 = true ;
-      }
       bool bRep1 = vbRep1[nCrv1] ;
       bool bRep2 = vbRep2[nCrv2] ;
       const ICurve* pSubCrv1 = cc1.GetCurve( nCrv1) ;

ProjectCurveSurf.cpp

@@ -40,6 +40,7 @@ const int P5AX_CVEX = 2 ;              // su angolo convesso
 const int P5AX_CONC = 3 ;              // in angolo concavo
 const int P5AX_BEFORE_CONC = 4 ;       // adiacente ad angolo concavo
 const int P5AX_AFTER_CONC = 5 ;        // adiacente ad angolo concavo
+const int P5AX_SMOOTH_CONC = 6 ;       // zona concava curva, senza spigolo netto
 
 //----------------------------------------------------------------------------
 static double
@@ -64,6 +65,7 @@ PointsInTolerance( const PNT5AXVECTOR& vPt5ax, int nPrec, int nCurr, int nNext,
 static bool
 AddPointsOnCorners( PNT5AXVECTOR& vPt5ax)
 {
+   const double dSinSmallAngle = sin( 0 * DEGTORAD) ;
    for ( int i = 1 ; i < ssize( vPt5ax) ; ++ i) {
      // precedente
       int j = i - 1 ;
@@ -79,18 +81,24 @@ AddPointsOnCorners( PNT5AXVECTOR& vPt5ax)
             Point3d ptInt ;
             if ( IntersLinePlane( ptEdge, vtEdge, 1, plPlane3, ptInt, false) == ILPT_YES) {
               // verifico se spigolo convesso o concavo
-               bool bConvex ;
-               if ( ! AreSamePointApprox( ptInt, vPt5ax[j].ptP))
-                  bConvex = ( ( vPt5ax[j].vtDir1 ^ ( ptInt - vPt5ax[j].ptP)) * vtEdge > 0) ;
-               else
-                  bConvex = (( vPt5ax[i].vtDir1 ^ ( ptInt - vPt5ax[i].ptP)) * vtEdge < 0) ;
+               bool bConvex = (vPt5ax[i].ptP - vPt5ax[j].ptP) * vPt5ax[j].vtDir1 < 0 ;
+               bool bValidInters = true ;
+               if ( i > 2) {
+                  int k = i - 2 ;
+                  // verifico la concavità anche tornando indietro lungo la linea
+                  if ( ( ( vPt5ax[k].ptP - vPt5ax[j].ptP) * vPt5ax[i].vtDir1 < 0) != bConvex) {
+                     LOG_WARN( GetEGkLogger(), "La superficie su cui si sta proiettando la curva ha delle normali incoerenti")
+                     return false ;
+                  }
+                  // verifico che l'intersezione sia tra i e j e non prima di j
+                  bValidInters = ( ptInt - vPt5ax[j].ptP) * ( vPt5ax[j].ptP - vPt5ax[k].ptP) > 0 ;
+               }
               // se convesso, metto due punti con direzione appena prima e appena dopo
                if ( bConvex) {
                   Vector3d vtLine1 = ptInt - vPt5ax[j].ptP ; double dLen1 = vtLine1.Len() ;
                   Vector3d vtLine2 = vPt5ax[i].ptP - ptInt ; double dLen2 = vtLine2.Len() ;
-                  if ( dLen1 > 2 * EPS_SMALL) {
+                  if ( dLen1 > 10 * EPS_SMALL  &&  bValidInters) {
                      Point5ax Pt5ax ;
-                     Pt5ax.ptP = ptInt - vtLine1 / dLen1 * 2 * EPS_SMALL ;
                      Pt5ax.vtDir1 = vPt5ax[j].vtDir1 ;
                      Pt5ax.vtDir2 = vPt5ax[j].vtDir2 ;
                      Pt5ax.vtDirU = vPt5ax[j].vtDirU ;
@@ -102,9 +110,14 @@ AddPointsOnCorners( PNT5AXVECTOR& vPt5ax)
                   }
                   else
                      vPt5ax[j].nFlag = P5AX_CVEX ;
-                  if ( dLen2 > 2 * EPS_SMALL) {
+                  if ( dLen2 > 10 * EPS_SMALL) {
                      Point5ax Pt5ax ;
-                     Pt5ax.ptP = ptInt + vtLine2 / dLen2 * 2 * EPS_SMALL ;
+                     if ( bValidInters)
+                        Pt5ax.ptP = ptInt + vtLine2 / dLen2 * 2 * EPS_SMALL ;
+                     else {
+                        Vector3d vtNewLine = vPt5ax[i].ptP - vPt5ax[j].ptP ; vtNewLine.Normalize() ;
+                        Pt5ax.ptP =  vPt5ax[j].ptP + vtNewLine * 2 * EPS_SMALL ;
+                     }
                      Pt5ax.vtDir1 = vPt5ax[i].vtDir1 ;
                      Pt5ax.vtDir2 = vPt5ax[i].vtDir2 ;
                      Pt5ax.vtDirU = vPt5ax[i].vtDirU ;
@@ -133,6 +146,21 @@ AddPointsOnCorners( PNT5AXVECTOR& vPt5ax)
             }
          }
       }
+      else {
+         // guardo se la proiezione il tratto successivo, lungo la normale precedente + maggiore di un angolo minimo ( angolo interno smooth)
+         Vector3d vtDirNext = vPt5ax[i].ptP - vPt5ax[j].ptP ;
+         vtDirNext.Normalize() ;
+         if ( vtDirNext * vPt5ax[j].vtDir1 > dSinSmallAngle) {
+            // se concavo senza spigolo netto segnalo zona concava smooth
+            vPt5ax[i].nFlag = P5AX_SMOOTH_CONC ;
+         }
+      }
+   }
+
+   // riscorro tutto il vettore per vedere se ho creato delle zone concave smooth frammentate (separate solo da un tratto non classificato concavo), che quindi uniformo
+   for ( int i = 1 ; i < ssize( vPt5ax) - 1 ; ++ i) {
+      if ( vPt5ax[i].nFlag != P5AX_SMOOTH_CONC  &&  vPt5ax[i-1].nFlag == P5AX_SMOOTH_CONC  &&  vPt5ax[i+1].nFlag == P5AX_SMOOTH_CONC)
+         vPt5ax[i].nFlag = P5AX_SMOOTH_CONC ;
    }
    return true ;
 }
@@ -377,8 +405,10 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf,
    }
 
   // se richiesto, inserimento punti intermedi in presenza di spigoli
-   if ( bSharpEdges)
-      AddPointsOnCorners( vPt5ax) ;
+   if ( bSharpEdges) {
+      if ( ! AddPointsOnCorners( vPt5ax))
+         return false ;
+   }
 
   // rimozione punti in eccesso rispetto alle tolleranze
    RemovePointsInExcess( vPt5ax, dLinTol, dMaxSegmLen, bSharpEdges) ;
@@ -393,7 +423,7 @@ typedef std::vector<IntersParLinesSurfTm*> INTPARLINESTMPVECTOR ;
 //----------------------------------------------------------------------------
 static bool
 ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const Frame3d& frRefLine, const INTPARLINESTMPVECTOR& vpIntPLSTM,
-                    double dPar, Point5ax& Pt5ax)
+                    double dPar, bool bFromVsTo, Point5ax& Pt5ax)
 {
   // intersezione retta di proiezione con superfici  (conservo l'intersezione più alta)
    Point3d ptL = GetToLoc( ptP, frRefLine) ;
@@ -402,23 +432,48 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const Frame
    for ( int i = 0 ; i < ssize( vpIntPLSTM) ; ++ i) {
       ILSIVECTOR vIntRes ;
       if ( vpIntPLSTM[i]->GetInters( ptL, 1, vIntRes, false)) {
-        // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
-         int nI = ssize( vIntRes) - 1 ;
-         while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
-            --nI ;
-        // se trovata
-         if ( nI >= 0) {
-            if ( nInd < 0) {
-               IntRes = vIntRes[nI] ;
-               nInd = i ;
-            }
-            else {
-               double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
-               double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
-               if ( dU > dUref) {
+        // se dalla direzione
+         if ( bFromVsTo) {
+           // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
+            int nI = ssize( vIntRes) - 1 ;
+            while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+               --nI ;
+           // se trovata
+            if ( nI >= 0) {
+               if ( nInd < 0) {
                   IntRes = vIntRes[nI] ;
                   nInd = i ;
                }
+               else {
+                  double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
+                  double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
+                  if ( dU > dUref) {
+                     IntRes = vIntRes[nI] ;
+                     nInd = i ;
+                  }
+               }
+            }
+         }
+        // altrimenti verso la direzione
+         else {
+           // cerco la prima intersezione valida a partire dalla prima (è la più alta)
+            int nI = 0 ;
+            while ( nI < ssize( vIntRes)  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+               ++nI ;
+           // se trovata
+            if ( nI < ssize( vIntRes)) {
+               if ( nInd < 0) {
+                  IntRes = vIntRes[nI] ;
+                  nInd = i ;
+               }
+               else {
+                  double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU : IntRes.dU2) ;
+                  double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU : vIntRes[nI].dU2) ;
+                  if ( dU < dUref) {
+                     IntRes = vIntRes[nI] ;
+                     nInd = i ;
+                  }
+               }
             }
          }
       }
@@ -455,7 +510,7 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const Frame
 //----------------------------------------------------------------------------
 bool
 ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const Vector3d& vtDir,
-                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, PNT5AXVECTOR& vPt5ax)
+                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, bool bFromVsTo, PNT5AXVECTOR& vPt5ax)
 {
   // sistemazioni per tipo di superficie
    CISRFTMPVECTOR vpSurfTm ;
@@ -521,7 +576,7 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const Vect
    while ( bFound) {
      // se trovo proiezione, la salvo
       Point5ax Pt5ax ; 
-      if ( ProjectPointOnSurf( ptP, vpSurfTm, frRefLine, vpIntPLSTM, dPar, Pt5ax))
+      if ( ProjectPointOnSurf( ptP, vpSurfTm, frRefLine, vpIntPLSTM, dPar, bFromVsTo, Pt5ax))
          vPt5ax.emplace_back( Pt5ax) ;
      // passo al successivo
       bFound = PL.GetNextUPoint( &dPar, &ptP) ;
@@ -543,7 +598,8 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const Vect
 
 //----------------------------------------------------------------------------
 static bool
-ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const IGeoPoint3d& gpRef, double dPar, Point5ax& Pt5ax)
+ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const IGeoPoint3d& gpRef, double dPar, bool bFromVsTo,
+                    Point5ax& Pt5ax)
 {
   // punto di riferimento
    Point3d ptMin = gpRef.GetPoint() ;
@@ -558,23 +614,48 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const IGeoP
       for ( int i = 0 ; i < ssize( vpStm) ; ++ i) {
          ILSIVECTOR vIntRes ;
          if ( IntersLineSurfTm( ptP, vtLine, dLineLen, *vpStm[i], vIntRes, false)) {
-           // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
-            int nI = ssize( vIntRes) - 1 ;
-            while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
-               --nI ;
-           // se trovata
-            if ( nI >= 0) {
-               if ( nInd < 0) {
-                  IntRes = vIntRes[nI] ;
-                  nInd = i ;
-               }
-               else {
-                  double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
-                  double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
-                  if ( dU > dUref) {
+            // se dal punto
+            if ( bFromVsTo) {
+              // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
+               int nI = ssize( vIntRes) - 1 ;
+               while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+                  --nI ;
+              // se trovata
+               if ( nI >= 0) {
+                  if ( nInd < 0) {
                      IntRes = vIntRes[nI] ;
                      nInd = i ;
                   }
+                  else {
+                     double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
+                     double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
+                     if ( dU > dUref) {
+                        IntRes = vIntRes[nI] ;
+                        nInd = i ;
+                     }
+                  }
+               }
+            }
+           // altrimenti verso il punto
+            else {
+              // cerco la prima intersezione valida a partire dalla prima (è la più alta)
+               int nI = 0 ;
+               while ( nI < ssize( vIntRes)  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+                  ++nI ;
+              // se trovata
+               if ( nI < ssize( vIntRes)) {
+                  if ( nInd < 0) {
+                     IntRes = vIntRes[nI] ;
+                     nInd = i ;
+                  }
+                  else {
+                     double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU : IntRes.dU2) ;
+                     double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU : vIntRes[nI].dU2) ;
+                     if ( dU < dUref) {
+                        IntRes = vIntRes[nI] ;
+                        nInd = i ;
+                     }
+                  }
                }
             }
          }
@@ -612,7 +693,7 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const IGeoP
 //----------------------------------------------------------------------------
 bool
 ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const IGeoPoint3d& gpRef,
-                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, PNT5AXVECTOR& vPt5ax)
+                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, bool bFromVsTo, PNT5AXVECTOR& vPt5ax)
 {
   // sistemazioni per tipo di superficie
    CISRFTMPVECTOR vpSurfTm ;
@@ -663,7 +744,7 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const IGeo
    while ( bFound) {
      // se trovo proiezione, la salvo
       Point5ax Pt5ax ; 
-      if ( ProjectPointOnSurf( ptP, vpSurfTm, gpRef, dPar, Pt5ax))
+      if ( ProjectPointOnSurf( ptP, vpSurfTm, gpRef, dPar, bFromVsTo, Pt5ax))
          vPt5ax.emplace_back( Pt5ax) ;
      // passo al successivo
       bFound = PL.GetNextUPoint( &dPar, &ptP) ;
@@ -681,7 +762,8 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const IGeo
 
 //----------------------------------------------------------------------------
 static bool
-ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const ICurve& crRef, double dPar, Point5ax& Pt5ax)
+ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const ICurve& crRef, double dPar, bool bFromVsTo,
+                    Point5ax& Pt5ax)
 {
   // punto a minima distanza
    DistPointCurve dPC( ptP, crRef) ;
@@ -699,23 +781,48 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const ICurv
          for ( int i = 0 ; i < ssize( vpStm) ; ++ i) {
             ILSIVECTOR vIntRes ;
             if ( IntersLineSurfTm( ptP, vtLine, dLineLen, *vpStm[i], vIntRes, false)) {
-              // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
-               int nI = ssize( vIntRes) - 1 ;
-               while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
-                  --nI ;
-              // se trovata
-               if ( nI >= 0) {
-                  if ( nInd < 0) {
-                     IntRes = vIntRes[nI] ;
-                     nInd = i ;
-                  }
-                  else {
-                     double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
-                     double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
-                     if ( dU > dUref) {
+              // se dalla curva
+               if ( bFromVsTo) {
+                 // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
+                  int nI = ssize( vIntRes) - 1 ;
+                  while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+                     --nI ;
+                 // se trovata
+                  if ( nI >= 0) {
+                     if ( nInd < 0) {
                         IntRes = vIntRes[nI] ;
                         nInd = i ;
                      }
+                     else {
+                        double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
+                        double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
+                        if ( dU > dUref) {
+                           IntRes = vIntRes[nI] ;
+                           nInd = i ;
+                        }
+                     }
+                  }
+               }
+              // altrimenti verso la curva
+               else {
+                 // cerco la prima intersezione valida a partire dalla prima (è la più alta)
+                  int nI = 0 ;
+                  while ( nI < ssize( vIntRes)  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+                     ++nI ;
+                 // se trovata
+                  if ( nI < ssize( vIntRes)) {
+                     if ( nInd < 0) {
+                        IntRes = vIntRes[nI] ;
+                        nInd = i ;
+                     }
+                     else {
+                        double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU : IntRes.dU2) ;
+                        double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU : vIntRes[nI].dU2) ;
+                        if ( dU < dUref) {
+                           IntRes = vIntRes[nI] ;
+                           nInd = i ;
+                        }
+                     }
                   }
                }
             }
@@ -738,7 +845,7 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const ICurv
            // assegno valori al punto 5assi
             Pt5ax.ptP = ptInt ;
             Pt5ax.vtDir1 = vtN ;
-            Pt5ax.vtDir2 = vtLine ;
+            Pt5ax.vtDir2 = ( bFromVsTo ? vtLine : -vtLine) ;
             Pt5ax.vtDirU = V_NULL ;
             Pt5ax.vtDirV = V_NULL ;
             Pt5ax.dPar = dPar ;
@@ -754,7 +861,7 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const ICurv
 //----------------------------------------------------------------------------
 bool
 ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const ICurve& crRef,
-                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, PNT5AXVECTOR& vPt5ax)
+                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, bool bFromVsTo, PNT5AXVECTOR& vPt5ax)
 {
   // Sistemazioni per tipo di superficie
    CISRFTMPVECTOR vpSurfTm ;
@@ -805,7 +912,7 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const ICur
    while ( bFound) {
      // se trovo proiezione, la salvo
       Point5ax Pt5ax ; 
-      if ( ProjectPointOnSurf( ptP, vpSurfTm, crRef, dPar, Pt5ax))
+      if ( ProjectPointOnSurf( ptP, vpSurfTm, crRef, dPar, bFromVsTo, Pt5ax))
          vPt5ax.emplace_back( Pt5ax) ;
      // passo al successivo
       bFound = PL.GetNextUPoint( &dPar, &ptP) ;
@@ -823,7 +930,8 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const ICur
 
 //----------------------------------------------------------------------------
 static bool
-ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const SurfTriMesh& stmRef, double dPar, Point5ax& Pt5ax)
+ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const SurfTriMesh& stmRef, double dPar, bool bFromVsTo,
+                    Point5ax& Pt5ax)
 {
   // punto sulla superficie guida a minima distanza
    DistPointSurfTm dPS( ptP, stmRef) ;
@@ -850,23 +958,48 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const SurfT
       for ( int i = 0 ; i < ssize( vpStm) ; ++ i) {
          ILSIVECTOR vIntRes ;
          if ( IntersLineSurfTm( ptP, vtLine, dLineLen, *vpStm[i], vIntRes, false)) {
-           // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
-            int nI = ssize( vIntRes) - 1 ;
-            while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
-               --nI ;
-           // se trovata
-            if ( nI >= 0) {
-               if ( nInd < 0) {
-                  IntRes = vIntRes[nI] ;
-                  nInd = i ;
-               }
-               else {
-                  double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
-                  double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
-                  if ( dU > dUref) {
+           // se dalla superficie
+            if ( bFromVsTo) {
+              // cerco la prima intersezione valida a partire dall'ultima (è la più alta)
+               int nI = ssize( vIntRes) - 1 ;
+               while ( nI >= 0  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+                  --nI ;
+              // se trovata
+               if ( nI >= 0) {
+                  if ( nInd < 0) {
                      IntRes = vIntRes[nI] ;
                      nInd = i ;
                   }
+                  else {
+                     double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU2 : IntRes.dU) ;
+                     double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU2 : vIntRes[nI].dU) ;
+                     if ( dU > dUref) {
+                        IntRes = vIntRes[nI] ;
+                        nInd = i ;
+                     }
+                  }
+               }
+            }
+           // altrimenti verso la superficie
+            else {
+              // cerco la prima intersezione valida a partire dalla prima (è la più alta)
+               int nI = 0 ;
+               while ( nI < ssize( vIntRes)  &&  abs( vIntRes[nI].dCosDN) < COS_ANG_LIM)
+                  ++nI ;
+              // se trovata
+               if ( nI < ssize( vIntRes)) {
+                  if ( nInd < 0) {
+                     IntRes = vIntRes[nI] ;
+                     nInd = i ;
+                  }
+                  else {
+                     double dUref = (( IntRes.nILTT == ILTT_SEGM || IntRes.nILTT == ILTT_SEGM_ON_EDGE) ? IntRes.dU : IntRes.dU2) ;
+                     double dU = (( vIntRes[nI].nILTT == ILTT_SEGM || vIntRes[nI].nILTT == ILTT_SEGM_ON_EDGE) ? vIntRes[nI].dU : vIntRes[nI].dU2) ;
+                     if ( dU < dUref) {
+                        IntRes = vIntRes[nI] ;
+                        nInd = i ;
+                     }
+                  }
                }
             }
          }
@@ -911,7 +1044,7 @@ ProjectPointOnSurf( const Point3d& ptP, const CISRFTMPVECTOR& vpStm, const SurfT
 //----------------------------------------------------------------------------
 bool
 ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const ISurf& sfRef,
-                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, PNT5AXVECTOR& vPt5ax)
+                    double dLinTol, double dMaxSegmLen, bool bSharpEdges, bool bFromVsTo, PNT5AXVECTOR& vPt5ax)
 {
   // sistemazioni per tipo di superficie
    CISRFTMPVECTOR vpSurfTm ;
@@ -983,7 +1116,7 @@ ProjectCurveOnSurf( const ICurve& crCrv, const CISURFPVECTOR& vpSurf, const ISur
    while ( bFound) {
      // se trovo proiezione, la salvo
       Point5ax Pt5ax ; 
-      if ( ProjectPointOnSurf( ptP, vpSurfTm, *pRefTm, dPar, Pt5ax))
+      if ( ProjectPointOnSurf( ptP, vpSurfTm, *pRefTm, dPar, bFromVsTo, Pt5ax))
          vPt5ax.emplace_back( Pt5ax) ;
      // passo al successivo
       bFound = PL.GetNextUPoint( &dPar, &ptP) ;

RotationMinimizingFrame.cpp

@@ -92,11 +92,18 @@ RotationMinimizingFrame::GetFrameAtParam( const Frame3d& frAct, const double dPa
    Vector3d vtCurrR = frAct.VersX() ;
    Vector3d vtCurrT = frAct.VersZ() ;
 
-  // punto i-esimo sulla curva e suo vettore tangente
+  // punto i-esimo sulla curva e suo vettore tangente medio
+   Point3d ptNextM, ptNextP ;
+   Vector3d vtNextM, vtNextP ;
+   if ( ! m_pCrv->GetPointD1D2( dParNext, ICurve::FROM_MINUS, ptNextM, &vtNextM)  ||
+        ! m_pCrv->GetPointD1D2( dParNext, ICurve::FROM_PLUS, ptNextP, &vtNextP)  ||
+        ! vtNextM.Normalize()  ||  ! vtNextP.Normalize())
+      return false ;
    Point3d ptNext ;
    Vector3d vtNextT ;
-   if ( ! m_pCrv->GetPointD1D2( dParNext, ICurve::FROM_MINUS, ptNext, &vtNextT)  ||
-        ! vtNextT.Normalize())
+   ptNext = Media( ptNextM, ptNextP) ;
+   vtNextT = Media( vtNextM, vtNextP) ;
+   if ( ! vtNextT.Normalize())
       return false ;
 
   // controllo per casi degeneri

SbzFromCurves.cpp

@@ -733,6 +733,42 @@ GetSurfBezierRuled( const ICurve* pCurve1, const ICurve* pCurve2, int nType, dou
    return Release( pSbz) ;
 }
 
+//-------------------------------------------------------------------------------
+ISurfBezier*
+GetSurfBezierRuledSmooth( const ICurve* pCurve1, const ICurve* pCurve2, BIPNTVECTOR& vSyncLines, double dSampleLen)
+{
+   // verifica parametri
+   if ( pCurve1 == nullptr  ||  pCurve2 == nullptr)
+      return nullptr ;
+
+   // dLinTol servirà quando ci sarà la funzione ApproxWithCurveBezier
+   // se la curva è già una bezier singola la tengo, sennò la converto
+   PtrOwner<ICurveComposite> pCC1( CreateCurveComposite()) ;
+   if ( pCurve1->GetType() != CRV_BEZIER)
+      pCC1->AddCurve( CurveToBezierCurve( pCurve1, 3, false)) ;
+   else
+      pCC1->AddCurve( pCurve1->Clone()) ;
+   if ( IsNull( pCC1)  ||  ! pCC1->IsValid())
+      return nullptr ;
+
+   // se la curva è già una bezier singola la tengo, sennò la converto
+   PtrOwner<ICurveComposite> pCC2( CreateCurveComposite()) ;
+   if ( pCurve2->GetType() != CRV_BEZIER)
+      pCC2->AddCurve( CurveToBezierCurve( pCurve2, 3, false)) ;
+   else
+      pCC2->AddCurve( pCurve2->Clone()) ;
+   if ( IsNull( pCC2)  ||  ! pCC2->IsValid())
+      return nullptr ;
+
+   // creo e setto la superficie trimesh
+   PtrOwner<SurfBezier> pSbz( CreateBasicSurfBezier()) ;
+   if ( IsNull( pSbz)  ||  ! pSbz->CreateSmoothRuledByTwoCurves( pCC1, pCC2, dSampleLen, vSyncLines))
+      return nullptr ;
+
+   // restituisco la superficie
+   return Release( pSbz) ;
+}
+
 //-------------------------------------------------------------------------------
 ISurfBezier*
 GetSurfBezierRuledGuided( const ICurve* pCurve1, const ICurve* pCurve2, const BIPNTVECTOR& vCrv, double dLinTol)

SurfAux.cpp

@@ -29,6 +29,7 @@
 
 #define SAVEMKUNIF_CRVS 0
 #if SAVEMKUNIF_CRVS
+   std::vector<IGeoObj*> vGeo ;
    #include "/EgtDev/Include/EGkGeoObjSave.h"
 #endif
 
@@ -618,7 +619,7 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
 
 #if SAVEMKUNIF_CRVS
    //debug
-   vector<IGeoObj*> vGeo ;
+   vGeo.clear() ;
    for( int i = 0 ; i < ssize( vLoop); ++i){
       vGeo.push_back(vLoop[i]->Clone()) ;
    }
@@ -632,7 +633,7 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
          nDir == 0 ? bRescaledU = true : bRescaledV = true ;
          // creo il vettore delle curve all'interno di una striscia
          ICRVCOMPOPOVECTOR vCrvStrip ; 
-         for ( int p = 0 ; p < (int)vU.size() - 1 ; ++p) {
+         for ( int p = 0 ; p < ssize(vU) - 1 ; ++p) {
             double dLenStrip = abs( vU[p+1] - vU[p]) ;
             if ( dLenStrip < EPS_SMALL)
                continue ;
@@ -654,24 +655,85 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
             for ( int l = 0 ; l < ssize( vLoop); ++l) {
                #if SAVEMKUNIF_CRVS
                   //debug
-                  vector<IGeoObj*> vGeo ;
+                  vGeo.clear() ;
                   vGeo.push_back(pTrimMask->Clone()) ;
                   vGeo.push_back(vLoop[l]->Clone()) ;
                   SaveGeoObj( vGeo, "D:\\Temp\\bezier\\import3dm\\trim_error\\failed_trim_crv_inters.nge") ;
                   //debug
                #endif
-               IntersCurveCurve icc( *pTrimMask, *vLoop[l]) ;
-               CRVCVECTOR vCurveClass ;
-               icc.GetCurveClassification( 1, 10 * EPS_SMALL, vCurveClass) ;
-               for( int i = 0 ; i < ssize( vCurveClass); ++i) {
-                  if( vCurveClass[i].nClass == CRVC_IN  ||  vCurveClass[i].nClass == CRVC_ON_P)
-                     vCrvStrip.emplace_back( ConvertCurveToComposite( vLoop[l]->CopyParamRange( vCurveClass[i].dParS, vCurveClass[i].dParE))) ;
+               IntersCurveCurve icc( *vLoop[l], *pTrimMask) ;
+               int nInters = icc.GetIntersCount() ;
+               ICCIVECTOR vICCI ;
+               for ( int i = 0 ; i < nInters ; ++i) {
+                  IntCrvCrvInfo icci ; icc.GetIntCrvCrvInfo( i, icci) ;
+                  vICCI.push_back( std::move( icci)) ;
+               }
+               CRVCVECTOR vCrvClass, vMaskClass ;
+               icc.GetCurveClassification( 0, EPS_SMALL, vCrvClass) ;
+               icc.GetCurveClassification( 1, EPS_SMALL, vMaskClass) ;
+               // se dei pezzi di trim risultano esterni allo spazio parametrico tengo il bordo della maschera di trim
+               double dLastParam1 = 0 ;
+               double dStartA = 0, dEndA = 0 ; vLoop[l]->GetDomain( dStartA, dEndA) ;
+               double dEndB = 4 ;
+               for ( int i = 0 ; i < ssize( vCrvClass); ++i) {
+                  if ( vCrvClass[i].nClass == CRVC_IN  ||  vCrvClass[i].nClass == CRVC_ON_P) {
+                     vCrvStrip.emplace_back( ConvertCurveToComposite( vLoop[l]->CopyParamRange( vCrvClass[i].dParS, vCrvClass[i].dParE))) ;
+         
+                     for ( int j = 0 ; j < ssize( vICCI) ; ++j) {
+                        int k = vICCI[j].bOverlap ? 1 : 0 ;
+                        if ( abs( vICCI[j].IciA[k].dU - vCrvClass[i].dParE) < EPS_PARAM) {
+                           dLastParam1 = vICCI[j].IciB[k].dU ;
+                           break ;
+                        }
+                     }
+                  }
+                  else if ( vCrvClass[i].nClass == CRVC_OUT  &&  ( p == 0  ||  p == ssize(vU) - 2)){
+                     double dMin, dMax ;
+                     if ( p == 0) {
+                        dMin = nDir == 0 ? 3 : 0 ;
+                        dMax = nDir == 0 ? 4 : 1 ;
+                     }
+                     else {
+                        dMin = nDir == 0 ? 1 : 2 ;
+                        dMax = nDir == 0 ? 2 : 3 ;
+                     }
+                     // aggiungo la parte di curva di edge al posto della parte di curva che esce dal parametrico
+                     // se non ho ancora aggiunto un tratto parto dal primo punto di intersezione
+                     if ( ssize( vCrvStrip) == 0) {
+                        double dPar0 = vCrvClass[i].dParS ;
+                        for ( int j = 0 ; j < ssize( vICCI) ; ++j) {
+                           int k = vICCI[j].bOverlap ? 1 : 0 ;
+                           if ( abs(vICCI[j].IciA[k].dU - dPar0) < EPS_PARAM  ||
+                               ( abs( dEndA - vICCI[j].IciA[k].dU - dPar0) < EPS_PARAM)) {
+                              if ( abs( dEndB - vICCI[j].IciB[k].dU) < EPS_PARAM)
+                                 dLastParam1 = 0 ;
+                              else
+                                 dLastParam1 = vICCI[j].IciB[k].dU ;
+                              break ;
+                           }
+                        }
+                     }
+                     int c = 0 ;
+                     while ( c < ssize( vMaskClass) - 1 &&  abs( vMaskClass[c].dParS - dLastParam1) > EPS_PARAM)
+                        ++c ;
+
+                     if ( vMaskClass[c].nClass == CRVC_IN  &&  vMaskClass[c].dParS < dMax  &&  vMaskClass[c].dParS >= dMin) {
+                        vCrvStrip.emplace_back( ConvertCurveToComposite( pTrimMask->CopyParamRange( vMaskClass[c].dParS, vMaskClass[c].dParE))) ;
+                        dLastParam1 = vMaskClass[c].dParE ;
+                        // se sono alla fine curva verifico se devo aggiungere anche un pezzo di inizio
+                        if ( dLastParam1 == dEndB  &&  vMaskClass[0].nClass == CRVC_IN) {
+                           c = 0 ;
+                           vCrvStrip.emplace_back( ConvertCurveToComposite( pTrimMask->CopyParamRange( vMaskClass[c].dParS, vMaskClass[c].dParE))) ;
+                           dLastParam1 = vMaskClass[c].dParE ;
+                        }
+                     }
+                  }
                }
             }
 
             #if SAVEMKUNIF_CRVS
                //debug
-               vector<IGeoObj*> vGeo ;
+               vGeo.clear() ;
                for( int i = 0 ; i < ssize( vCrvStrip); ++i){
                   vGeo.push_back(vCrvStrip[i]->Clone()) ;
                }
@@ -694,25 +756,27 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
                      return false ;
                }
 
-               // prima di riunire le curve al resto devo traslarle sul bordo destro della superificie che sto ricostruendo
+               // prima di riunire le curve al resto devo traslarle sul bordo destro della superificie che sto ricostruendo (nDir == 0)
+               // oppure sul bordo superiore ( nDir == 1)
                Point3d pt ;
-               nDir == 0 ? pt.Set( abs(vU[p] - vU.front()), 0, 0) : pt.Set( 0,abs(vU[p] - vU.front()), 0) ;
-               if ( nDir == 0)
-                  pt.Scale( GLOB_FRM, SBZ_TREG_COEFF / dLenStrip, 1, 1) ;
-               else
-                  pt.Scale( GLOB_FRM, 1, SBZ_TREG_COEFF / dLenStrip, 1) ;
-
                Vector3d vtJoin ;
-               if ( nDir == 0)
+               if ( nDir == 0) {
+                  pt.Set( abs( vU[p] - vU.front()), 0, 0) ;
+                  pt.Scale( GLOB_FRM, SBZ_TREG_COEFF / dLenStrip, 1, 1) ;
                   vtJoin.Set( p * SBZ_TREG_COEFF - pt.x, 0, 0) ;
-               else
+               }
+               else {
+                  pt.Set( 0, abs(vU[p] - vU.front()), 0) ;
+                  pt.Scale( GLOB_FRM, 1, SBZ_TREG_COEFF / dLenStrip, 1) ;
                   vtJoin.Set( 0, p  * SBZ_TREG_COEFF - pt.y, 0) ;
+               }
+
                for( int i = 0 ; i < ssize( vCrvStrip); ++i)
                   vCrvStrip[i]->Translate( vtJoin) ;
 
             #if SAVEMKUNIF_CRVS
                //debug
-               vector<IGeoObj*> vGeo ;
+               vGeo.clear() ;
                for( int i = 0 ; i < ssize( vCrvStrip); ++i){
                   vGeo.push_back(vCrvStrip[i]->Clone()) ;
                }
@@ -725,7 +789,7 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
                if ( ! vUniformedCurves.empty()  ||  ! vCrvStrip.empty()) {
                   #if SAVEMKUNIF_CRVS
                      //debug
-                     vector<IGeoObj*> vGeo ;
+                     vGeo.clear() ;
                      for( int i = 0 ; i < ssize( vUniformedCurves); ++i){
                         vGeo.push_back(vUniformedCurves[i]->Clone()) ;
                      }
@@ -758,6 +822,20 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
                   ICRVCOMPOPOVECTOR vNewCrv ;
                   int nCrvPrec = ssize( vUniformedCurves) ;
                   while ( chainCrv.GetChainFromNear( ORIG, false, vIds)) {
+                     // se ho una solo curva piccola allora la salto
+                     if ( ssize(vIds) == 1) {
+                           double dLen = 0 ; 
+                           int nId = vIds[0] - 1 ;
+                           bool bSkip = false ;
+                           if ( nId < nCrvPrec)
+                              bSkip = vUniformedCurves[nId]->GetLength( dLen) &&  dLen < dChainTol ;
+                           else
+                              bSkip = vCrvStrip[nId - ssize(vUniformedCurves)]->GetLength(dLen) && dLen < dChainTol ;
+                           
+                           if ( bSkip)
+                              continue ;
+                     }
+
                      vNewCrv.emplace_back( CreateBasicCurveComposite()) ;
                      for ( int nId : vIds) {
                         nId -= 1 ;
@@ -767,6 +845,16 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
                            vNewCrv.back()->AddCurve( Release( vCrvStrip[nId - ssize( vUniformedCurves)]), true, dChainTol) ;
                      }
                   }
+                  #if SAVEMKUNIF_CRVS
+                     //debug
+                     vGeo.clear() ;
+                     for( int i = 0 ; i < ssize( vNewCrv); ++i){
+                        vGeo.push_back(vNewCrv[i]->Clone()) ;
+                     }
+                     SaveGeoObj( vGeo, "D:\\Temp\\bezier\\import3dm\\trim_error\\trim_crv_unif_AFTERchain.nge") ;
+                     //debug
+                  #endif
+
                   // aggiorno le curve 
                   vUniformedCurves.clear() ;
                   vUniformedCurves.swap( vNewCrv)  ;
@@ -799,7 +887,7 @@ MakeUniform( ISurfFlatRegion*& pSfr, bool& bRescaled, const DBLVECTOR& vU0, cons
 
       // controllo che tutte le curve siano chiuse, sennò vuol dire che ho perso qualche pezzo durante le intersezioni
       for ( int i = 0 ; i < ssize( vUniformedCurves); ++i) {
-         if ( ! vUniformedCurves[i]->IsClosed())
+         if ( ! vUniformedCurves[i]->IsClosed()  &&  ! vUniformedCurves[i]->Close())
             return false ;
       }
 

SurfBezier.h

@@ -148,11 +148,14 @@ class SurfBezier : public ISurfBezier, public IGeoObjRW
       bool CreateByPointCurve( const Point3d& pt, const ICurve* pCurve) override ;
       bool CreateByTwoCurves( const ICurve* pCurve1, const ICurve* pCurve2, int nType) override ;
       bool CreateBySetOfCurves( const ICURVEPOVECTOR& vCrvBez, bool bReduceToDeg3) override ;
-      PNTVECTOR GetAllControlPoints( void) const ;
+      PNTVECTOR GetAllControlPoints( void) const override ;
       bool GetAllPatchesIsocurves( bool bUorV, ICURVEPOVECTOR& vCrv) const ;
       bool CreateByIsoParamSet( const ICurve* pCurve0, const ICurve* pCurve1, const BIPNTVECTOR& vCrv) ;
       bool RemoveCollapsedSpans( void) override ;
       bool SwapParameters( void) ;
+      bool LimitSurfToTrimmedRegion( void) override ;
+      bool CreateSmoothRuledByTwoCurves( const ICurve* pCurve0, const ICurve* pCurve1, double dSampleLen) override ;
+      bool CreateSmoothRuledByTwoCurves( const ICurve* pCurve0, const ICurve* pCurve1, double dSampleLen, BIPNTVECTOR& vSyncLines) override ;
 
    public :                      // IGeoObjRW
       int  GetNgeId( void) const override ;

SurfFlatRegion.cpp

@@ -29,7 +29,9 @@
 #include "/EgtDev/Include/EgtPointerOwner.h"
 
 #define SAVECLASSCRV 0
-#if SAVECLASSCRV
+#define SAVEADJUSTCRV 0
+#if SAVECLASSCRV || SAVEADJUSTCRV
+std::vector<IGeoObj*> vGeo ;
 #include "/EgtDev/Include/EGkGeoObjSave.h"
 #endif
 
@@ -112,8 +114,20 @@ SurfFlatRegion::AddExtLoop( ICurve* pCrv)
    pMyCrv->SetThickness( 0) ;
   // rimuovo eventuali sovrapposizioni (calcolate nel suo piano)
    ICURVEPLIST CrvLst ;
+
+#if SAVEADJUSTCRV
+   SaveGeoObj( pMyCrv->Clone(), "D:\\Temp\\inters\\CrvCrvInters\\before_adjust.nge") ;
+#endif
+
    if ( ! AdjustLoops( Release( pMyCrv), CrvLst, true))
       return false ;
+
+#if SAVEADJUSTCRV
+   for ( auto& pSingCrv : CrvLst)
+      vGeo.push_back( pSingCrv->Clone()) ;
+   SaveGeoObj( vGeo, "D:\\Temp\\inters\\CrvCrvInters\\after_adjust.nge") ;
+#endif
+
   // aggiungo le singole curve
    int nExtAdded = 0 ;
    bool bOk = true ;
@@ -174,14 +188,18 @@ SurfFlatRegion::AddSimpleExtLoop( ICurve* pCrv, bool& bAdded)
    Vector3d vtExtr ;
    if ( pMyCrv->GetExtrusion( vtExtr)  &&  ! vtExtr.IsSmall())
       pMyCrv->SetExtrusion( Z_AX) ;
-  // verifico non abbia auto-intersezioni che si attraversano o si sovrappongano
-   SelfIntersCurve sInt( *pMyCrv) ;
-   if ( sInt.GetCrossOrOverlapIntersCount() > 0)
-      return false ;
+
   // verifico che sia esterna alle curve esterne degli altri chunk
    bool bOk = true ;
    CRVCVECTOR ccClass ;
    for ( auto i : m_vExtInd) {
+#if SAVEADJUSTCRV
+         vGeo.clear() ;
+         vGeo.push_back( pMyCrv->Clone()) ;
+         vGeo.push_back( m_vpLoop[i]->Clone()) ;
+         SaveGeoObj( vGeo, "D:\\Temp\\inters\\CrvCrvInters\\during_add_simpleExt.nge") ;
+#endif
+
       IntersCurveCurve ccInt( *pMyCrv, *m_vpLoop[i]) ;
       if ( ccInt.GetCrossOrOverlapIntersCount() > 0  ||
            ! ccInt.GetCurveClassification( 0, EPS_SMALL, ccClass)  ||
@@ -221,14 +239,9 @@ SurfFlatRegion::AddSimpleExtLoop( ICurve* pCrv, bool& bAdded)
 bool
 SurfFlatRegion::MyAddExtLoop( ICurve* pCrv)
 {
-   try {
-      m_vpLoop.push_back( pCrv) ;
-      m_vExtInd.push_back( int( m_vpLoop.size()) - 1) ;
-      m_nStatus = OK ;
-   }
-   catch (...) {
-      return false ;
-   }
+   m_vpLoop.push_back( pCrv) ;
+   m_vExtInd.push_back( int( m_vpLoop.size()) - 1) ;
+   m_nStatus = OK ;
 
    return true ;
 }
@@ -309,10 +322,7 @@ SurfFlatRegion::AddSimpleIntLoop( ICurve* pCrv)
   // sistemo il senso di rotazione (deve essere CW -> se N==Z+ area < 0, se N==Z- area > 0)
    if ( ( plPlane.GetVersN().z > 0  &&  dArea > 0)  ||  ( plPlane.GetVersN().z < 0  &&  dArea < 0))
       pMyCrv->Invert() ;
-  // verifico non abbia auto-intersezioni
-   SelfIntersCurve sInt( *pMyCrv) ;
-   if ( sInt.GetCrossOrOverlapIntersCount() > 0)
-      return false ;
+
   // ricerca del chunk in cui andrebbe inserito
    int nChunk = -1 ;
    for ( int i = 0 ; i < int( m_vExtInd.size()) ; ++ i) {
@@ -359,23 +369,18 @@ SurfFlatRegion::AddSimpleIntLoop( ICurve* pCrv)
 bool
 SurfFlatRegion::MyAddIntLoop( ICurve* pCrv, int nChunk)
 {
-   try {
-     // se da aggiungere all'ultimo chunk
-      if ( nChunk == -1)
-         m_vpLoop.push_back( pCrv) ;
-     // altrimenti aggiungo al chunck indicato
-      else {
-         int nLoopCnt = GetLoopCount( nChunk) ;
-         if ( nLoopCnt == 0)
-            return false ;
-         int nOffset = m_vExtInd[nChunk] + nLoopCnt ;
-         m_vpLoop.insert( m_vpLoop.begin() + nOffset, pCrv) ;
-         for ( int i = nChunk + 1 ; i < int( m_vExtInd.size()) ; ++ i)
-            ++ m_vExtInd[i] ;
-      }
-   }
-   catch (...) {
-      return false ;
+   //se da aggiungere all'ultimo chunk
+   if ( nChunk == -1)
+      m_vpLoop.push_back( pCrv) ;
+   //altrimenti aggiungo al chunck indicato
+   else {
+      int nLoopCnt = GetLoopCount( nChunk) ;
+      if ( nLoopCnt == 0)
+         return false ;
+      int nOffset = m_vExtInd[nChunk] + nLoopCnt ;
+      m_vpLoop.insert( m_vpLoop.begin() + nOffset, pCrv) ;
+      for ( int i = nChunk + 1 ; i < int( m_vExtInd.size()) ; ++ i)
+         ++ m_vExtInd[i] ;
    }
 
    return true ;
@@ -1551,7 +1556,7 @@ SurfFlatRegion::GetChunkSimpleClassification( int nChunk, const ISurfFlatRegion&
   // classifico il loop esterno del chunk della prima regione rispetto a quello del chunk della seconda
    IntersCurveCurve ccInt( *pCrv1Loc, *pCrv2Loc) ;
    int nClass = ccInt.GetRegionCurveClassification() ;
-   switch ( nClass){
+   switch ( nClass) {
    default :   // CCREGC_NULL
       return REGC_NULL ;
    case CCREGC_IN1 :
@@ -1564,7 +1569,141 @@ SurfFlatRegion::GetChunkSimpleClassification( int nChunk, const ISurfFlatRegion&
       return REGC_OUT ;
    case CCREGC_INTERS :
       return REGC_INTERS ;
-    }
+   }
+}
+
+//----------------------------------------------------------------------------
+bool
+SurfFlatRegion::CheckChunkInterference( int nChunk, const ISurfFlatRegion& Other, int nOthChunk, bool& bInterference) const
+{
+   bInterference = false ;
+  // verifico lo stato e il numero di chunk
+   if ( m_nStatus != OK  ||  m_vpLoop.empty()  ||  nChunk >= GetChunkCount())
+      return false ;
+  // recupero rappresentazione base dell'altra regione
+   const SurfFlatRegion& Reg2 = *GetBasicSurfFlatRegion( &Other) ;
+  // verifico lo stato e il numero di chunk dell'altra regione
+   if ( Reg2.m_nStatus != OK  ||  Reg2.m_vpLoop.empty()  ||  nOthChunk >= Reg2.GetChunkCount())
+      return false ;
+
+  // verifico che le due regioni giacciano in piani paralleli
+   if ( ! AreSameVectorApprox( m_frF.VersZ(), Reg2.m_frF.VersZ()))
+      return false ;
+
+  // classifico il loop esterno del chunk della prima regione rispetto a quello del chunk della seconda
+   int nClass = GetChunkSimpleClassification( nChunk, Other, nOthChunk) ;
+   if ( nClass == REGC_NULL)
+      return false ;
+  // se le regioni non hanno isole, allora ho già identificato se i Chunks fanno interferenza
+   int nLoopCnt = GetLoopCount( nChunk) ;
+   int nOtherLoopCnt = Other.GetLoopCount( nOthChunk) ;
+   if ( nLoopCnt == 1  &&  nOtherLoopCnt == 1) {
+      bInterference = ( nClass != REGC_OUT) ;
+      return true ;
+   }
+
+  // --- a prescindere dalle isole presenti nei 2 Chunks in esame :
+  // se i due loop esterni si intersecano tra loro o sono gli stessi, allora fanno per forza interferenza
+   if ( nClass == REGC_INTERS  ||  nClass == CCREGC_SAME) {
+      bInterference = true ;
+      return true ;
+   }
+  // se invece sono esterni tra loro, allora non c'è interferenza
+   else if ( nClass == REGC_OUT)
+      return true ;
+  // --- Analisi del loop interni :
+  // se la curva esterna corrente è interna alla curva esterna dell'altro chunk
+   else if ( nClass == REGC_IN1) {
+     // se l'altro chunk non ha isole, c'è interferenza (a prescinere da numero di loop interni del primo chunk)
+      if ( nOtherLoopCnt == 1) {
+         bInterference = true ;
+         return true ;
+      }
+     // curva esterna del chunk della prima regione (ovviamente già in locale al riferimento intrinseco)
+      const ICurve* pCrv1Loc = GetMyLoop( nChunk, 0) ;
+     // per ogni loop interno (isole)
+      for ( int i = 1 ; i < nOtherLoopCnt ; ++ i) {
+         const ICurve* pCrv2Loc = nullptr ;
+         PtrOwner<ICurve> pCopyCrv ;
+         if ( AreSameFrame( m_frF, Reg2.m_frF))
+            pCrv2Loc = Reg2.GetMyLoop( nOthChunk, i) ;
+         else {
+            pCopyCrv.Set( Reg2.GetMyLoop( nOthChunk, i)->Clone()) ;
+            if ( IsNull( pCopyCrv))
+               return false ;
+            pCopyCrv->LocToLoc( Reg2.m_frF, m_frF) ;
+            pCrv2Loc = pCopyCrv ;
+         }
+        // classifico il loop esterno del chunk della prima regione rispetto all'interno corrente del chunk della seconda
+         IntersCurveCurve ccInt( *pCrv1Loc, *pCrv2Loc) ;
+         int nInternalClass = ccInt.GetRegionCurveClassification() ;
+        // se le curve non sono classificabili, errore
+         if ( nInternalClass == REGC_NULL)
+            return false ;
+        // se la curva di bordo corrente è interna (le isole girano al contrario) all'isola corrente
+         else if ( nInternalClass == REGC_IN1)
+            ; // non faccio nulla, potrebbe non essere l'isola adatta per la classificazione
+        // se la curva di bordo corrente è esterna (le isole girano al contrario) all'isola corrente, allora non ho interferenza
+         else if ( nInternalClass == REGC_OUT)
+            return true ;
+        // se la curva di bordo corrente interseca l'isola o coincide con essa allora c'è interferenza
+         else if ( nInternalClass == REGC_INTERS  ||  nInternalClass == REGC_SAME) {
+            bInterference = true ;
+            return true ;
+         }
+        // negli altri casi ho un orientamento errato dei loop o delle regioni
+         else
+            return false ;
+      }
+   }
+  // se la curva esterna dell'altro chunk è interna alla curva esterna corrente
+   else if ( nClass == REGC_IN2) {
+     // se l'altro chunk non ha isole, c'è interferenza
+      if ( nLoopCnt == 1) {
+         bInterference = true ;
+         return true ;
+      }
+     // curva esterna del chunk della prima regione (ovviamente già in locale al riferimento intrinseco)
+      const ICurve* pCrv2Loc = Reg2.GetMyLoop( nChunk, 0) ;
+     // per ogni loop interno (isole)
+      for ( int i = 1 ; i < nLoopCnt ; ++ i) {
+         const ICurve* pCrv1Loc = nullptr ;
+         PtrOwner<ICurve> pCopyCrv ;
+         if ( AreSameFrame( Reg2.m_frF, m_frF))
+            pCrv1Loc = GetMyLoop( nOthChunk, i) ;
+         else {
+            pCopyCrv.Set( GetMyLoop( nOthChunk, i)->Clone()) ;
+            if ( IsNull( pCopyCrv))
+               return false ;
+            pCopyCrv->LocToLoc( m_frF, Reg2.m_frF) ;
+            pCrv1Loc = pCopyCrv ;
+         }
+        // classifico il loop esterno del chunk della prima regione rispetto a quello del chunk della seconda
+         IntersCurveCurve ccInt( *pCrv2Loc, *pCrv1Loc) ;
+         int nInternalClass = ccInt.GetRegionCurveClassification() ;
+        // se le curve non sono classificabili, errore
+         if ( nInternalClass == REGC_NULL)
+            return false ;
+        // se la curva di bordo corrente è interna (le isole girano al contrario) all'isola corrente
+         else if ( nInternalClass == REGC_IN1)
+            ; // non faccio nulla, potrebbe non essere l'isola adatta per la classificazione
+        // se la curva di bordo corrente è esterna (le isole girano al contrario) all'isola corrente, allora non ho interferenza
+         else if ( nInternalClass == REGC_OUT)
+            return true ;
+        // se la curva di bordo corrente interseca l'isola o coincide con essa allora c'è interferenza
+         else if ( nInternalClass == REGC_INTERS  ||  nInternalClass == REGC_SAME) {
+            bInterference = true ;
+            return true ;
+         }
+        // negli altri casi ho un orientamento errato dei loop o delle regioni
+         else
+            return false ;
+      }
+   }
+
+  // in questo la curva di bordo è interna ad ogni isola ma interna anche al loop esterno, quindi esiste interferenza
+   bInterference = true ;
+   return true ;
 }
 
 //----------------------------------------------------------------------------

SurfFlatRegion.h

@@ -107,6 +107,7 @@ class SurfFlatRegion : public ISurfFlatRegion, public IGeoObjRW
       bool GetChunkArea( int nChunk, double& dArea) const override ;
       bool GetChunkPerimeter( int nChunk, double& dLen) const override ;
       int  GetChunkSimpleClassification( int nChunk, const ISurfFlatRegion& Other, int nOthChunk) const override ;   // compare only outsides
+      bool CheckChunkInterference( int nChunk, const ISurfFlatRegion& Other, int nOthChunk, bool& bInterference) const override ;         // compare alls
       bool GetChunkMaxOffset( int nChunk, double& dOffs) const override ;
       int  GetLoopCount( int nChunk) const override ;
       int  GetLoopCurveCount( int nChunk, int nLoop) const override ;
@@ -139,6 +140,7 @@ class SurfFlatRegion : public ISurfFlatRegion, public IGeoObjRW
       SurfTriMesh* CalcAuxSurf( double dLinTol, double dAngTolDeg) const ;
 
    friend class MyCAvSimpleSurfFrMove ;
+   friend class MyCAvSurfFrMove ;
 
    private :
       enum Status { ERR = 0, OK = 1, TO_VERIFY = 2} ;

SurfFlatRegionBooleans.cpp

@@ -20,6 +20,12 @@
 #include "/EgtDev/Include/EGkIntervals.h"
 #include "/EgtDev/Include/EgtPointerOwner.h"
 
+#define SAVELOOPS 0
+#if SAVELOOPS
+std::vector<IGeoObj*> vGeo ;
+#include "/EgtDev/Include/EGkGeoObjSave.h"
+#endif
+
 using namespace std ;
 
 //----------------------------------------------------------------------------
@@ -172,6 +178,13 @@ SurfFlatRegion::Subtract( const ISurfFlatRegion& Other)
       pSfr.Set( new( nothrow) SurfFlatRegion) ;
    else
       pSfr.Set( MyNewSurfFromLoops( vpLoop)) ;
+
+#if SAVELOOPS
+   for (int i = 0 ; i < ssize( vpLoop) ; ++i)
+      vGeo.push_back( vpLoop[i]) ;
+   SaveGeoObj( vGeo, "D:\\Temp\\inters\\CrvCrvInters\\NewLoops.nge") ;
+#endif
+
    if ( IsNull( pSfr)) {
       MyTestAndDelete( vpCurve) ;
       MyTestAndDelete( vpLoop) ;

SurfTriMesh.cpp

@@ -1188,8 +1188,10 @@ SurfTriMesh::GetSilhouette( const Vector3d& vtDir, double dTol, POLYLINEVECTOR&
             pSfrTria->Offset( dTol, ICurve::OFF_FILLET) ;
             if ( IsNull( pSfr))
                pSfr.Set( pSfrTria) ;
-            else
-               pSfr->Add( *pSfrTria) ;
+            else {
+               if ( ! pSfr->Add( *pSfrTria))
+                  return false ;
+            }
          }
       }
      // passo al successivo
@@ -1201,14 +1203,18 @@ SurfTriMesh::GetSilhouette( const Vector3d& vtDir, double dTol, POLYLINEVECTOR&
       return false ;
 
   // Effettuo contro-offset
-   pSfr->Offset( -dTol, ICurve::OFF_EXTEND) ;
+   if ( ! pSfr->Offset( -dTol, ICurve::OFF_EXTEND))
+      return false ;
 
   // Recupero i contorni della regione
    for ( int i = 0 ; i < pSfr->GetChunkCount() ; ++ i) {
       for ( int j = 0 ; j < pSfr->GetLoopCount( i) ; ++ j) {
          PolyLine PL ;
-         if ( pSfr->ApproxLoopWithLines( i, j, LIN_TOL_STD, ANG_TOL_STD_DEG, ICurve::APL_STD, PL))
-            vPL.emplace_back( PL) ;
+         if ( ! pSfr->ApproxLoopWithLines( i, j, LIN_TOL_STD, ANG_TOL_STD_DEG, ICurve::APL_STD, PL)) {
+            vPL.clear() ;
+            return false ;
+         }
+         vPL.emplace_back( PL) ;
       }
    }
 
@@ -1259,8 +1265,10 @@ SurfTriMesh::GetSilhouette( const Plane3d& plPlane, double dTol, POLYLINEVECTOR&
                   pSfrTria->Offset( dTol, ICurve::OFF_FILLET) ;
                   if ( IsNull( pSfr))
                      pSfr.Set( pSfrTria) ;
-                  else
-                     pSfr->Add( *pSfrTria) ;
+                  else {
+                     if ( ! pSfr->Add( *pSfrTria))
+                        return false ;
+                  }
                }
             }
          }
@@ -1274,14 +1282,18 @@ SurfTriMesh::GetSilhouette( const Plane3d& plPlane, double dTol, POLYLINEVECTOR&
       return true ;
 
   // Effettuo contro-offset
-   pSfr->Offset( -dTol, ICurve::OFF_EXTEND) ;
+   if ( ! pSfr->Offset( -dTol, ICurve::OFF_EXTEND))
+      return false ;
 
   // Recupero i contorni della regione
    for ( int i = 0 ; i < pSfr->GetChunkCount() ; ++ i) {
       for ( int j = 0 ; j < pSfr->GetLoopCount( i) ; ++ j) {
          PolyLine PL ;
-         if ( pSfr->ApproxLoopWithLines( i, j, LIN_TOL_STD, ANG_TOL_STD_DEG, ICurve::APL_STD, PL))
-            vPL.emplace_back( PL) ;
+         if ( ! pSfr->ApproxLoopWithLines( i, j, LIN_TOL_STD, ANG_TOL_STD_DEG, ICurve::APL_STD, PL)) {
+            vPL.clear() ;
+            return false ;
+         }
+         vPL.emplace_back( PL) ;
       }
    }
 
@@ -3810,12 +3822,19 @@ SurfTriMesh::VerifyConnection( bool bShellsAndParts) const
       BBox3d b3Box ;
       PtrOwner<ISurfTriMesh> pStmShell ;
    } ;
+  // vettore di shell con vettori dei propri triangoli (per accelerare nei casi degeneri)  
+   INTMATRIX mShellTria( m_nShells) ;
+   for ( int i = 0 ; i < ssize( m_vTria) ; ++ i) {
+      if ( m_vTria[i].nShell < m_nShells)
+         mShellTria[m_vTria[i].nShell].push_back( i) ;
+   }
+  // classificazione delle shell
    vector<SHELLINFO> vOuterShells ;
    vector<SHELLINFO> vInnerShells ;
    INTVECTOR vOpenShells ;
    for ( int nSh = 0 ; nSh < m_nShells ; ++ nSh) {
      // se la shell è chiusa
-      if ( IsShellClosed( nSh)) {
+      if ( ssize( mShellTria[nSh]) >= 4  &&  IsShellClosed( nSh)) {
         // creo una superficie clonata dalla shell
          PtrOwner<ISurfTriMesh> pStmShell( CloneShell( nSh)) ;
          if ( IsNull( pStmShell)  ||  ! pStmShell->IsValid())
@@ -3827,7 +3846,9 @@ SurfTriMesh::VerifyConnection( bool bShellsAndParts) const
          BBox3d b3Box ;
          pStmShell->GetLocalBBox( b3Box, BBF_STANDARD) ;
         // la inserisco nel vettore opportuno
-         if ( dVol > 0)
+         if ( abs( dVol) < 1 * 1 * EPS_SMALL)
+            vOpenShells.push_back( nSh) ;
+         else if ( dVol > 0)
             vOuterShells.emplace_back( nSh, dVol, b3Box, Release( pStmShell)) ;
          else
             vInnerShells.emplace_back( nSh, dVol, b3Box, Release( pStmShell)) ;
@@ -3979,6 +4000,7 @@ SurfTriMesh::IsShellClosed( int nShell) const
       return false ;
   // ciclo sui triangoli della shell
    bool bClosed = true ;
+   int nTriaCnt = 0 ;
    for ( int i = 0 ; i < GetTriangleSize() ; ++ i) {
      // se triangolo non cancellato e della shell
       if ( m_vTria[i].nIdVert[0] != SVT_DEL  &&  m_vTria[i].nShell == nShell) {
@@ -3989,10 +4011,12 @@ SurfTriMesh::IsShellClosed( int nShell) const
             bClosed = false ;
             break ;  
          }
+         else
+            ++ nTriaCnt ;
       }
    }
   // restituisco il risultato
-   return bClosed ;
+   return ( bClosed  &&  nTriaCnt >= 4) ;
 }
 
 //----------------------------------------------------------------------------

Tree.cpp

@@ -352,10 +352,6 @@ Tree::SetSurf( const SurfBezier* pSrfBz, const Point3d& ptMin, const Point3d& pt
             }
            // se ho fatto solo 1 split orizzontale e ho due celle foglie nId = 0 e nId = 1
             if ( m_mTree.size() == 3  &&  ! m_mTree.at(-1).IsSplitVert()) {
-               m_mTree[0].m_nLeft = -1 ;
-               m_mTree[0].m_nRight = -1 ;
-               m_mTree[1].m_nLeft = -1 ;
-               m_mTree[1].m_nRight = -1 ;
                m_mTree[0].SetSplitDirVert( true) ;
                Split( 0) ;
                m_mTree[1].SetSplitDirVert( true) ;

Trimming.cpp

@@ -36,13 +36,13 @@
 #include "/EgtDev/Include/EGkIntersLineBox.h"
 #include "/EgtDev/Include/EGkIntersCurvePlane.h"
 #include "/EgtDev/Include/EGkSurfTriMeshAux.h"
+#include "/EgtDev/Include/EGkRotationMinimizingFrame.h"
 #include "/EgtDev/Include/EgtNumUtils.h"
 #include <thread>
 #include <future>
 #include <numeric>
 
 // -------------------------- Debug --------------------------------------------
-#define DEBUG 0
 #define DEBUG_BASIC_BORDERS 0
 #define DEBUG_CHAIN_CURVES 0
 #define DEBUG_ANG_APPROX 0
@@ -63,11 +63,12 @@
 #define DEBUG_EDGES 0
 #define DEBUG_SHAPE_STM 0
 #define DEBUG_HOLES 0
+#define DEBUG_SMOOTH_CURVATURE 0
 #if DEBUG_BASIC_BORDERS || DEBUG_CHAIN_CURVES || DEBUG_ANG_APPROX || DEBUG_BEZIER_INTERP || \
     DEBUG_FACE_SEARCH || DEBUG_FACE_SEARCH_TRIA_MODIF || DEBUG_BRK_POINTS || DEBUG_BRK_THICK || \
     DEBUG_BRK || DEBUG_BORDERS_BY_NORMALS || DEBUG_SYNC_POINTS || DEBUG_SYNC_INTERPOLATION || \
     DEBUG_BEZIER_RULED || DEBUG_CURVATURE || DEBUG_SIMPLE_PATCHES || DEBUG_SURF_PATCHES || \
-    DEBUG_RAW_EDGES || DEBUG_EDGES || DEBUG_SHAPE_STM || DEBUG_HOLES || DEBUG
+    DEBUG_RAW_EDGES || DEBUG_EDGES || DEBUG_SHAPE_STM || DEBUG_HOLES || DEBUG_SMOOTH_CURVATURE
    #include "CurveLine.h"
    #include "/EgtDev/Include/EGkGeoObjSave.h"
    #include "/EgtDev/Include/EgtPerfCounter.h"
@@ -284,6 +285,63 @@ GetPointSetByAngTol( const PolyLine& PL, double dAngTol, POLYLINEVECTOR& vPL)
    return true ;
 }
 
+////-----------------------------------------------------------------------------
+//// Funzione che approssima la curva di bordo per la costruzione della Bezier Ruled mediante
+//// Patches di curve di Bezier
+//static bool
+//ApproxBorder( ICurveComposite* pCrvCompo, double dLinTol, double dAngTol, double dAngTolSplit)
+//{
+//   // N.B.:in futuro bisognerebbe fare l'approssimazione direttamente con le bezier.
+//
+//  // Controllo dei parametri
+//   if ( pCrvCompo == nullptr  ||  ! pCrvCompo->IsValid())
+//      return false ;
+//
+//  // splitto la curva considerando la tolleranza angolare
+//   ICRVCOMPOPOVECTOR vCC ;
+//   SplitCurveCompoByAngTol( pCrvCompo, dAngTolSplit, vCC) ;
+//   #if DEBUG_BEZIER_INTERP
+//      VT.clear() ;
+//      for( int i = 0 ; i < ssize(vCC) ; ++i)
+//         VT.push_back( vCC[i]->Clone()) ;
+//      SaveGeoObj( VT, "D:\\Temp\\trimming\\AngBorderApprox.nge") ;
+//      VT.clear() ;
+//   #endif
+//
+//   pCrvCompo->Clear() ;
+//   
+//  // Ogni PolyLine ricavata viene approssimata con un tratto di Bezier
+//   const double MAXLEN = 1.5 ;
+//   for ( ICurveComposite* pCC : vCC) {
+//     // Se meno di due curve, non la considero ( non dovrebbe mai capitare )
+//      if ( pCC->GetCurveCount() < 2)
+//         continue ;
+//      PolyArc PA ;
+//      if ( ! pCC->ApproxWithArcs( dLinTol, dAngTol, PA))
+//         return false ;
+//      CurveComposite CrvTemp ;
+//      if ( ! CrvTemp.FromPolyArc( PA)  ||  ! CrvTemp.MergeCurves( dLinTol, dAngTol))
+//         return false ;
+//      #if DEBUG_BEZIER_INTERP
+//         VT.emplace_back( CrvTemp->Clone()) ;
+//      #endif
+//     // Converto in Bezier
+//      PtrOwner<ICurve> pCrvBz( CurveToBezierCurve( &CrvTemp)) ;
+//      if ( IsNull( pCrvBz)  ||  ! pCrvBz->IsValid()) {
+//         LOG_ERROR( GetEGkLogger(), "Error : converrting curve to bezier") ;
+//         return false ;
+//      }
+//     // Aggiungo il tratto approssimato alla curva finale complessiva
+//      if ( ! pCrvCompo->AddCurve( Release( pCrvBz)))
+//         return false ;
+//   }
+//   #if DEBUG_BEZIER_INTERP
+//      SaveGeoObj( VT, VC, "D:\\Temp\\trimming\\bezier_edge.nge") ;
+//   #endif
+//
+//   return ( pCrvCompo->IsValid()) ;
+//}
+
 //-----------------------------------------------------------------------------
 // Funzione che approssima la curva di bordo per la costruzione della Bezier Ruled mediante
 // Patches di curve di Bezier
@@ -3475,10 +3533,11 @@ IsBorderAButtonHole( const PolyLine& PL, double dLinTol, double dAngTol, Frame3d
 //-----------------------------------------------------------------------------
 static bool
 InterpolateSyncCurvesOnEndGuidePoints( const ICurveComposite* pGuide, const ICurveComposite* pOtherGuide,
-                                       const Plane3d& plStart, const Plane3d& plEnd, double dLinTol,
-                                       BIPNTVECTOR& vBiPts)
+                                       const Plane3d& plStart, const Plane3d& plEnd, const Vector3d vtAuxStart, const Vector3d vtAuxEnd,
+                                       double dLinTol, BIPNTVECTOR& vBiPts)
 {
    vBiPts.clear() ;
+   const double dLinAngTol = 15 * EPS_SMALL ; // tolleranza sulla lunghezza della corda dell'angolo di tolleranza
 
   // Verifico che le curve siano valide
    if ( pGuide == nullptr  ||  ! pGuide->IsValid()  ||
@@ -3508,52 +3567,134 @@ InterpolateSyncCurvesOnEndGuidePoints( const ICurveComposite* pGuide, const ICur
      // Interpolo le normali dei piani rispetto a tale valore
       Vector3d vtN = Media( plStart.GetVersN(), plEnd.GetVersN(), dInterPar) ;
       vtN.Normalize() ;
+      Vector3d vtAux = Media( vtAuxStart, vtAuxEnd, dInterPar) ; vtAux.Normalize() ;
      // Definisco il piano di intersezione
       Point3d ptCurr ;
       if ( ! pCrv->GetEndPoint( ptCurr))
          return false ;
+
+      // con i piani
       #if DEBUG_SYNC_INTERPOLATION
          Frame3d frPl ; frPl.Set( ptCurr, vtN) ;
          PtrOwner<IGeoFrame3d> frCurr( CreateGeoFrame3d()) ; frCurr->Set( frPl) ;
          VT.emplace_back( Release( frCurr)) ;
          VC.emplace_back( WHITE) ;
-         SaveGeoObj( VT, VC, "C:\\Temp\\SyncLinesPlanes.nge") ;
+         SaveGeoObj( VT, VC, "C:\\Temp\\trimming\\interpolate\\SyncLinesPlanes.nge") ;
       #endif
      // Recupero il parametro di intersezione tra la curva e il piano
-      #if 0
-         VT.clear() ; VC.clear() ;
-         PtrOwner<IGeoPoint3d> PT( CreateGeoPoint3d()) ; PT->Set( ptCurr) ;
-         VT.emplace_back( Release( PT)) ;
-         VC.emplace_back( AQUA) ;
-         PtrOwner<IGeoVector3d> VECT( CreateGeoVector3d()) ; VECT->Set( vtN) ;
-         VECT->ChangeBase( ptCurr) ;
-         PtrOwner<ICurveArc> pArc( CreateCurveArc()) ; pArc->Set( ptCurr, vtN, 1000.) ;
-         PtrOwner<ISurfFlatRegion> pSfrPlane( CreateSurfFlatRegion()) ;
-         pSfrPlane->AddExtLoop( Release( pArc)) ;
-         VT.emplace_back( Release( pSfrPlane)) ;
-         VC.emplace_back( Color( 0., 0., 0., .5)) ;
-         VT.emplace_back( Release( VECT)) ;
-         VC.emplace_back( BLUE) ;
-         VT.emplace_back( pOtherGuide->Clone()) ;
-         VC.emplace_back( WHITE) ;
-         SaveGeoObj( VT, VC, "C:\\Temp\\SyncLinesPlanes.nge") ;
-      #endif
-      IntersCurvePlane IntCP( *pOtherGuide, ptCurr, vtN) ;
-      if ( IntCP.GetIntersCount() == 0)
-         return false ; // ambiguità
-     // Recupero il punto della prima intersezione trovata
-      Point3d ptInt ;
-      double dPar ;
-      if ( ! IntCP.GetIntersPointNearTo( ptCurr, ptInt, dPar))
-         return false ;
       #if DEBUG_SYNC_INTERPOLATION
-         PtrOwner<IGeoPoint3d> ptG( CreateGeoPoint3d()) ; ptG->Set( ptInt) ;
-         VT.emplace_back( Release( ptG)) ;
-         VC.emplace_back( WHITE) ;
-         SaveGeoObj( VT, VC, "C:\\Temp\\SyncLinesPlanes.nge") ;
+         if ( false) {
+            VT.clear() ; VC.clear() ;
+            PtrOwner<IGeoPoint3d> PT( CreateGeoPoint3d()) ; PT->Set( ptCurr) ;
+            VT.emplace_back( Release( PT)) ;
+            VC.emplace_back( AQUA) ;
+            PtrOwner<IGeoVector3d> VECT( CreateGeoVector3d()) ; VECT->Set( vtN) ;
+            VECT->ChangeBase( ptCurr) ;
+            PtrOwner<ICurveArc> pArc( CreateCurveArc()) ; pArc->Set( ptCurr, vtN, 1000.) ;
+            PtrOwner<ISurfFlatRegion> pSfrPlane( CreateSurfFlatRegion()) ;
+            pSfrPlane->AddExtLoop( Release( pArc)) ;
+            VT.emplace_back( Release( pSfrPlane)) ;
+            VC.emplace_back( Color( 0., 0., 0., .5)) ;
+            VT.emplace_back( Release( VECT)) ;
+            VC.emplace_back( BLUE) ;
+            VT.emplace_back( pOtherGuide->Clone()) ;
+            VC.emplace_back( WHITE) ;
+            SaveGeoObj( VT, VC, "C:\\Temp\\trimming\\interpolate\\SyncLinesPlanes.nge") ;
+         }
       #endif
-     // Memorizzo tale punto
-      vBiPts.emplace_back( make_pair( ptCurr, ptInt)) ;
+
+      IntersCurvePlane IntCP( *pOtherGuide, ptCurr, vtN) ;
+      bool bFound = false ;
+      if ( IntCP.GetIntersCount() != 0) {
+        // Recupero il punto della prima intersezione trovata
+         Point3d ptIntClosest ;
+         double dPar ;
+         IntCP.GetIntersPointNearTo( ptCurr, ptIntClosest, dPar) ;
+         // verifico che sia allineato con la direzione che dovrebbe avere
+         Vector3d vtDir = ptIntClosest - ptCurr ;
+         vtDir.Normalize() ;
+         double dDiff = (vtDir - vtAux).Len() ;
+         if ( dDiff < dLinAngTol) {
+            #if DEBUG_SYNC_INTERPOLATION
+               PtrOwner<IGeoPoint3d> ptG( CreateGeoPoint3d()) ; ptG->Set( ptIntClosest) ;
+               VT.emplace_back( Release( ptG)) ;
+               VC.emplace_back( WHITE) ;
+               SaveGeoObj( VT, VC, "C:\\Temp\\trimming\\interpolate\\SyncLinesPlanes.nge") ;
+            #endif
+            //Memorizzo tale punto
+            vBiPts.emplace_back( make_pair( ptCurr, ptIntClosest)) ;
+            bFound = true ;
+         }
+         else if ( IntCP.GetIntersCount() > 1) {
+            double dMinDiff = INFINITO ;
+            Point3d ptBest ;
+            for ( int j = 0 ; j < IntCP.GetIntersCount() ; ++j) {
+               IntCrvPlnInfo icpi ; IntCP.GetIntCrvPlnInfo( j, icpi) ;
+               Point3d ptInt = icpi.Ici->ptI ;
+               double dDiff = ( ptInt - ptCurr).Len() ;
+               if ( dDiff < dMinDiff) {
+                  dMinDiff = dDiff ;
+                  ptBest = ptInt ;
+               }
+            }
+            if ( dMinDiff < dLinAngTol)
+               bFound = true ;
+         }
+      }
+
+      if ( ! bFound) {
+         // applico la direzione desiderata nel punto corrente della guida
+         // calcolo la lunghezza dell'isocurva in quella zona
+         Point3d ptS1, ptS2 ;
+         pGuide->GetStartPoint( ptS1) ;
+         pOtherGuide->GetStartPoint( ptS2);
+         double dDistRef = Dist( ptS1, ptS2) ;
+         double dParamOther = -1. ;
+         int nFlag = -1 ;
+         Point3d ptEnd = ptCurr + (vtAux * dDistRef) ;
+         if ( ! DistPointCurve( ptEnd, *pOtherGuide).GetParamAtMinDistPoint( 0, dParamOther, nFlag))
+            return false ;
+
+         // nell'intorno del più vicino, cerco l'isocurva più vicina alla direzione desiderata
+         Point3d ptBest ;
+         double dMinDiff = INFINITO ;
+         double dSearchLen = 3. ;
+         double dStepLen = 0.1 ;
+         double dCurrLenOther ; pOtherGuide->GetLengthAtParam( dParamOther, dCurrLenOther) ;
+         double dLenOther ; pOtherGuide->GetLength( dLenOther) ;
+         dCurrLenOther -= dSearchLen ;
+         dCurrLenOther = Clamp( dCurrLenOther, 0., dLenOther) ;
+         for ( int j = 0 ; j < 2 * dSearchLen / dStepLen ; ++j) {
+            dCurrLenOther += j * dStepLen ;
+            if ( dCurrLenOther > dLenOther)
+               break ;
+            double dCurrParOther = 0 ; pOtherGuide->GetParamAtLength( dCurrLenOther, dCurrParOther) ;
+            Point3d ptCurrOther ; pOtherGuide->GetPointD1D2( dCurrParOther, ICurve::FROM_MINUS, ptCurrOther) ;
+            Vector3d vtDir = ptCurrOther - ptCurr ; vtDir.Normalize() ;
+            double dDiff = ( vtDir - vtAux).Len() ;
+            if ( dDiff < dMinDiff) {
+               dMinDiff = dDiff ; 
+               ptBest = ptCurrOther ;
+            }
+            #if DEBUG_SYNC_INTERPOLATION
+               VT.clear() ;
+               VC.clear() ;
+               VT.emplace_back( pGuide->Clone()) ;
+               VC.emplace_back( BLUE) ;
+               VT.emplace_back( pOtherGuide->Clone()) ;
+               VC.emplace_back( BLUE) ;
+               PtrOwner<IGeoVector3d> vtFirst( CreateGeoVector3d()) ; vtFirst->Set( -vtN * 12, ptCurrOther) ;
+               VT.emplace_back( Release( vtFirst)) ;
+               VC.emplace_back( AQUA) ;
+               PtrOwner<IGeoVector3d> vtCurr( CreateGeoVector3d()) ; vtCurr->Set( -vtDir * 12, ptCurrOther) ;
+               VT.emplace_back( Release( vtCurr)) ;
+               VC.emplace_back( WHITE) ;
+               SaveGeoObj( VT, VC, "C:\\Temp\\trimming\\interpolate\\SyncLinesPlanes.nge") ;
+            #endif
+         }
+         if ( dMinDiff < 2 * dLinAngTol)
+            vBiPts.emplace_back( make_pair( ptCurr, ptBest)) ;
+      }
    }
 
    return true ;
@@ -3838,8 +3979,8 @@ GetTrimmingSurfBzSyncPoints( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2,
         ! pCompoEdge1->IsValid()  ||  ! pCompoEdge2->IsValid())
       return false ;
 
-  // Controllo sulla tolleranza lineare
-   double dMyLinTol = Clamp( dLinTol, EPS_SMALL, 1e5 * EPS_SMALL) ;
+  //// Controllo sulla tolleranza lineare
+   //double dMyLinTol = Clamp( dLinTol, EPS_SMALL, 1e5 * EPS_SMALL) ;
 
    #if DEBUG_SYNC_POINTS
       VT.clear() ; VC.clear() ;
@@ -3850,26 +3991,26 @@ GetTrimmingSurfBzSyncPoints( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2,
    #endif
 
   // Definisco la superficie di Bezier rigata
-   PtrOwner<SurfBezier> pSBzRuled( GetBasicSurfBezier( GetSurfBezierRuled( pCompoEdge1, pCompoEdge2, ISurfBezier::RLT_B_MINDIST_PLUS, dMyLinTol))) ;
+   PtrOwner<SurfBezier> pSBzRuled( GetBasicSurfBezier( GetSurfBezierRuledSmooth( pCompoEdge1, pCompoEdge2, vSyncPoints, 20.0))) ;
    if ( IsNull( pSBzRuled)  ||  ! pSBzRuled->IsValid())
       return false ;
 
-  // Recupero i punti di sincronizzazione e li restituisco
-   ICURVEPOVECTOR vCrv ;
-   pSBzRuled->GetAllPatchesIsocurves( false, vCrv) ;
-   vSyncPoints.reserve( vCrv.size()) ;
-   for ( int i = 0 ; i < ssize( vCrv) ; ++ i) {
-      if ( ! IsNull( vCrv[i])  &&  vCrv[i]->IsValid()) {
-         #if DEBUG_SYNC_POINTS
-            VT.emplace_back( vCrv[i]->Clone()) ;
-            VC.emplace_back( LIME) ;
-         #endif
-         Point3d ptStart ; vCrv[i]->GetStartPoint( ptStart) ;
-         Point3d ptEnd ; vCrv[i]->GetEndPoint( ptEnd) ;
-         if ( ! AreSamePointApprox( ptStart, ptEnd))
-            vSyncPoints.emplace_back( make_pair( ptStart, ptEnd)) ;
-      }
-   }
+  //// Recupero i punti di sincronizzazione e li restituisco
+  // ICURVEPOVECTOR vCrv ;
+  // pSBzRuled->GetAllPatchesIsocurves( false, vCrv) ;
+  // vSyncPoints.reserve( vCrv.size()) ;
+  // for ( int i = 0 ; i < ssize( vCrv) ; ++ i) {
+  //    if ( ! IsNull( vCrv[i])  &&  vCrv[i]->IsValid()) {
+  //       #if DEBUG_SYNC_POINTS
+  //          VT.emplace_back( vCrv[i]->Clone()) ;
+  //          VC.emplace_back( LIME) ;
+  //       #endif
+  //       Point3d ptStart ; vCrv[i]->GetStartPoint( ptStart) ;
+  //       Point3d ptEnd ; vCrv[i]->GetEndPoint( ptEnd) ;
+  //       if ( ! AreSamePointApprox( ptStart, ptEnd))
+  //          vSyncPoints.emplace_back( make_pair( ptStart, ptEnd)) ;
+  //    }
+  // }
 
    #if DEBUG_SYNC_POINTS
       SaveGeoObj( VT, VC, "C:\\Temp\\BorderSyncPoints.nge") ;
@@ -3900,7 +4041,7 @@ GetTrimmingSyncInterpolation( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2,
 
   // Verifico i valori delle tolleranze
    double dMyLinTol = Clamp( dLinTol, EPS_SMALL, 1e5 * EPS_SMALL) ;
-   double dMyAngTol = Clamp( dAngTol, EPS_ANG_SMALL, 60.) ;
+   //double dMyAngTol = Clamp( dAngTol, EPS_ANG_SMALL, 60.) ;
 
   // Verifico le due curve di sincronizzazione abbiano gli estremi sulle due curve di bordo
    Point3d ptS1 ; pSync1->GetStartPoint( ptS1) ;
@@ -4008,18 +4149,18 @@ GetTrimmingSyncInterpolation( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2,
    Vector3d vtStart1, vtStart2 ;
    if ( ! pCompoGuide1->GetStartDir( vtStart1)  ||  ! pCompoGuide2->GetStartDir( vtStart2))
       return false ;
-   Vector3d vtAux = ptE1 - ptS1 ; vtAux.Normalize() ;
+   Vector3d vtAuxStart = ptE1 - ptS1 ; vtAuxStart.Normalize() ;
    Vector3d vtMTan = Media( vtStart1, vtStart2) ; vtMTan.Normalize() ;
-   Vector3d vtN = OrthoCompo( vtMTan, vtAux) ; vtN.Normalize() ;
+   Vector3d vtN = OrthoCompo( vtMTan, vtAuxStart) ; vtN.Normalize() ;
    Plane3d plStart ;
    if ( ! plStart.Set( ptS1, vtN))
       return false ;
    Vector3d vtEnd1, vtEnd2 ;
    if ( ! pCompoGuide1->GetEndDir( vtEnd1)  ||  ! pCompoGuide2->GetEndDir( vtEnd2))
       return false ;
-   vtAux = ptE2 - ptS2 ; vtAux.Normalize() ;
+   Vector3d vtAuxEnd = ptE2 - ptS2 ; vtAuxEnd.Normalize() ;
    vtMTan = Media( vtEnd1, vtEnd2) ; vtMTan.Normalize() ;
-   vtN = OrthoCompo( vtMTan, vtAux) ; vtN.Normalize() ;
+   vtN = OrthoCompo( vtMTan, vtAuxEnd) ; vtN.Normalize() ;
    Plane3d plEnd ;
    if ( ! plEnd.Set( ptS2, vtN))
       return false ;
@@ -4038,13 +4179,15 @@ GetTrimmingSyncInterpolation( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2,
 
   // Curve di Sincronizzazione del Bordo 1 sul Bordo 2
    BIPNTVECTOR vBiPts1 ;
-   if ( ! InterpolateSyncCurvesOnEndGuidePoints( pCompoGuide1, pCompoGuide2, plStart, plEnd, dMyLinTol, vBiPts1))
+   if ( ! InterpolateSyncCurvesOnEndGuidePoints( pCompoGuide1, pCompoGuide2, plStart, plEnd, vtAuxStart, vtAuxEnd, dMyLinTol, vBiPts1))
       return false ;
 
+   vtAuxStart *= -1 ;
+   vtAuxEnd *= -1 ;
   // Curve di Sincronizzazione del Bordo 2 sul Bordo 1
    BIPNTVECTOR vBiPts2 ;
-   if ( ! InterpolateSyncCurvesOnEndGuidePoints( pCompoGuide2, pCompoGuide1, plStart, plEnd, dMyLinTol, vBiPts2))
-      return false ;
+   //if ( ! InterpolateSyncCurvesOnEndGuidePoints( pCompoGuide2, pCompoGuide1, plStart, plEnd, vtAuxStart, vtAuxEnd, dMyLinTol, vBiPts2))
+   //   return false ;
 
   // Restituisco le Curve di Sincronizzazione
   // [Da Bordo 1 a Bordo 2 originale]
@@ -4110,7 +4253,8 @@ GetTrimmingRuledBezier( const CISURFPVECTOR& vSurf, const ICurve* pCrvEdge1,
 
   // Se non ho punti di controllo forzati
    if ( vSyncPoints.empty()) {
-      pSurfBz.Set( GetSurfBezierRuled( pCompoEdge1, pCompoEdge2, ISurfBezier::RLT_B_MINDIST_PLUS, dMyLinTol)) ;
+      BIPNTVECTOR vSyncLines ;
+      pSurfBz.Set( GetSurfBezierRuledSmooth( pCompoEdge1, pCompoEdge2, vSyncLines, 20.0)) ;
       if ( IsNull( pSurfBz)  ||  ! pSurfBz->IsValid()) {
          LOG_ERROR( GetEGkLogger(), "Error in Trimming : Ruled Bezier invalid") ;
          return nullptr ;
@@ -4746,7 +4890,7 @@ GetTrimmingHoleBorders( const CISURFPVECTOR& vpSurf, const Point3d& ptRef, doubl
      // Scorro le curve successive
       for ( int j = i + 1 ; nIndJ == -1 && j < ssize( vHoles) ; ++ j) {
         // Recupero la curva corrente, se non presente allora passo alla successiva
-         if ( IsNull( vHoles[i].pCompoHole))
+         if ( IsNull( vHoles[j].pCompoHole))
             continue ;
         // Se il tipo è differente non possono essere in coppia
          if ( vHoles[i].nType != vHoles[j].nType)
@@ -4841,3 +4985,499 @@ GetTrimmingHoleBorders( const CISURFPVECTOR& vpSurf, const Point3d& ptRef, doubl
 
    return true ;
 }
+
+
+struct PntInfo{
+   Point3d pt ;
+   double dDist ;
+   Vector3d vtPos ;
+   PntInfo( const Point3d& _pt, double _dDist, const Vector3d& _vtPos) :
+          pt( _pt), dDist( _dDist), vtPos( _vtPos) {;}
+};
+typedef vector<PntInfo> PNTINFOVECTOR ;
+
+//------------------------------------------------------------------------------
+static bool
+FillPntInfo( const PNTVECTOR& vPnt, const ICurveComposite* pCC, PNTINFOVECTOR& vPntInfo)
+{
+   for ( int i = 0 ; i < ssize( vPnt) - 3 ; i+=3) {
+      bool bOk = false ;
+      const ICurveBezier* pSubCrv = GetCurveBezier( pCC->GetCurve( i / 3)) ;
+      for ( int j = i == 0 ? 0 : 1 ; j <= 3 ; ++j) {
+         Point3d pt = pSubCrv->GetControlPoint( j, &bOk) ;
+         double dDist = 0 ;
+         Vector3d vtPos = V_NULL ;
+         if ( j > 0 && j < 3){
+            DistPointCurve dpc( pt, *pSubCrv) ;
+            dpc.GetDist( dDist) ;
+            int nFlag = - 1 ;
+            Point3d ptMinDist ;
+            dpc.GetMinDistPoint( 0., ptMinDist, nFlag) ;
+            vtPos = pt - ptMinDist ;
+         }
+         vPntInfo.emplace_back( pt, dDist, vtPos) ;
+      }
+   }
+   return true ;
+}
+
+//------------------------------------------------------------------------------
+static bool
+RemoveInflexionPoints( PNTVECTOR& vPnt, PNTINFOVECTOR& vPntInfo, PNTINFOVECTOR& vPntRefInfo)
+{
+   // se trovo tre punti di fila che sono dallo stesso lato, opposto a quello degli altri punti attorno, allora cerco di spostarli lungo la
+   // normale alla superficie in modo da evitare cambi di concavità
+   bool bSameSideAsPrev = true ;
+   double dSmallDist = 5 * EPS_SMALL ;
+   for ( int i = 2 ; i < ssize( vPntInfo) - 2 ; ++i) {
+      // se è un punto di split o sta sulla curva vado avanti
+      if ( vPntInfo[i].dDist < dSmallDist)
+         continue ;
+      int nPrev = vPntInfo[i-1].dDist < EPS_ZERO ? i - 2 : i - 1 ;
+      double dProj = vPntInfo[i].vtPos * vPntInfo[nPrev].vtPos ;
+      bSameSideAsPrev = dProj > EPS_ZERO ;
+      if ( abs(dProj) < EPS_ZERO){
+         int nPrevPrev = nPrev - 1 ;
+         dProj = vPntInfo[i].vtPos * vPntInfo[nPrevPrev].vtPos ;
+         bSameSideAsPrev = dProj > EPS_ZERO ;
+      }
+      if ( ! bSameSideAsPrev) {
+         // devo verificare anche che sia diverso anche dal successivo ( o dal quello dopo ancora, se il successivo sta sulla curva)
+         bool bCurrOrPrev = vPntInfo[i+1].dDist < EPS_ZERO ;
+         int nFirst, nSecond, nThird ;
+         if ( bCurrOrPrev) {
+            nFirst = i ;
+            nSecond = i + 1 ;
+            nThird = i + 2 ;
+         }
+         else {
+            nFirst = i - 2 ;
+            nSecond = i - 1 ;
+            nThird = i ;
+         }
+         int nNext = bCurrOrPrev ? i + 2 : i + 1 ;
+         // se il successivo è diverso ho un terzetto anomalo da aggiustare
+         // altrimenti ho un cambio naturale di concavità
+         if ( vPntInfo[i].vtPos * vPntInfo[nNext].vtPos < 0  ||  vPntInfo[nNext].dDist < dSmallDist) {
+            // ruoto il terzetto fino a matchare la tangente sull'altra curva
+            // ruoto il punto solo se non stava già esattamente sulla SubCrv ( che suppongo essere un tratto rettilineo)
+            if ( vPntInfo[nFirst].dDist > dSmallDist) {
+               Vector3d vtCurr = vPntInfo[nSecond].pt - vPntInfo[nFirst].pt ;
+               Vector3d vtRef = vPntRefInfo[nSecond].pt - vPntRefInfo[nFirst].pt ;
+               Vector3d vtAx = vPntRefInfo[nSecond].pt - vPntInfo[nSecond].pt ;
+               bool bDet = false ;
+               double dAng = 0 ; vtCurr.GetRotation(vtRef, vtAx, dAng, bDet) ;
+               if ( abs(dAng) > 170)
+                  dAng = 180 - dAng ;
+               vPnt[nFirst].Rotate( vPnt[nSecond], vtAx, dAng) ;
+            }
+            if ( vPntInfo[nThird].dDist > dSmallDist) {
+               Vector3d vtCurr = vPntInfo[nThird].pt - vPntInfo[nSecond].pt ;
+               Vector3d vtRef = vPntRefInfo[nThird].pt - vPntRefInfo[nSecond].pt ;
+               Vector3d vtAx = vPntRefInfo[nSecond].pt - vPntInfo[nSecond].pt ;
+               bool bDet = false ;
+               double dAng = 0 ; vtCurr.GetRotation(vtRef, vtAx, dAng, bDet) ;
+               if ( abs(dAng) > 170)
+                  dAng = 180 - dAng ;
+               vPnt[nThird].Rotate( vPnt[nSecond], vtAx, dAng) ;
+            }
+            if ( bCurrOrPrev)
+               i += 2 ;
+         }
+      }
+   }
+
+   return true ;
+}
+
+// Funzione per la regolarizzazione delle curve di bordo di una lavorazione di trim
+// Le curve vengono modificate entro una data tolleranza, in modo che 
+ISurfBezier*
+RegolarizeBordersLocallyRMF( const ISurfBezier* pSurfBz, const BIPOINT& bpIsoStart, const BIPOINT& bpIsoEnd, double dTol)
+{
+#if DEBUG_SMOOTH_CURVATURE
+   VT.clear() ;
+#endif
+
+   // prendo per buone le isocurve di inizio e fine tratto e devo identificare tra loro le isocurve che creano troppo twist e che sono da raddrizzare
+   Point3d ptS1 = bpIsoStart.first ;
+   Point3d ptS2 = bpIsoEnd.first ;
+   Vector3d vtDir1 = bpIsoStart.second - ptS1 ;
+   Vector3d vtDir2 = bpIsoEnd.second - ptS2 ;
+
+   int nDegU, nDegV, nSpanU, nSpanV ;
+   bool bRat, bTrimmed ;
+   pSurfBz->GetInfo( nDegU, nDegV, nSpanU, nSpanV, bRat, bTrimmed) ;
+   if ( nDegU != 3)
+      return nullptr ;
+   // individuo quali isocurve sono state indicate come inizio e fine
+   PtrOwner<ICurveComposite> pCrv1( pSurfBz->GetSingleEdge3D( false, 2)) ;
+   PtrOwner<ICurveComposite> pCrv2( pSurfBz->GetSingleEdge3D( false, 0)) ;
+   // inverto la curva corrispondente al bordo 2 della bezier per avere le due guide concordi
+   pCrv2->Invert() ;
+   double dParS1 = -1 ; double dParS2 = -1 ; 
+   if ( ! pCrv1->GetParamAtPoint( ptS1, dParS1) ||  ! pCrv1->GetParamAtPoint( ptS2, dParS2))
+      return nullptr ;
+   int nUS1 = int ( dParS1) * nDegU ;
+   int nUS2 = int ( dParS2) * nDegU ;
+   if ( nUS1 > nUS2) {
+      swap( nUS1, nUS2) ;
+      swap( dParS1, dParS2) ;
+      swap( ptS1, ptS2) ;
+      swap( vtDir1, vtDir2) ;
+   }
+   PtrOwner<ICurveComposite> pCrvOrig1( ConvertCurveToComposite( pCrv1->CopyParamRange( dParS1, dParS2))) ;
+   PtrOwner<ICurveComposite> pCrvOrig2( ConvertCurveToComposite( pCrv2->CopyParamRange( dParS1, dParS2))) ;
+
+   /////////////////////// versione con RMF
+   // campiono finemente la prima curva e ottengo il punto che dovrebbe stare sull'altra curva
+   Vector3d vtTang1 ; pCrvOrig1->GetStartDir( vtTang1) ;
+   Frame3d frStart1 ; frStart1.Set( ptS1, vtTang1, vtDir1) ;  // uso la tangente (come z) e l'isocurva in V (come x) per il frame iniziale
+   RotationMinimizingFrame rmf ; rmf.Set( pCrvOrig1, frStart1) ;
+   double dLenTot = 0. ; pCrvOrig1->GetLength( dLenTot) ;
+   double dStep = dLenTot / ceil( dLenTot) ;
+   FRAME3DVECTOR vRMF ;
+   rmf.GetFramesByStep( dStep, true, vRMF) ;
+   PNTVECTOR vPnt1 ;
+   PolyLine PL2 ;
+   double dLenCurr = 0. ;
+   double dWidth = vtDir1.Len() ;
+   for ( int i = 0 ; i < ssize( vRMF) ; ++i) {
+      double dPar ; pCrvOrig1->GetParamAtLength( dLenCurr, dPar) ;
+      Point3d pt0 ; pCrvOrig1->GetPointD1D2( dPar, ICurve::FROM_MINUS, pt0) ;
+      Point3d pt1 = pt0 + vRMF[i].VersX() * dWidth ;
+      vPnt1.push_back( pt1) ;
+      PL2.AddUPoint( i, pt1) ;
+
+      dLenCurr += dStep ;
+   }
+
+   CurveComposite CCToApprox2 ; CCToApprox2.FromPolyLine( PL2) ;
+   Vector3d vtStart2 ; pCrvOrig2->GetStartDir( vtStart2) ;
+   Vector3d vtEnd2 ; pCrvOrig2->GetEndDir( vtEnd2) ;
+   PtrOwner<ICurveComposite> pCC2( ConvertCurveToComposite( ApproxCurveWithBezier( &CCToApprox2, 0.05, vtStart2, vtEnd2))) ;
+   if ( IsNull( pCC2)  ||  ! pCC2->IsValid())
+      return nullptr ;
+
+   // dalla seconda ricostruisco la prima
+   Vector3d vtTang2 ; pCC2->GetStartDir( vtTang2) ;
+   Frame3d frStart2 ; frStart2.Set( bpIsoStart.second, vtTang2, vtDir1) ;  // uso la tangente (come z) e l'isocurva in V (come x) per il frame iniziale
+   RotationMinimizingFrame rmf2 ; rmf2.Set( pCC2, frStart2) ;
+   double dLenTot2 = 0. ; pCC2->GetLength( dLenTot2) ;
+   double dStep2 = dLenTot2 / ceil( dLenTot2) ;
+   FRAME3DVECTOR vRMF2 ;
+   rmf2.GetFramesByStep( dStep2, true, vRMF2) ;
+   PNTVECTOR vPnt0 ;
+   PolyLine PL1 ;
+   double dLenCurr2 = 0. ;
+   for ( int i = 0 ; i < ssize( vRMF2) ; ++i) {
+      double dPar ; pCC2->GetParamAtLength( dLenCurr2, dPar) ;
+      Point3d pt1 ; pCC2->GetPointD1D2( dPar, ICurve::FROM_MINUS, pt1) ;
+      Point3d pt0 = pt1 - vRMF2[i].VersX() * dWidth ;
+      vPnt0.push_back( pt0) ;
+      PL1.AddUPoint( i, pt0) ;
+
+      dLenCurr2 += dStep2 ;
+   }
+
+   CurveComposite CCToApprox1 ; CCToApprox1.FromPolyLine( PL1) ;
+   Vector3d vtStart1 ; pCrvOrig1->GetStartDir( vtStart1) ;
+   Vector3d vtEnd1 ; pCrvOrig1->GetEndDir( vtEnd1) ;
+   PtrOwner<ICurveComposite> pCC1( ConvertCurveToComposite( ApproxCurveWithBezier( &CCToApprox1, 0.05, vtStart1, vtEnd1))) ;
+   if ( IsNull( pCC1)  ||  ! pCC1->IsValid())
+      return nullptr ;
+
+#if DEBUG_SMOOTH_CURVATURE
+   for( int i = 0 ; i < ssize( vPnt1) ; ++i) {
+      PtrOwner<IGeoPoint3d> pPT( CreateGeoPoint3d()) ; pPT->Set( vPnt1[i]) ;
+      VT.push_back( Release( pPT)) ;
+   }
+   for( int i = 0 ; i < ssize( vPnt0) ; ++i) {
+      PtrOwner<IGeoPoint3d> pPT( CreateGeoPoint3d()) ; pPT->Set( vPnt0[i]) ;
+      VT.push_back( Release( pPT)) ;
+   }
+   VT.push_back( pCC1->Clone()) ;
+   VT.push_back( pCC2->Clone()) ;
+   SaveGeoObj( VT, "C:\\Temp\\bezier\\ruled\\smoothness\\regolarized_RMF.nge") ;
+#endif
+
+   // controllo di essere rimasto in tolleranza
+   double dErr = 0 ;
+   CalcApproxError( pCrvOrig1, pCC1, dErr, 20) ;
+   if ( dErr > dTol)
+      return nullptr ;
+   dErr = 0 ;
+   CalcApproxError( pCrvOrig2, pCC2, dErr, 20) ;
+   if ( dErr > dTol)
+      return nullptr ;
+
+   // creo una surf di bezier uguale a quella di partenza, ma a cui cambio la parte da modificare
+   PtrOwner<SurfBezier> pNewSurf( CreateBasicSurfBezier()) ;
+   int nNewCrvs = pCC1->GetCurveCount() ;
+   if ( pCC2->GetCurveCount() != nNewCrvs)
+      return nullptr ;
+   int nDiff = nNewCrvs - pCrvOrig1->GetCurveCount() ;
+   pNewSurf->Init( nDegU, nDegV, nSpanU, nSpanV, bRat) ;
+   // copio la parte uguale
+   for ( int i = 0 ; i < nSpanU * nDegU + 1 ; ++i) {
+      if ( i > nUS1 && i < nUS2)
+         continue ;
+      bool bOk = false ;
+      Point3d pt = pSurfBz->GetControlPoint( i, 0, &bOk) ;
+      int nNewI = i ;
+      if ( i > nUS2)
+         nNewI = i + nDiff ;
+      pNewSurf->SetControlPoint( nNewI, 0, pt) ;
+      pt = pSurfBz->GetControlPoint( i, 1, &bOk) ;
+      pNewSurf->SetControlPoint( nNewI, 1, pt) ;
+   }
+   // aggiungo la parte diversa
+   for ( int i = 0 ; i < nNewCrvs * nDegU + 1 ; ++i) {
+      int nSub = i / 3 ;
+      int nPnt = i % 3 ;
+      if ( nSub == nNewCrvs) {
+         --nSub ;
+         nPnt = 3 ;
+      }
+      const ICurveBezier* pSubCrv1 = GetCurveBezier( pCC1->GetCurve( nSub)) ;
+      Point3d pt = pSubCrv1->GetControlPoint( nPnt) ;
+      int nNewI = i + nUS1 ;
+      pNewSurf->SetControlPoint( nNewI, 0, pt) ;
+      const ICurveBezier* pSubCrv2 = GetCurveBezier( pCC2->GetCurve( nSub)) ;
+      pt = pSubCrv2->GetControlPoint( nPnt) ;
+      pNewSurf->SetControlPoint( nNewI, 1, pt) ;
+   }
+
+   return Release( pNewSurf) ;
+}
+
+//------------------------------------------------------------------------------
+// Funzione per la regolarizzazione delle curve di bordo di una lavorazione di trim
+// Le curve vengono modificate entro una data tolleranza, in modo che 
+ISurfBezier*
+RegolarizeBordersLocally( const ISurfBezier* pSurfBz, const BIPOINT& bpIsoStart, const BIPOINT& bpIsoEnd, double dTol, int nType)
+{
+   if ( nType == RegolarizeType::RMF)
+      return RegolarizeBordersLocallyRMF( pSurfBz, bpIsoStart, bpIsoEnd, dTol) ;
+
+   #if DEBUG_SMOOTH_CURVATURE
+      VT.clear() ;
+   #endif
+
+   // prendo per buone le isocurve di inizio e fine tratto e devo identificare tra loro le isocurve che creano troppo twist e che sono da raddrizzare
+   Point3d ptS1 = bpIsoStart.first ;
+   Point3d ptS2 = bpIsoEnd.first ;
+   Vector3d vtDir1 = bpIsoStart.second - ptS1 ;
+   Vector3d vtDir2 = bpIsoEnd.second - ptS2 ;
+   //double dInterpolateAngTol = 4 ;
+   //double dAngInterp = 0 ;
+   //vtDir1.GetAngle( vtDir2, dAngInterp) ;
+   //bool bInterpolate = dAngInterp > dInterpolateAngTol ;
+
+   int nDegU, nDegV, nSpanU, nSpanV ;
+   bool bRat, bTrimmed ;
+   pSurfBz->GetInfo( nDegU, nDegV, nSpanU, nSpanV, bRat, bTrimmed) ;
+   if ( nDegU != 3)
+      return nullptr ;
+   // individuo quali isocurve sono state indicate come inizio e fine
+   PtrOwner<ICurveComposite> pCrv1( pSurfBz->GetSingleEdge3D( false, 2)) ;
+   PtrOwner<ICurveComposite> pCrv2( pSurfBz->GetSingleEdge3D( false, 0)) ;
+   // inverto la curva corrispondente al bordo 2 della bezier per avere le due guide concordi
+   pCrv2->Invert() ;
+   double dParS1 = -1 ; double dParS2 = -1 ; 
+   if ( ! pCrv1->GetParamAtPoint( ptS1, dParS1) ||  ! pCrv1->GetParamAtPoint( ptS2, dParS2))
+      return nullptr ;
+   int nUS1 = int ( dParS1) * nDegU ;
+   int nUS2 = int ( dParS2) * nDegU ;
+   bool bInverted = false ;
+   if ( nUS1 > nUS2) {
+      swap( nUS1, nUS2) ;
+      swap( dParS1, dParS2) ;
+      swap( ptS1, ptS2) ;
+      swap( vtDir1, vtDir2) ;
+      bInverted = true ;
+   }
+   PtrOwner<ICurve> pCrvOrig1( pCrv1->CopyParamRange( dParS1, dParS2)) ;
+   PtrOwner<ICurve> pCrvOrig2( pCrv2->CopyParamRange( dParS1, dParS2)) ;
+   double dLen = 0 ; pCrvOrig1->GetLength( dLen) ;
+
+   ///// versione con correzioni a mano
+   Point3d ptPrevS = ptS1 ;
+   Point3d ptPrevE = ! bInverted ? bpIsoStart.second : bpIsoEnd.second ;
+   Vector3d vtIsoPrev = ptPrevE - ptPrevS ; vtIsoPrev.Normalize() ;
+   Point3d ptBez ; Vector3d vtNCurr ;
+   pSurfBz->GetPointNrmD1D2( dParS1, 0.5, ISurfBezier::FROM_MINUS, ISurfBezier::FROM_MINUS, ptBez, vtNCurr) ;
+   int nPoints = ( nUS2 - nUS1) * nDegU + 1 ;
+   PNTVECTOR vPnt0 ; vPnt0.reserve( nPoints) ; vPnt0.push_back( ptPrevS) ;
+   PNTVECTOR vPnt1 ; vPnt1.reserve( nPoints) ; vPnt1.push_back( ptPrevE) ;
+   // salvo il secondo punto di controllo della patch
+   bool bOk = false ;
+   Point3d ptSecond1Curr = pSurfBz->GetControlPoint( nUS1 + 1, 0, &bOk) ;
+   vPnt0.push_back( ptSecond1Curr) ;
+   Point3d ptSecond2Curr = pSurfBz->GetControlPoint( nUS1 + 1, 1, &bOk) ;
+   vPnt1.push_back( ptSecond2Curr) ;
+   // scorro le isocurve di separazione tra patch
+   for ( int i = nUS1 + 3 ; i < nUS2 ; i +=3) {
+      // recupero precedente e successivo
+      Point3d ptThird1Prev = pSurfBz->GetControlPoint( i - 1, 0, &bOk) ;
+      Point3d ptThird2Prev = pSurfBz->GetControlPoint( i - 1, 1, &bOk) ;
+      Point3d ptSecond1Next = pSurfBz->GetControlPoint( i + 1, 0, &bOk) ;
+      Point3d ptSecond2Next = pSurfBz->GetControlPoint( i + 1, 1, &bOk) ;
+      // recupero corrente e verifico la torsione
+      Point3d ptCurr1 = pSurfBz->GetControlPoint( i, 0, &bOk) ;
+      Point3d ptCurr2 = pSurfBz->GetControlPoint( i, 1, &bOk) ;
+      Vector3d vtIsoCurr = ptCurr2 - ptCurr1 ;
+      double dDist = vtIsoCurr.Len() ;
+      vtIsoCurr.Normalize() ;
+      //Vector3d vtDirPrev = vtIsoPrev ^ vtNPrev ;
+      Vector3d vtDirCurr = ptSecond1Next - ptCurr1 ; vtDirCurr.Normalize() ;
+      double dLenCurr = 0 ; pCrvOrig1->GetLengthAtParam( i, dLenCurr) ;
+      double dCoeff = dLenCurr / dLen ;
+      Vector3d vtIsoInterp = Media( vtDir1, vtDir2, dCoeff) ; vtIsoInterp.Normalize() ;
+      bool bDet = false ;
+      //double dAng = 0 ; vtIsoCurr.GetRotation( vtIsoPrev, vtDirPrev, dAng, bDet) ;
+      double dAng = 0 ; vtIsoCurr.GetRotation( vtIsoInterp, vtDirCurr, dAng, bDet) ;
+      vtNCurr = vtDirCurr ^ vtIsoCurr ; vtNCurr.Rotate( vtDirCurr, dAng) ;
+      double dSinAngTol = sin( 5 * DEGTORAD) ;
+      Vector3d vtPrev1 = ptCurr1 - ptThird1Prev ; vtPrev1.Normalize() ;
+      Vector3d vtNext1 = ptSecond1Next - ptCurr1 ; vtNext1.Normalize() ;
+      bool bAngularPoint1 = ! AreSameVectorEpsilon( vtPrev1, vtNext1, dSinAngTol) ;
+      Vector3d vtPrev2 = ptCurr2 - ptThird2Prev ; vtPrev2.Normalize() ;
+      Vector3d vtNext2 = ptSecond2Next - ptCurr2 ; vtNext2.Normalize() ;
+      bool bAngularPoint2 = ! AreSameVectorEpsilon( vtPrev2, vtNext2, dSinAngTol) ;
+      if ( abs( dAng) > 0) {
+         // se l'isocurva di separazione dalla patch successiva è torta rispetto alla precedente
+         // allora prendo il penultimo punto della curva precedente, il punto di joint e il secondo della prossima e li sposto lungo la normale della superficie
+         dDist *= dAng * DEGTORAD / 2 ;
+         if ( ! bAngularPoint1) {
+            // se non ho un punto angoloso muovo tutto il terzetto insieme
+            ptThird1Prev -= vtNCurr * dDist ;
+            ptSecond1Next -= vtNCurr * dDist ;
+            ptCurr1 -= vtNCurr * dDist ;
+         }
+         else {
+            // altrimenti sposto solo il punto corrente verso la congiungente tra il precedente e il successivo
+            DistPointLine dpl( ptCurr1, ptThird1Prev, ptSecond1Next, true) ;
+            Point3d ptMinDist ; dpl.GetMinDistPoint( ptMinDist) ;
+            Vector3d vtCorrDir = ptMinDist - ptCurr1 ; vtCorrDir.Normalize() ;
+            double dProjDir = vtNCurr * vtCorrDir ;
+            if ( dProjDir < 0)
+               LOG_ERROR( GetEGkLogger(), "Error : regolarizing crv0 near an angular point") ;
+            double dDistCorr = min( dDist, Dist( ptMinDist, ptCurr1)) ;
+            ptCurr1 -= vtCorrDir * dDistCorr ;
+         }
+         if ( ! bAngularPoint2) {
+            ptThird2Prev += vtNCurr * dDist ;
+            ptSecond2Next += vtNCurr * dDist ;
+            ptCurr2 += vtNCurr * dDist ;
+         }
+         else {
+            // altrimenti sposto solo il punto corrente verso la congiungente tra il precedente e il successivo
+            DistPointLine dpl( ptCurr2, ptThird2Prev, ptSecond2Next, true) ;
+            Point3d ptMinDist ; dpl.GetMinDistPoint( ptMinDist) ;
+            Vector3d vtCorrDir = ptMinDist - ptCurr2 ; vtCorrDir.Normalize() ;
+            double dProjDir = vtNCurr * vtCorrDir ;
+            if ( dProjDir < 0)
+               LOG_ERROR( GetEGkLogger(), "Error : regolarizing crv1 near an angular point") ;
+            double dDistCorr = min( dDist, Dist( ptMinDist, ptCurr2)) ;
+            ptCurr2 += vtCorrDir * dDistCorr ;
+         }
+      }
+      vPnt0.push_back( ptThird1Prev) ;
+      vPnt0.push_back( ptCurr1) ;
+      vPnt0.push_back( ptSecond1Next) ;
+
+      vPnt1.push_back( ptThird2Prev) ;
+      vPnt1.push_back( ptCurr2) ;
+      vPnt1.push_back( ptSecond2Next) ;
+
+      //vtIsoPrev = ptCurr2 - ptCurr1 ; vtIsoPrev.Normalize() ;
+      //vtNPrev = ( ptSecond1Next - ptCurr1) ^ vtIsoPrev ; vtNPrev.Normalize() ;
+   }
+   // aggiungo gli ultimi due punti
+   Point3d ptThird1Prev = pSurfBz->GetControlPoint( nUS2 - 1, 0, &bOk) ;
+   vPnt0.push_back( ptThird1Prev) ;
+   Point3d ptFourth1Curr = pSurfBz->GetControlPoint( nUS2, 0, &bOk) ;
+   vPnt0.push_back( ptFourth1Curr) ;
+   Point3d ptThird2Prev = pSurfBz->GetControlPoint( nUS2 - 1, 1, &bOk) ;
+   vPnt1.push_back( ptThird2Prev) ;
+   Point3d ptFourth2Curr = pSurfBz->GetControlPoint( nUS2, 1, &bOk) ;
+   vPnt1.push_back( ptFourth2Curr) ;
+
+   PtrOwner<ICurveComposite> pCC1( CreateCurveComposite()) ;
+   PtrOwner<ICurveComposite> pCC2( CreateCurveComposite()) ;
+   for ( int i = 0 ; i < ssize( vPnt0) - 3 ; i+=3) {
+      PtrOwner<ICurveBezier> cb1( CreateCurveBezier()) ; cb1->Init( 3, false) ;
+      cb1->SetControlPoint( 0, vPnt0[i]) ;
+      cb1->SetControlPoint( 1, vPnt0[i+1]) ;
+      cb1->SetControlPoint( 2, vPnt0[i+2]) ;
+      cb1->SetControlPoint( 3, vPnt0[i+3]) ;
+      pCC1->AddCurve( Release( cb1)) ;
+
+      PtrOwner<ICurveBezier> cb2( CreateCurveBezier()) ; cb2->Init( 3, false) ;
+      cb2->SetControlPoint( 0, vPnt1[i]) ;
+      cb2->SetControlPoint( 1, vPnt1[i+1]) ;
+      cb2->SetControlPoint( 2, vPnt1[i+2]) ;
+      cb2->SetControlPoint( 3, vPnt1[i+3]) ;
+      pCC2->AddCurve( Release( cb2)) ;
+   }
+
+   ////// N.B.:dovrei tener conto anche della patch PRECEDENTE e SUCCESSIVA a quelle indicate, altrimenti non vedo se ho creato flessi al bordo della zona
+#if DEBUG_SMOOTH_CURVATURE
+   VT.push_back( pCC1->Clone()) ;
+   VT.push_back( pCC2->Clone()) ;
+   SaveGeoObj( VT, "C:\\Temp\\bezier\\ruled\\smoothness\\regolarized_first_step.nge") ;
+#endif
+
+   // ora verifico l'eventuale presenza di cambi di concavità non desiderati
+   // se ne trovo su una curva e non sull'altra allora ruoto il terzetto di punti della curva con flesso in modo
+   // da matchare la tangente dell'altra curva
+   PNTINFOVECTOR vPntInfo1, vPntInfo2 ;
+   FillPntInfo( vPnt0, pCC1, vPntInfo1) ;
+   FillPntInfo( vPnt1, pCC2, vPntInfo2) ;
+
+   RemoveInflexionPoints( vPnt0, vPntInfo1, vPntInfo2) ;
+   RemoveInflexionPoints( vPnt1, vPntInfo2, vPntInfo1) ;
+
+   pCC1->Clear() ;
+   pCC2->Clear() ;
+   for ( int i = 0 ; i < ssize( vPnt0) - 3 ; i+=3) {
+      PtrOwner<ICurveBezier> cb1( CreateCurveBezier()) ; cb1->Init( 3, false) ;
+      cb1->SetControlPoint( 0, vPnt0[i]) ;
+      cb1->SetControlPoint( 1, vPnt0[i+1]) ;
+      cb1->SetControlPoint( 2, vPnt0[i+2]) ;
+      cb1->SetControlPoint( 3, vPnt0[i+3]) ;
+      pCC1->AddCurve( Release( cb1)) ;
+
+      PtrOwner<ICurveBezier> cb2( CreateCurveBezier()) ; cb2->Init( 3, false) ;
+      cb2->SetControlPoint( 0, vPnt1[i]) ;
+      cb2->SetControlPoint( 1, vPnt1[i+1]) ;
+      cb2->SetControlPoint( 2, vPnt1[i+2]) ;
+      cb2->SetControlPoint( 3, vPnt1[i+3]) ;
+      pCC2->AddCurve( Release( cb2)) ;
+   }
+
+   // controllo di essere rimasto in tolleranza
+   double dErr = 0 ;
+   CalcApproxError( pCrvOrig1, pCC1, dErr, 20) ;
+   if ( dErr > dTol)
+      return nullptr ;
+   CalcApproxError( pCrvOrig2, pCC2, dErr, 20) ;
+   if ( dErr > dTol)
+      return nullptr ;
+
+   PtrOwner<ISurfBezier> pNewSurf( pSurfBz->Clone()) ;
+   // aggiorno i punti di controllo della superficie di bezier
+   for ( int i = 0 ; i < ssize( vPnt0) ; ++i) {
+      pNewSurf->SetControlPoint( nUS1 + i, 0, vPnt0[i]) ;
+      pNewSurf->SetControlPoint( nUS1 + i, 1, vPnt1[i]) ;
+   }
+   #if DEBUG_SMOOTH_CURVATURE
+      VT.clear() ;
+      VT.push_back( Release(pCC1)) ;
+      VT.push_back( Release(pCC2)) ;
+      SaveGeoObj( VT, "C:\\Temp\\bezier\\ruled\\smoothness\\regolarized.nge") ;
+   #endif
+
+   return Release( pNewSurf) ;
+}

VolZmap.cpp

@@ -29,8 +29,21 @@
 #include <thread>
 #include <future>
 
+#define DEBUG_REMOVE_FINS 0
+#if DEBUG_REMOVE_FINS
+   #include "/EgtDev/Include/EGkGeoObjSave.h"
+   #include "/EgtDev/Include/EGkGeoPoint3d.h"
+   #include "/EgtDev/Include/EGkGeoVector3d.h"
+   std::vector<IGeoObj*> VT ;
+   std::vector<Color> VC ;
+#endif
+
 using namespace std ;
 
+#if !defined(_WIN64)
+   int VolZmap::m_nDexelNbr = 0 ;
+#endif
+
 //----------------------------------------------------------------------------
 GEOOBJ_REGISTER( VOL_ZMAP, NGE_V_ZMP, VolZmap) ;
 
@@ -55,6 +68,13 @@ VolZmap::VolZmap(void)
 //----------------------------------------------------------------------------
 VolZmap::~VolZmap( void)
 {
+  // Se versione 32-bit aggiorno il numero di Dexel complessivi rimuovendo il numero dei correnti
+   #if !defined(_WIN64)
+      int nDexelNbr = 0 ;
+      for ( int i = 0 ; i < ssize( m_nDim) ; ++ i)
+         nDexelNbr += m_nDim[i] ;
+      m_nDexelNbr = max( 0, m_nDexelNbr - nDexelNbr) ;
+   #endif
 }
 
 //----------------------------------------------------------------------------
@@ -75,6 +95,13 @@ VolZmap::Clear( void)
    m_nNumBlock = 0 ;
    m_nConnectedCompoCount = 0 ;
    m_MapFrame.Reset() ;
+  // Se versione 32-bit aggiorno il numero di Dexel complessivi rimuovendo il numero dei correnti
+   #if !defined(_WIN64)
+      int nDexelNbr = 0 ;
+      for ( int i = 0 ; i < ssize( m_nDim) ; ++ i)
+         nDexelNbr += m_nDim[i] ;
+      m_nDexelNbr = max( 0, m_nDexelNbr - nDexelNbr) ;
+   #endif
    for ( int i = 0 ; i < N_MAPS ; ++ i) {
       m_nNx[i] = 0 ;
       m_nNy[i] = 0 ;
@@ -1864,6 +1891,187 @@ VolZmap::MakeUniform( double dToler, bool bIsExtensionFirst, int nToolNum)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+bool
+VolZmap::RemoveFins( const Vector3d& vtDir, double dThick)
+{
+  // Verifico la Validità dello ZMap
+   if ( ! IsValid())
+      return false ;
+
+  // Per sicurezza normalizzo la direzione
+   Vector3d vtMyDir = vtDir ;
+   if ( ! vtMyDir.Normalize())
+      return false ;
+   double dMyThick = max( 10. * EPS_SMALL, dThick) ;
+
+  // Creo lo ZMap per i riferimenti degli intervalli sulle griglie
+   PtrOwner<VolZmap> pZMapCopy( CloneBasicVolZmap( this)) ;
+   if ( IsNull( pZMapCopy)  ||  ! pZMapCopy->IsValid())
+      return false ;
+
+  // Creo uno ZMap per gli intervalli da aggiungere e successivamente da rimuovere
+   VolZmap ZMapExtra ;
+   if ( ! ZMapExtra.CreateEmpty( m_MapFrame.Orig(), m_dMaxZ[1] - m_dMinZ[1], m_dMaxZ[2] - m_dMinZ[2], m_dMaxZ[0] - m_dMinZ[0],
+                                  m_dStep, IsTriDexel()))
+      return false ;
+
+   const double FIN_ANG_DEG_TOL = 55. ; // Approssimazione per eccesso dell'angolo massimo possibile tra una direzione generica
+                                        // e un versore della terna globale ( arccos( 1 / sqrt( 3) ~ 54.375)
+   const double COS_FIN_ANG_DEG_TOL = cos( FIN_ANG_DEG_TOL * DEGTORAD) ;
+   const int NUM_TOOL = 1000 ;         // Identificativo Utensile per riconoscere le parti rimosse
+
+  // NB. Tutti i parametri sono sempre presi dalla Copia dello ZMap corrente
+  // Ciclo sulle griglie
+   DBLVECTOR vdThicks ;
+   if ( IsTriDexel())
+      vdThicks = { dThick, dThick, dThick} ;
+   else
+      vdThicks = { dThick} ;
+   for ( int nGrid = 0 ; nGrid < pZMapCopy->m_nMapNum ; ++ nGrid) {
+     // Verifico se l'angolo tra la direzione degli spilloni della griglia corrente è sotto alla tolleranza rispetto alla direzione
+      double dCosDir = ( nGrid == 0 ? vtMyDir.z :
+                       ( nGrid == 1 ? vtMyDir.x :
+                                      vtMyDir.y)) ;
+      if ( abs( dCosDir) < COS_FIN_ANG_DEG_TOL + EPS_ANG_SMALL)
+         continue ;
+     // Aggiorno l'effettivo valore dello spessore da considerare
+      double dCurrThick = dMyThick / abs( dCosDir) ; // (sicuramente esiste, essendo 55deg il limite)
+      vdThicks[nGrid] = dCurrThick ;
+     // Ciclo sul numero di dexel presenti nella Copia
+      for ( int nDex = 0 ; nDex < ssize( pZMapCopy->m_Values[nGrid]) ; ++ nDex) {
+        // Se il dexel corrente non ha sotto-intervalli passo al successivo
+         if ( pZMapCopy->m_Values[nGrid][nDex].empty())
+            continue ;
+        // Indici del dexel
+         int nI = nDex % m_nNx[nGrid] ;
+         int nJ = nDex / m_nNx[nGrid] ;
+        // Scorro gli intervalli presenti
+         for ( int nInfo = 0 ; nInfo < ssize( pZMapCopy->m_Values[nGrid][nDex]) ; ++ nInfo) {
+           // Recupero l'intervallo corrente
+            Data& Interval = pZMapCopy->m_Values[nGrid][nDex][nInfo] ;
+           // Se entrambi gli estremi dell'intervallo non sono stati toccati dall'utensile, allora passo al successivo
+            bool bAnalyze = ( ( Interval.nToolMin == 1  &&  Interval.nToolMax == 1)  ||
+                              ( Interval.dMax > m_dMaxZ[nGrid] - EPS_SMALL  ||  Interval.dMin < m_dMinZ[nGrid] + EPS_SMALL)) ;
+            if ( ! bAnalyze)
+               continue ;
+           // Se la lunghezza dell'intervallo è superiore allo spessore richiesto, non faccio nulla
+            double dLen = Interval.dMax - Interval.dMin ;
+            if ( dLen > dCurrThick + EPS_ZERO)
+               continue ;
+           // Se ZMap composto da una sola griglia, elimino il contributo lungo la direzione corrente
+            if ( ! IsTriDexel()) {
+               SubtractIntervals( nGrid, nI, nJ, Interval.dMin - EPS_SMALL, Interval.dMax + EPS_SMALL,
+                                  - Interval.vtMinN, - Interval.vtMaxN, NUM_TOOL, true) ;
+            }
+           // Se Tridexel, aggiungo il contributo del cubetto corrente allo ZMap Extra
+            else
+               ZMapExtra.AddStripInterval( nGrid, nI, nJ, Interval.dMin - EPS_SMALL, Interval.dMax + EPS_SMALL, NUM_TOOL) ;
+         }
+      }
+   }
+  // Se non ho aggiunto alcun elemento allo ZMap Extra, non devo fare nulla
+   if ( ! ZMapExtra.IsValid())
+      return true ;
+   #if DEBUG_REMOVE_FINS
+      SaveGeoObj( ZMapExtra.Clone(), "C:\\Temp\\VolZMapSubt0.nge") ;
+   #endif
+
+  // Ciclo sulle griglie dello ZMap Extra
+   for ( int nGrid = 0 ; nGrid < ZMapExtra.m_nMapNum ; ++ nGrid) {
+     // Ciclo sul numero di dexel presenti
+      for ( int nDex = 0 ; nDex < ssize( ZMapExtra.m_Values[nGrid]) ; ++ nDex) {
+        // Se l'intervallo è vuoto, non faccio nulla
+         if ( ZMapExtra.m_Values[nGrid][nDex].empty())
+            continue ;
+        // Indici del dexel
+         int nI = nDex % m_nNx[nGrid] ;
+         int nJ = nDex / m_nNx[nGrid] ;
+        // Scorro i gli Intervalli dello Spillone corrente
+         for ( int nInfo = 0 ; nInfo < ssize( ZMapExtra.m_Values[nGrid][nDex]) ; ++ nInfo) {
+            double dMin = ZMapExtra.m_Values[nGrid][nDex][nInfo].dMin ;
+            double dMax = ZMapExtra.m_Values[nGrid][nDex][nInfo].dMax ;
+            Vector3d vtNMin = ZMapExtra.m_Values[nGrid][nDex][nInfo].vtMinN ;
+            Vector3d vtNMax = ZMapExtra.m_Values[nGrid][nDex][nInfo].vtMaxN ;
+           // sottraggo tali contributi
+            SubtractIntervals( nGrid, nI, nJ, dMin, dMax, - vtNMin, - vtNMax, NUM_TOOL, true) ;
+         }
+      }
+   }
+   if ( ! IsValid())
+      return true ;
+   #if DEBUG_REMOVE_FINS
+      SaveGeoObj( this->Clone(), "C:\\Temp\\VolZMapSubt1.nge") ;
+   #endif
+
+  // Sistemo le Normali sullo ZMap ricavato
+   for ( int nGrid = 0 ; nGrid < m_nMapNum ; ++ nGrid) {
+     // Ciclo sul numero di dexel presenti
+      for ( int nDex = 0 ; nDex < ssize( m_Values[nGrid]) ; ++ nDex) {
+        // Se l'Intervallo è vuoto non faccio nulla
+         if ( m_Values[nGrid][nDex].empty())
+            continue ;
+        // Indici del dexel
+         int nI = nDex % m_nNx[nGrid] ;
+         int nJ = nDex / m_nNx[nGrid] ;
+        // Scorro gli intervalli dello spillone corrente
+         for ( int nInfo = 0 ; nInfo < ssize( m_Values[nGrid][nDex]) ; ++ nInfo) {
+           // Se intervallo con estremo minimo derivante dalla sottrazione con ZMapExtra, medio le normali
+            int nToolMin = m_Values[nGrid][nDex][nInfo].nToolMin ;
+            if ( nToolMin == NUM_TOOL) {
+              // Recupero il valore minimo, se sul bordo dello ZMap corrente non faccio nulla
+               double dMin = m_Values[nGrid][nDex][nInfo].dMin ;
+               if ( dMin > m_dMinZ[nGrid] + EPS_SMALL) {
+                  Vector3d vtMinN = V_NULL ;
+                  double dZMin = INFINITO ;
+                  if ( ! pZMapCopy->ComputePointAndNormalForRemovingFins( nGrid, nI, nJ, dMin, vtMyDir, dThick, true, 1, vtMinN, dZMin)) {
+                     vtMinN = - ( nGrid == 0 ? m_MapFrame.VersZ() : nGrid == 1 ? m_MapFrame.VersX() : m_MapFrame.VersY()) ;
+                     dZMin = dMin ;
+                  }
+                  m_Values[nGrid][nDex][nInfo].vtMinN = vtMinN ;
+                  m_Values[nGrid][nDex][nInfo].dMin = dZMin ;
+               }
+            }
+           // Se intervallo con estremo massimo derivante dalla sottrazione con ZMapExtra, medio le normali
+            int nToolMax = m_Values[nGrid][nDex][nInfo].nToolMax ;
+            if ( nToolMax == NUM_TOOL) {
+              // Recupero il valore massimo, se sul bordo dello ZMap corrente non faccio nulla
+               double dMax = m_Values[nGrid][nDex][nInfo].dMax ;
+               if ( dMax < m_dMaxZ[nGrid] - EPS_SMALL) {
+                  Vector3d vtMaxN = V_NULL ;
+                  double dZMax = INFINITO ;
+                  if ( ! pZMapCopy->ComputePointAndNormalForRemovingFins( nGrid, nI, nJ, dMax, vtMyDir, dThick, false, 1, vtMaxN, dZMax)) {
+                     vtMaxN = ( nGrid == 0 ? m_MapFrame.VersZ() : nGrid == 1 ? m_MapFrame.VersX() : m_MapFrame.VersY()) ;
+                     dZMax = dMax ;
+                  }
+                  m_Values[nGrid][nDex][nInfo].vtMaxN = vtMaxN ;
+                  m_Values[nGrid][nDex][nInfo].dMax = dZMax ;
+               }
+            }
+         }
+      }
+   }
+
+  // Riassegno il Tool dell'utensile alle nuove parti
+   for ( int nGrid = 0 ; nGrid < m_nMapNum ; ++ nGrid) {
+     // Ciclo sul numero di dexel presenti
+      for ( int nDex = 0 ; nDex < ssize( m_Values[nGrid]) ; ++ nDex) {
+        // Se l'Intervallo è vuoto non faccio nulla
+         if ( m_Values[nGrid][nDex].empty())
+            continue ;
+        // Scorro gli intervalli dello spillone corrente
+         for ( int nInfo = 0 ; nInfo < ssize( m_Values[nGrid][nDex]) ; ++ nInfo) {
+            if ( m_Values[nGrid][nDex][nInfo].nToolMin == NUM_TOOL)
+               m_Values[nGrid][nDex][nInfo].nToolMin = 1 ;
+            if ( m_Values[nGrid][nDex][nInfo].nToolMax == NUM_TOOL)
+               m_Values[nGrid][nDex][nInfo].nToolMax = 1 ;
+         }
+      }
+   }
+
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 VolZmap::SetToModifyDexelBlocks( int nGrid, int nDex, int nInt)

VolZmap.h

@@ -81,10 +81,10 @@ class VolZmap : public IVolZmap, public IGeoObjRW
    public :                      // IVolZmap
       bool CopyFrom( const IGeoObj* pGObjSrc) override ;
       bool Clear( void) override ;
-      bool Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex) override ;
-      bool CreateEmpty( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex) override ;
-      bool CreateFromFlatRegion( const ISurfFlatRegion& Surf, double dDimZ, double dStep, bool bTriDex) override ;
-      bool CreateFromTriMesh( const ISurfTriMesh& Surf, double dStep, bool bTriDex, double dExtraBox = 0) override ;
+      bool Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex, int* nError = nullptr) override ;
+      bool CreateEmpty( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex, int* nError = nullptr) override ;
+      bool CreateFromFlatRegion( const ISurfFlatRegion& Surf, double dDimZ, double dStep, bool bTriDex, int* nError = nullptr) override ;
+      bool CreateFromTriMesh( const ISurfTriMesh& Surf, double dStep, bool bTriDex, double dExtraBox = 0, int* nError = nullptr) override ;
       int  GetBlockCount( void) const override ;
       int  GetBlockUpdatingCounter( int nBlock) const override ;
       bool GetBlockTriangles( int nBlock, TRIA3DEXVECTOR& vTria) const override ;
@@ -151,6 +151,7 @@ class VolZmap : public IVolZmap, public IGeoObjRW
       bool AddSurfTm( const ISurfTriMesh* pStm) override ;
       bool SubtractSurfTm( const ISurfTriMesh* pStm) override ;
       bool MakeUniform( double dToler, bool bIsExtensionFirst, int nToolNum) override ;
+      bool RemoveFins( const Vector3d& vtDir, double dThick) override ;
       bool Offset( double dOffs, int nType) override ;
 
    public :                      // IGeoObjRW
@@ -226,7 +227,16 @@ class VolZmap : public IVolZmap, public IGeoObjRW
       typedef std::unordered_map<int, Voxel> VoxelContainer ;
      // Unordered map per la coerenza topologica
       typedef std::unordered_map<int, bool> InterVoxMatter ;
-      
+      #if !defined(_WIN64)
+        // Numero massimo approssimativo di Dexel per versione 32-bit per evitare Crash con memoria
+         #if defined(_DEBUG)
+            static const int MAX_DEXEL_32_BIT = 3000000 + 1 ;
+         #else
+            static const int MAX_DEXEL_32_BIT = 5000000 + 1 ;
+         #endif
+         static int m_nDexelNbr ;                              // numero corrente di Dexel presenti
+      #endif
+
    private :
       bool CopyFrom( const VolZmap& clSrc) ;
       bool ResetGraphics( void) ;
@@ -262,6 +272,7 @@ class VolZmap : public IVolZmap, public IGeoObjRW
       bool UniformIntervalsInVoxel( int nGrid, int nI, int nJ, double dZMin, double dZMax,
                                     double dToler, bool bAdd, int nToolNum, const Vector3d& vtToolMin,
                                     const Vector3d& vtToolMax) ;
+      bool AddStripInterval( int nGrid, int nI, int nJ, double dZMin, double dZMax, int nToolNum) ;
       bool ManageSubIntervalInVoxel( VolZmap* VolZmapRef, int nGrid, int nI, int nJ, int nK, double& dMin, double& dMax,
                                      Vector3d& vtMin, Vector3d& vtMax) ;
      // Spostamenti utensile
@@ -382,9 +393,6 @@ class VolZmap : public IVolZmap, public IGeoObjRW
                            double& dU1, double& dU2) const ;
       bool GetDepthWithDexel( const Point3d& ptP, const Vector3d& vtDir, double& dInLength, double& dOutLength) const ;
       bool GetDepthWithVoxel( const Point3d& ptP, const Vector3d& vtDir, double& dInLength, double& dOutLength) const ;
-      bool IntersLineCylinder( const Point3d& ptLineSt, const Vector3d& vtLineDir,
-                               const Frame3d& CylFrame, double dH, double dRad, bool bTapLow, bool bTapUp,
-                               Point3d& ptInt1, Vector3d& vtN1, Point3d& ptInt2, Vector3d& vtN2) const ;
       bool IntersLineEllipticalCylinder( const Point3d& ptLineSt, const Vector3d& vtLineDir,
                                          const Frame3d& CircFrame, double dRad, double dLongMvLen, double dOrtMvLen,
                                          bool bTapLow, bool bTapUp,
@@ -486,6 +494,11 @@ class VolZmap : public IVolZmap, public IGeoObjRW
      // Funzioni per Offset di Zmap
       bool OffsetFillet( double dOffs) ;
       bool OffsetSharped( double dOffs, int nType) ;
+     // Funzione analisi punti/Normali per Alette
+      bool GetLocalPoint( int nGrid, int nI, int nJ, double dZ, Point3d& ptLoc) ;
+      bool ComputePointAndNormalForRemovingFins( int nGrid, int nI, int nJ, double dZ,
+                                                 const Vector3d& vtDir, double dThick, bool bMinVsMax, int nTool,
+                                                 Vector3d& vtN, double& dNewZ) ;
 
    private :
       enum Move5Axis {

VolZmapCalculus.cpp

@@ -2071,127 +2071,6 @@ VolZmap::CDeSurfTm( const ISurfTriMesh& tmSurf, double dSafeDist, bool bPrecise)
    return false ;
 }
 
-//----------------------------------------------------------------------------
-// Riferimento con origine nel centro della base e asse di simmetria coincidente con l'asse Z.
-// La funzione restituisce true in caso di intersezione, false altrimenti.
-//----------------------------------------------------------------------------
-bool
-VolZmap::IntersLineCylinder( const Point3d& ptLineSt, const Vector3d& vtLineDir,
-                             const Frame3d& CylFrame, double dH, double dRad, bool bTapLow, bool bTapUp,
-                             Point3d& ptInt1, Vector3d& vtN1, Point3d& ptInt2, Vector3d& vtN2) const
-{
-  // Porto la linea nel riferimento del cilindro
-   Point3d ptP = GetToLoc( ptLineSt, CylFrame) ;
-   Vector3d vtV = GetToLoc( vtLineDir, CylFrame) ;
-
-  // Determino le eventuali intersezioni con le due basi a quota minima e massima (solo se linea non parallela ad esse)
-   int nBasInt = 0 ;
-   if ( abs( vtV.z) > EPS_ZERO) {
-      // le linee tangenti al cilindro non sono considerate intersecanti
-      double dEpsRad = ( vtV.IsZeroXY() ? - EPS_SMALL : EPS_SMALL) ;
-      ptInt1 = ptP + ( ( 0 - ptP.z) / vtV.z) * vtV ;
-      if ( ptInt1.x * ptInt1.x + ptInt1.y * ptInt1.y < dRad * dRad + 2 * dRad * dEpsRad) {
-         nBasInt += 1 ;
-         vtN1 = Z_AX ;
-      }
-      ptInt2 = ptP + ( ( dH - ptP.z) / vtV.z) * vtV ;  
-      if ( ptInt2.x * ptInt2.x + ptInt2.y * ptInt2.y < dRad * dRad + 2 * dRad * dEpsRad) {
-         nBasInt += 2 ;
-         vtN2 = - Z_AX ;
-      }
-   }
-
-  // Se la linea interseca entrambe le basi, si sono trovate le due intersezioni
-   if ( nBasInt == 3) {
-     // Porto i punti e i versori nel riferimento globale
-      ptInt1.ToGlob( CylFrame) ;
-      vtN1.ToGlob( CylFrame) ;
-      ptInt2.ToGlob( CylFrame) ;
-      vtN2.ToGlob( CylFrame) ;
-     // Trovate intersezioni
-      return true ;
-   }
-   
-  // Determino le intersezioni con la superficie laterale del cilindro
-   DBLVECTOR vdCoeff{ ptP.x * ptP.x + ptP.y * ptP.y - dRad * dRad,
-                      2 * ( ptP.x * vtV.x + ptP.y * vtV.y),
-                      vtV.x * vtV.x + vtV.y * vtV.y} ;
-   DBLVECTOR vdRoots ;
-   int nRoot = PolynomialRoots( 2, vdCoeff, vdRoots) ;
-
-  // Epsilon per piani di tappo
-   double dEpsLow = ( bTapLow ? - EPS_SMALL : EPS_SMALL) ;
-   double dEpsUp = ( bTapUp ? EPS_SMALL : - EPS_SMALL) ;
-
-  // Elimino le soluzioni cha danno intersezioni fuori dai limiti in Z del cilindro
-   if ( nRoot == 2) {
-      double dIntZ2 = ptP.z + vdRoots[1] * vtV.z ;
-      if ( dIntZ2 < 0 + dEpsLow  ||  dIntZ2 > dH + dEpsUp)
-         -- nRoot ;
-   }
-   if ( nRoot >= 1) {
-      double dIntZ1 = ptP.z + vdRoots[0] * vtV.z ;
-      if ( dIntZ1 < 0 + dEpsLow  ||  dIntZ1 > dH + dEpsUp) {
-         if ( nRoot == 2)
-            vdRoots[0] = vdRoots[1] ;
-         -- nRoot ;
-      }
-   }
-
-  // Due soluzioni: la retta interseca due volte la superficie laterale
-   if ( nRoot == 2) {
-     // Punti di intersezione con la superficie del cilindro
-      ptInt1 = ptP + vdRoots[0] * vtV ;
-      ptInt2 = ptP + vdRoots[1] * vtV ;
-     // Determino le normali
-      vtN1.Set( -ptInt1.x, -ptInt1.y, 0) ;
-      vtN1.Normalize() ;
-      vtN2.Set( -ptInt2.x, -ptInt2.y, 0) ;
-      vtN2.Normalize() ;
-     // Porto i punti e i versori nel riferimento globale
-      ptInt1.ToGlob( CylFrame) ;
-      vtN1.ToGlob( CylFrame) ;
-      ptInt2.ToGlob( CylFrame) ;
-      vtN2.ToGlob( CylFrame) ;
-     // Trovate intersezioni
-      return true ;
-   }
-   
-  // Una soluzione : la retta interseca la superficie laterale e un piano
-   else if ( nRoot == 1) {
-     // Se piano superiore
-      if ( nBasInt == 2) {
-        // Punto di intersezione
-         ptInt1 = ptP + vdRoots[0] * vtV ;
-        // Normale alla superficie del cilindro verso l'interno
-         vtN1.Set( -ptInt1.x, -ptInt1.y, 0) ;
-         vtN1.Normalize() ;
-      }
-     // altrimenti piano inferiore
-      else if ( nBasInt == 1) {
-        // Punto di intersezione
-         ptInt2 = ptP + vdRoots[0] * vtV ;
-        // Normale alla superficie del cilindro verso l'interno
-         vtN2.Set( -ptInt2.x, -ptInt2.y, 0) ;
-         vtN2.Normalize() ;
-      }
-     // altrimenti niente
-      else
-         return false ;
-     // Porto i punti e i versori nel riferimento globale
-      ptInt1.ToGlob( CylFrame) ;
-      vtN1.ToGlob( CylFrame) ;
-      ptInt2.ToGlob( CylFrame) ;
-      vtN2.ToGlob( CylFrame) ;
-     // Trovate intersezioni
-      return true ;
-   }
-
-  // Nessuna soluzione : nessuna intersezione 
-   else
-      return false ;
-}
-
 //----------------------------------------------------------------------------
 // Riferimento con origine nel vertice del cono e asse di simmetria coincidente con l'asse Z.
 // La funzione restituisce true in caso di intersezione, false altrimenti.

VolZmapCreation.cpp

@@ -27,8 +27,8 @@ using namespace std ;
 // ------------------------- CREAZIONE MAPPA --------------------------------------------------------------------------------------
 
 //----------------------------------------------------------------------------
-bool 
-VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex)
+bool
+VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex, int* nError)
 {
   // Controlli sull'ammissibilità delle dimensioni lineari del grezzo e del passo
    if ( dStep < EPS_SMALL  ||  dDimX < EPS_SMALL  ||  dDimY < EPS_SMALL  ||  dDimZ < EPS_SMALL)
@@ -51,7 +51,7 @@ VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, d
    m_nNx[0] = max( int( ( dDimX + EPS_SMALL) / m_dStep + 0.5), 1) ;
    m_nNy[0] = max( int( ( dDimY + EPS_SMALL) / m_dStep + 0.5), 1) ;
 
-  // Numero di componenti connesse 
+  // Numero di componenti connesse
    m_nConnectedCompoCount = 1 ;
 
   // Se tridexel
@@ -67,7 +67,7 @@ VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, d
       m_nNx[1] = 0 ;
       m_nNy[1] = 0 ;
       m_nNx[2] = 0 ;
-      m_nNy[2] = 0 ; 
+      m_nNy[2] = 0 ;
    }
 
    // Definisco il numero di blocchi lungo x,y e z
@@ -81,12 +81,24 @@ VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, d
    for ( int i = 0 ; i < m_nMapNum ; ++ i)
       m_nDim[i] = m_nNx[i] * m_nNy[i] ;
 
+  // Se versione 32-bit controllo di non superare il numero di Dexel massimo
+   #if !defined(_WIN64)
+      for ( int i = 0 ; i < ssize( m_nDim) ; ++ i)
+         m_nDexelNbr += m_nDim[i] ;
+      if ( m_nDexelNbr >= MAX_DEXEL_32_BIT) {
+         Clear() ;
+         if ( nError != nullptr)
+            *nError = 1 ;
+         return false ;
+      }
+   #endif
+
   // Creazione delle celle per ogni mappa
    for ( int i = 0 ; i < m_nMapNum ; ++ i)
       m_Values[i].resize( m_nDim[i]) ;
 
   // Riempimento delle celle
-   for ( int i = 0 ; i < m_nMapNum ; ++ i)
+   for ( int i = 0 ; i < m_nMapNum ; ++ i) {
       for ( int j = 0 ; j < m_nDim[i] ; ++ j) {
 
         // Aggiungo il tratto al dexel vuoto
@@ -98,7 +110,7 @@ VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, d
          switch ( i) {
          case 0 :
             m_Values[i][j][0].vtMinN = - Z_AX ;
-            m_Values[i][j][0].dMax = dDimZ ; 
+            m_Values[i][j][0].dMax = dDimZ ;
             m_Values[i][j][0].vtMaxN = Z_AX ;
             m_Values[i][j][0].nToolMax = 0 ;
             break ;
@@ -113,9 +125,10 @@ VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, d
             m_Values[i][j][0].dMax = dDimY ;
             m_Values[i][j][0].vtMaxN = Y_AX ;
             m_Values[i][j][0].nToolMax = 0 ;
-            break ; 
+            break ;
          }
       }
+   }
 
   // Definizione delle limitazioni iniziali in Z per ogni mappa
    m_dMinZ[0] = 0 ;
@@ -136,7 +149,7 @@ VolZmap::Create( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, d
 
 //----------------------------------------------------------------------------
 bool 
-VolZmap::CreateEmpty( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex)
+VolZmap::CreateEmpty( const Point3d& ptO, double dDimX, double dDimY, double dDimZ, double dStep, bool bTriDex, int* nError)
 {
   // Controlli sull'ammissibilità delle dimensioni lineari del grezzo e del passo
    if ( dStep < EPS_SMALL  ||  dDimX < EPS_SMALL  ||  dDimY < EPS_SMALL  ||  dDimZ < EPS_SMALL)
@@ -187,6 +200,18 @@ VolZmap::CreateEmpty( const Point3d& ptO, double dDimX, double dDimY, double dDi
    for ( int i = 0 ; i < m_nMapNum ; ++ i)
       m_nDim[i] = m_nNx[i] * m_nNy[i] ;
 
+  // Se versione 32-bit controllo di non superare il numero di Dexel massimo
+   #if !defined(_WIN64)
+      for ( int i = 0 ; i < ssize( m_nDim) ; ++ i)
+         m_nDexelNbr += m_nDim[i] ;
+      if ( m_nDexelNbr >= MAX_DEXEL_32_BIT) {
+         Clear() ;
+         if ( nError != nullptr)
+            *nError = 1 ;
+         return false ;
+      }
+   #endif
+
   // Creazione delle celle per ogni mappa
    for ( int i = 0 ; i < m_nMapNum ; ++ i)
       m_Values[i].resize( m_nDim[i]) ;
@@ -210,7 +235,7 @@ VolZmap::CreateEmpty( const Point3d& ptO, double dDimX, double dDimY, double dDi
 
 //----------------------------------------------------------------------------
 bool
-VolZmap::CreateFromFlatRegion( const ISurfFlatRegion& Surf, double dDimZ, double dStep, bool bTriDex) 
+VolZmap::CreateFromFlatRegion( const ISurfFlatRegion& Surf, double dDimZ, double dStep, bool bTriDex, int* nError)
 {
   // Aggiorno la dimensione della mappa 1 o 3
    m_nMapNum = ( bTriDex ? 3 : 1) ;
@@ -250,14 +275,35 @@ VolZmap::CreateFromFlatRegion( const ISurfFlatRegion& Surf, double dDimZ, double
       m_nNx[1] = m_nNy[0] ;
       m_nNy[1] = int( ( dDimZ + EPS_SMALL) / m_dStep + 0.5) ;
       m_nDim[1] = m_nNx[1] * m_nNy[1] ;
-      m_Values[1].resize( m_nDim[1]) ;
       m_nNx[2] = m_nNy[1] ;
       m_nNy[2] = m_nNx[0] ;
       m_nDim[2] = m_nNx[2] * m_nNy[2] ;
+     // Se versione 32-bit controllo di non superare il numero di Dexel massimo
+      #if !defined(_WIN64)
+         for ( int i = 0 ; i < ssize( m_nDim) ; ++ i)
+            m_nDexelNbr += m_nDim[i] ;
+         if ( m_nDexelNbr >= MAX_DEXEL_32_BIT) {
+            Clear() ;
+            if ( nError != nullptr)
+               *nError = 1 ;
+            return false ;
+         }
+      #endif
+      m_Values[1].resize( m_nDim[1]) ;
       m_Values[2].resize( m_nDim[2]) ;
    }
-
+  // Se dimensione singola
    else {
+     // Se versione 32-bit controllo di non superare il numero di Dexel massimo
+      #if !defined(_WIN64)
+         m_nDexelNbr += m_nDim[0] ;
+         if ( m_nDexelNbr >= MAX_DEXEL_32_BIT) {
+            Clear() ;
+            if ( nError != nullptr)
+               *nError = 1 ;
+            return false ;
+         }
+      #endif
       m_nNx[1] = 0 ;
       m_nNy[1] = 0 ;
       m_nDim[1] = 0 ;
@@ -788,7 +834,7 @@ VolZmap::SubtractMapPart( int nMap, int nInfI, int nSupI, int nInfJ, int nSupJ,
 
 //----------------------------------------------------------------------------
 bool
-VolZmap::CreateFromTriMesh( const ISurfTriMesh& Surf, double dStep, bool bTriDex, double dExtraBox)
+VolZmap::CreateFromTriMesh( const ISurfTriMesh& Surf, double dStep, bool bTriDex, double dExtraBox, int* nError)
 {
   // Se la superficie non è chiusa oppure orientata al contrario non ha senso continuare
    double dVol ;
@@ -838,14 +884,33 @@ VolZmap::CreateFromTriMesh( const ISurfTriMesh& Surf, double dStep, bool bTriDex
       m_nNx[1] = m_nNy[0] ;
       m_nNy[1] = int( ( vtLen.z + EPS_SMALL) / m_dStep + 0.5) ;
       m_nDim[1] = m_nNx[1] * m_nNy[1] ;
-      m_Values[1].resize( m_nDim[1]) ;
       m_nNx[2] = m_nNy[1] ;
       m_nNy[2] = m_nNx[0] ;
       m_nDim[2] = m_nNx[2] * m_nNy[2] ;
+      #if !defined(_WIN64)
+         for ( int i = 0 ; i < ssize( m_nDim) ; ++ i)
+            m_nDexelNbr += m_nDim[i] ;
+         if ( m_nDexelNbr >= MAX_DEXEL_32_BIT) {
+            Clear() ;
+            if ( nError != nullptr)
+               *nError = 1 ;
+            return false ;
+         }
+      #endif
+      m_Values[1].resize( m_nDim[1]) ;
       m_Values[2].resize( m_nDim[2]) ;
    }
-
+  // Se a dimensione singola
    else {
+      #if !defined(_WIN64)
+         m_nDexelNbr += m_nDim[0] ;
+         if ( m_nDexelNbr >= MAX_DEXEL_32_BIT) {
+            Clear() ;
+            if ( nError != nullptr)
+               *nError = 1 ;
+            return false ;
+         }
+      #endif
       m_nNx[1] = 0 ;
       m_nNy[1] = 0 ;
       m_nDim[1] = 0 ;

VolZmapOffset.cpp

@@ -21,6 +21,7 @@
 #include "CurveLine.h"
 #include "CurveArc.h"
 #include "GeoConst.h"
+#include "IntersLineCyl.h"
 #include "/EgtDev/Include/EGkStmFromCurves.h"
 #include "/EgtDev/Include/EGkIntersLineSurfTm.h"
 #include "/EgtDev/Include/EgtNumUtils.h"
@@ -968,12 +969,13 @@ VolZmap::CreateOffsetCylinderOnEdge( const Point3d& ptP1, const Point3d& ptP2, d
          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, abs( dOffs), true, true,
-                                  ptInt1, vtN1, ptInt2, vtN2)) {
+         double dU1, dU2 ;
+         if ( IntersLineCyl( ptC, Z_AX, CylFrame, dH, abs( dOffs), true, true,
+                             dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, false)) {
             if ( dOffs > 0.)
-               AddIntervalsForOffset( nGrid, i, j, ptInt1.z, ptInt2.z, -vtN1, -vtN2, nTool, nTool) ;
+               AddIntervalsForOffset( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nTool, nTool) ;
             else
-               SubtractIntervalsForOffset( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nTool) ;
+               SubtractIntervalsForOffset( nGrid, i, j, ptInt1.z, ptInt2.z, -vtN1, -vtN2, nTool) ;
          }
       }
    }

VolZmapVolume.cpp

@@ -21,6 +21,7 @@
 #include "VolZmap.h"
 #include "GeoConst.h"
 #include "IntersLineBox.h"
+#include "IntersLineCyl.h"
 #include "/EgtDev/Include/EGkIntervals.h"
 #include "/EgtDev/Include/EGkStringUtils3d.h"
 #include "/EgtDev/Include/EGkSurfBezier.h"
@@ -845,6 +846,183 @@ VolZmap::UniformIntervalsInVoxel( int nGrid, int nI, int nJ, double dZMin,
    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 --------------------------------------------------------------------------------------
 
 //----------------------------------------------------------------------------
@@ -1588,10 +1766,13 @@ VolZmap::Comp_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, c
    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) ;
@@ -1680,26 +1861,44 @@ VolZmap::Comp_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, c
    }
 
    vector<PNTVECTOR> vvPtCtrl ;
-   // superficie laterale sinistra
-   CurveLine cLineLeftBottom ; cLineLeftBottom.Set( vPntTipEndFront.back(), vPntTipStartFront.back()) ;
-   if ( bInverse)
-      cLineLeftBottom.Invert() ;
-   PtrOwner<CurveBezier> cBezLeftBottom( GetBasicCurveBezier( LineToBezierCurve( &cLineLeftBottom, nDegU, bRat))) ;
-   CurveLine cLineLeftTop ; cLineLeftTop.Set( vPntTopEndFront.back(), vPntTopStartFront.back()) ;
-   PtrOwner<CurveBezier> cBezLeftTop( GetBasicCurveBezier( LineToBezierCurve( &cLineLeftTop, nDegU, bRat))) ;
-   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 ( bInverse)
-      cLineRightBottom.Invert() ;
-   PtrOwner<CurveBezier> cBezRightBottom( GetBasicCurveBezier( LineToBezierCurve( &cLineRightBottom, nDegU, bRat))) ;
-   CurveLine cLineRightTop ; cLineRightTop.Set( vPntTopStartFront.front(), vPntTopEndFront.front()) ;
-   PtrOwner<CurveBezier> cBezRightTop( GetBasicCurveBezier( LineToBezierCurve( &cLineRightTop, nDegU, bRat))) ;
-   vvPtCtrl.emplace_back( cBezRightBottom->GetAllControlPoints()) ;
-   PNTVECTOR vPntRight = cBezRightTop->GetAllControlPoints() ;
-   vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntRight.begin(), vPntRight.end()) ;
+   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() })) ;
@@ -1939,7 +2138,7 @@ VolZmap::Comp_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, c
       vvPtCtrl.emplace_back( cBezTipEndF2->GetAllControlPoints()) ;
       PNTVECTOR vPntEndF2 = cBezTopEndF2->GetAllControlPoints() ;
       vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntEndF2.begin(), vPntEndF2.end()) ;
-      if ( bInverse) {
+      if ( bInverse  ||  bSmallMovement) {
          // chiudo il volume con le superici verticali end back 1
          vvPtCtrl.emplace_back( cBezTipEndB1->GetAllControlPoints()) ;
          PNTVECTOR vPntEndB1 = cBezTopEndB1->GetAllControlPoints() ;
@@ -1958,7 +2157,7 @@ VolZmap::Comp_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, c
       vvPtCtrl.emplace_back( cBezTipStartB2->GetAllControlPoints()) ;
       PNTVECTOR vPntStartB2 = cBezTopStartB2->GetAllControlPoints() ;
       vvPtCtrl.back().insert( vvPtCtrl.back().end(), vPntStartB2.begin(), vPntStartB2.end()) ;
-      if ( bInverse) {
+      if ( bInverse   ||  bSmallMovement) {
          // chiudo il volume con le superici verticali start front 1
          vvPtCtrl.emplace_back( cBezTipStartF1->GetAllControlPoints()) ;
          PNTVECTOR vPntStartF1 = cBezTopStartF1->GetAllControlPoints() ;
@@ -2038,7 +2237,7 @@ VolZmap::Comp_5AxisMilling( int nGrid, const Point3d& ptS, const Point3d& ptE, c
    }
 
    // inizializzo le superfici bilineari e i parametri per le intersezioni
-   for ( int z = 0 ; z < int( vvPtCtrl.size()) ; ++z) {
+   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]) ;
@@ -6051,7 +6250,8 @@ VolZmap::CompCyl_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE, co
          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)) {
+         double dU1, dU2 ;
+         if ( IntersLineCyl( ptC, Z_AX, CylFrame, dH, dRad, bTapB, bTapT, dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, true)) {
             SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
          }
       }
@@ -6096,8 +6296,9 @@ VolZmap::CompConus_Drilling( int nGrid, const Point3d& ptS, const Point3d& ptE,
          Vector3d vtN1, vtN2 ;
 
         // Cilindro
-         if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dH, dMaxRad, true, bTapT,
-                                  ptInt1, vtN1, ptInt2, vtN2)) {
+         double dU1, dU2 ;
+         if ( IntersLineCyl( ptC, Z_AX, CylFrame, dH, dMaxRad, true, bTapT,
+                             dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, true)) {
             SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
          }
 
@@ -6276,7 +6477,8 @@ VolZmap::CompCyl_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE,
 
               // Cilindro iniziale
                CylFrame.ChangeOrig( ptITip) ;
-               if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dHei, dRad, bTapB, bTapT, ptInt1, vtN1, ptInt2, vtN2)) {
+               double dU1, dU2 ;
+               if ( IntersLineCyl( ptC, Z_AX, CylFrame, dHei, dRad, bTapB, bTapT, dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, true)) {
                   SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
                }
 
@@ -6284,7 +6486,7 @@ VolZmap::CompCyl_Milling( int nGrid, const Point3d& ptS, const Point3d& ptE,
               // 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)) {
+               if ( IntersLineCyl( ptC, Z_AX, CylFrame, dHei, dRad, bTapB, bTapT, dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, true)) {
                   SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
                }
 
@@ -6871,7 +7073,8 @@ VolZmap::CompBall_Milling( int nGrid, const Point3d& ptLs, const Point3d& ptLe,
         // Cilindro inviluppo della sfera
          Point3d ptInt1, ptInt2 ;
          Vector3d vtN1, vtN2 ;
-         if ( IntersLineCylinder( ptC, Z_AX, CylFrame, dLengthPath, dRad, false, false, ptInt1, vtN1, ptInt2, vtN2)) {
+         double dU1, dU2 ;
+         if ( IntersLineCyl( ptC, Z_AX, CylFrame, dLengthPath, dRad, false, false, dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, true)) {
             SubtractIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, nToolNum) ;
          }
       }
@@ -7019,15 +7222,15 @@ VolZmap::AddingCylinder( int nGrid, const Point3d& ptS, const Point3d& ptE, cons
                                            
          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()) ;
+         double dU1, dU2 ;
+         if ( IntersLineCyl( ptC, Z_AX, CylFrame, dHei, dRad, true, true,
+                             dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, false)) {
+            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 ( IntersLineCyl( ptC - dLen1 * vtV1, Z_AX, CylFrame, dHei, dRad, true, true,
+                             dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, false)) {
+            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,
@@ -7423,8 +7626,9 @@ VolZmap::AddingSphere( int nGrid, const Point3d& ptS, const Point3d& ptE, double
         // 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()) ;
+         double dU1, dU2 ;
+         if ( IntersLineCyl( ptC, Z_AX, CylFrame, dLengthPath, dRad, false, false, dU1, ptInt1, vtN1, dU2, ptInt2, vtN2, false, false)) {
+            AddIntervals( nGrid, i, j, ptInt1.z, ptInt2.z, vtN1, vtN2, CurrTool.GetToolNum()) ;
          }
       }
    }

Voronoi.cpp

@@ -828,10 +828,19 @@ Voronoi::CalcSpecialPointOffset( PNTVECTVECTOR& vResult, double dOffs)
             Point3d ptTemp ;
             Vector3d vtDir ;
             if ( ! pCrv->GetParamAtPoint( pt, dPar, 100 * EPS_SMALL)  ||  ! pCrv->GetPointD1D2( dPar, ICurve::FROM_MINUS, ptTemp, &vtDir))
-               return false ;
+               continue ;
             vtDir.Normalize() ;
 
-            vResult.emplace_back( pt, vtDir) ;
+           // verifico che il punto non sia già stato trovato
+            bool bAdd = true ;
+            for ( int j = 0 ; j < ssize( vResult) ; j ++) {
+               if ( AreSamePointApprox( vResult[j].first, pt)) {
+                  bAdd = false ;
+                  break ;
+               }
+            }
+            if ( bAdd)
+               vResult.emplace_back( pt, vtDir) ;
          }
       }
 
@@ -1014,8 +1023,17 @@ Voronoi::CalcVroniOffset( ICRVCOMPOPLIST& OffsList, double dOffs)
          RemoveCurveSmallParts( pCrvOffs, 5 * EPS_SMALL) ;
 
         // aggiungo la curva alla lista degli offset
-         if ( ! IsNull( pCrvOffs) &&  pCrvOffs->IsValid()  &&  pCrvOffs->GetCurveCount() > 0)
+         if ( ! IsNull( pCrvOffs) &&  pCrvOffs->IsValid()  &&  pCrvOffs->GetCurveCount() > 0) {
+           // forzo chiusura
+            if ( ! pCrvOffs->IsClosed()) {
+               Point3d ptS ; pCrvOffs->GetStartPoint( ptS) ;
+               Point3d ptE ; pCrvOffs->GetEndPoint( ptE) ;
+               if ( SqDist( ptS, ptE) > 100. * SQ_EPS_SMALL)
+                  return false ;
+               pCrvOffs->Close() ;
+            }
             OffsList.push_back( Release( pCrvOffs)) ;
+         }
       }
 
      // libero la memoria di vroni dedicata agli offset