//----------------------------------------------------------------------------
//  EgalTech 2014-2015
//----------------------------------------------------------------------------
// File : EGkPlane3d.h           Data : 25.02.15          Versione : 1.6b7
// Contenuto : Dichiarazione classe piano Plane3d.
//
//
//
// Modifiche : 08.04.14 DS Creazione modulo.
//             25.02.15 DS Agg. PointInPlane*.
//
//----------------------------------------------------------------------------

#pragma once

#include "/EgtDev/Include/EGkFrame3d.h"

//-----------------------------------------------------------------------------
class Plane3d
{
   public :
      Plane3d( void) : m_vtN( V_NULL), m_dDist( 0) {}
      bool Set( double dDist, const Vector3d& vtN)
               {  m_vtN = vtN ;
                  if ( ! m_vtN.Normalize()) {
                     m_vtN = V_NULL ;
                     return false ;
                  }
                  m_dDist = dDist ;
                  return true ;
               }
      bool Set( const Point3d& ptP, const Vector3d& vtN)
               {  m_vtN = vtN ;
                  if ( ! m_vtN.Normalize()) {
                     m_vtN = V_NULL ;
                     return false ;
                  }
                  m_dDist = ( ptP - ORIG) * m_vtN ;
                  return true ;
               }
      bool Set( const Point3d& ptP1, const Point3d& ptP2, const Point3d& ptP3)
               { if ( AreSamePointApprox( ptP1, ptP2)  ||
                      AreSamePointApprox( ptP2, ptP3)  ||
                      AreSamePointApprox( ptP3, ptP1)) {
                    m_vtN = V_NULL ;
                    return false ;
                 }
                 Vector3d vtN = ( ptP2 - ptP1) ^ ( ptP3 - ptP2) ;
                 return Set( ptP1, vtN) ;
               }
      void Reset( void)
               { m_vtN = V_NULL ;
                 m_dDist = 0 ;
               }
      bool IsValid( void) const
              { return ! m_vtN.IsSmall() ; }
      const Vector3d& GetVersN( void) const
               { return m_vtN ; }
      double GetDist( void) const
               { return m_dDist ; }
      Point3d GetPoint( void) const
               { return ( ORIG + m_dDist * m_vtN) ; }
      void Translate( const Vector3d& vtMove)
              { Point3d ptP = ORIG + m_dDist * m_vtN ;
                ptP.Translate( vtMove) ;
                m_dDist = ( ptP - ORIG) * m_vtN ; }
      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dAngDeg)
              { double dAngRad = dAngDeg * DEGTORAD ;
                return Rotate( ptAx, vtAx, cos( dAngRad), sin( dAngRad)) ; }
      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dCosAng, double dSinAng)
              { Point3d ptP = ORIG + m_dDist * m_vtN ;
                if ( ! ptP.Rotate( ptAx, vtAx, dCosAng, dSinAng)  ||  ! m_vtN.Rotate( vtAx, dCosAng, dSinAng))
                   return false ;
                m_dDist = ( ptP - ORIG) * m_vtN ;
                return true ; }
      bool Scale( const Frame3d& frRef, double dCoeffX, double dCoeffY, double dCoeffZ)
              { Point3d ptP = ORIG + m_dDist * m_vtN ;
                Frame3d frOCS ;
                if ( ! frOCS.Set( ptP, m_vtN)  ||  ! frOCS.PseudoScale( frRef, dCoeffX, dCoeffY, dCoeffZ))
                   return false ;
                m_vtN = frOCS.VersZ() ;
                m_dDist = ( frOCS.Orig() - ORIG) * m_vtN ;
                return true ; }
      bool Mirror( const Point3d& ptOn, const Vector3d& vtNorm)
              { Point3d ptP = ORIG + m_dDist * m_vtN ;
                if ( ! ptP.Mirror( ptOn, vtNorm)  ||  ! m_vtN.Mirror( vtNorm))
                   return false ;
                m_dDist = ( ptP - ORIG) * m_vtN ;
                return true ; }
      bool Shear( const Point3d& ptOn, const Vector3d& vtNorm, const Vector3d& vtDir, double dCoeff)
              { Point3d ptP = ORIG + m_dDist * m_vtN ;
                Frame3d frOCS ;
                if ( ! frOCS.Set( ptP, m_vtN)  ||  ! frOCS.PseudoShear( ptOn, vtNorm, vtDir, dCoeff))
                   return false ;
                m_vtN = frOCS.VersZ() ;
                m_dDist = ( frOCS.Orig() - ORIG) * m_vtN ;
                return true ; }
      bool ToGlob( const Frame3d& frRef)
              { Point3d ptP = ORIG + m_dDist * m_vtN ;
                if ( ! ptP.ToGlob( frRef)  ||  ! m_vtN.ToGlob( frRef))
                   return false ;
                m_dDist = ( ptP - ORIG) * m_vtN ;
                return true ; }
      bool ToLoc( const Frame3d& frRef)
              { Point3d ptP = ORIG + m_dDist * m_vtN ;
                if ( ! ptP.ToLoc( frRef)  ||  ! m_vtN.ToLoc( frRef))
                   return false ;
                m_dDist = ( ptP - ORIG) * m_vtN ;
                return true ; }
      bool LocToLoc( const Frame3d& frOri, const Frame3d& frDest)
              { if ( AreSameFrame( frOri, frDest))
                   return true ;
                return ( ToGlob( frOri)  &&  ToLoc( frDest)) ; }
      void Offset( double dDist)
              { m_dDist += dDist ; }
      void Invert( void)
              { m_dDist = - m_dDist ; m_vtN = - m_vtN ; }
   private :
      Vector3d m_vtN ;
      double   m_dDist ;
} ;

//-----------------------------------------------------------------------------
inline double
DistPointPlane( const Point3d& ptP, const Plane3d& plPlane)
{
   return ((( ptP - ORIG) * plPlane.GetVersN()) - plPlane.GetDist()) ;
}

//-----------------------------------------------------------------------------
inline Point3d
ProjectPointOnPlane( const Point3d& ptP, const Plane3d& plPlane)
{
   return ( ptP - DistPointPlane( ptP, plPlane) * plPlane.GetVersN()) ;
}

//-----------------------------------------------------------------------------
inline bool
PointInPlaneEpsilon( const Point3d& ptP, const Plane3d& plPlane, double dToler)
{
   return ( abs( (( ptP - ORIG) * plPlane.GetVersN()) - plPlane.GetDist()) < dToler) ;
}

//-----------------------------------------------------------------------------
inline bool
PointInPlaneApprox( const Point3d& ptP, const Plane3d& plPlane)
{
   return ( abs( (( ptP - ORIG) * plPlane.GetVersN()) - plPlane.GetDist()) < EPS_SMALL) ;
}

//-----------------------------------------------------------------------------
inline bool
PointInPlaneExact( const Point3d& ptP, const Plane3d& plPlane)
{
   return ( abs( (( ptP - ORIG) * plPlane.GetVersN()) - plPlane.GetDist()) < EPS_ZERO) ;
}