Include/EGkPoint3d.h

//----------------------------------------------------------------------------
//  EgalTech 2013-2013
//----------------------------------------------------------------------------
// File : EGkPoint3d.h           Data : 20.11.13          Versione : 1.3a1
// Contenuto : Dichiarazione della classe Punto 3d.
//
//
//
// Modifiche : 30.12.12 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

#pragma once

#include "/EgtDev/Include/EGkVector3d.h"

//----------------------- Macro per import/export ----------------------------
#undef EGK_EXPORT
#if defined( I_AM_EGK)            // da definirsi solo nella DLL
   #define EGK_EXPORT __declspec( dllexport)
#else
   #define EGK_EXPORT __declspec( dllimport)
#endif

//-------------------------- Forward Definition -------------------------------
class Frame3d ;

//-----------------------------------------------------------------------------
class EGK_EXPORT Point3d
{
   public :
      inline Point3d( double dX, double dY, double dZ) { x = dX ; y = dY ; z = dZ ;}
      inline Point3d( double dX, double dY) { x = dX ; y = dY ; z = 0 ;}
      inline Point3d( void) { x = 0 ; y = 0 ; z = 0 ;}
      inline void Set( double dX, double dY, double dZ) { x = dX ; y = dY ; z = dZ ;}
      inline const Point3d& operator =( const Point3d& ptSrc)
                            { if ( &ptSrc != this) {
                                 x = ptSrc.x , y = ptSrc.y , z = ptSrc.z ; }
                              return *this ; }
   public :
      void Translate( const Vector3d& vtMove) ;
      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dAngRad) ;
      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dCosAng, double dSinAng) ;
      bool Scale( const Point3d& ptCen, double dCoeffX, double dCoeffY, double dCoeffZ) ;
      bool Mirror( const Point3d& ptOn, const Vector3d& vtNorm) ;
      bool ToGlob( const Frame3d& frRef) ;
      bool ToLoc( const Frame3d& frRef) ;

   public :
      double x ;
      double y ;
      double z ;
} ;

//----------------------------------------------------------------------------
// Punti notevoli
//----------------------------------------------------------------------------
const Point3d ORIG( 0, 0, 0) ;

//----------------------------------------------------------------------------
// Somma di due punti
// (valida solo se equivalente ad una combinazione baricentrica).
//----------------------------------------------------------------------------
inline Point3d 
operator+( const Point3d& ptP1, const Point3d& ptP2)
{
   return Point3d( ptP1.x + ptP2.x, ptP1.y + ptP2.y, ptP1.z + ptP2.z) ; 
}

//----------------------------------------------------------------------------
// Somma di un punto e un vettore
//----------------------------------------------------------------------------
inline Point3d 
operator+( const Point3d& ptP1, const Vector3d& vtV2)
{
   return Point3d( ptP1.x + vtV2.x, ptP1.y + vtV2.y, ptP1.z + vtV2.z) ; 
}

//----------------------------------------------------------------------------
// Opposto di un punto
//----------------------------------------------------------------------------
inline Vector3d 
operator-( const Point3d& ptP)
{
   return Vector3d( - ptP.x, - ptP.y, - ptP.z) ; 
}

//----------------------------------------------------------------------------
// Differenza di due punti, genera un vettore
//----------------------------------------------------------------------------
inline Vector3d 
operator-( const Point3d& ptP1, const Point3d& ptP2)
{
   return Vector3d( ptP1.x - ptP2.x, ptP1.y - ptP2.y, ptP1.z - ptP2.z) ; 
}

//----------------------------------------------------------------------------
// Sottrazione di un punto e un vettore
//----------------------------------------------------------------------------
inline Point3d 
operator-( const Point3d& ptP1, const Vector3d& vtV2)
{
   return Point3d( ptP1.x - vtV2.x, ptP1.y - vtV2.y, ptP1.z - vtV2.z) ; 
}

//----------------------------------------------------------------------------
// Prodotto con uno scalare
//----------------------------------------------------------------------------
inline Point3d 
operator*( const Point3d& ptP, double dMul)
{
   return Point3d( ptP.x * dMul, ptP.y * dMul, ptP.z * dMul) ; 
}

//----------------------------------------------------------------------------
inline Point3d 
operator*( double dMul, const Point3d& ptP)
{
   return Point3d( ptP.x * dMul, ptP.y * dMul, ptP.z * dMul) ; 
}

//----------------------------------------------------------------------------
// Somma mediata di due punti (baricentrica)
//----------------------------------------------------------------------------
inline Point3d 
Media( const Point3d& ptP1, const Point3d& ptP2, double dCoeff)
{
   return Point3d( ( 1 - dCoeff) * ptP1.x + dCoeff * ptP2.x,
                   ( 1 - dCoeff) * ptP1.y + dCoeff * ptP2.y,
                   ( 1 - dCoeff) * ptP1.z + dCoeff * ptP2.z) ;
}

//----------------------------------------------------------------------------
// Quadrato della distanza tra due punti
//----------------------------------------------------------------------------
inline double 
DistSq( const Point3d& ptP1, const Point3d& ptP2)
{
   double dX = ptP1.x - ptP2.x ;
   double dY = ptP1.y - ptP2.y ;
   double dZ = ptP1.z - ptP2.z ;

   return ( dX * dX + dY * dY + dZ * dZ) ; 
}

//----------------------------------------------------------------------------
// Distanza tra due punti
//----------------------------------------------------------------------------
inline double 
Dist( const Point3d& ptP1, const Point3d& ptP2)
{
   double dX = ptP1.x - ptP2.x ;
   double dY = ptP1.y - ptP2.y ;
   double dZ = ptP1.z - ptP2.z ;

   if ( fabs( dY) < EPS_ZERO  &&  fabs( dZ) < EPS_ZERO)
      return fabs( dX) ;
   if ( fabs( dZ) < EPS_ZERO  &&  fabs( dX) < EPS_ZERO)
      return fabs( dY) ;
   if ( fabs( dX) < EPS_ZERO  &&  fabs( dY) < EPS_ZERO)
      return fabs( dZ) ;

   return sqrt( dX * dX + dY * dY + dZ * dZ) ; 
}

//----------------------------------------------------------------------------
// Verifica che due punti sono quasi coincidenti (Small error -> Near)
//----------------------------------------------------------------------------
inline bool
AreSamePointNear( const Point3d& ptP1, const Point3d& ptP2)
{
   return ( DistSq( ptP1, ptP2) < ( EPS_SMALL * EPS_SMALL)) ;
}

//----------------------------------------------------------------------------
// Verifica che due punti sono esattamente coincidenti (Zero error -> Exact)
//----------------------------------------------------------------------------
inline bool
AreSamePointExact( const Point3d& ptP1, const Point3d& ptP2)
{
   return ( DistSq( ptP1, ptP2) < ( EPS_ZERO * EPS_ZERO)) ;
}