//----------------------------------------------------------------------------
//  EgalTech 2017-2017
//----------------------------------------------------------------------------
// File : EGkDistPointTria.h     Data : 19.10.17        Versione : 1.8j4
// Contenuto : Dichiarazione della classe distanza Punto da Triangolo.
//
//
//
// Modifiche : 19.10.17 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

#pragma once

#include "/EgtDev/Include/EGkTriangle3d.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

//-----------------------------------------------------------------------------
class DistPointTriangle
{
   public :
      EGK_EXPORT DistPointTriangle( const Point3d& ptP, const Triangle3d& Tria) ;

   public :
      EGK_EXPORT bool GetSqDist( double& dSqDist) ;
      EGK_EXPORT bool GetDist( double& dDist) ;
      EGK_EXPORT bool IsEpsilon( double dTol)
                        { double dSqDist ; return ( GetSqDist( dSqDist) && ( dSqDist < SQ_EPS_ZERO || dSqDist < dTol * dTol)) ; }
      EGK_EXPORT bool IsSmall( void)
                        { return IsEpsilon( EPS_SMALL) ; }
      EGK_EXPORT bool IsZero( void)
                        { return IsEpsilon( EPS_ZERO) ; }
      EGK_EXPORT bool GetMinDistPoint( Point3d& ptMinDist) ;

   private :
      void Calculate( const Point3d& ptP, const Triangle3d& Tria) ;

   private :
      double  m_dSqDist ;
      double  m_dDist ;
      Point3d m_ptMinDist ;
} ;