//----------------------------------------------------------------------------
//  EgalTech 2014-2014
//----------------------------------------------------------------------------
// File : EGkCurveByInterp.h   Data : 05.08.14       Versione : 1.5h1
// Contenuto : Dichiarazione della classe CurveByInterp.
//
//
//
// Modifiche : 05.08.14 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

#pragma once

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

class ICurve ;

//----------------------- 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 CurveByInterp
{

   public :
      EGK_EXPORT bool Reset( void) ;
      EGK_EXPORT bool AddPoint( const Point3d& ptP) ;
      EGK_EXPORT ICurve* GetCurve( int nMethod, int nType) ;

   public :
      enum METHOD { BESSEL = 1, AKIMA = 2, AKIMA_CORNER = 3} ;
      enum TYPE { BIARCS = 1, CUBIC_BEZIERS = 2} ;

   private :
      bool CalcAkimaTangents( bool bDetectCorner) ;
      bool CalcBesselTangents( void) ;

   private :
      PNTVECTOR   m_vPnt ;
      DBLVECTOR   m_vPar ;
      VCT3DVECTOR m_vPrevDer ;
      VCT3DVECTOR m_vNextDer ;
} ;