/****************************************************************************
* VCGLib                                                            o o     *
* Visual and Computer Graphics Library                            o     o   *
*                                                                _   O  _   *
* Copyright(C) 2004                                                \/)\/    *
* Visual Computing Lab                                            /\/|      *
* ISTI - Italian National Research Council                           |      *
*                                                                    \      *
* All rights reserved.                                                      *
*                                                                           *
* This program is free software; you can redistribute it and/or modify      *   
* it under the terms of the GNU General Public License as published by      *
* the Free Software Foundation; either version 2 of the License, or         *
* (at your option) any later version.                                       *
*                                                                           *
* This program is distributed in the hope that it will be useful,           *
* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
* for more details.                                                         *
*                                                                           *
****************************************************************************/
/****************************************************************************
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#ifndef __VCG_FACE_PLUS_COMPONENT
#define __VCG_FACE_PLUS_COMPONENT

#include <vcg/space/triangle3.h>

namespace vcg {
  namespace face {
/*
Some naming Rules
All the Components that can be added to a vertex should be defined in the namespace vert:

*/

/*-------------------------- VERTEX ----------------------------------------*/ 
template <class T> class EmptyVertexRef: public T {
public:
 // typedef typename T::VertexType VertexType;
 // typedef typename T::CoordType CoordType;
  inline typename T::VertexType *       & V( const int j ) 	    {	assert(0);		static typename T::VertexType *vp=0; return vp; }
  inline typename T::VertexType * const & V( const int j ) const {	assert(0);		static typename T::VertexType *vp=0; return vp; }
	inline typename T::VertexType * const  cV( const int j ) const {	assert(0);		static typename T::VertexType *vp=0; return vp;	}
	inline       typename T::CoordType & P( const int j ) 	    {	assert(0);		static typename T::CoordType coord(0, 0, 0); return coord;	}
	inline const typename T::CoordType & P( const int j ) const {	assert(0);		static typename T::CoordType coord(0, 0, 0); return coord;	}
	inline const typename T::CoordType &cP( const int j ) const	{	assert(0);		static typename T::CoordType coord(0, 0, 0); return coord;	}
   static bool HasVertexRef()   { return false; }

};
template <class T> class VertexRef: public T {
public:
 // typedef typename T::VertexType VertexType;
 // typedef typename T::VertexType::CoordType CoordType;

  inline typename T::VertexType *       & V( const int j ) 	     { assert(j>=0 && j<3); return v[j]; }
  inline typename T::VertexType * const & V( const int j ) const { assert(j>=0 && j<3); return v[j]; }
	inline typename T::VertexType * const  cV( const int j ) const { assert(j>=0 && j<3);	return v[j]; }

	// Shortcut per accedere ai punti delle facce
	inline       typename T::CoordType & P( const int j ) 	    {	assert(j>=0 && j<3);		return v[j]->P();	}
	inline const typename T::CoordType & P( const int j ) const	{	assert(j>=0 && j<3);		return v[j]->cP(); }
	inline const typename T::CoordType &cP( const int j ) const	{	assert(j>=0 && j<3);		return v[j]->cP(); }

	/** Return the pointer to the ((j+1)%3)-th vertex of the face.
		@param j Index of the face vertex.
	 */
	inline       typename T::VertexType *       &  V0( const int j )       { return V(j);}
	inline       typename T::VertexType *       &  V1( const int j )       { return V((j+1)%3);}
	inline       typename T::VertexType *       &  V2( const int j )       { return V((j+2)%3);}
	inline const typename T::VertexType * const &  V0( const int j ) const { return V(j);}
	inline const typename T::VertexType * const &  V1( const int j ) const { return V((j+1)%3);}
	inline const typename T::VertexType * const &  V2( const int j ) const { return V((j+2)%3);}
	inline const typename T::VertexType * const & cV0( const int j ) const { return cV(j);}
	inline const typename T::VertexType * const & cV1( const int j ) const { return cV((j+1)%3);}
	inline const typename T::VertexType * const & cV2( const int j ) const { return cV((j+2)%3);}

	/// Shortcut per accedere ai punti delle facce
	inline       typename T::CoordType &  P0( const int j )       { return V(j)->P();}
	inline       typename T::CoordType &  P1( const int j )       { return V((j+1)%3)->P();}
	inline       typename T::CoordType &  P2( const int j )       { return V((j+2)%3)->P();}
	inline const typename T::CoordType &  P0( const int j ) const { return V(j)->P();}
	inline const typename T::CoordType &  P1( const int j ) const { return V((j+1)%3)->P();}
	inline const typename T::CoordType &  P2( const int j ) const { return V((j+2)%3)->P();}
	inline const typename T::CoordType & cP0( const int j ) const { return cV(j)->P();}
	inline const typename T::CoordType & cP1( const int j ) const { return cV((j+1)%3)->P();}
	inline const typename T::CoordType & cP2( const int j ) const { return cV((j+2)%3)->P();}

	inline       typename T::VertexType *       & UberV( const int j )	      { assert(j>=0 && j<3); return v[j]; }
	inline const typename T::VertexType * const & UberV( const int j ) const	{ assert(j>=0 && j<3);	return v[j];	}
  static bool HasVertexRef()   { return true; }

  private:
  typename T::VertexType *v[3];
};



/*-------------------------- NORMAL ----------------------------------------*/ 

template <class T> class EmptyNormal: public T {
public:
  //typedef vcg::Point3s NormalType;
  typedef typename T::VertexType::NormalType NormalType;
  NormalType &N() { static NormalType dummy_normal(0, 0, 0); return dummy_normal; }
  const NormalType cN() const { static NormalType dummy_normal(0, 0, 0); return dummy_normal; }
  NormalType &WN(int) { static NormalType dummy_normal(0, 0, 0); return dummy_normal; }
  const NormalType cWN(int) const { static NormalType dummy_normal(0, 0, 0); return dummy_normal; }

  static bool HasWedgeNormal()   { return false; }
  static bool HasFaceNormal()   { return false; }
  static bool HasWedgeNormalOpt()   { return false; }
  static bool HasFaceNormalOpt()   { return false; }
  void ComputeNormal() {assert(0);}
  void ComputeNormalizedNormal() {assert(0);}

};
template <class T> class NormalFromVert: public T {
public:
  typedef typename T::VertexType::NormalType NormalType;
  NormalType &N() { return _norm; }
  NormalType cN() const { return _norm; }
  static bool HasFaceNormal()   { return true; }
  void ComputeNormal() {	_norm = vcg::Normal<typename T::FaceType>(*(static_cast<typename T::FaceType *>(this))); }
  void ComputeNormalizedNormal() {	_norm = vcg::NormalizedNormal(*this);}  

private:
  NormalType _norm;    
};


template <class A, class T> class NormalAbs: public T {
public:
  typedef A NormalType;
  NormalType &N() { return _norm; }
  NormalType cN() const { return _norm; }
  static bool HasFaceNormal()   { return true; }
  
  void ComputeNormal() {	_norm = vcg::Normal<typename T::FaceType>(*(static_cast<typename T::FaceType *>(this))); }
  void ComputeNormalizedNormal() {	_norm = vcg::NormalizedNormal<FaceType>(*this);}

private:
  NormalType _norm;    
};

template <class T> class WedgeNormal: public T {
public:
  typedef typename T::VertexType::NormalType NormalType;
  NormalType &WN(const int j) { return _wnorm[j]; }
  const NormalType cWN(const int j) const { return _wnorm[j]; }
  static bool HasWedgeNormal()   { return true; }

private:
  NormalType _wnorm[3];    
};


template <class T> class Normal3s: public NormalAbs<vcg::Point3s, T> {};
template <class T> class Normal3f: public NormalAbs<vcg::Point3f, T> {};
template <class T> class Normal3d: public NormalAbs<vcg::Point3d, T> {};


/*-------------------------- Texture ----------------------------------------*/ 

template <class TT> class EmptyWedgeTexture: public TT {
public:
  typedef vcg::TCoord2<float,1> TexCoordType;
  TexCoordType &WT(const int) { static TexCoordType dummy_texture; return dummy_texture;}
  TexCoordType const &cWT(const int) const { static TexCoordType dummy_texture; return dummy_texture;}
  static bool HasWedgeTexture()   { return false; }

};
template <class A, class TT> class WedgeTexture: public TT {
public:
  typedef A TexCoordType;
  TexCoordType &WT(const int i) { return _t[i]; }
  TexCoordType const &cWT(const int i) const { return _t[i]; }
  static bool HasWedgeTexture()   { return true; }

private:
  TexCoordType _t;    
};

template <class TT> class WedgeTexture2s: public WedgeTexture<TCoord2<short,1>, TT> {};
template <class TT> class WedgeTexture2f: public WedgeTexture<TCoord2<float,1>, TT> {};
template <class TT> class WedgeTexture2d: public WedgeTexture<TCoord2<double,1>, TT> {};

/*------------------------- FLAGS -----------------------------------------*/ 
template <class T> class EmptyFlag: public T {
public:
	/// Return the vector of Flags(), senza effettuare controlli sui bit
  int &Flags() { static int dummyflags(0); return dummyflags; }
  const int Flags() const { return 0; }
  static bool HasFlag()   { return false; }

};

template <class T> class Flag:  public T {
public:
  Flag(){_flags=0;}
   int &Flags() {return _flags; }
   const int Flags() const {return _flags; }
  static bool HasFlag()   { return true; }


private:
  int  _flags;    
};

/*-------------------------- COLOR ----------------------------------*/ 

template <class T> class EmptyColorQuality: public T {
public:
    typedef float QualityType;
  typedef vcg::Color4b ColorType;
  ColorType &C() { static ColorType dumcolor(vcg::Color4b::White); return dumcolor; }
  ColorType &WC(const int) { static ColorType dumcolor(vcg::Color4b::White); return dumcolor; }
  QualityType &Q() { static QualityType dummyQuality(0); return dummyQuality; }
  static bool HasFaceColor()   { return false; }
  static bool HasWedgeColor()   { return false; }
  static bool HasFaceQuality()   { return false; }
};
template <class A, class T> class Color: public T {
public:
  typedef A ColorType;
  ColorType &C() { return _color; }
  static bool HasFaceColor()   { return true; }
private:
  ColorType _color;    
};

template <class A, class T> class WedgeColor: public T {
public:
  typedef A ColorType;
  ColorType &WC(const int i) { return _color[i]; }
  static bool HasFaceColor()   { return true; }
private:
  ColorType _color[3];    
};

template <class T> class Color4b: public Color<vcg::Color4b, T> {};

/*-------------------------- Quality  ----------------------------------*/ 

template <class T> class EmptyQuality: public T {
public:
};
template <class A, class T> class Quality: public T {
public:
  typedef A QualityType;
  QualityType &Q() { return _quality; }
  static bool HasFaceQuality()   { return true; }

private:
  QualityType _quality;    
};

template <class T> class Qualitys: public Quality<short, T> {};
template <class T> class Qualityf: public Quality<float, T> {};
template <class T> class Qualityd: public Quality<double, T> {};

/*----------------------------- VFADJ ------------------------------*/ 


template <class T> class EmptyAdj: public T {
public:
  typename T::FacePointer       &VFp(const int) { static typename T::FacePointer fp=0; return fp; }
  typename T::FacePointer const cVFp(const int) { static typename T::FacePointer fp=0; return fp; }
  typename T::FacePointer       &FFp(const int) { static typename T::FacePointer fp=0; return fp; }
  typename T::FacePointer const cFFp(const int) { static typename T::FacePointer fp=0; return fp; }
  char &VFi(const int j){static char z=0; return z;};
  char &FFi(const int j){static char z=0; return z;};
  static bool HasVFAdjacency()   {   return false; }
  static bool HasFFAdjacency()   {   return false; }
  static bool HasFFAdjacencyOpt()   {   return false; }
  static bool HasVFAdjacencyOpt()   {   return false; }
};

template <class T> class VFAdj: public T {
public:
  typename T::FacePointer       &VFp(const int j)        { assert(j>=0 && j<3);  return _vfp[j]; }
  typename T::FacePointer const  VFp(const int j) const  { assert(j>=0 && j<3);  return _vfp[j]; }
  typename T::FacePointer const cVFp(const int j) const  { assert(j>=0 && j<3);  return _vfp[j]; }
  char &VFi(const int j) {return _vfi[j]; }
  static bool HasVFAdjacency()      {   return true; }
  static bool HasVFAdjacencyOpt()   {   return false; }
private:
  typename T::FacePointer _vfp[3] ;    
  char _vfi[3] ;    
};
/*----------------------------- FFADJ ------------------------------*/ 


template <class T> class FFAdj: public T {
public:
  typename T::FacePointer       &FFp(const int j)        { assert(j>=0 && j<3);  return _ffp[j]; }
  typename T::FacePointer const  FFp(const int j) const  { assert(j>=0 && j<3);  return _ffp[j]; }
  typename T::FacePointer const cFFp(const int j) const  { assert(j>=0 && j<3);  return _ffp[j]; }
  char &FFi(const int j) {return _ffi[j]; }
  static bool HasFFAdjacency()      {   return true; }
  static bool HasFFAdjacencyOpt()   {   return false; }

private:
  typename T::FacePointer _ffp[3] ;    
  char _ffi[3] ;    
};

  } // end namespace vert
}// end namespace vcg
#endif