114 lines
4.1 KiB
C++
114 lines
4.1 KiB
C++
/****************************************************************************
|
|
* 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. *
|
|
* *
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
****************************************************************************/
|
|
|
|
|
|
#ifndef __VCG_JUMPING_FACE_POS
|
|
#define __VCG_JUMPING_FACE_POS
|
|
|
|
#include <assert.h>
|
|
#include <vcg/simplex/face/pos.h>
|
|
|
|
namespace vcg
|
|
{
|
|
namespace face
|
|
{
|
|
/** \addtogroup face */
|
|
/*@{*/
|
|
|
|
template < class FACE_TYPE >
|
|
class JumpingPos : public Pos< FACE_TYPE >
|
|
{
|
|
public: // Typedefs
|
|
typedef FACE_TYPE FaceType;
|
|
typedef Pos<FaceType> PosType;
|
|
typedef JumpingPos<FaceType> JumpingPosType;
|
|
typedef typename FaceType::VertexType VertexType;
|
|
typedef typename VertexType::CoordType CoordType;
|
|
typedef typename VertexType::ScalarType ScalarType;
|
|
using Pos<FACE_TYPE>::f;
|
|
using Pos<FACE_TYPE>::z;
|
|
using Pos<FACE_TYPE>::FFlip;
|
|
public:
|
|
// Constructors
|
|
JumpingPos() : Pos<FACE_TYPE>() { }
|
|
JumpingPos(FaceType * const pFace, int const z, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, z, pVertex) { }
|
|
JumpingPos(FaceType * const pFace, int const z) : Pos<FACE_TYPE>(pFace, z) { }
|
|
JumpingPos(FaceType * const pFace, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, pVertex) { }
|
|
|
|
/// Move the pos to a border (if exists). Return true if actually succeed to find a border
|
|
bool FindBorder()
|
|
{
|
|
PosType startPos=*this;
|
|
do
|
|
{
|
|
if(f==FFlip() ) {
|
|
PosType::FlipE();
|
|
return true; // we are on a border
|
|
}
|
|
PosType::FlipF();
|
|
PosType::FlipE();
|
|
} while(*this != startPos);
|
|
|
|
return false;
|
|
}
|
|
|
|
/*!
|
|
* Returns the next edge skipping the border
|
|
* _________
|
|
* /\ c | b /\
|
|
* / \ | / \
|
|
* / d \ | / a \
|
|
* /______\|/______\
|
|
* v
|
|
* In this example, if a and d are of-border and the pos is iterating counterclockwise, this method iterate through the faces incident on vertex v,
|
|
* producing the sequence a, b, c, d, a, b, c, ...
|
|
*/
|
|
bool NextFE()
|
|
{
|
|
if ( f==FFlip() ) // we are on a border
|
|
{
|
|
do {
|
|
PosType::FlipF();
|
|
PosType::FlipE();
|
|
} while (f!=FFlip());
|
|
PosType::FlipE();
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
PosType::FlipF();
|
|
PosType::FlipE();
|
|
return true;
|
|
}
|
|
}
|
|
};
|
|
|
|
/*@}*/
|
|
} // end of namespace face
|
|
} // end of namespace vcg
|
|
|
|
#endif // __VCG_JUMPING_FACE_POS
|