97 lines
3.8 KiB
C++
97 lines
3.8 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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****************************************************************************/
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#ifndef __VCG_JUMPING_FACE_POS
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#define __VCG_JUMPING_FACE_POS
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#include <assert.h>
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#include <vcg/simplex/face/pos.h>
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namespace vcg
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{
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namespace face
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{
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/** \addtogroup face */
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/*@{*/
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template < class FACE_TYPE >
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class JumpingPos : public Pos< FACE_TYPE >
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{
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public: // Typedefs
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typedef FACE_TYPE FaceType;
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typedef Pos<FaceType> PosType;
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typedef JumpingPos<FaceType> JumpingPosType;
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typedef typename FaceType::VertexType VertexType;
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typedef typename VertexType::CoordType CoordType;
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typedef typename VertexType::ScalarType ScalarType;
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using Pos<FACE_TYPE>::f;
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using Pos<FACE_TYPE>::z;
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using Pos<FACE_TYPE>::FFlip;
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public:
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// Constructors
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JumpingPos() : Pos<FACE_TYPE>() { m_AlreadyJumped = false; }
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JumpingPos(FaceType * const pFace, int const z, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, z, pVertex) { m_AlreadyJumped = false; }
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JumpingPos(FaceType * const pFace, int const z) : Pos<FACE_TYPE>(pFace, z) { m_AlreadyJumped = false; }
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JumpingPos(FaceType * const pFace, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, pVertex) { m_AlreadyJumped = false; }
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/*!
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* Returns the next edge skipping the border
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* _________
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* /\ c | b /\
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* / \ | / \
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* / d \ | / a \
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* /______\|/______\
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* v
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* 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,
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* producing the sequence a, b, c, d, a.
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*/
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void NextE()
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{
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if (face::IsBorder(*f,z) && !m_AlreadyJumped)
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{
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do PosType::NextE();
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while (f!=FFlip());
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m_AlreadyJumped = true;
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}
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else
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{
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PosType::NextE();
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m_AlreadyJumped = false;
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}
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}
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protected:
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bool m_AlreadyJumped;
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};
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/*@}*/
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} // end of namespace face
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} // end of namespace vcg
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#endif // __VCG_JUMPING_FACE_POS
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