110 lines
4.4 KiB
C++
110 lines
4.4 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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History
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$Log: not supported by cvs2svn $
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Revision 1.4 2006/05/16 21:36:54 cignoni
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Removed unused box function and rewrote initial comment.
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Revision 1.3 2006/05/15 13:12:36 pietroni
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Updating of edge values id divided into 2 functions ( the first one update only a face...) added also resetting of edges flags.. (see first line of Set function)
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Revision 1.2 2004/05/12 18:52:35 ganovelli
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removed call to ComputeRT and put its body here
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Revision 1.1 2004/05/12 10:39:45 ganovelli
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created
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****************************************************************************/
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#ifndef __VCG_TRI_UPDATE_EDGES
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#define __VCG_TRI_UPDATE_EDGES
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#include <vcg/space/plane3.h>
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namespace vcg {
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namespace tri {
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/// \ingroup trimesh
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/// \headerfile edges.h vcg/complex/trimesh/update/edges.h
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/// \brief This class is used to compute or update the precomputed data used to efficiently compute point-face distances.
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template <class ComputeMeshType>
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class UpdateEdges
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{
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public:
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typedef ComputeMeshType MeshType;
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typedef typename MeshType::VertexType VertexType;
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typedef typename MeshType::VertexPointer VertexPointer;
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typedef typename MeshType::VertexIterator VertexIterator;
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typedef typename MeshType::FaceType FaceType;
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typedef typename MeshType::FacePointer FacePointer;
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typedef typename MeshType::FaceIterator FaceIterator;
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typedef typename MeshType::FaceType::ScalarType ScalarType;
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static void Set(FaceType &f)
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{
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f.Flags() = f.Flags() & (~(FaceType::NORMX|FaceType::NORMY|FaceType::NORMZ));
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// Primo calcolo degli edges
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f.Edge(0) = f.V(1)->P(); f.Edge(0) -= f.V(0)->P();
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f.Edge(1) = f.V(2)->P(); f.Edge(1) -= f.V(1)->P();
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f.Edge(2) = f.V(0)->P(); f.Edge(2) -= f.V(2)->P();
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// Calcolo di plane
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f.Plane().SetDirection(f.Edge(0)^f.Edge(1));
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f.Plane().SetOffset(f.Plane().Direction().dot(f.V(0)->P()));
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f.Plane().Normalize();
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// Calcolo migliore proiezione
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ScalarType nx = math::Abs(f.Plane().Direction()[0]);
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ScalarType ny = math::Abs(f.Plane().Direction()[1]);
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ScalarType nz = math::Abs(f.Plane().Direction()[2]);
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ScalarType d;
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if(nx>ny && nx>nz) { f.Flags() |= FaceType::NORMX; d = 1/f.Plane().Direction()[0]; }
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else if(ny>nz) { f.Flags() |= FaceType::NORMY; d = 1/f.Plane().Direction()[1]; }
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else { f.Flags() |= FaceType::NORMZ; d = 1/f.Plane().Direction()[2]; }
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// Scalatura spigoli
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f.Edge(0)*=d;
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f.Edge(1)*=d;
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f.Edge(2)*=d;
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}
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static void Set(ComputeMeshType &m)
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{
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FaceIterator f;
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for(f = m.face.begin(); f!=m.face.end(); ++f)
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if(!(*f).IsD())
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Set(*f);
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}
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}; // end class
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} // End namespace
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} // End namespace
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#endif
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