cleaned up a bit the interface and formatting of the code of the voronoiclustering alg
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@ -8,7 +8,7 @@
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* \ *
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* \ *
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* All rights reserved. *
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* All rights reserved. *
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* *
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* *
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* This program is free software; you can redistribute it and/or modify *
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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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* 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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* 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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* (at your option) any later version. *
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@ -21,11 +21,9 @@
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* *
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* *
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****************************************************************************/
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****************************************************************************/
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#ifndef VORONOI_PROCESSING_H
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#ifndef VORONOI_PROCESSING_H
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#define VORONOI_PROCESSING_H
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#define VORONOI_PROCESSING_H
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//#include <vcg/simplex/face/topology.h>
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#include <vcg/complex/algorithms/geodesic.h>
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#include <vcg/complex/algorithms/geodesic.h>
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#include <vcg/complex/algorithms/update/color.h>
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#include <vcg/complex/algorithms/update/color.h>
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namespace vcg
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namespace vcg
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@ -35,41 +33,38 @@ namespace tri
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template <class MeshType>
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template <class MeshType>
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class ClusteringSampler
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class ClusteringSampler
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{
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{
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public:
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public:
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typedef typename MeshType::VertexType VertexType;
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typedef typename MeshType::VertexType VertexType;
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ClusteringSampler()
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ClusteringSampler(std::vector<VertexType *> &_vec): sampleVec(_vec)
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{
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{
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sampleVec=0;
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sampleVec = _vec;
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}
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}
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ClusteringSampler(std::vector<VertexType *> *_vec)
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{
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std::vector<VertexType *> &sampleVec;
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sampleVec = _vec;
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}
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void AddVert(const VertexType &p)
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std::vector<VertexType *> *sampleVec;
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{
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sampleVec.push_back((VertexType *)(&p));
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void AddVert(const VertexType &p)
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}
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{
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}; // end class ClusteringSampler
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sampleVec->push_back((VertexType *)(&p));
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}
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}; // end class ClusteringSampler
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template <class MeshType >
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template <class MeshType >
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class VoronoiProcessing
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class VoronoiProcessing
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{
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{
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typedef typename MeshType::CoordType CoordType;
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typedef typename MeshType::CoordType CoordType;
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typedef typename MeshType::ScalarType ScalarType;
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typedef typename MeshType::ScalarType ScalarType;
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typedef typename MeshType::VertexType VertexType;
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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::VertexPointer VertexPointer;
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typedef typename MeshType::VertexIterator VertexIterator;
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typedef typename MeshType::VertexIterator VertexIterator;
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typedef typename MeshType::FacePointer FacePointer;
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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::FaceIterator FaceIterator;
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typedef typename MeshType::FaceType FaceType;
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typedef typename MeshType::FaceType FaceType;
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typedef typename MeshType::FaceContainer FaceContainer;
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typedef typename MeshType::FaceContainer FaceContainer;
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public:
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public:
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// Given a vector of point3f it finds the closest vertices on the mesh.
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// Given a vector of point3f it finds the closest vertices on the mesh.
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@ -118,18 +113,18 @@ static void VoronoiColoring(MeshType &m, std::vector<VertexType *> &seedVec, boo
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tri::Geodesic<MeshType> g;
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tri::Geodesic<MeshType> g;
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VertexPointer farthest;
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VertexPointer farthest;
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if(frontierFlag)
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if(frontierFlag)
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{
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{
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//static_cast<VertexPointer>(NULL) has been introduced just to avoid an error in the MSVS2010's compiler confusing pointer with int. You could use nullptr to avoid it, but it's not supported by all compilers.
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//static_cast<VertexPointer>(NULL) has been introduced just to avoid an error in the MSVS2010's compiler confusing pointer with int. You could use nullptr to avoid it, but it's not supported by all compilers.
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//The error should have been removed from MSVS2012
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//The error should have been removed from MSVS2012
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std::pair<float,VertexPointer> zz(0.0f,static_cast<VertexPointer>(NULL));
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std::pair<float,VertexPointer> zz(0.0f,static_cast<VertexPointer>(NULL));
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std::vector< std::pair<float,VertexPointer> > regionArea(m.vert.size(),zz);
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std::vector< std::pair<float,VertexPointer> > regionArea(m.vert.size(),zz);
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std::vector<VertexPointer> borderVec;
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std::vector<VertexPointer> borderVec;
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GetAreaAndFrontier(m, sources, regionArea, borderVec);
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GetAreaAndFrontier(m, sources, regionArea, borderVec);
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tri::Geodesic<MeshType>::Compute(m,borderVec);
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tri::Geodesic<MeshType>::Compute(m,borderVec);
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}
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}
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tri::UpdateColor<MeshType>::PerVertexQualityRamp(m);
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tri::UpdateColor<MeshType>::PerVertexQualityRamp(m);
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}
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}
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// It associates the faces with a given vertex according to the vertex associations
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// It associates the faces with a given vertex according to the vertex associations
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@ -242,153 +237,157 @@ static void GetAreaAndFrontier(MeshType &m, PerVertexPointerHandle &sources,
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std::vector< std::pair<float,VertexPointer> > ®ionArea,
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std::vector< std::pair<float,VertexPointer> > ®ionArea,
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std::vector<VertexPointer> &borderVec)
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std::vector<VertexPointer> &borderVec)
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{
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{
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tri::UpdateFlags<MeshType>::VertexClearV(m);
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tri::UpdateFlags<MeshType>::VertexClearV(m);
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi)
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi)
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{
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{
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if( sources[(*fi).V(0)] != sources[(*fi).V(1)] ||
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if( sources[(*fi).V(0)] != sources[(*fi).V(1)] ||
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sources[(*fi).V(0)] != sources[(*fi).V(2)] )
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sources[(*fi).V(0)] != sources[(*fi).V(2)] )
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{
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{
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for(int i=0;i<3;++i)
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for(int i=0;i<3;++i)
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{
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{
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(*fi).V(i)->SetV();
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(*fi).V(i)->SetV();
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(*fi).V(i)->C() = Color4b::Black;
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(*fi).V(i)->C() = Color4b::Black;
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}
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}
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}
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}
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else // the face belongs to a single region; accumulate area;
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else // the face belongs to a single region; accumulate area;
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{
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{
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if(sources[(*fi).V(0)] != 0)
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if(sources[(*fi).V(0)] != 0)
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{
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{
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int seedIndex = sources[(*fi).V(0)] - &*m.vert.begin();
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int seedIndex = sources[(*fi).V(0)] - &*m.vert.begin();
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regionArea[seedIndex].first+=DoubleArea(*fi);
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regionArea[seedIndex].first+=DoubleArea(*fi);
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regionArea[seedIndex].second=sources[(*fi).V(0)];
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regionArea[seedIndex].second=sources[(*fi).V(0)];
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}
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}
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}
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}
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}
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}
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// Collect the frontier vertexes
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// Collect the frontier vertexes
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borderVec.clear();
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borderVec.clear();
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for(VertexIterator vi=m.vert.begin();vi!=m.vert.end();++vi)
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for(VertexIterator vi=m.vert.begin();vi!=m.vert.end();++vi)
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if((*vi).IsV()) borderVec.push_back(&*vi);
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if((*vi).IsV()) borderVec.push_back(&*vi);
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}
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}
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static void VoronoiRelaxing(MeshType &m, std::vector<VertexType *> &seedVec, int relaxIter, int /*percentileClamping*/, vcg::CallBackPos *cb=0)
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static void VoronoiRelaxing(MeshType &m, std::vector<VertexType *> &seedVec, int relaxIter, int /*percentileClamping*/, vcg::CallBackPos *cb=0)
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{
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{
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for(int iter=0;iter<relaxIter;++iter)
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tri::RequireVFAdjacency(m);
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{
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if(cb) cb(iter*100/relaxIter,"Voronoi Lloyd Relaxation: First Partitioning");
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// first run: find for each point what is the closest to one of the seeds.
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typename MeshType::template PerVertexAttributeHandle<VertexPointer> sources;
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sources = tri::Allocator<MeshType>:: template AddPerVertexAttribute<VertexPointer> (m,"sources");
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tri::Geodesic<MeshType>::Compute(m,seedVec,std::numeric_limits<ScalarType>::max(),0,&sources);
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// Delete all the (hopefully) small regions that have not been reached by the seeds;
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typename MeshType::template PerVertexAttributeHandle<VertexPointer> sources;
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tri::UpdateFlags<MeshType>::VertexClearV(m);
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sources = tri::Allocator<MeshType>:: template AddPerVertexAttribute<VertexPointer> (m,"sources");
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for(int i=0;i<m.vert.size();++i)
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if(sources[i]==0) m.vert[i].SetV();
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for(FaceIterator fi=m.face.begin(); fi!=m.face.end();++fi)
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for(int iter=0;iter<relaxIter;++iter)
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if(fi->V(0)->IsV() || fi->V(1)->IsV() || fi->V(2)->IsV() )
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{
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{
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if(cb) cb(iter*100/relaxIter,"Voronoi Lloyd Relaxation: First Partitioning");
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face::VFDetach(*fi);
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// first run: find for each point what is the closest to one of the seeds.
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tri::Allocator<MeshType>::DeleteFace(m,*fi);
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}
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qDebug("Deleted faces not reached: %i -> %i",int(m.face.size()),m.fn);
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tri::Clean<MeshType>::RemoveUnreferencedVertex(m);
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tri::Allocator<MeshType>::CompactFaceVector(m);
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tri::Allocator<MeshType>::CompactVertexVector(m);
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//static_cast<VertexPointer>(NULL) has been introduced just to avoid an error in the MSVS2010's compiler confusing pointer with int. You could use nullptr to avoid it, but it's not supported by all compilers.
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tri::Geodesic<MeshType>::Compute(m,seedVec,std::numeric_limits<ScalarType>::max(),0,&sources);
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//The error should have been removed from MSVS2012
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std::pair<float,VertexPointer> zz(0.0f,static_cast<VertexPointer>(NULL));
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std::vector< std::pair<float,VertexPointer> > regionArea(m.vert.size(),zz);
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std::vector<VertexPointer> borderVec;
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GetAreaAndFrontier(m, sources, regionArea, borderVec);
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// Delete all the (hopefully) small regions that have not been reached by the seeds;
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tri::UpdateFlags<MeshType>::VertexClearV(m);
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// Smaller area region are discarded
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for(int i=0;i<m.vert.size();++i)
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Distribution<float> H;
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if(sources[i]==0) m.vert[i].SetV();
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for(FaceIterator fi=m.face.begin(); fi!=m.face.end();++fi)
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if(fi->V(0)->IsV() || fi->V(1)->IsV() || fi->V(2)->IsV() )
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{
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face::VFDetach(*fi);
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tri::Allocator<MeshType>::DeleteFace(m,*fi);
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}
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// qDebug("Deleted faces not reached: %i -> %i",int(m.face.size()),m.fn);
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tri::Clean<MeshType>::RemoveUnreferencedVertex(m);
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tri::Allocator<MeshType>::CompactFaceVector(m);
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tri::Allocator<MeshType>::CompactVertexVector(m);
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//static_cast<VertexPointer>(NULL) has been introduced just to avoid an error in the MSVS2010's compiler confusing pointer with int. You could use nullptr to avoid it, but it's not supported by all compilers.
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//The error should have been removed from MSVS2012
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std::pair<float,VertexPointer> zz(0.0f,static_cast<VertexPointer>(NULL));
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std::vector< std::pair<float,VertexPointer> > regionArea(m.vert.size(),zz);
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std::vector<VertexPointer> borderVec;
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GetAreaAndFrontier(m, sources, regionArea, borderVec);
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// Smaller area region are discarded
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Distribution<float> H;
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for(size_t i=0;i<regionArea.size();++i)
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for(size_t i=0;i<regionArea.size();++i)
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if(regionArea[i].second) H.Add(regionArea[i].first);
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if(regionArea[i].second) H.Add(regionArea[i].first);
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float areaThreshold;
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if(iter==0) areaThreshold = H.Percentile(.1f);
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else areaThreshold = H.Percentile(.001f);
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//qDebug("We have found %i regions range (%f %f), avg area is %f, Variance is %f 10perc is %f",(int)seedVec.size(),H.Min(),H.Max(),H.Avg(),H.StandardDeviation(),areaThreshold);
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if(cb) cb(iter*100/relaxIter,"Voronoi Lloyd Relaxation: Searching New Seeds");
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tri::Geodesic<MeshType>::Compute(m,borderVec);
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tri::UpdateColor<MeshType>::PerVertexQualityRamp(m);
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// Search the local maxima for each region and use them as new seeds
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float areaThreshold;
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std::vector< std::pair<float,VertexPointer> > seedMaxima(m.vert.size(),zz);
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if(iter==0) areaThreshold = H.Percentile(.1f);
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for(VertexIterator vi=m.vert.begin();vi!=m.vert.end();++vi)
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else areaThreshold = H.Percentile(.001f);
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{
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//qDebug("We have found %i regions range (%f %f), avg area is %f, Variance is %f 10perc is %f",(int)seedVec.size(),H.Min(),H.Max(),H.Avg(),H.StandardDeviation(),areaThreshold);
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int seedIndex = tri::Index(m,sources[vi]);
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if(seedMaxima[seedIndex].first < (*vi).Q())
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if(cb) cb(iter*100/relaxIter,"Voronoi Lloyd Relaxation: Searching New Seeds");
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{
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seedMaxima[seedIndex].first=(*vi).Q();
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tri::Geodesic<MeshType>::Compute(m,borderVec);
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seedMaxima[seedIndex].second=&*vi;
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tri::UpdateColor<MeshType>::PerVertexQualityRamp(m);
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}
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}
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// Search the local maxima for each region and use them as new seeds
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std::vector<VertexPointer> newSeeds;
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std::vector< std::pair<float,VertexPointer> > seedMaxima(m.vert.size(),zz);
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for(VertexIterator vi=m.vert.begin();vi!=m.vert.end();++vi)
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{
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int seedIndex = tri::Index(m,sources[vi]);
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if(seedMaxima[seedIndex].first < (*vi).Q())
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{
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seedMaxima[seedIndex].first=(*vi).Q();
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seedMaxima[seedIndex].second=&*vi;
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}
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}
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std::vector<VertexPointer> newSeeds;
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for(size_t i=0;i<seedMaxima.size();++i)
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for(size_t i=0;i<seedMaxima.size();++i)
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if(seedMaxima[i].second)
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if(seedMaxima[i].second)
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{
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{
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seedMaxima[i].second->C() = Color4b::Gray;
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seedMaxima[i].second->C() = Color4b::Gray;
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if(regionArea[i].first >= areaThreshold)
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if(regionArea[i].first >= areaThreshold)
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newSeeds.push_back(seedMaxima[i].second);
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newSeeds.push_back(seedMaxima[i].second);
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}
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}
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tri::UpdateColor<MeshType>::PerVertexQualityRamp(m);
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tri::UpdateColor<MeshType>::PerVertexQualityRamp(m);
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for(size_t i=0;i<seedVec.size();++i)
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for(size_t i=0;i<seedVec.size();++i)
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seedVec[i]->C() = Color4b::Black;
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seedVec[i]->C() = Color4b::Black;
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for(size_t i=0;i<borderVec.size();++i)
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for(size_t i=0;i<borderVec.size();++i)
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borderVec[i]->C() = Color4b::Gray;
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borderVec[i]->C() = Color4b::Gray;
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swap(newSeeds,seedVec);
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swap(newSeeds,seedVec);
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for(size_t i=0;i<seedVec.size();++i)
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for(size_t i=0;i<seedVec.size();++i)
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seedVec[i]->C() = Color4b::White;
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seedVec[i]->C() = Color4b::White;
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}
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tri::Allocator<MeshType>::DeletePerVertexAttribute (m,"sources");
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tri::Allocator<MeshType>::DeletePerVertexAttribute (m,"sources");
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}
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}
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}
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// Base vertex voronoi coloring algorithm.
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// it assumes VF adjacency. No attempt of computing real geodesic distnace is done. Just a BFS visit starting from the seeds.
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static void TopologicalVertexColoring(MeshType &m, std::vector<VertexType *> &seedVec)
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{
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std::queue<VertexPointer> VQ;
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tri::UpdateQuality<MeshType>::VertexConstant(m,0);
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for(size_t i=0;i<seedVec.size();++i)
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{
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VQ.push(seedVec[i]);
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seedVec[i]->Q()=i+1;
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}
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while(!VQ.empty())
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{
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VertexPointer vp = VQ.front();
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VQ.pop();
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std::vector<VertexPointer> vertStar;
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vcg::face::VVStarVF<FaceType>(vp,vertStar);
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for(typename std::vector<VertexPointer>::iterator vv = vertStar.begin();vv!=vertStar.end();++vv)
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{
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if((*vv)->Q()==0)
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{
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(*vv)->Q()=vp->Q();
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VQ.push(*vv);
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}
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}
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} // end while(!VQ.empty())
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}
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// Base vertex voronoi coloring algorithm.
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// it assumes VF adjacency. No attempt of computing real geodesic distnace is done. Just a BFS visit starting from the seeds.
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static void TopologicalVertexColoring(MeshType &m, std::vector<VertexType *> &seedVec)
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{
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std::queue<VertexPointer> VQ;
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tri::UpdateQuality<MeshType>::VertexConstant(m,0);
|
||||||
|
|
||||||
|
for(size_t i=0;i<seedVec.size();++i)
|
||||||
|
{
|
||||||
|
VQ.push(seedVec[i]);
|
||||||
|
seedVec[i]->Q()=i+1;
|
||||||
|
}
|
||||||
|
|
||||||
|
while(!VQ.empty())
|
||||||
|
{
|
||||||
|
VertexPointer vp = VQ.front();
|
||||||
|
VQ.pop();
|
||||||
|
|
||||||
|
std::vector<VertexPointer> vertStar;
|
||||||
|
vcg::face::VVStarVF<FaceType>(vp,vertStar);
|
||||||
|
for(typename std::vector<VertexPointer>::iterator vv = vertStar.begin();vv!=vertStar.end();++vv)
|
||||||
|
{
|
||||||
|
if((*vv)->Q()==0)
|
||||||
|
{
|
||||||
|
(*vv)->Q()=vp->Q();
|
||||||
|
VQ.push(*vv);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} // end while(!VQ.empty())
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
// Drastic Simplification algorithm.
|
// Drastic Simplification algorithm.
|
||||||
// Similar in philosopy to the classic grid clustering but using a voronoi partition instead of the regular grid.
|
// Similar in philosopy to the classic grid clustering but using a voronoi partition instead of the regular grid.
|
||||||
|
@ -397,22 +396,22 @@ static void TopologicalVertexColoring(MeshType &m, std::vector<VertexType *> &se
|
||||||
// mNew is created by collasping onto a single vertex all the vertices that lies in the same cluster.
|
// mNew is created by collasping onto a single vertex all the vertices that lies in the same cluster.
|
||||||
// Non degenerate triangles are preserved.
|
// Non degenerate triangles are preserved.
|
||||||
|
|
||||||
static void VoronoiClustering(MeshType &mOld, MeshType &mNew, std::vector<VertexType *> &seedVec)
|
static void VoronoiClustering(MeshType &mOld, MeshType &mNew, std::vector<VertexType *> &seedVec)
|
||||||
{
|
{
|
||||||
std::set<Point3i> clusteredFace;
|
std::set<Point3i> clusteredFace;
|
||||||
|
|
||||||
FaceIterator fi;
|
FaceIterator fi;
|
||||||
for(fi=mOld.face.begin();fi!=mOld.face.end();++fi)
|
for(fi=mOld.face.begin();fi!=mOld.face.end();++fi)
|
||||||
{
|
{
|
||||||
if( (fi->V(0)->Q() != fi->V(1)->Q() ) &&
|
if( (fi->V(0)->Q() != fi->V(1)->Q() ) &&
|
||||||
(fi->V(0)->Q() != fi->V(2)->Q() ) &&
|
(fi->V(0)->Q() != fi->V(2)->Q() ) &&
|
||||||
(fi->V(1)->Q() != fi->V(2)->Q() ) )
|
(fi->V(1)->Q() != fi->V(2)->Q() ) )
|
||||||
clusteredFace.insert( Point3i(int(fi->V(0)->Q()), int(fi->V(1)->Q()), int(fi->V(2)->Q())));
|
clusteredFace.insert( Point3i(int(fi->V(0)->Q()), int(fi->V(1)->Q()), int(fi->V(2)->Q())));
|
||||||
}
|
}
|
||||||
|
|
||||||
tri::Allocator<MeshType>::AddVertices(mNew,seedVec.size());
|
tri::Allocator<MeshType>::AddVertices(mNew,seedVec.size());
|
||||||
for(size_t i=0;i< seedVec.size();++i)
|
for(size_t i=0;i< seedVec.size();++i)
|
||||||
mNew.vert[i].ImportLocal(*(seedVec[i]));
|
mNew.vert[i].ImportData(*(seedVec[i]));
|
||||||
|
|
||||||
tri::Allocator<MeshType>::AddFaces(mNew,clusteredFace.size());
|
tri::Allocator<MeshType>::AddFaces(mNew,clusteredFace.size());
|
||||||
std::set<Point3i>::iterator fsi; ;
|
std::set<Point3i>::iterator fsi; ;
|
||||||
|
|
Loading…
Reference in New Issue