add vcglib
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/****************************************************************************
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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) 2004-2016 \/)\/ *
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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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#ifndef __VCGLIB_MESH_ASSERT
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#define __VCGLIB_MESH_ASSERT
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#include <vcg/complex/exception.h>
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#include <vcg/simplex/edge/pos.h>
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#include <vcg/complex/algorithms/update/flag.h>
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namespace vcg {
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namespace tri {
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/**
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* \brief For checking the adequacy of a mesh to a given algorithm.
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*
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* While the many RequireXXX functions allow to check the static correctness of a mesh and
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* have a O(1) complexity, in many cases we need to run more complex checks to be sure that
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* the subsequent algorithm can run without issues.
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* Typical cases are the fact that there are no unreferenced vertices (NoUnreferencedVertex)
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* or a given adjacency is correctly initialized (and not only statically present as a type component).
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*
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* Naming Notes:
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* - First two letters of the function name code the required adjacency involved
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* - The exception text completes the sentence "This exception is thronw when/because...
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*
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*/
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template <class MeshType>
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class MeshAssert
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{
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public:
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typedef typename MeshType::VertexType VertexType;
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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::FaceIterator FaceIterator;
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typedef typename MeshType::CoordType CoordType;
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typedef typename MeshType::ScalarType ScalarType;
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/// \brief Throw vcg::MissingPreconditionException if FF adjacency is not initialized
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static void FFAdjacencyIsInitialized(MeshType &m)
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{
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi)
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{
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if(!fi->IsD())
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for(int i=0;i<fi->VN();++i)
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{
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if(fi->FFp(i)==0)
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throw vcg::MissingPreconditionException("FF adjacency is not initialized");
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}
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if VF adjacency is not initialized
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static void VFAdjacencyIsInitialized(MeshType &m)
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{
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for(VertexIterator vi=m.vert.begin();vi!=m.vert.end();++vi) if(!vi->IsD())
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{
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if(vi->VFp() == nullptr)
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throw vcg::MissingPreconditionException("VF adjacency is not initialized");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if EE adjacency is not initialized
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static void EEAdjacencyIsInitialized(MeshType &m)
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{
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for(auto ei=m.edge.begin();ei!=m.edge.end();++ei) if(!ei->IsD())
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{
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if(ei->EEp(0)==0)
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throw vcg::MissingPreconditionException("EE adjacency is not initialized");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if According to EE adjacency, the edge mesh is not 1-manifold (e.g there are more than 2 edges on a vertex)
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static void EEOneManifold(MeshType &m)
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{
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EEAdjacencyIsInitialized(m);
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for(auto ei=m.edge.begin();ei!=m.edge.end();++ei) if(!ei->IsD())
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{
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if(! edge::IsEdgeManifold(*ei,0) )
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throw vcg::MissingPreconditionException("According to EE adjacency, the edge mesh is not 1-manifold (e.g there are more than 2 edges on a vertex)");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if Vertex Normals are not unit lenght
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static void VertexNormalNormalized(MeshType &m)
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{
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for(VertexIterator vi=m.vert.begin();vi!=m.vert.end();++vi) if(!vi->IsD())
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{
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if(fabs(vi->cN().Norm()-1.0)>0.000001)
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throw vcg::MissingPreconditionException("Vertex Normal are not normalized");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if Face Normals are not unit lenght
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static void FaceNormalNormalized(MeshType &m)
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{
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for(auto fi=m.face.begin();fi!=m.face.end();++fi) if(!fi->IsD())
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{
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if(fabs(fi->cN().Norm()-1.0)>0.000001)
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throw vcg::MissingPreconditionException("Face Normal are not normalized");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if There are unreferenced vertices
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static void NoUnreferencedVertex(MeshType &m)
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{
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UpdateFlags<MeshType>::VertexClearV(m);
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if(!fi->IsD())
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{
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for(int i=0;i<fi->VN();++i) fi->V(i)->SetV();
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}
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for(VertexIterator vi=m.vert.begin();vi!=m.vert.end();++vi)
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if(!vi->IsD())
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{
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if(!vi->IsV())
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throw vcg::MissingPreconditionException("There are unreferenced vertices");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if There are faces with more than three vertices
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static void OnlyTriFace(MeshType &m)
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{
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if(!fi->IsD())
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{
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if(fi->VN()!=3)
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throw vcg::MissingPreconditionException("There are faces with more than three vertices");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if There are non quadrilateral faces
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static void OnlyQuadFace(MeshType &m)
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{
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if(!fi->IsD())
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{
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if(fi->VN()!=4)
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throw vcg::MissingPreconditionException("There are non quadrilateral faces");
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if The mesh is not composed only by edges (no faces needed or allowed)
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static void OnlyEdgeMesh(MeshType &m)
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{
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if(m.FN()>0)
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throw vcg::MissingPreconditionException("The mesh is not composed only by edges (no faces needed or allowed)");
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}
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/// \brief Throw vcg::MissingPreconditionException if According to FF adjacency, the mesh is not two manifold (e.g. there are more than two faces on an edge)
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static void FFTwoManifoldEdge(MeshType & m)
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{
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if(!fi->IsD())
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{
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for(int i=0;i<fi->VN();++i){
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if(!face::IsManifold(*fi,i))
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throw vcg::MissingPreconditionException("According to FF adjacency, the mesh is not two manifold (e.g. there are more than two faces on an edge)");
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}
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}
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}
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/// \brief Throw vcg::MissingPreconditionException if the FaceEdgeSelection bit is not consistent
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static void ConsistentFaceEdgeSelection(MeshType &m)
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{
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if(!fi->IsD())
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{
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for(int i=0;i<fi->VN();++i){
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if(fi->IsFaceEdgeS(i) != fi->FFp(i)->IsFaceEdgeS(fi->FFi(i)))
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throw vcg::MissingPreconditionException("FaceEdgeSelection bit is not consistent");
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}
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}
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}
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};
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} // end namespace tri
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} // end namespace vcg
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#endif // __VCGLIB_MESH_ASSERT
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