90 lines
3.7 KiB
C++
90 lines
3.7 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) 2004-2016 \/)\/ *
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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 TETRAMESH_SUPPORT_H
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#define TETRAMESH_SUPPORT_H
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#include <vcg/simplex/tetrahedron/topology.h>
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namespace vcg {
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namespace tri {
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template <class TetraMesh, class TriMesh>
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inline void CreateTriMeshFromTTBorder(TetraMesh & tetramesh, TriMesh & trimesh)
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{
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typedef typename TetraMesh::VertexPointer VertexPointer;
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typedef typename TriMesh::FacePointer FacePointer;
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RequireTTAdjacency(tetramesh);
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tri::UpdateTopology<TetraMesh>::TetraTetra(tetramesh);
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trimesh.Clear();
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std::vector<VertexPointer> verts;
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typedef typename TetraMesh::TetraType TetraType;
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ForEachTetra(tetramesh, [&] (TetraType & t) {
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for (int i = 0; i < 4; ++i)
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if (vcg::tetrahedron::IsTTBorder(t, i))
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{
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verts.push_back(t.V(Tetra::VofF(i, 0)));
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verts.push_back(t.V(Tetra::VofF(i, 1)));
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verts.push_back(t.V(Tetra::VofF(i, 2)));
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}
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});
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typedef typename TriMesh::VertexIterator VertexIterator;
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typedef typename TriMesh::FaceIterator FaceIterator;
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VertexIterator vi = tri::Allocator<TriMesh>::AddVertices(trimesh, verts.size());
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FaceIterator fi = tri::Allocator<TriMesh>::AddFaces(trimesh, verts.size() / 3);
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for (int i = 0; i < verts.size(); i += 3)
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{
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fi->Alloc(3);
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vi->P() = verts[i + 0]->P();
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fi->V(0) = &*vi;
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++vi;
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vi->P() = verts[i + 1]->P();
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fi->V(1) = &*vi;
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++vi;
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vi->P() = verts[i + 2]->P();
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fi->V(2) = &*vi;
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++vi;
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++fi;
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}
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//do it while you build the mesh
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vcg::tri::Clean<TriMesh>::RemoveDuplicateVertex(trimesh);
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vcg::tri::Allocator<TriMesh>::CompactEveryVector(trimesh);
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}
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} // end namespace tri
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} // end namespace vcg
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#endif // EXTRUDE_H
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