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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004-2016 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
#ifndef TETRAMESH_SUPPORT_H
#define TETRAMESH_SUPPORT_H
#include <vcg/simplex/tetrahedron/topology.h>
namespace vcg {
namespace tri {
template <class TetraMesh, class TriMesh>
inline void CreateTriMeshFromTTBorder(TetraMesh & tetramesh, TriMesh & trimesh)
{
typedef typename TetraMesh::VertexPointer VertexPointer;
typedef typename TriMesh::FacePointer FacePointer;
RequireTTAdjacency(tetramesh);
tri::UpdateTopology<TetraMesh>::TetraTetra(tetramesh);
trimesh.Clear();
std::vector<VertexPointer> verts;
typedef typename TetraMesh::TetraType TetraType;
ForEachTetra(tetramesh, [&] (TetraType & t) {
for (int i = 0; i < 4; ++i)
if (vcg::tetrahedron::IsTTBorder(t, i))
{
verts.push_back(t.V(Tetra::VofF(i, 0)));
verts.push_back(t.V(Tetra::VofF(i, 1)));
verts.push_back(t.V(Tetra::VofF(i, 2)));
}
});
typedef typename TriMesh::VertexIterator VertexIterator;
typedef typename TriMesh::FaceIterator FaceIterator;
VertexIterator vi = tri::Allocator<TriMesh>::AddVertices(trimesh, verts.size());
FaceIterator fi = tri::Allocator<TriMesh>::AddFaces(trimesh, verts.size() / 3);
for (int i = 0; i < verts.size(); i += 3)
{
fi->Alloc(3);
vi->P() = verts[i + 0]->P();
fi->V(0) = &*vi;
++vi;
vi->P() = verts[i + 1]->P();
fi->V(1) = &*vi;
++vi;
vi->P() = verts[i + 2]->P();
fi->V(2) = &*vi;
++vi;
++fi;
}
//do it while you build the mesh
vcg::tri::Clean<TriMesh>::RemoveDuplicateVertex(trimesh);
vcg::tri::Allocator<TriMesh>::CompactEveryVector(trimesh);
}
} // end namespace tri
} // end namespace vcg
#endif // EXTRUDE_H
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