very simple vtk tetrahedral mesh exporter (might seed a more general vtk exporter)
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T.Alderighi
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6c3c940e34
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ac79dadd89
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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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/**
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@name Load and Save in Tetgen File format
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*/
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//@{
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#ifndef __VCGLIB_TETRAEXPORT_VTK
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#define __VCGLIB_TETRAEXPORT_VTK
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#include <wrap/io_trimesh/precision.h>
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#include <stdio.h>
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namespace vcg
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{
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namespace tetra
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{
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namespace io
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{
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template <class SaveMeshType>
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class ExporterVTK
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{
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public:
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typedef ::vcg::ply::PropDescriptor PropDescriptor;
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typedef typename SaveMeshType::VertexPointer VertexPointer;
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typedef typename SaveMeshType::ScalarType ScalarType;
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typedef typename SaveMeshType::VertexType VertexType;
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typedef typename SaveMeshType::TetraType TetraType;
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typedef typename SaveMeshType::TetraPointer TetraPointer;
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typedef typename SaveMeshType::VertexIterator VertexIterator;
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typedef typename SaveMeshType::TetraIterator TetraIterator;
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enum
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{
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VTK_VERTEX = 1,
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VTK_POLY_VERTEX,
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VTK_LINE,
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VTK_POLY_LINE,
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VTK_TRIANGLE,
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VTK_TRIANGLE_STRIP,
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VTK_POLYGON,
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VTK_PIXEL,
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VTK_QUAD,
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VTK_TETRA,
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VTK_VOXEL,
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VTK_HEXAHEDRON,
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VTK_WEDGE,
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VTK_PYRAMID
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};
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static bool Save(SaveMeshType &m, const char *filename) // V1.0
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{
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FILE *vtkFile;
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const int DGT = vcg::tri::io::Precision<ScalarType>::digits();
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const char* vttp = vcg::tri::io::Precision<ScalarType>::typeName();
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std::string vtkName(filename);
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vtkFile = fopen(vtkName.c_str(), "wb");
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if (vtkFile == NULL)
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return 1;
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fprintf(vtkFile, "# vtk DataFile Version 2.0\n");
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fprintf(vtkFile, "VCG_mesh\n");
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fprintf(vtkFile, "ASCII\n");
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fprintf(vtkFile, "DATASET UNSTRUCTURED_GRID\n");
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fprintf(vtkFile, "POINTS %d %s\n", m.VN(), vttp);
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int vi = 0;
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SimpleTempData<typename SaveMeshType::VertContainer, int> indices(m.vert);
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int maxQ = 0;
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ForEachVertex(m, [&](VertexType &v) {
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indices[&v] = vi++;
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fprintf(vtkFile, "%g %g %g\n", v.P().X(), v.P().Y(), v.P().Z());
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});
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fprintf(vtkFile, "CELLS %d %d\n", m.TN(), m.TN()*5);
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int ti = 0;
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ForEachTetra(m, [&](SaveMeshType::TetraType &t) {
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++ti;
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fprintf(vtkFile, "%d %d %d %d %d\n", 4, indices[t.V(0)], indices[t.V(1)], indices[t.V(2)], indices[t.V(3)]);
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});
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fprintf(vtkFile, "CELL_TYPES %d\n", m.TN());
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ForEachTetra(m, [&](SaveMeshType::TetraType &t) {
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fprintf(vtkFile, "%d\n", VTK_TETRA);
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});
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if( HasPerVertexQuality(m))
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{
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fprintf(vtkFile, "POINT_DATA %d\n", m.VN());
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fprintf(vtkFile, "SCALARS vquality %s 1\n", vttp);
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fprintf(vtkFile, "LOOKUP_TABLE default\n");
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ForEachVertex(m, [&](VertexType &v) {
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fprintf(vtkFile, "%g\n", v.Q());
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});
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}
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if( HasPerTetraQuality(m))
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{
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fprintf(vtkFile, "CELL_DATA %d\n", m.TN());
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fprintf(vtkFile, "SCALARS tquality %s 1\n", vttp);
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fprintf(vtkFile, "LOOKUP_TABLE default\n");
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ForEachTetra(m, [&](TetraType &t) {
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fprintf(vtkFile, "%g\n", t.Q());
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});
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}
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fclose(vtkFile);
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return 0;
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}
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}; // end class
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} // namespace io
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} // namespace tetra
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} // end namespace vcg
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#endif
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