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104 lines
3.8 KiB
C++
104 lines
3.8 KiB
C++
/*
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#
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# File : vtk.h
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# ( C++ header file - CImg plug-in )
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#
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# Description : CImg plugin that implements a way to save 3d scene as TK legacy file format.
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# This file is a part of the CImg Library project.
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# ( http://cimg.eu )
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#
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# Copyright : Haz-Edine Assemlal
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# ( http://www.cim.mcgill.ca/~assemlal/ )
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#
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# License : CeCILL v2.0
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# ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html )
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#
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# This software is governed by the CeCILL license under French law and
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# abiding by the rules of distribution of free software. You can use,
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# modify and/ or redistribute the software under the terms of the CeCILL
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# license as circulated by CEA, CNRS and INRIA at the following URL
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# "http://www.cecill.info".
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#
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# As a counterpart to the access to the source code and rights to copy,
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# modify and redistribute granted by the license, users are provided only
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# with a limited warranty and the software's author, the holder of the
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# economic rights, and the successive licensors have only limited
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# liability.
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#
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# In this respect, the user's attention is drawn to the risks associated
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# with loading, using, modifying and/or developing or reproducing the
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# software by the user in light of its specific status of free software,
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# that may mean that it is complicated to manipulate, and that also
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# therefore means that it is reserved for developers and experienced
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# professionals having in-depth computer knowledge. Users are therefore
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# encouraged to load and test the software's suitability as regards their
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# requirements in conditions enabling the security of their systems and/or
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# data to be ensured and, more generally, to use and operate it in the
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# same conditions as regards security.
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#
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# The fact that you are presently reading this means that you have had
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# knowledge of the CeCILL license and that you accept its terms.
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#
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*/
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#ifndef cimg_plugin_vtk
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#define cimg_plugin_vtk
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// Save 3D scene in legacy VTK format
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/* *this: CImgList of points
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* faces: CImgList of faces
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* colors: CImgList of colors,
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* opacities: CImgList of opacities
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*/
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template<typename tf, typename tc, typename to>
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CImgList<T>& save_vtk(const char* const filename,
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const CImgList<tf>& faces,
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const CImgList<tc>& colors,
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const CImgList<to>& opacities) {
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// Open file
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std::FILE *const nfile = cimg::fopen(filename,"w");
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// Header
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std::fprintf(nfile,"# vtk DataFile Version 3.0\n");
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std::fprintf(nfile,"%s\n",filename);
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std::fprintf(nfile,"ASCII\n");
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std::fprintf(nfile,"DATASET UNSTRUCTURED_GRID\n");
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// Points
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std::fprintf(nfile,"POINTS %u float\n",points.size());
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cimglist_for(points,p)
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std::fprintf(nfile,"%f %f %f\n",points[p](0),points[p](1),points[p](2));
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std::fprintf(nfile,"\n");
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// Faces (valid only for triangles - type 5)
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if (faces) {
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std::fprintf(nfile,"CELLS %u %u\n",faces.size(),faces.size()*4);
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cimglist_for(faces,f)
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std::fprintf(nfile,"%d %u %u %u\n",3,faces[f](0),faces[f](1),faces[f](2));
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std::fprintf(nfile,"CELL_TYPES %u\n",faces.size());
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cimglist_for(faces,f)
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std::fprintf(nfile,"%d\n",5);
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std::fprintf(nfile,"\n");
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}
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// Colors and Opacities
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std::fprintf(nfile,"CELL_DATA %d\n",colors.size());
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std::fprintf(nfile,"COLOR_SCALARS colors 4\n");
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const tc tcmax = cimg::type<tc>::max();
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cimglist_for(colors,t)
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std::fprintf(nfile,"%f %f %f %f\n",
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(float)colors[t](0)/tcmax,
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(float)colors[t](1)/tcmax,
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(float)colors[t](2)/tcmax,
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opacities[t](0));
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std::fprintf(nfile,"\n");
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// Close file
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cimg::fclose(nfile);
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return *this;
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}
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#endif /* cimg_plugin_vtk */
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