507 lines
16 KiB
C++
507 lines
16 KiB
C++
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include "readMESH.h"
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template <typename Scalar, typename Index>
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IGL_INLINE bool igl::readMESH(
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const std::string mesh_file_name,
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std::vector<std::vector<Scalar > > & V,
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std::vector<std::vector<Index > > & T,
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std::vector<std::vector<Index > > & F)
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{
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using namespace std;
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FILE * mesh_file = fopen(mesh_file_name.c_str(),"r");
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if(NULL==mesh_file)
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{
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fprintf(stderr,"IOError: %s could not be opened...",mesh_file_name.c_str());
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return false;
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}
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return igl::readMESH(mesh_file,V,T,F);
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}
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template <typename Scalar, typename Index>
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IGL_INLINE bool igl::readMESH(
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FILE * mesh_file,
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std::vector<std::vector<Scalar > > & V,
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std::vector<std::vector<Index > > & T,
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std::vector<std::vector<Index > > & F)
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{
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using namespace std;
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#ifndef LINE_MAX
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# define LINE_MAX 2048
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#endif
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char line[LINE_MAX];
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bool still_comments;
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V.clear();
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T.clear();
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F.clear();
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// eat comments at beginning of file
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still_comments= true;
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while(still_comments)
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{
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if(fgets(line,LINE_MAX,mesh_file) == NULL)
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{
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fprintf(stderr, "Error: couldn't find start of .mesh file");
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fclose(mesh_file);
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return false;
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}
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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char str[LINE_MAX];
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sscanf(line," %s",str);
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// check that first word is MeshVersionFormatted
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if(0!=strcmp(str,"MeshVersionFormatted"))
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{
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fprintf(stderr,
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"Error: first word should be MeshVersionFormatted not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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int one = -1;
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if(2 != sscanf(line,"%s %d",str,&one))
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{
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// 1 appears on next line?
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fscanf(mesh_file," %d",&one);
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}
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if(one != 1)
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{
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fprintf(stderr,"Error: second word should be 1 not %d\n",one);
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fclose(mesh_file);
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return false;
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}
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// eat comments
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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sscanf(line," %s",str);
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// check that third word is Dimension
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if(0!=strcmp(str,"Dimension"))
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{
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fprintf(stderr,"Error: third word should be Dimension not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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int three = -1;
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if(2 != sscanf(line,"%s %d",str,&three))
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{
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// 1 appears on next line?
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fscanf(mesh_file," %d",&three);
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}
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if(three != 3)
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{
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fprintf(stderr,"Error: only Dimension 3 supported not %d\n",three);
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fclose(mesh_file);
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return false;
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}
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// eat comments
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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sscanf(line," %s",str);
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// check that fifth word is Vertices
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if(0!=strcmp(str,"Vertices"))
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{
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fprintf(stderr,"Error: fifth word should be Vertices not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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//fgets(line,LINE_MAX,mesh_file);
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int number_of_vertices;
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if(1 != fscanf(mesh_file," %d",&number_of_vertices) || number_of_vertices > 1000000000)
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{
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fprintf(stderr,"Error: expecting number of vertices less than 10^9...\n");
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fclose(mesh_file);
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return false;
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}
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// allocate space for vertices
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V.resize(number_of_vertices,vector<Scalar>(3,0));
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int extra;
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for(int i = 0;i<number_of_vertices;i++)
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{
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double x,y,z;
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if(4 != fscanf(mesh_file," %lg %lg %lg %d",&x,&y,&z,&extra))
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{
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fprintf(stderr,"Error: expecting vertex position...\n");
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fclose(mesh_file);
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return false;
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}
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V[i][0] = x;
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V[i][1] = y;
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V[i][2] = z;
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}
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// eat comments
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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sscanf(line," %s",str);
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// check that sixth word is Triangles
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if(0!=strcmp(str,"Triangles"))
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{
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fprintf(stderr,"Error: sixth word should be Triangles not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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int number_of_triangles;
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if(1 != fscanf(mesh_file," %d",&number_of_triangles))
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{
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fprintf(stderr,"Error: expecting number of triangles...\n");
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fclose(mesh_file);
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return false;
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}
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// allocate space for triangles
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F.resize(number_of_triangles,vector<Index>(3));
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// triangle indices
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int tri[3];
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for(int i = 0;i<number_of_triangles;i++)
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{
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if(4 != fscanf(mesh_file," %d %d %d %d",&tri[0],&tri[1],&tri[2],&extra))
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{
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printf("Error: expecting triangle indices...\n");
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return false;
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}
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for(int j = 0;j<3;j++)
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{
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F[i][j] = tri[j]-1;
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}
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}
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// eat comments
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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sscanf(line," %s",str);
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// check that sixth word is Triangles
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if(0!=strcmp(str,"Tetrahedra"))
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{
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fprintf(stderr,"Error: seventh word should be Tetrahedra not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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int number_of_tetrahedra;
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if(1 != fscanf(mesh_file," %d",&number_of_tetrahedra))
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{
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fprintf(stderr,"Error: expecting number of tetrahedra...\n");
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fclose(mesh_file);
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return false;
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}
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// allocate space for tetrahedra
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T.resize(number_of_tetrahedra,vector<Index>(4));
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// tet indices
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int a,b,c,d;
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for(int i = 0;i<number_of_tetrahedra;i++)
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{
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if(5 != fscanf(mesh_file," %d %d %d %d %d",&a,&b,&c,&d,&extra))
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{
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fprintf(stderr,"Error: expecting tetrahedra indices...\n");
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fclose(mesh_file);
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return false;
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}
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T[i][0] = a-1;
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T[i][1] = b-1;
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T[i][2] = c-1;
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T[i][3] = d-1;
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}
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fclose(mesh_file);
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return true;
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}
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#include <Eigen/Core>
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#include "list_to_matrix.h"
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template <typename DerivedV, typename DerivedF, typename DerivedT>
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IGL_INLINE bool igl::readMESH(
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const std::string mesh_file_name,
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Eigen::PlainObjectBase<DerivedV>& V,
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Eigen::PlainObjectBase<DerivedT>& T,
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Eigen::PlainObjectBase<DerivedF>& F)
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{
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using namespace std;
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FILE * mesh_file = fopen(mesh_file_name.c_str(),"r");
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if(NULL==mesh_file)
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{
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fprintf(stderr,"IOError: %s could not be opened...",mesh_file_name.c_str());
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return false;
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}
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return readMESH(mesh_file,V,T,F);
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}
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template <typename DerivedV, typename DerivedF, typename DerivedT>
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IGL_INLINE bool igl::readMESH(
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FILE * mesh_file,
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Eigen::PlainObjectBase<DerivedV>& V,
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Eigen::PlainObjectBase<DerivedT>& T,
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Eigen::PlainObjectBase<DerivedF>& F)
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{
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using namespace std;
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#ifndef LINE_MAX
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# define LINE_MAX 2048
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#endif
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char line[LINE_MAX];
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bool still_comments;
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// eat comments at beginning of file
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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char str[LINE_MAX];
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sscanf(line," %s",str);
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// check that first word is MeshVersionFormatted
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if(0!=strcmp(str,"MeshVersionFormatted"))
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{
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fprintf(stderr,
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"Error: first word should be MeshVersionFormatted not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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int one = -1;
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if(2 != sscanf(line,"%s %d",str,&one))
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{
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// 1 appears on next line?
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fscanf(mesh_file," %d",&one);
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}
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if(one != 1)
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{
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fprintf(stderr,"Error: second word should be 1 not %d\n",one);
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fclose(mesh_file);
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return false;
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}
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// eat comments
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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sscanf(line," %s",str);
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// check that third word is Dimension
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if(0!=strcmp(str,"Dimension"))
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{
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fprintf(stderr,"Error: third word should be Dimension not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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int three = -1;
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if(2 != sscanf(line,"%s %d",str,&three))
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{
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// 1 appears on next line?
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fscanf(mesh_file," %d",&three);
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}
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if(three != 3)
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{
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fprintf(stderr,"Error: only Dimension 3 supported not %d\n",three);
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fclose(mesh_file);
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return false;
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}
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// eat comments
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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}
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sscanf(line," %s",str);
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// check that fifth word is Vertices
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if(0!=strcmp(str,"Vertices"))
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{
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fprintf(stderr,"Error: fifth word should be Vertices not %s\n",str);
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fclose(mesh_file);
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return false;
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}
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//fgets(line,LINE_MAX,mesh_file);
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int number_of_vertices;
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if(1 != fscanf(mesh_file," %d",&number_of_vertices) || number_of_vertices > 1000000000)
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{
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fprintf(stderr,"Error: expecting number of vertices less than 10^9...\n");
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fclose(mesh_file);
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return false;
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}
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// allocate space for vertices
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V.resize(number_of_vertices,3);
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int extra;
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for(int i = 0;i<number_of_vertices;i++)
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{
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double x,y,z;
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if(4 != fscanf(mesh_file," %lg %lg %lg %d",&x,&y,&z,&extra))
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{
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fprintf(stderr,"Error: expecting vertex position...\n");
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fclose(mesh_file);
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return false;
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}
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V(i,0) = x;
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V(i,1) = y;
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V(i,2) = z;
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}
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// eat comments
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still_comments= true;
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while(still_comments)
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{
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fgets(line,LINE_MAX,mesh_file);
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still_comments = (line[0] == '#' || line[0] == '\n');
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|
|
}
|
||
|
|
|
||
|
|
sscanf(line," %s",str);
|
||
|
|
// check that sixth word is Triangles
|
||
|
|
if(0!=strcmp(str,"Triangles"))
|
||
|
|
{
|
||
|
|
fprintf(stderr,"Error: sixth word should be Triangles not %s\n",str);
|
||
|
|
fclose(mesh_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
int number_of_triangles;
|
||
|
|
if(1 != fscanf(mesh_file," %d",&number_of_triangles))
|
||
|
|
{
|
||
|
|
fprintf(stderr,"Error: expecting number of triangles...\n");
|
||
|
|
fclose(mesh_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// allocate space for triangles
|
||
|
|
F.resize(number_of_triangles,3);
|
||
|
|
// triangle indices
|
||
|
|
int tri[3];
|
||
|
|
for(int i = 0;i<number_of_triangles;i++)
|
||
|
|
{
|
||
|
|
if(4 != fscanf(mesh_file," %d %d %d %d",&tri[0],&tri[1],&tri[2],&extra))
|
||
|
|
{
|
||
|
|
printf("Error: expecting triangle indices...\n");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
for(int j = 0;j<3;j++)
|
||
|
|
{
|
||
|
|
F(i,j) = tri[j]-1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// eat comments
|
||
|
|
still_comments= true;
|
||
|
|
while(still_comments)
|
||
|
|
{
|
||
|
|
fgets(line,LINE_MAX,mesh_file);
|
||
|
|
still_comments = (line[0] == '#' || line[0] == '\n');
|
||
|
|
}
|
||
|
|
|
||
|
|
sscanf(line," %s",str);
|
||
|
|
// check that sixth word is Triangles
|
||
|
|
if(0!=strcmp(str,"Tetrahedra"))
|
||
|
|
{
|
||
|
|
fprintf(stderr,"Error: seventh word should be Tetrahedra not %s\n",str);
|
||
|
|
fclose(mesh_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
int number_of_tetrahedra;
|
||
|
|
if(1 != fscanf(mesh_file," %d",&number_of_tetrahedra))
|
||
|
|
{
|
||
|
|
fprintf(stderr,"Error: expecting number of tetrahedra...\n");
|
||
|
|
fclose(mesh_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// allocate space for tetrahedra
|
||
|
|
T.resize(number_of_tetrahedra,4);
|
||
|
|
// tet indices
|
||
|
|
int a,b,c,d;
|
||
|
|
for(int i = 0;i<number_of_tetrahedra;i++)
|
||
|
|
{
|
||
|
|
if(5 != fscanf(mesh_file," %d %d %d %d %d",&a,&b,&c,&d,&extra))
|
||
|
|
{
|
||
|
|
fprintf(stderr,"Error: expecting tetrahedra indices...\n");
|
||
|
|
fclose(mesh_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
T(i,0) = a-1;
|
||
|
|
T(i,1) = b-1;
|
||
|
|
T(i,2) = c-1;
|
||
|
|
T(i,3) = d-1;
|
||
|
|
}
|
||
|
|
fclose(mesh_file);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
//{
|
||
|
|
// std::vector<std::vector<double> > vV,vT,vF;
|
||
|
|
// bool success = igl::readMESH(mesh_file_name,vV,vT,vF);
|
||
|
|
// if(!success)
|
||
|
|
// {
|
||
|
|
// // readMESH already printed error message to std err
|
||
|
|
// return false;
|
||
|
|
// }
|
||
|
|
// bool V_rect = igl::list_to_matrix(vV,V);
|
||
|
|
// if(!V_rect)
|
||
|
|
// {
|
||
|
|
// // igl::list_to_matrix(vV,V) already printed error message to std err
|
||
|
|
// return false;
|
||
|
|
// }
|
||
|
|
// bool T_rect = igl::list_to_matrix(vT,T);
|
||
|
|
// if(!T_rect)
|
||
|
|
// {
|
||
|
|
// // igl::list_to_matrix(vT,T) already printed error message to std err
|
||
|
|
// return false;
|
||
|
|
// }
|
||
|
|
// bool F_rect = igl::list_to_matrix(vF,F);
|
||
|
|
// if(!F_rect)
|
||
|
|
// {
|
||
|
|
// // igl::list_to_matrix(vF,F) already printed error message to std err
|
||
|
|
// return false;
|
||
|
|
// }
|
||
|
|
// assert(V.cols() == 3);
|
||
|
|
// assert(T.cols() == 4);
|
||
|
|
// assert(F.cols() == 3);
|
||
|
|
// return true;
|
||
|
|
//}
|
||
|
|
|
||
|
|
#ifdef IGL_STATIC_LIBRARY
|
||
|
|
// Explicit template instantiation
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<float, -1, 3, 0, -1, 3>, Eigen::Matrix<int, -1, 3, 0, -1, 3>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(FILE*, Eigen::PlainObjectBase<Eigen::Matrix<float, -1, 3, 0, -1, 3> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 0, -1, 3> >&);
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<float, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(FILE*, Eigen::PlainObjectBase<Eigen::Matrix<float, -1, 3, 1, -1, 3> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 1, -1, 3> >&);
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<double, -1, -1, 1, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 1, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<float, -1, 3, 1, -1, 3>, Eigen::Matrix<unsigned int, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<float, -1, 3, 1, -1, 3> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<unsigned int, -1, 3, 1, -1, 3> >&);
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<double, -1, 3, 0, -1, 3>, Eigen::Matrix<int, -1, 3, 0, -1, 3>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 0, -1, 3> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 0, -1, 3> >&);
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
|
||
|
|
template bool igl::readMESH<double, int>(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >&);
|
||
|
|
template bool igl::readMESH<Eigen::Matrix<double, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 1, -1, 3> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 1, -1, 3> >&);
|
||
|
|
#endif
|