298 lines
8.3 KiB
C++
298 lines
8.3 KiB
C++
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#include <iostream>
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#include <iterator>
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// -------------------- OpenMesh
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#include <OpenMesh/Core/IO/MeshIO.hh>
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#include <OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh>
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#include <OpenMesh/Tools/Utils/getopt.h>
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// ----------------------------------------------------------------------------
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using namespace OpenMesh;
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// ----------------------------------------------------------------------------
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typedef TriMesh_ArrayKernelT<> MyMesh;
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// ----------------------------------------------------------------------------
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#define CHKROPT( Option ) \
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std::cout << " provides " << #Option \
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<< (ropt.check(IO::Options:: Option)?": yes\n":": no\n")
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#define CHKWOPT( Option ) \
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std::cout << " write " << #Option \
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<< (wopt.check(IO::Options:: Option)?": yes\n":": no\n")
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#define MESHOPT( msg, tf ) \
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std::cout << " " << msg << ": " << ((tf)?"yes\n":"no\n")
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// ----------------------------------------------------------------------------
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void parse_commandline( int _argc, char **_argv, MyMesh& _mesh,
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IO::Options &ropt, IO::Options &wopt );
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void usage_and_exit(int xcode);
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// ----------------------------------------------------------------------------
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int main(int argc, char **argv)
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{
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MyMesh mesh;
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IO::Options ropt, wopt;
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// -------------------- evaluate commandline
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parse_commandline( argc, argv, mesh, ropt, wopt );
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// -------------------- read mesh
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if ( ! IO::read_mesh(mesh,argv[optind], ropt))
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{
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std::cerr << "Error loading mesh from file " << argv[optind] << std::endl;
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return 1;
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}
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// -------------------- show options
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std::cout << "File " << argv[optind] << std::endl;
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std::cout << " is binary: "
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<< (ropt.check(IO::Options::Binary) ? " yes\n" : " no\n");
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std::cout << " byte order: ";
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if (ropt.check(IO::Options::Swap))
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std::cout << "swapped\n";
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else if (ropt.check(IO::Options::LSB))
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std::cout << "little endian\n";
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else if (ropt.check(IO::Options::MSB))
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std::cout << "big endian\n";
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else
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std::cout << "don't care\n";
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std::cout << " provides VertexNormal"
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<< ( // strange layout for doxygen
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ropt.check(IO::Options::VertexNormal)
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? ": yes\n":": no\n");
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CHKROPT( VertexColor );
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CHKROPT( VertexTexCoord );
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CHKROPT( FaceNormal );
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CHKROPT( FaceColor );
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// -------------------- mesh stats
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std::cout << "# Vertices: " << mesh.n_vertices() << std::endl;
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std::cout << "# Edges : " << mesh.n_faces() << std::endl;
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std::cout << "# Faces : " << mesh.n_faces() << std::endl;
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// -------------------- show write options
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std::cout << "Selected write options:\n";
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std::cout << " use binary: "
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<< (wopt.check(IO::Options::Binary) ? " yes\n" : " no\n");
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std::cout << " byte order: ";
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if (wopt.check(IO::Options::Swap))
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std::cout << "swapped\n";
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else if (wopt.check(IO::Options::LSB))
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std::cout << "little endian\n";
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else if (wopt.check(IO::Options::MSB))
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std::cout << "big endian\n";
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else
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std::cout << "don't care\n";
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std::cout << " write VertexNormal"
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<< (wopt.check(IO::Options::VertexNormal) ? ": yes\n":": no\n");
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CHKWOPT( VertexColor );
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CHKWOPT( VertexTexCoord );
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CHKWOPT( FaceNormal );
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CHKWOPT( FaceColor );
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// -------------------- show mesh capabilities
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std::cout << "Mesh supports\n";
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MESHOPT("vertex normals", mesh.has_vertex_normals());
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MESHOPT("vertex colors", mesh.has_vertex_colors());
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MESHOPT("texcoords", mesh.has_vertex_texcoords2D());
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MESHOPT("face normals", mesh.has_face_normals());
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MESHOPT("face colors", mesh.has_face_colors());
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// -------------------- write mesh
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std::cout << "Write mesh to " << argv[optind+1] << "..";
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if ( !IO::write_mesh( mesh, argv[optind+1], wopt ) )
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{
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std::cerr << "Error" << std::endl;
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std::cerr << "Possible reasons:\n";
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std::cerr << "1. Chosen format cannot handle an option!\n";
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std::cerr << "2. Mesh does not provide necessary information!\n";
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std::cerr << "3. Or simply cannot open file for writing!\n";
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return 1;
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}
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else
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std::cout << "Ok.\n";
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return 0;
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}
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// ----------------------------------------------------------------------------
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void parse_commandline( int _argc, char **_argv, MyMesh& _mesh,
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IO::Options &ropt, IO::Options &wopt )
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{
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int c;
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while ((c=getopt(_argc, _argv, "bhsBF:LMSV:X:"))!=-1)
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{
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switch(c)
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{
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// -------------------- read options
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// force binary input
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case 'b':
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ropt += IO::Options::Binary;
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break;
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// force swapping the byte order, when reading a binary file
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case 's':
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ropt += IO::Options::Swap;
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break;
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// -------------------- write options
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// Write binary variant of format if possible
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case 'B':
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wopt += IO::Options::Binary;
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break;
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//
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case 'F':
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for(size_t i=0; optarg[i]; ++i)
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switch(optarg[i]) {
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case 'n' : wopt += IO::Options::FaceNormal; break;
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case 'c' : wopt += IO::Options::FaceColor; break;
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}
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break;
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// Use little endian when writing binary data
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case 'L':
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wopt += IO::Options::LSB;
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break;
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// Use big endian when writing binary data
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case 'M':
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wopt += IO::Options::MSB;
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break;
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// Swap byte order when writing binary data
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case 'S':
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wopt += IO::Options::Swap;
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break;
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//
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case 'V':
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{
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for(size_t i=0; optarg[i]; ++i)
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switch(optarg[i]) {
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case 'n' : // dont't change layout!!
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wopt += IO::Options::VertexNormal;
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break;
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case 't' : wopt += IO::Options::VertexTexCoord; break;
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case 'c' : wopt += IO::Options::VertexColor; break;
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}
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break;
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}
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// -------------------- request mesh' standard properties
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case 'X':
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{
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char entity='\0';
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for(size_t i=0; optarg[i]; ++i)
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switch(optarg[i]) {
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case 'v':
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case 'f': entity = optarg[i]; break;
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case 'n':
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switch(entity) {
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case 'v': _mesh.request_vertex_normals(); break;
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case 'f': _mesh.request_face_normals(); break;
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}
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break;
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case 'c':
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switch(entity) {
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case 'v': _mesh.request_vertex_colors(); break;
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case 'f': _mesh.request_face_colors(); break;
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}
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break;
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case 't':
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switch(entity) {
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case 'v': _mesh.request_vertex_texcoords2D(); break;
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}
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break;
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}
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break;
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}
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// -------------------- help
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case 'h':
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usage_and_exit(0);
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default:
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usage_and_exit(1);
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}
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}
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if ( _argc-optind != 2)
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usage_and_exit(1);
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}
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// ----------------------------------------------------------------------------
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void usage_and_exit(int xcode)
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{
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std::ostream &os = xcode ? std::cerr : std::cout;
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os << "Usage: io_options [Options] <input> <output>\n"
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<< std::endl;
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os << " Read and write a mesh, using OpenMesh::IO::Options\n"
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<< std::endl;
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os << "Options:\n"
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<< std::endl;
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os << "a) read options\n"
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<< std::endl
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<< " -b\n"
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<< "\tAssume input file is a binary file\n"
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<< std::endl
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<< " -s\n"
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<< "\tSwap byte order when reading a binary file!\n"
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<< std::endl;
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os << "b) write options\n"
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<< std::endl
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<< " -B\n"
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<< "\tWrite binary data\n"
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<< std::endl
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<< " -S\n"
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<< "\tSwap byte order, when writing binary data\n"
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<< std::endl
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<< " -M/-L\n"
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<< "\tUse MSB/LSB byte ordering, when writing binary data\n"
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<< std::endl
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<< " -V{n|t|c}\n"
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<< "\tWrite vertex normals, texcoords, and/or colors\n"
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<< std::endl
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<< " -F{n|c}\n"
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<< "\tWrite face normals, and/or colors\n"
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<< std::endl;
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os << "c) Mesh properties\n"
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<< std::endl
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<< " -Xv{n|c|t}\n"
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<< "\tRequest vertex property normals|colors|texcoords\n"
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<< std::endl
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<< " -Xf{n|c}\n"
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<< "\tRequest face property normals|colors\n"
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<< std::endl;
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exit(xcode);
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}
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// end of file
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// ============================================================================
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