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alecjacobson/viewmesh.cpp

Last active January 11, 2019 07:40
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Revisions

  1. alecjacobson revised this gist Dec 15, 2016. No changes.
  2. alecjacobson created this gist Dec 15, 2016.
    44 changes: 44 additions & 0 deletions viewmesh.cpp
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,44 @@
    #include <igl/guess_extension.h>
    #include <igl/read_triangle_mesh.h>
    #include <igl/viewer/Viewer.h>
    #include <Eigen/Core>
    #include <iostream>
    #include <string>
    #include <cstdio>
    #include <unistd.h>

    int main(int argc, char * argv[])
    {
    Eigen::MatrixXd V;
    Eigen::MatrixXi F;
    if(argc >= 2)
    {
    igl::read_triangle_mesh(argv[1],V,F);
    }else if(isatty(fileno(stdin)))
    {
    std::cerr<<R"(Usage:
    ./viewmesh input.obj
    ./viewmesh < input.obj
    cat input.obj | ./viewmesh
    )";
    return EXIT_FAILURE;
    }else{
    FILE * fp = tmpfile();
    while(std::cin.good())
    {
    std::vector<char> buf(1024);
    std::cin.read(&buf[0],buf.size());
    fwrite(&buf[0],sizeof(char),std::cin.gcount(),fp);
    }
    fp = freopen(NULL,"r",fp);
    std::string ext = igl::guess_extension(fp);
    std::cout<<"[treating stdin as ."<<ext<<" file]"<<std::endl;
    igl::read_triangle_mesh(ext,fp,V,F);
    }
    igl::viewer::Viewer v;
    v.data.set_mesh(V,F);
    v.launch();
    return EXIT_SUCCESS;
    }