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@@ -33,6 +33,47 @@ IGL_INLINE bool igl::writeOFF(
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return true;
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}
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+// write mesh and colors-by-vertex to an ascii off file
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+template <typename DerivedV, typename DerivedF, typename DerivedC>
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+IGL_INLINE bool igl::writeOFF(
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+ const std::string fname,
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+ const Eigen::PlainObjectBase<DerivedV>& V,
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+ const Eigen::PlainObjectBase<DerivedF>& F,
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+ const Eigen::PlainObjectBase<DerivedC>& C)
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+{
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+ using namespace std;
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+ using namespace Eigen;
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+ assert(V.cols() == 3 && "V should have 3 columns");
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+ assert(C.cols() == 3 && "C should have 3 columns");
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+
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+ if(V.rows() != C.rows())
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+ {
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+ fprintf(stderr,"IOError: writeOFF() Only color per vertex supported. V and C should have same size.\n");
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+ return false;
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+ }
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+
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+ ofstream s(fname);
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+ if(!s.is_open())
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+ {
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+ fprintf(stderr,"IOError: writeOFF() could not open %s\n",fname.c_str());
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+ return false;
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+ }
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+
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+ //Check if RGB values are in the range [0..1] or [0..255]
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+ int rgbScale = (C.maxCoeff() <= 1.0)?255:1;
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+ Eigen::MatrixXd RGB = rgbScale * C;
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+
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+ s<< "COFF\n"<<V.rows()<<" "<<F.rows()<<" 0\n";
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+ for (unsigned i=0; i< V.rows(); i++)
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+ {
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+ s <<V.row(i).format(IOFormat(FullPrecision,DontAlignCols," "," ","","",""," "));
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+ s << unsigned(RGB(i,0)) << " " << unsigned(RGB(i,1)) << " " << unsigned(RGB(i,2)) << " 255\n";
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+ }
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+
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+ s<<(F.array()).format(IOFormat(FullPrecision,DontAlignCols," ","\n","3 ","","","\n"));
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+ return true;
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+}
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+
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template specialization
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// generated by autoexplicit.sh
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@@ -44,4 +85,6 @@ template bool igl::writeOFF<Eigen::Matrix<float, -1, 3, 1, -1, 3>, Eigen::Matrix
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template bool igl::writeOFF<Eigen::Matrix<double, -1, 3, 0, -1, 3>, Eigen::Matrix<int, -1, 3, 0, -1, 3> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 0, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 0, -1, 3> > const&);
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template bool igl::writeOFF<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 3, 0, -1, 3> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 0, -1, 3> > const&);
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template bool igl::writeOFF<Eigen::Matrix<double, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, 3, 1, -1, 3> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 1, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 1, -1, 3> > const&);
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+template bool igl::writeOFF<Eigen::Matrix<double, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, 3, 1, -1, 3>, Eigen::Matrix<double, -1, 3, 1, -1, 3> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 1, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 1, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 1, -1, 3> > const&);
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+template bool igl::writeOFF<Eigen::Matrix<double, -1, 3, 1, -1, 3>, Eigen::Matrix<unsigned int, -1, 3, 1, -1, 3>, Eigen::Matrix<double, -1, 3, 1, -1, 3> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 1, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<unsigned int, -1, 3, 1, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 1, -1, 3> > const&);
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#endif
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jmespadero