Method read

src/3D/Model.cpp:100–169

}

bool OBJModel::read(const std::string& fileName) {
  faces.clear();
  vertList.clear();
  normList.clear();
  uvList.clear();

  std::ifstream ifs(fileName.c_str(), std::ios::in);
  std::string line;
  while (ifs.good() && !ifs.eof()) {
    std::getline(ifs, line);
    if (line.size()) {
      // parse it
      switch (line[0]) {
        case 'v':
          if (line.size() > 5) { // there have to be enough characters for a full vert
            OBJVert v;

            switch (line[1]) {
              case 'n':
                v.read3(line.c_str() + 2);
                normList.push_back(v);
                break;

              case 't':
                v.read2(line.c_str() + 2);
                uvList.push_back(v);
                break;

              default:
                v.read3(line.c_str() + 1);
                vertList.push_back(v);
                break;
            }
          }
          break;

        case 'f': {
          std::vector<std::string> verts = TextUtils::tokenize(std::string(line.c_str() + 2), std::string(" "));
          OBJFace face;
          for (size_t v = 0; v < verts.size(); v++) {
            std::vector<std::string> indexes = TextUtils::tokenize(verts[v], std::string("/"));
            if (indexes.size()) {
              face.verts.push_back(atoi(indexes[0].c_str()) - 1);

              if (indexes.size() > 1 && indexes[1].size()) {
                face.uvs.push_back(atoi(indexes[1].c_str()) - 1);
              }
              else {
                face.uvs.push_back(0);
              }

              if (indexes.size() > 2 && indexes[2].size()) {
                face.norms.push_back(atoi(indexes[2].c_str()) - 1);
              }
              else {
                face.norms.push_back(0);
              }
            }