84     std::ostream& outfile = *outfilep;  in WriteData()  local
87     outfile << "# wavefront obj file written by opencv viz module" << std::endl << std::endl;  in WriteData()
88     outfile << "mtllib NONE" << std::endl << std::endl;  in WriteData()
95 …outfile << std::setprecision(this->DecimalPrecision) << "v " << p[0] << " " << p[1] << " " << p[2]…  in WriteData()
108 …outfile << std::setprecision(this->DecimalPrecision) << "vn " << p[0] << " " << p[1] << " " << p[2…  in WriteData()
119 … outfile << std::setprecision(this->DecimalPrecision) << "vt " << p[0] << " " << p[1] << std::endl;  in WriteData()
124     outfile << std::endl << "g grp" << idStart << std::endl;  in WriteData()
125     outfile << "usemtl mtlNONE" << std::endl;  in WriteData()
134             outfile << "p ";  in WriteData()
136                 outfile << index[i] + idStart << " ";  in WriteData()
137             outfile << std::endl;  in WriteData()
148             outfile << "l ";  in WriteData()
152                     outfile << index[i] + idStart << "/" << index[i] + idStart << " ";  in WriteData()
156                     outfile << index[i] + idStart << " ";  in WriteData()
158             outfile << std::endl;  in WriteData()
169             outfile << "f ";  in WriteData()
175 …   outfile << index[i] + idStart << "/"  << index[i] + idStart << "/" << index[i] + idStart << " ";  in WriteData()
177                         outfile << index[i] + idStart << "//" << index[i] + idStart << " ";  in WriteData()
182                         outfile << index[i] + idStart << " " << index[i] + idStart << " ";  in WriteData()
184                         outfile << index[i] + idStart << " ";  in WriteData()
187             outfile << std::endl;  in WriteData()
215 …outfile << "f " << index[i1] + idStart << "/" << index[i1] + idStart << "/" << index[i1] + idStart…  in WriteData()
221 …outfile << "f " << index[i1] + idStart << "//" << index[i1] + idStart << " " << index[i2] + idStart  in WriteData()
229 … outfile << "f " << index[i1] + idStart << "/" << index[i1] + idStart << " " << index[i2] + idStart  in WriteData()
233 …outfile << "f " << index[i1] + idStart << " " << index[i2] + idStart << " " << index[i] + idStart …  in WriteData()