65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
// Copyright (c) 2016 GeometryFactory
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//
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// This file is part of CGAL (www.cgal.org)
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Polyhedron_IO/include/CGAL/IO/OBJ_reader.h $
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// $Id: OBJ_reader.h 52164b1 2019-10-19T15:34:59+02:00 Sébastien Loriot
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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// Author(s) : Andreas Fabri and Maxime Gimeno
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#ifndef CGAL_IO_OBJ_READER_H
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#define CGAL_IO_OBJ_READER_H
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#include <istream>
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#include <sstream>
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#include <vector>
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namespace CGAL {
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template <class Point_3>
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bool
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read_OBJ( std::istream& input,
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std::vector<Point_3> &points,
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std::vector<std::vector<std::size_t> > &faces)
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{
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Point_3 p;
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std::string line;
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while(getline(input, line)) {
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if(line[0] == 'v' && line[1] == ' ') {
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std::istringstream iss(line.substr(1));
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iss >> p;
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if(!iss)
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return false;
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points.push_back(p);
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}
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else if(line[0] == 'f') {
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std::istringstream iss(line.substr(1));
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int i;
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faces.push_back( std::vector<std::size_t>() );
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while(iss >> i)
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{
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if(i < 1)
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{
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faces.back().push_back(points.size()+i);//negative indices are relative references
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}
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else {
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faces.back().push_back(i-1);
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}
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iss.ignore(256, ' ');
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}
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}
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else
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{
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//std::cerr<<"ERROR : Cannnot read line beginning with "<<line[0]<<std::endl;
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continue;
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}
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}
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return true;
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}
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} // namespace CGAL
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#endif // CGAL_IO_OBJ_READER_H
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