mirror of https://github.com/CGAL/cgal
118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
// Copyright (c) 2015 GeometryFactory (France). All rights reserved.
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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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// $URL$
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// $Id$
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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
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// Mael Rouxel-Labbé
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#ifndef CGAL_BGL_IO_3MF_H
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#define CGAL_BGL_IO_3MF_H
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#include <CGAL/IO/3MF.h>
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#include <CGAL/IO/helpers.h>
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#include <CGAL/boost/graph/iterator.h>
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#include <boost/property_map/property_map.hpp>
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#include <boost/utility/enable_if.hpp>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#if defined(CGAL_LINKED_WITH_3MF) || defined(DOXYGEN_RUNNING)
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namespace CGAL {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Write
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/*!
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* \ingroup PkgBGLIoFuncs3MF
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*
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* \brief writes the triangle meshes contained in `gs` into the 3mf file `filename`.
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*
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* \tparam GraphRange a model of the concepts `RandomAccessContainer`
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* and `BackInsertionSequence` whose `value type` is
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* a model of the concepts `FaceGraph` and `HalfedgeListGraph`
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* that has only triangle faces.
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*
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* \param filename the name of the 3mf file to write.
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* \param gs a container of triangle meshes to write. An internal property map for `CGAL::vertex_point_t`
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* must be available for each mesh.
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* \param names a range of `std::string` associating a name to each mesh to be written out, which
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* will appear in the output.
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*
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* \return `true` if the writing is successful, `false` otherwise.
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*
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* \sa `read_3MF()`
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*/
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template<typename GraphRange>
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bool write_3MF(const std::string& filename,
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const GraphRange& gs,
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const std::vector<std::string>& names
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#ifndef DOXYGEN_RUNNING
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, typename boost::disable_if<
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IO::internal::is_Point_set_or_Range_or_Iterator<
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typename boost::range_value<GraphRange>::type> >::type* = nullptr
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#endif
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)
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{
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typedef typename boost::range_value<GraphRange>::type FaceGraph;
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typedef typename boost::property_map<FaceGraph, boost::vertex_point_t>::type VPM;
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typedef typename boost::property_traits<VPM>::value_type Point;
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typedef typename boost::graph_traits<FaceGraph>::vertex_descriptor vertex_descriptor;
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typedef typename boost::graph_traits<FaceGraph>::face_descriptor face_descriptor;
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typedef std::vector<std::size_t> Polygon;
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typedef std::vector<Polygon> PolygonRange;
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typedef std::vector<Point> PointRange;
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std::vector<PointRange> all_points;
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std::vector<PolygonRange> all_polygons;
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for(const FaceGraph& g : gs)
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{
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PointRange points;
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points.reserve(num_vertices(g));
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PolygonRange triangles;
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triangles.reserve(num_faces(g));
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VPM vpm = get(boost::vertex_point, g);
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std::unordered_map<typename boost::graph_traits<FaceGraph>::vertex_descriptor, std::size_t> vertex_id_map;
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std::size_t i = 0;
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for(const vertex_descriptor v : vertices(g))
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{
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points.push_back(get(vpm, v));
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vertex_id_map[v] = i++;
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}
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all_points.push_back(points);
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for(const face_descriptor f : faces(g))
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{
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Polygon triangle;
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for(vertex_descriptor vert : CGAL::vertices_around_face(halfedge(f, g), g))
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triangle.push_back(vertex_id_map[vert]);
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triangles.push_back(triangle);
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}
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all_polygons.push_back(triangles);
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}
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return write_3MF(filename, all_points, all_polygons, names);
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}
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} // namespace CGAL
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#endif // defined(CGAL_LINKED_WITH_3MF) || defined(DOXYGEN_RUNNING)
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#endif // CGAL_BGL_IO_3MF_H
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