mirror of https://github.com/CGAL/cgal
139 lines
4.7 KiB
C++
139 lines
4.7 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_PLY_H
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#define CGAL_BGL_IO_PLY_H
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#include <CGAL/IO/PLY.h>
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#include <CGAL/boost/graph/Named_function_parameters.h>
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#include <CGAL/boost/graph/named_params_helper.h>
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#include <fstream>
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namespace CGAL {
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/*!
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Inserts the mesh in an output stream in PLY format.
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If provided, the `comments` string is included line by line in
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the header of the PLY stream (each line will be precedeed by
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"comment ").
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The `np` is an optional sequence of \ref pmp_namedparameters "Named Parameters" among the ones listed below
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\cgalNamedParamsBegin
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\cgalParamBegin{vertex_point_map}
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the property map with the points associated to the vertices of `mesh` .
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If this parameter is omitted, an internal property map for
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`CGAL::vertex_point_t` should be available in `FaceGraph`
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\cgalParamEnd
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\cgalParamBegin{vertex_index_map}
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is a property map containing for each vertex of `mesh` a unique index between `0` and `num_vertices(mesh)-1`.
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\cgalParamEnd
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\cgalNamedParamsEnd
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*/
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template <class FaceGraph, class NamedParameters>
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bool write_PLY(std::ostream& out,
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const FaceGraph& mesh,
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const std::string& comments,
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const NamedParameters& np
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)
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{
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typedef typename boost::graph_traits<FaceGraph>::vertex_descriptor vertex_descriptor;
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typedef typename boost::graph_traits<FaceGraph>::halfedge_descriptor halfedge_descriptor;
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typedef typename boost::graph_traits<FaceGraph>::face_descriptor face_descriptor;
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typedef typename CGAL::GetInitializedVertexIndexMap<FaceGraph, NamedParameters>::const_type VIMap;
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typedef typename GetVertexPointMap<FaceGraph, NamedParameters>::const_type Vpm;
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typedef typename boost::property_traits<Vpm>::value_type Point_3;
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VIMap vim = CGAL::get_initialized_vertex_index_map(mesh, np);
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Vpm vpm = parameters::choose_parameter(parameters::get_parameter(np, internal_np::vertex_point),
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get_const_property_map(boost::vertex_point, mesh));
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if(!out.good())
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{
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std::cerr << "Error: cannot open file" << std::endl;
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return false;
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}
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// Write header
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out << "ply" << std::endl
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<< ((get_mode(out) == IO::BINARY) ? "format binary_little_endian 1.0" : "format ascii 1.0") << std::endl
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<< "comment Generated by the CGAL library" << std::endl;
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if(comments != std::string())
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{
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std::istringstream iss(comments);
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std::string line;
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while(getline(iss, line))
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{
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if(line != "Generated by the CGAL library") // Avoid repeating the line if multiple savings
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out << "comment " << line << std::endl;
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}
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}
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out << "element vertex " << num_vertices(mesh) << std::endl;
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IO::internal::output_property_header(out, make_ply_point_writer (CGAL::Identity_property_map<Point_3>()));
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out << "element face " << num_faces(mesh) << std::endl;
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IO::internal::output_property_header(
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out, std::make_pair(CGAL::Identity_property_map<std::vector<std::size_t> >(),
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PLY_property<std::vector<int> >("vertex_indices")));
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out << "end_header" << std::endl;
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for(vertex_descriptor vd : vertices(mesh))
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{
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Point_3 p = get(vpm, vd);
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IO::internal::output_properties(out, &p, make_ply_point_writer (CGAL::Identity_property_map<Point_3>()));
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}
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std::vector<std::size_t> polygon;
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for(face_descriptor fd : faces(mesh))
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{
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polygon.clear();
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for(halfedge_descriptor hd : halfedges_around_face(halfedge(fd, mesh), mesh))
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polygon.push_back(get(vim, target(hd,mesh)));
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IO::internal::output_properties(out, &polygon,
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std::make_pair(CGAL::Identity_property_map<std::vector<std::size_t> >(),
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PLY_property<std::vector<int> >("vertex_indices")));
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}
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return out.good();
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}
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template <class FaceGraph>
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bool write_PLY(std::ostream& out,
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const FaceGraph& mesh,
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const std::string comments)
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{
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return write_PLY(out, mesh, comments, parameters::all_default());
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}
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template <class FaceGraph, typename CGAL_BGL_NP_TEMPLATE_PARAMETERS>
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bool write_PLY(std::ostream& out,
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const FaceGraph& mesh,
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const CGAL_BGL_NP_CLASS& np)
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{
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return write_PLY(out, mesh, "", np);
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}
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template <class FaceGraph>
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bool write_PLY(std::ostream& out,
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const FaceGraph& mesh)
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{
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return write_PLY(out, mesh, "", parameters::all_default());
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}
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} // namespace CGAL
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#endif // CGAL_BGL_IO_PLY_H
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