80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
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// Copyright (c) 1997 ETH Zurich (Switzerland).
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// 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: https://github.com/CGAL/cgal/blob/v5.1/Polyhedron_IO/include/CGAL/IO/generic_print_polyhedron.h $
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// $Id: generic_print_polyhedron.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Lutz Kettner <kettner@mpi-sb.mpg.de>
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#ifndef CGAL_IO_GENERIC_PRINT_POLYHEDRON_H
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#define CGAL_IO_GENERIC_PRINT_POLYHEDRON_H 1
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#include <CGAL/license/Polyhedron.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 <CGAL/property_map.h>
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#include <boost/graph/graph_traits.hpp>
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#include <CGAL/basic.h>
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#include <CGAL/Inverse_index.h>
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#include <iostream>
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namespace CGAL {
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template <class Polyhedron, class Writer, class Vpm>
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void
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generic_print_polyhedron( std::ostream& out,
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const Polyhedron& P,
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Writer& writer,
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const Vpm& vpm ) {
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// writes P to `out' in the format provided by `writer'.
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typedef typename Polyhedron::Vertex_const_iterator VCI;
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typedef typename Polyhedron::Facet_const_iterator FCI;
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typedef typename Polyhedron::Halfedge_around_facet_const_circulator HFCC;
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// Print header.
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writer.write_header( out,
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P.size_of_vertices(),
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P.size_of_halfedges(),
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P.size_of_facets());
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for(typename boost::graph_traits<Polyhedron>::vertex_descriptor vi : vertices(P)) {
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writer.write_vertex( ::CGAL::to_double( get(vpm, vi).x()),
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::CGAL::to_double( get(vpm, vi).y()),
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::CGAL::to_double( get(vpm, vi).z()));
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}
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typedef Inverse_index< VCI> Index;
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Index index( P.vertices_begin(), P.vertices_end());
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writer.write_facet_header();
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for( FCI fi = P.facets_begin(); fi != P.facets_end(); ++fi) {
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HFCC hc = fi->facet_begin();
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HFCC hc_end = hc;
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std::size_t n = circulator_size( hc);
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CGAL_assertion( n >= 3);
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writer.write_facet_begin( n);
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do {
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writer.write_facet_vertex_index( index[ VCI(hc->vertex())]);
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++hc;
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} while( hc != hc_end);
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writer.write_facet_end();
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}
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writer.write_footer();
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}
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template <class Polyhedron, class Writer>
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void
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generic_print_polyhedron( std::ostream& out,
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const Polyhedron& P,
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Writer& writer)
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{
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generic_print_polyhedron(out, P, writer,
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get(CGAL::vertex_point, P));
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}
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} //namespace CGAL
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#endif // CGAL_IO_GENERIC_PRINT_POLYHEDRON_H //
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// EOF //
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