mirror of https://github.com/CGAL/cgal
434 lines
17 KiB
C++
434 lines
17 KiB
C++
// Copyright (c) 2015 Geometry Factory
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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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// $URL$
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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) : Simon Giraudot
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#ifndef CGAL_IO_PLY_H
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#define CGAL_IO_PLY_H
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#include <CGAL/IO/PLY/PLY_reader.h>
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#include <CGAL/IO/PLY/PLY_writer.h>
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#include <CGAL/property_map.h>
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namespace CGAL {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Read
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template <class Point_3, class Polygon_3, class Color_rgb>
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bool read_PLY(std::istream& in,
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std::vector<Point_3>& points,
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std::vector<Polygon_3>& polygons,
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std::vector<std::pair<unsigned int, unsigned int> >& hedges,
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std::vector<Color_rgb>& fcolors,
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std::vector<Color_rgb>& vcolors,
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std::vector<std::pair<float, float> >& huvs,
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bool /* verbose */ = false)
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{
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if(!in)
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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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internal::PLY::PLY_reader reader;
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if(!(reader.init(in)))
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{
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in.setstate(std::ios::failbit);
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return false;
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}
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for(std::size_t i = 0; i < reader.number_of_elements(); ++ i)
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{
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internal::PLY::PLY_element& element = reader.element(i);
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if(element.name() == "vertex" || element.name() == "vertices")
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{
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bool has_colors = false;
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std::string rtag = "r", gtag = "g", btag = "b";
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if((element.has_property<boost::uint8_t>("red") || element.has_property<boost::uint8_t>("r")) &&
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(element.has_property<boost::uint8_t>("green") || element.has_property<boost::uint8_t>("g")) &&
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(element.has_property<boost::uint8_t>("blue") || element.has_property<boost::uint8_t>("b")))
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{
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has_colors = true;
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if(element.has_property<boost::uint8_t>("red"))
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{
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rtag = "red"; gtag = "green"; btag = "blue";
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}
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}
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for(std::size_t j = 0; j < element.number_of_items(); ++ j)
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{
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for(std::size_t k = 0; k < element.number_of_properties(); ++ k)
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{
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internal::PLY::PLY_read_number* property = element.property(k);
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property->get(in);
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if(in.fail())
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return false;
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}
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std::tuple<Point_3, boost::uint8_t, boost::uint8_t, boost::uint8_t> new_vertex;
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if(has_colors)
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{
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internal::PLY::process_properties(element, new_vertex,
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make_ply_point_reader(CGAL::make_nth_of_tuple_property_map<0>(new_vertex)),
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std::make_pair(CGAL::make_nth_of_tuple_property_map<1>(new_vertex),
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PLY_property<boost::uint8_t>(rtag.c_str())),
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std::make_pair(CGAL::make_nth_of_tuple_property_map<2>(new_vertex),
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PLY_property<boost::uint8_t>(gtag.c_str())),
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std::make_pair(CGAL::make_nth_of_tuple_property_map<3>(new_vertex),
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PLY_property<boost::uint8_t>(btag.c_str())));
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vcolors.push_back(Color_rgb(get<1>(new_vertex), get<2>(new_vertex), get<3>(new_vertex)));
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}
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else
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internal::PLY::process_properties(element, new_vertex,
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make_ply_point_reader(CGAL::make_nth_of_tuple_property_map<0>(new_vertex)));
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points.push_back(get<0>(new_vertex));
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}
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}
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else if(element.name() == "face" || element.name() == "faces")
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{
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if(element.has_property<std::vector<boost::int32_t> >("vertex_indices"))
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internal::read_PLY_faces<boost::int32_t>(in, element, polygons, fcolors, "vertex_indices");
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else if(element.has_property<std::vector<boost::uint32_t> >("vertex_indices"))
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internal::read_PLY_faces<boost::uint32_t>(in, element, polygons, fcolors, "vertex_indices");
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else if(element.has_property<std::vector<boost::int32_t> >("vertex_index"))
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internal::read_PLY_faces<boost::int32_t>(in, element, polygons, fcolors, "vertex_index");
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else if(element.has_property<std::vector<boost::uint32_t> >("vertex_index"))
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internal::read_PLY_faces<boost::uint32_t>(in, element, polygons, fcolors, "vertex_index");
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else
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{
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std::cerr << "Error: can't find vertex indices in PLY input" << std::endl;
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return false;
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}
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}
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else if(element.name() == "halfedge" )
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{
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bool has_uv = false;
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std::string stag = "source", ttag = "target", utag = "u", vtag = "v";
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if( element.has_property<unsigned int>("source") &&
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element.has_property<unsigned int>("target") &&
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element.has_property<float>("u") &&
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element.has_property<float>("v"))
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{
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has_uv = true;
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}
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cpp11::tuple<unsigned int, unsigned int, float, float, float> new_hedge;
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for(std::size_t j = 0; j < element.number_of_items(); ++ j)
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{
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for(std::size_t k = 0; k < element.number_of_properties(); ++ k)
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{
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internal::PLY::PLY_read_number* property = element.property(k);
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property->get(in);
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if(in.eof())
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return false;
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}
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if(has_uv)
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{
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internal::PLY::process_properties(element, new_hedge,
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std::make_pair(CGAL::make_nth_of_tuple_property_map<0>(new_hedge),
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PLY_property<unsigned int>(stag.c_str())),
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std::make_pair(CGAL::make_nth_of_tuple_property_map<1>(new_hedge),
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PLY_property<unsigned int>(ttag.c_str())),
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std::make_pair(CGAL::make_nth_of_tuple_property_map<2>(new_hedge),
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PLY_property<float>(utag.c_str())),
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std::make_pair(CGAL::make_nth_of_tuple_property_map<3>(new_hedge),
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PLY_property<float>(vtag.c_str())));
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hedges.push_back(std::make_pair(get<0>(new_hedge), get<1>(new_hedge)));
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huvs.push_back(std::make_pair(get<2>(new_hedge), get<3>(new_hedge)));
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}
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else
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{
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internal::PLY::process_properties(element, new_hedge,
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std::make_pair(CGAL::make_nth_of_tuple_property_map<0>(new_hedge),
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PLY_property<unsigned int>(stag.c_str())),
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std::make_pair(CGAL::make_nth_of_tuple_property_map<1>(new_hedge),
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PLY_property<unsigned int>(ttag.c_str()))
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);
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}
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}
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}
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else // Read other elements and ignore
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{
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for(std::size_t j = 0; j < element.number_of_items(); ++ j)
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{
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for(std::size_t k = 0; k < element.number_of_properties(); ++ k)
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{
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internal::PLY::PLY_read_number* property = element.property(k);
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property->get(in);
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if(in.fail())
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return false;
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}
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}
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}
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}
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return !in.bad();
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}
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template <class Point_3, class Polygon_3, class Color_rgb>
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bool read_PLY(std::istream& in,
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std::vector< Point_3 >& points,
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std::vector< Polygon_3 >& polygons,
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std::vector<Color_rgb>& fcolors,
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std::vector<Color_rgb>& vcolors,
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bool /* verbose */ = false)
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{
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std::vector<std::pair<unsigned int, unsigned int> > dummy_pui;
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std::vector<std::pair<float, float> > dummy_pf;
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return read_PLY<Point_3, Polygon_3, Color_rgb>(in, points, polygons, dummy_pui, fcolors, vcolors, dummy_pf);
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}
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/*!
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* \ingroup IOstreamFunctions
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*
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* reads the content of `in` into `points` and `polygons`, in the PLY format.
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*
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* \see \ref IOStreamPLY
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*/
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template <class Point_3, class Polygon_3>
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bool
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read_PLY(std::istream& in,
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std::vector< Point_3 >& points,
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std::vector< Polygon_3 >& polygons,
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bool /* verbose */ = false)
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{
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if(!in)
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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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internal::PLY::PLY_reader reader;
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if(!(reader.init(in)))
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{
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in.setstate(std::ios::failbit);
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return false;
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}
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for(std::size_t i = 0; i < reader.number_of_elements(); ++ i)
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{
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internal::PLY::PLY_element& element = reader.element(i);
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if(element.name() == "vertex" || element.name() == "vertices")
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{
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for(std::size_t j = 0; j < element.number_of_items(); ++ j)
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{
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for(std::size_t k = 0; k < element.number_of_properties(); ++ k)
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{
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internal::PLY::PLY_read_number* property = element.property(k);
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property->get(in);
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if(in.fail())
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return false;
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}
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Point_3 new_vertex;
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internal::PLY::process_properties(element, new_vertex,
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make_ply_point_reader(CGAL::Identity_property_map<Point_3>()));
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points.push_back(get<0>(new_vertex));
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}
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}
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else if(element.name() == "face" || element.name() == "faces")
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{
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std::vector<CGAL::Color> dummy;
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if(element.has_property<std::vector<boost::int32_t> >("vertex_indices"))
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internal::read_PLY_faces<boost::int32_t>(in, element, polygons, dummy, "vertex_indices");
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else if(element.has_property<std::vector<boost::uint32_t> >("vertex_indices"))
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internal::read_PLY_faces<boost::uint32_t>(in, element, polygons, dummy, "vertex_indices");
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else if(element.has_property<std::vector<boost::int32_t> >("vertex_index"))
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internal::read_PLY_faces<boost::int32_t>(in, element, polygons, dummy, "vertex_index");
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else if(element.has_property<std::vector<boost::uint32_t> >("vertex_index"))
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internal::read_PLY_faces<boost::uint32_t>(in, element, polygons, dummy, "vertex_index");
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else
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{
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std::cerr << "Error: can't find vertex indices in PLY input" << std::endl;
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return false;
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}
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}
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else // Read other elements and ignore
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{
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for(std::size_t j = 0; j < element.number_of_items(); ++ j)
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{
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for(std::size_t k = 0; k < element.number_of_properties(); ++ k)
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{
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internal::PLY::PLY_read_number* property = element.property(k);
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property->get(in);
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if(in.fail())
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return false;
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}
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}
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}
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}
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return !in.bad();
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Write
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/*!
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* \ingroup IOstreamFunctions
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*
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* writes the content of `points` and `polygons` in `out`, in the OFF format.
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*
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* \see \ref IOStreamOFF
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*/
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template <class Point_3, class Polygon_3>
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bool write_PLY(std::ostream& out,
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const std::vector< Point_3 >& points,
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const std::vector< Polygon_3 >& polygons,
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bool /* verbose */ = false)
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{
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if(!out)
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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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<< "element vertex " << points.size() << std::endl;
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internal::PLY::output_property_header(out, make_ply_point_writer (CGAL::Identity_property_map<Point_3>()));
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out << "element face " << polygons.size() << std::endl;
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internal::PLY::output_property_header(out, std::make_pair(CGAL::Identity_property_map<Polygon_3>(),
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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 (std::size_t i = 0; i < points.size(); ++ i)
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internal::PLY::output_properties(out, points.begin() + i,
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make_ply_point_writer (CGAL::Identity_property_map<Point_3>()));
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for (std::size_t i = 0; i < polygons.size(); ++ i)
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internal::PLY::output_properties(out, polygons.begin() + i,
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std::make_pair(CGAL::Identity_property_map<Polygon_3>(),
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PLY_property<std::vector<int> >("vertex_indices")));
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return out.good();
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}
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template <class SurfaceMesh>
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bool write_PLY(std::ostream& out,
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const SurfaceMesh& mesh,
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bool /* verbose */ = false)
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{
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typedef typename boost::graph_traits<SurfaceMesh>::face_descriptor face_descriptor;
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typedef typename boost::graph_traits<SurfaceMesh>::halfedge_descriptor halfedge_descriptor;
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typedef typename boost::graph_traits<SurfaceMesh>::vertex_descriptor vertex_descriptor;
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typedef typename boost::property_map<SurfaceMesh, boost::vertex_point_t>::type::value_type Point_3;
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typedef typename SurfaceMesh::template Property_map<halfedge_descriptor,std::pair<float, float> > UV_map;
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UV_map h_uv;
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bool has_texture;
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boost::tie(h_uv, has_texture) = mesh.template property_map<halfedge_descriptor,std::pair<float, float> >("h:uv");
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if(!out)
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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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<< "element vertex " << num_vertices(mesh) << std::endl;
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internal::PLY::output_property_header(out,
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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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internal::PLY::output_property_header(out,
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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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if(has_texture)
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{
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out << "element halfedge " << num_halfedges(mesh) << std::endl;
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internal::PLY::output_property_header(out,
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std::make_pair(CGAL::Identity_property_map<std::size_t >(),
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PLY_property<unsigned int >("source")));
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internal::PLY::output_property_header(out,
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std::make_pair(CGAL::Identity_property_map<std::size_t >(),
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PLY_property<unsigned int >("target")));
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internal::PLY::output_property_header(out,
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std::make_tuple (h_uv,
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PLY_property<float>("u"),
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PLY_property<float>("v")));
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}
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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(get(CGAL::vertex_point, mesh), vd);
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internal::PLY::output_properties(out, &p,
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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(get(boost::vertex_index, mesh), target(hd,mesh)));
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internal::PLY::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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if(has_texture)
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{
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for(halfedge_descriptor hd : halfedges(mesh))
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{
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typedef std::tuple<unsigned int, unsigned int, float, float> Super_tuple;
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Super_tuple t = std::make_tuple(source(hd, mesh),target(hd, mesh),
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h_uv[hd].first,
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h_uv[hd].second);
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internal::PLY::output_properties(out, &t,
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std::make_pair(Nth_of_tuple_property_map<0,Super_tuple>(),
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PLY_property<unsigned int >("source")),
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std::make_pair(Nth_of_tuple_property_map<1,Super_tuple>(),
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PLY_property<unsigned int >("target")),
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std::make_pair(Nth_of_tuple_property_map<2,Super_tuple>(),
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PLY_property<float>("u")),
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std::make_pair(Nth_of_tuple_property_map<3,Super_tuple>(),
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PLY_property<float>("v")));
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}
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}
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return out.good();
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}
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} // namespace CGAL
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#endif // CGAL_IO_PLY_H
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