340 lines
14 KiB
C
340 lines
14 KiB
C
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// Copyright (c) 2017 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/PLY_reader.h $
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// $Id: PLY_reader.h 0779373 2020-03-26T13:31:46+01:00 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) : Simon Giraudot
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#ifndef CGAL_IO_PLY_READER_H
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#define CGAL_IO_PLY_READER_H
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#include <CGAL/IO/PLY.h>
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namespace CGAL{
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namespace internal
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{
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template <typename Integer, class Polygon_3, class Color_rgb>
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bool
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read_PLY_faces (std::istream& in,
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internal::PLY::PLY_element& element,
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std::vector< Polygon_3 >& polygons,
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std::vector< Color_rgb >& fcolors,
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const char* vertex_indices_tag)
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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<std::vector<Integer>, boost::uint8_t, boost::uint8_t, boost::uint8_t> new_face;
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if (has_colors)
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{
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PLY::process_properties (element, new_face,
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std::make_pair (CGAL::make_nth_of_tuple_property_map<0>(new_face),
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PLY_property<std::vector<Integer> >(vertex_indices_tag)),
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std::make_pair (CGAL::make_nth_of_tuple_property_map<1>(new_face),
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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_face),
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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_face),
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PLY_property<boost::uint8_t>(btag.c_str())));
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fcolors.push_back (Color_rgb (get<1>(new_face), get<2>(new_face), get<3>(new_face)));
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}
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else
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PLY::process_properties (element, new_face,
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std::make_pair (CGAL::make_nth_of_tuple_property_map<0>(new_face),
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PLY_property<std::vector<Integer> >(vertex_indices_tag)));
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polygons.push_back (Polygon_3(get<0>(new_face).size()));
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for (std::size_t i = 0; i < get<0>(new_face).size(); ++ i)
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polygons.back()[i] = std::size_t(get<0>(new_face)[i]);
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}
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return true;
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}
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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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template <class Point_3, class Polygon_3, class Color_rgb>
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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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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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std::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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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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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
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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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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,
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dummy_pui,
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fcolors, vcolors,
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dummy_pf);
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}
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} // namespace CGAL
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#endif // CGAL_IO_PLY_READER_H
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