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// Copyright (c) 2015-2020 GeometryFactory (France). All rights reserved. // // This file is part of CGAL (www.cgal.org) // // $URL: https://github.com/CGAL/cgal/blob/v6.1/BGL/include/CGAL/boost/graph/IO/PLY.h $ // $Id: include/CGAL/boost/graph/IO/PLY.h b26b07a1242 $ // SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial // // Author(s) : Andreas Fabri // Mael Rouxel-Labbé #ifndef CGAL_BGL_IO_PLY_H #define CGAL_BGL_IO_PLY_H #include #include #include #include #include #include #include namespace CGAL { //////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////// // Read namespace IO { namespace internal { // Use CRTP to gain access to the protected members without getters/setters. template class PLY_builder : public Generic_facegraph_builder > { typedef PLY_builder Self; typedef Generic_facegraph_builder Base; typedef typename Base::Point_container Point_container; typedef typename Base::Face Face; typedef typename Base::Face_container Face_container; public: PLY_builder(std::istream& is) : Base(is) { } template bool read(std::istream& is, Point_container& points, Face_container& faces, const NamedParameters& np) { return read_PLY(is, points, faces, np); } }; template bool read_PLY_BGL(std::istream& is, Graph& g, const CGAL_NP_CLASS& np = parameters::default_values()) { typedef typename CGAL::GetVertexPointMap::type VPM; typedef typename boost::property_traits::value_type Point; internal::PLY_builder builder(is); return builder(g, np); } } // namespace internal /*! \ingroup PkgBGLIoFuncsPLY \brief reads the graph `g` from the input stream, using the \ref IOStreamPLY. The data is expected to represent a 2-manifold (possibly with borders). \attention To read a binary file, the flag `std::ios::binary` must be set during the creation of the `ifstream`. \tparam Graph a model of `MutableFaceGraph` \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters" \param is the input stream \param g the graph to be built from the input data \param np optional \ref bgl_namedparameters "Named Parameters" described below \cgalNamedParamsBegin \cgalParamNBegin{vertex_point_map} \cgalParamDescription{a property map associating points to the vertices of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `%Point_3` as value type} \cgalParamDefault{`boost::get(CGAL::vertex_point, g)`} \cgalParamExtra{If this parameter is omitted, an internal property map for `CGAL::vertex_point_t` must be available in `Graph`.} \cgalParamNEnd \cgalParamNBegin{vertex_index_map} \cgalParamDescription{a property map associating to each vertex of `graph` a unique index} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `std::size_t` as value type} \cgalParamDefault{vertex indices that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{vertex_color_map} \cgalParamDescription{a property map associating colors to the vertices of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{vertex colors that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{face_color_map} \cgalParamDescription{a property map associating colors to the faces of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%face_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{face colors that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{verbose} \cgalParamDescription{whether extra information is printed when an incident occurs during reading} \cgalParamType{Boolean} \cgalParamDefault{`false`} \cgalParamNEnd \cgalNamedParamsEnd \returns `true` if reading was successful and the resulting mesh is valid, `false` otherwise. \sa Overloads of this function for specific models of the concept `FaceGraph`. */ template bool read_PLY(std::istream& is, Graph& g, const CGAL_NP_CLASS& np = parameters::default_values() #ifndef DOXYGEN_RUNNING , std::enable_if_t::value>* = nullptr #endif ) { return internal::read_PLY_BGL(is, g, np); } /*! \ingroup PkgBGLIoFuncsPLY \brief reads the graph `g` from a file named `fname`, using the \ref IOStreamPLY. The data is expected to represent a 2-manifold (possibly with borders). \tparam Graph a model of `MutableFaceGraph` \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters" \param fname the name of the input file \param g the graph to be built from the input data \param np optional \ref bgl_namedparameters "Named Parameters" described below \cgalNamedParamsBegin \cgalParamNBegin{use_binary_mode} \cgalParamDescription{indicates whether data should be read in binary (`true`) or in \ascii (`false`)} \cgalParamType{Boolean} \cgalParamDefault{`true`} \cgalParamNEnd \cgalParamNBegin{vertex_point_map} \cgalParamDescription{a property map associating points to the vertices of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `%Point_3` as value type} \cgalParamDefault{`boost::get(CGAL::vertex_point, g)`} \cgalParamExtra{If this parameter is omitted, an internal property map for `CGAL::vertex_point_t` must be available in `Graph`.} \cgalParamNEnd \cgalParamNBegin{vertex_index_map} \cgalParamDescription{a property map associating to each vertex of `graph` a unique index} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `std::size_t` as value type} \cgalParamDefault{vertex indices that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{vertex_color_map} \cgalParamDescription{a property map associating colors to the vertices of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{vertex colors that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{face_color_map} \cgalParamDescription{a property map associating colors to the faces of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%face_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{face colors that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{verbose} \cgalParamDescription{whether extra information is printed when an incident occurs during reading} \cgalParamType{Boolean} \cgalParamDefault{`false`} \cgalParamNEnd \cgalNamedParamsEnd \returns `true` if reading was successful and the resulting mesh is valid, `false` otherwise. \sa Overloads of this function for specific models of the concept `FaceGraph`. */ template bool read_PLY(const std::string& fname, Graph& g, const CGAL_NP_CLASS& np = parameters::default_values() #ifndef DOXYGEN_RUNNING , std::enable_if_t::value>* = nullptr #endif ) { const bool binary = CGAL::parameters::choose_parameter(CGAL::parameters::get_parameter(np, internal_np::use_binary_mode), true); if(binary) { std::ifstream is(fname, std::ios::binary); CGAL::IO::set_mode(is, CGAL::IO::BINARY); return internal::read_PLY_BGL(is, g, np); } else { std::ifstream is(fname); CGAL::IO::set_mode(is, CGAL::IO::ASCII); return internal::read_PLY_BGL(is, g, np); } } //////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////// // Write /*! \ingroup PkgBGLIoFuncsPLY \brief writes the graph in an output stream, using the \ref IOStreamPLY. \attention To write to a binary file, the flag `std::ios::binary` must be set during the creation of the `ofstream`, and the \link PkgStreamSupportEnumRef `IO::Mode` \endlink of the stream must be set to `BINARY`. \tparam Graph a model of `FaceListGraph` \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters" \param os the output stream \param g the graph to be written \param comments a string included line by line in the header of the PLY stream (each line will be precedeed by "comment ") \param np optional \ref bgl_namedparameters "Named Parameters" described below \cgalNamedParamsBegin \cgalParamNBegin{vertex_point_map} \cgalParamDescription{a property map associating points to the vertices of `g`} \cgalParamType{a class model of `ReadablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `%Point_3` as value type} \cgalParamDefault{`boost::get(CGAL::vertex_point, g)`} \cgalParamExtra{If this parameter is omitted, an internal property map for `CGAL::vertex_point_t` must be available in `Graph`.} \cgalParamNEnd \cgalParamNBegin{vertex_index_map} \cgalParamDescription{a property map associating to each vertex of `graph` a unique index} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `std::size_t` as value type} \cgalParamDefault{vertex indices that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{vertex_color_map} \cgalParamDescription{a property map associating colors to the vertices of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{vertex colors that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{face_color_map} \cgalParamDescription{a property map associating colors to the faces of `g`} \cgalParamType{a class model of `WritablePropertyMap` with `boost::graph_traits::%face_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{face colors that may exist in the input will be ignored} \cgalParamNEnd \cgalParamNBegin{stream_precision} \cgalParamDescription{a parameter used to set the precision (i.e. how many digits are generated) of the output stream} \cgalParamType{int} \cgalParamDefault{the precision of the stream `os`} \cgalParamExtra{This parameter is only meaningful while using \ascii encoding.} \cgalParamNEnd \cgalNamedParamsEnd \returns `true` if writing was successful, `false` otherwise. */ template bool write_PLY(std::ostream& os, const Graph& g, const std::string& comments, const CGAL_NP_CLASS& np = parameters::default_values() #ifndef DOXYGEN_RUNNING , std::enable_if_t::value>* = nullptr #endif ) { typedef typename boost::graph_traits::vertex_descriptor vertex_descriptor; typedef typename boost::graph_traits::halfedge_descriptor halfedge_descriptor; typedef typename boost::graph_traits::face_descriptor face_descriptor; typedef typename CGAL::GetInitializedVertexIndexMap::const_type VIMap; typedef typename GetVertexPointMap::const_type Vpm; typedef typename boost::property_traits::value_type Point_3; typedef CGAL::IO::Color Color; typedef typename internal_np::Lookup_named_param_def< internal_np::vertex_color_map_t, CGAL_NP_CLASS, Constant_property_map >::type VCM; typedef typename internal_np::Lookup_named_param_def< internal_np::face_color_map_t, CGAL_NP_CLASS, Constant_property_map >::type FCM; using parameters::choose_parameter; using parameters::is_default_parameter; using parameters::get_parameter; VCM vcm = choose_parameter(get_parameter(np, internal_np::vertex_color_map), VCM()); FCM fcm = choose_parameter(get_parameter(np, internal_np::face_color_map), FCM()); bool has_vcolor = !is_default_parameter::value; bool has_fcolor = !is_default_parameter::value; VIMap vim = CGAL::get_initialized_vertex_index_map(g, np); Vpm vpm = choose_parameter(get_parameter(np, internal_np::vertex_point), get_const_property_map(boost::vertex_point, g)); if(!os.good()) return false; set_stream_precision_from_NP(os, np); // Write header os << "ply" << std::endl << ((get_mode(os) == BINARY) ? "format binary_little_endian 1.0" : "format ascii 1.0") << std::endl << "comment Generated by the CGAL library" << std::endl; if(comments != std::string()) { std::istringstream iss(comments); std::string line; while(getline(iss, line)) { if(line != "Generated by the CGAL library") // Avoid repeating the line if multiple savings os << "comment " << line << std::endl; } } os << "element vertex " << vertices(g).size() << std::endl; internal::output_property_header(os, make_ply_point_writer (CGAL::Identity_property_map())); //if vcm is not default add v:color property if(has_vcolor) { os << "property uchar red" << std::endl << "property uchar green" << std::endl << "property uchar blue" << std::endl << "property uchar alpha" << std::endl; } os << "element face " << faces(g).size() << std::endl; internal::output_property_header( os, std::make_pair(CGAL::Identity_property_map >(), PLY_property >("vertex_indices"))); //if fcm is not default add f:color property if(has_fcolor) { os << "property uchar red" << std::endl << "property uchar green" << std::endl << "property uchar blue" << std::endl << "property uchar alpha" << std::endl; } os << "end_header" << std::endl; for(vertex_descriptor vd : vertices(g)) { const Point_3& p = get(vpm, vd); internal::output_properties(os, &p, make_ply_point_writer (CGAL::Identity_property_map())); if(has_vcolor) { const CGAL::IO::Color& c = get(vcm, vd); if(get_mode(os) == CGAL::IO::ASCII) os << c << std::endl; else os.write(reinterpret_cast(&c), sizeof(c)); } } std::vector polygon; for(face_descriptor fd : faces(g)) { polygon.clear(); for(halfedge_descriptor hd : halfedges_around_face(halfedge(fd, g), g)) polygon.push_back(get(vim, target(hd,g))); internal::output_properties(os, &polygon, std::make_pair(CGAL::Identity_property_map >(), PLY_property >("vertex_indices"))); if(has_fcolor) { const CGAL::IO::Color& c = get(fcm, fd); if(get_mode(os) == CGAL::IO::ASCII) os << c << std::endl; else os.write(reinterpret_cast(&c), sizeof(c)); } } os << std::flush; // write() doesn't flush return os.good(); } /// \cond SKIP_IN_MANUAL template bool write_PLY(std::ostream& os, const Graph& g, const CGAL_NP_CLASS& np = parameters::default_values(), std::enable_if_t::value>* = nullptr) { return write_PLY(os, g, std::string(), np); } /// \endcond /*! \ingroup PkgBGLIoFuncsPLY \brief writes the graph in the output file `fname`, using the \ref IOStreamPLY. \tparam Graph a model of `FaceListGraph` \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters" \param fname the name of the output file \param g the graph to be written \param comments a string included line by line in the header of the PLY stream (each line will be precedeed by "comment ") \param np optional \ref bgl_namedparameters "Named Parameters" described below \cgalNamedParamsBegin \cgalParamNBegin{use_binary_mode} \cgalParamDescription{indicates whether data should be written in binary (`true`) or in \ascii (`false`)} \cgalParamType{Boolean} \cgalParamDefault{`true`} \cgalParamNEnd \cgalParamNBegin{vertex_point_map} \cgalParamDescription{a property map associating points to the vertices of `g`} \cgalParamType{a class model of `ReadablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `%Point_3` as value type} \cgalParamDefault{`boost::get(CGAL::vertex_point, g)`} \cgalParamExtra{If this parameter is omitted, an internal property map for `CGAL::vertex_point_t` must be available in `Graph`.} \cgalParamNEnd \cgalParamNBegin{vertex_index_map} \cgalParamDescription{a property map associating to each vertex of `graph` a unique index between `0` and `num_vertices(graph) - 1`} \cgalParamType{a class model of `ReadablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `std::size_t` as value type} \cgalParamDefault{no vertex indices in the output} \cgalParamNEnd \cgalParamNBegin{vertex_color_map} \cgalParamDescription{a property map associating colors to the vertices of `g`} \cgalParamType{a class model of `ReadablePropertyMap` with `boost::graph_traits::%vertex_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{no vertex color in the output} \cgalParamNEnd \cgalParamNBegin{face_color_map} \cgalParamDescription{a property map associating colors to the faces of `g`} \cgalParamType{a class model of `ReadablePropertyMap` with `boost::graph_traits::%face_descriptor` as key type and `CGAL::IO::Color` as value type} \cgalParamDefault{no face color in the output} \cgalParamNEnd \cgalParamNBegin{stream_precision} \cgalParamDescription{a parameter used to set the precision (i.e. how many digits are generated) of the output stream} \cgalParamType{int} \cgalParamDefault{`6`} \cgalParamExtra{This parameter is only meaningful while using \ascii encoding.} \cgalParamNEnd \cgalNamedParamsEnd \returns `true` if writing was successful, `false` otherwise. */ template bool write_PLY(const std::string& fname, const Graph& g, const std::string& comments, const CGAL_NP_CLASS& np = parameters::default_values() #ifndef DOXYGEN_RUNNING , std::enable_if_t::value>* = nullptr #endif ) { const bool binary = CGAL::parameters::choose_parameter(CGAL::parameters::get_parameter(np, internal_np::use_binary_mode), true); if(binary) { std::ofstream os(fname, std::ios::binary); CGAL::IO::set_mode(os, CGAL::IO::BINARY); return write_PLY(os, g, comments, np); } else { std::ofstream os(fname); CGAL::IO::set_mode(os, CGAL::IO::ASCII); return write_PLY(os, g, comments, np); } } /// \cond SKIP_IN_MANUAL template bool write_PLY(const std::string& fname, const Graph& g, const CGAL_NP_CLASS& np = parameters::default_values(), std::enable_if_t::value>* = nullptr) { return write_PLY(fname, g, std::string(), np); } /// \endcond } } // namespace CGAL::IO #endif // CGAL_BGL_IO_PLY_H