mirror of https://github.com/CGAL/cgal
305 lines
11 KiB
C++
305 lines
11 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_STL_H
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#define CGAL_BGL_IO_STL_H
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#include <CGAL/boost/graph/IO/Generic_facegraph_builder.h>
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#include <CGAL/IO/STL.h>
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#include <CGAL/assertions.h>
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#include <CGAL/boost/graph/Euler_operations.h>
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#include <CGAL/boost/graph/named_params_helper.h>
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#include <fstream>
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#include <iostream>
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#include <string>
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namespace CGAL {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Read
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namespace IO {
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namespace internal {
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// Use CRTP to gain access to the protected members without getters/setters.
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template <typename FaceGraph, typename Point>
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class STL_builder
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: public Generic_facegraph_builder<FaceGraph, Point, STL_builder<FaceGraph, Point> >
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{
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typedef STL_builder<FaceGraph, Point> Self;
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typedef Generic_facegraph_builder<FaceGraph, Point, Self> Base;
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typedef typename Base::Point_container Point_container;
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typedef typename Base::Face Face;
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typedef typename Base::Face_container Face_container;
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public:
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STL_builder(std::istream& is, bool verbose) : Base(is, verbose) { }
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template <typename NamedParameters>
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bool read(std::istream& is,
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Point_container& points,
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Face_container& faces,
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const NamedParameters& np,
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bool verbose)
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{
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return read_STL(is, points, faces, np, verbose);
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}
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};
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} // namespace internal
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} // namespace IO
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/*!
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\ingroup PkgBGLIOFct
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reads the graph `g` from data in the STL format.
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\tparam FaceGraph a model of `MutableFaceGraph`
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\tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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\param is the input stream
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\param g the graph to be built from the input data
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\param verbose whether extra information is printed when an incident occurs during reading
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\param np optional \ref bgl_namedparameters "Named Parameters" described below
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\cgalNamedParamsBegin
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\cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `g`.
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If this parameter is omitted, an internal property map for `CGAL::vertex_point_t` should be available in `FaceGraph`\cgalParamEnd
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\cgalNamedParamsEnd
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\pre The data must represent a 2-manifold
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\attention The graph `g` is not cleared, and the data from the stream is added.
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\returns `true` if the resulting mesh is valid.
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\sa Overloads of this function for specific models of the concept `FaceGraph`.
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\see \ref IOStreamSTL
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*/
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template <typename FaceGraph, typename CGAL_BGL_NP_TEMPLATE_PARAMETERS>
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bool read_STL(std::istream& is,
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FaceGraph& g,
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const CGAL_BGL_NP_CLASS& np,
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bool verbose = true)
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{
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typedef typename CGAL::GetVertexPointMap<FaceGraph, CGAL_BGL_NP_CLASS>::type VPM;
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typedef typename boost::property_traits<VPM>::value_type Point;
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IO::internal::STL_builder<FaceGraph, Point> builder(is, verbose);
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return builder(g, np);
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}
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/*!
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\ingroup PkgBGLIOFct
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reads the graph `g` from the file `fname` in the STL format.
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\tparam FaceGraph a model of `MutableFaceGraph`
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\tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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\param fname the name of the input file
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\param g the graph to be built from the input data
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\param verbose whether extra information is printed when an incident occurs during reading
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\param np optional \ref bgl_namedparameters "Named Parameters" described below
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\cgalNamedParamsBegin
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\cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `g`.
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If this parameter is omitted, an internal property map for `CGAL::vertex_point_t` should be available in `FaceGraph`\cgalParamEnd
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\cgalNamedParamsEnd
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\pre The data must represent a 2-manifold
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\attention The graph `g` is not cleared, and the data from the stream is added.
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\returns `true` if the resulting mesh is valid.
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\sa Overloads of this function for specific models of the concept `FaceGraph`.
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\see \ref IOStreamSTL
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*/
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template <typename FaceGraph, typename CGAL_BGL_NP_TEMPLATE_PARAMETERS>
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bool read_STL(const char* fname, FaceGraph& g, const CGAL_BGL_NP_CLASS& np,
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bool verbose = true)
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{
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std::ifstream is(fname);
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if(!is)
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{
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std::cerr<<"File doesn't exist."<<std::endl;
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return false;
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}
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return read_STL(is, g, np, verbose);
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}
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template <typename FaceGraph, typename CGAL_BGL_NP_TEMPLATE_PARAMETERS>
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bool read_STL(const std::string& fname, FaceGraph& g, const CGAL_BGL_NP_CLASS& np,
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bool verbose = true)
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{
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return read_STL(fname.c_str(), g, np, verbose);
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}
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template <typename FaceGraph>
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bool read_STL(std::istream& is, FaceGraph& g) { return read_STL(is, g, parameters::all_default()); }
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template <typename FaceGraph>
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bool read_STL(const char* fname, FaceGraph& g) { return read_STL(fname, g, parameters::all_default()); }
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template <typename FaceGraph>
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bool read_STL(const std::string& fname, FaceGraph& g) { return read_STL(fname, g, parameters::all_default()); }
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////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Write
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/*!
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\ingroup PkgBGLIOFct
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writes the graph `g` in the stream `os` in the STL format.
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\tparam FaceGraph a model of `FaceListGraph` and `HalfedgeListGraph`
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\tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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\param os the output stream
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\param g the graph to be output
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\param np optional \ref bgl_namedparameters "Named Parameters" described below
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\cgalNamedParamsBegin
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\cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `g`.
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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`\cgalParamEnd
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\cgalNamedParamsEnd
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\pre The graph must contain only triangle faces.
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\returns `true` if writing was successful.
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\see \ref IOStreamSTL
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*/
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template <typename FaceGraph, typename CGAL_BGL_NP_TEMPLATE_PARAMETERS>
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bool write_STL(std::ostream& os,
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const FaceGraph& g,
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const CGAL_BGL_NP_CLASS& np)
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{
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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::GetVertexPointMap<FaceGraph, CGAL_BGL_NP_CLASS>::const_type VPM;
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typedef typename boost::property_traits<VPM>::reference Point_ref;
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typedef typename boost::property_traits<VPM>::value_type Point;
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typedef typename Kernel_traits<Point>::Kernel::Vector_3 Vector;
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using parameters::choose_parameter;
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using parameters::get_parameter;
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VPM vpm = choose_parameter(get_parameter(np, internal_np::vertex_point),
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get_const_property_map(CGAL::vertex_point, g));
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if(!os.good())
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return false;
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if(get_mode(os) == IO::BINARY)
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{
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os << "FileType: Binary ";
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const boost::uint32_t N32 = static_cast<boost::uint32_t>(faces(g).size());
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os.write(reinterpret_cast<const char *>(&N32), sizeof(N32));
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for(const face_descriptor f : faces(g))
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{
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const halfedge_descriptor h = halfedge(f, g);
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Point_ref p = get(vpm, target(h, g));
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Point_ref q = get(vpm, target(next(h, g), g));
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Point_ref r = get(vpm, source(h, g));
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Vector n = collinear(p, q, r) ? Vector(1, 0, 0) : unit_normal(p, q, r);
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const float coords[12] =
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{
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static_cast<float>(to_double(n.x())), static_cast<float>(to_double(n.y())), static_cast<float>(to_double(n.z())),
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static_cast<float>(to_double(p.x())), static_cast<float>(to_double(p.y())), static_cast<float>(to_double(p.z())),
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static_cast<float>(to_double(q.x())), static_cast<float>(to_double(q.y())), static_cast<float>(to_double(q.z())),
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static_cast<float>(to_double(r.x())), static_cast<float>(to_double(r.y())), static_cast<float>(to_double(r.z())) };
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for(int i=0; i<12; ++i)
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os.write(reinterpret_cast<const char *>(&coords[i]), sizeof(coords[i]));
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os << " ";
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}
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}
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else
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{
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os << "solid"<<std::endl;;
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for(const face_descriptor f : faces(g))
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{
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halfedge_descriptor h = halfedge(f, g);
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Point_ref p = get(vpm, target(h, g));
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Point_ref q = get(vpm, target(next(h, g), g));
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Point_ref r = get(vpm, source(h, g));
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Vector n = collinear(p, q, r) ? Vector(1, 0, 0) : unit_normal(p, q, r);
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os << "facet normal " << n << "\nouter loop"<<std::endl;;
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os << "vertex " << p <<std::endl;
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os << "vertex " << q <<std::endl;
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os << "vertex " << r <<std::endl;
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os << "endloop\nendfacet"<<std::endl;
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}
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os << "endsolid"<<std::endl;;
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}
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return os.good();
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}
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/*!
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\ingroup PkgBGLIOFct
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writes the graph `g` in the STL format into a file named `fname`.
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\tparam FaceGraph a model of `FaceListGraph` and `HalfedgeListGraph`
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\tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
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\param fname the name of the output stream
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\param g the graph to be output
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\param np optional \ref bgl_namedparameters "Named Parameters" described below
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\cgalNamedParamsBegin
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\cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `g`.
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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`\cgalParamEnd
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\cgalNamedParamsEnd
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\pre The graph must contain only triangle faces.
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\sa Overloads of this function for specific models of the concept `FaceGraph`.
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\see \ref IOStreamSTL
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*/
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template <typename FaceGraph, typename CGAL_BGL_NP_TEMPLATE_PARAMETERS>
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bool write_STL(const char* fname, const FaceGraph& g, const CGAL_BGL_NP_CLASS& np)
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{
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std::ofstream os(fname);
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return write_STL(os, g, np);
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}
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template <typename FaceGraph, typename CGAL_BGL_NP_TEMPLATE_PARAMETERS>
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bool write_STL(const std::string& fname, const FaceGraph& g, const CGAL_BGL_NP_CLASS& np)
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{
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return write_STL(fname.c_str(), g, np);
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}
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template <typename FaceGraph>
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bool write_STL(std::ostream& os, const FaceGraph& g) { return write_STL(os, g, parameters::all_default()); }
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template <typename FaceGraph>
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bool write_STL(const char* fname, const FaceGraph& g) { return write_STL(fname, g, parameters::all_default()); }
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template <typename FaceGraph>
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bool write_STL(const std::string& fname, const FaceGraph& g) { return write_STL(fname, g, parameters::all_default()); }
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} // namespace CGAL
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#endif // CGAL_BGL_IO_STL_H
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