mirror of https://github.com/CGAL/cgal
138 lines
4.7 KiB
C++
138 lines
4.7 KiB
C++
// Copyright (c) 2005 INRIA (France).
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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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// You can redistribute it and/or modify it under the terms of the GNU
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// General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Laurent Saboret, Pierre Alliez, Bruno Levy
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#ifndef CGAL_PARAMETERIZE_H
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#define CGAL_PARAMETERIZE_H
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#include <CGAL/license/Surface_mesh_parameterization.h>
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#include <CGAL/Mean_value_coordinates_parameterizer_3.h>
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#include <CGAL/Polygon_mesh_processing/connected_components.h>
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#include <boost/function_output_iterator.hpp>
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#include <boost/property_map/property_map.hpp>
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/// \file parameterize.h
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namespace CGAL {
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/// \ingroup PkgSurfaceParameterizationMainFunction
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///
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/// Compute a one-to-one mapping from a 3D triangle surface `mesh` to a
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/// 2D circle, using Floater Mean Value Coordinates algorithm.
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/// A one-to-one mapping is guaranteed.
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///
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/// The mapping is piecewise linear on the input mesh triangles.
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/// The result is a (u,v) pair of parameter coordinates for each vertex of the input mesh.
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///
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/// \pre `mesh` must be a surface with one connected component.
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/// \pre `mesh` must be a triangular mesh.
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///
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template <class ParameterizationMesh_3>
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typename Parameterizer_traits_3<ParameterizationMesh_3>::Error_code
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parameterize(ParameterizationMesh_3& mesh) ///< 3D mesh, model of ParameterizationMesh_3 concept
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{
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Mean_value_coordinates_parameterizer_3<ParameterizationMesh_3> parameterizer;
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return parameterizer.parameterize(mesh);
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}
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namespace Parameterization {
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template <typename Mesh, typename Map>
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struct Vertices {
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Vertices(const Mesh& mesh, Map& map)
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: mesh(mesh), map(&map), index(0)
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{}
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void operator()(const typename boost::graph_traits<Mesh>::face_descriptor& fd)
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{
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BOOST_FOREACH(typename boost::graph_traits<Mesh>::vertex_descriptor vd, vertices_around_face(halfedge(fd,mesh),mesh)){
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if(map->find(vd) == map->end()){
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(*map)[vd] = index++;
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}
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}
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}
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const Mesh& mesh;
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mutable Map* map;
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int index;
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};
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}
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/// \ingroup PkgSurfaceParameterizationMainFunction
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///
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/// Compute a one-to-one mapping from a 3D triangle surface `mesh` to a
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/// simple 2D domain.
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/// The mapping is piecewise linear on the triangle mesh.
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/// The result is a pair (u,v) of parameter coordinates for each vertex of the input mesh.
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///
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/// One-to-one mapping may be guaranteed or
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/// not, depending on the chosen Parameterizer algorithm.
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///
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/// \pre `mesh` must be a surface with one connected component.
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/// \pre `mesh` must be a triangular mesh.
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/// \pre The mesh border must be mapped onto a convex polygon
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/// (for fixed border parameterizations).
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template <class TriangleMesh, class Parameterizer, class HD, class VertexUVmap, typename VertexIndexMap, typename VertexParameterizedMap>
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typename Parameterizer_traits_3<TriangleMesh>::Error_code
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parameterize(TriangleMesh& mesh,
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Parameterizer parameterizer,
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HD bhd,
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VertexUVmap uvm,
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VertexIndexMap vimap,
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VertexParameterizedMap vpm)
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{
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typedef typename boost::graph_traits<TriangleMesh>::vertex_descriptor vertex_descriptor;
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typedef std::map<vertex_descriptor,int> Indices;
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Indices indices;
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CGAL::Polygon_mesh_processing::connected_component(face(opposite(bhd,mesh),mesh),
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mesh,
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boost::make_function_output_iterator(Parameterization::Vertices<TriangleMesh,Indices>(mesh,indices)));
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return parameterizer.parameterize(mesh, bhd, uvm, boost::make_assoc_property_map(indices), vpm);
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}
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template <class TM>
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class Seam_mesh;
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template <class TriangleMesh, class Parameterizer, class HD, class VertexUVmap, typename VertexIndexMap, typename VertexParameterizedMap>
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typename Parameterizer_traits_3<Seam_mesh<TriangleMesh> >::Error_code
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parameterize(Seam_mesh<TriangleMesh>& mesh,
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Parameterizer parameterizer,
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HD bhd,
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VertexUVmap uvm,
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VertexIndexMap vimap,
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VertexParameterizedMap vpm)
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{
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Seam_mesh_uv_map<TriangleMesh,VertexUVmap> putter(mesh,uvm);
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return parameterizer.parameterize(mesh, bhd, putter, vimap, vpm);
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}
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} //namespace CGAL
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#endif //CGAL_PARAMETERIZE_H
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