55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include "mesh_to_polyhedron.h"
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#include <CGAL/Polyhedron_3.h>
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#include <CGAL/Polyhedron_incremental_builder_3.h>
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template <typename Polyhedron>
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IGL_INLINE bool igl::copyleft::cgal::mesh_to_polyhedron(
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const Eigen::MatrixXd & V,
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const Eigen::MatrixXi & F,
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Polyhedron & poly)
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{
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typedef typename Polyhedron::HalfedgeDS HalfedgeDS;
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// Postcondition: hds is a valid polyhedral surface.
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CGAL::Polyhedron_incremental_builder_3<HalfedgeDS> B(poly.hds());
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B.begin_surface(V.rows(),F.rows());
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typedef typename HalfedgeDS::Vertex Vertex;
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typedef typename Vertex::Point Point;
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assert(V.cols() == 3 && "V must be #V by 3");
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for(int v = 0;v<V.rows();v++)
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{
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B.add_vertex(Point(V(v,0),V(v,1),V(v,2)));
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}
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assert(F.cols() == 3 && "F must be #F by 3");
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for(int f=0;f<F.rows();f++)
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{
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B.begin_facet();
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for(int c = 0;c<3;c++)
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{
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B.add_vertex_to_facet(F(f,c));
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}
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B.end_facet();
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}
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if(B.error())
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{
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B.rollback();
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return false;
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}
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B.end_surface();
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return poly.is_valid();
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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#include <CGAL/Simple_cartesian.h>
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#include <CGAL/Polyhedron_items_with_id_3.h>
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template bool igl::copyleft::cgal::mesh_to_polyhedron<CGAL::Polyhedron_3<CGAL::Simple_cartesian<double>, CGAL::Polyhedron_items_with_id_3, CGAL::HalfedgeDS_default, std::allocator<int> > >(Eigen::Matrix<double, -1, -1, 0, -1, -1> const&, Eigen::Matrix<int, -1, -1, 0, -1, -1> const&, CGAL::Polyhedron_3<CGAL::Simple_cartesian<double>, CGAL::Polyhedron_items_with_id_3, CGAL::HalfedgeDS_default, std::allocator<int> >&);
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#endif
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