67 lines
2.8 KiB
C++
67 lines
2.8 KiB
C++
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2016 Qingnan Zhou <qnzhou@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 "delaunay_triangulation.h"
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#include "flip_edge.h"
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#include "lexicographic_triangulation.h"
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#include "unique_edge_map.h"
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#include "is_delaunay.h"
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#include <vector>
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#include <sstream>
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template<
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typename DerivedV,
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typename Orient2D,
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typename InCircle,
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typename DerivedF>
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IGL_INLINE void igl::delaunay_triangulation(
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const Eigen::MatrixBase<DerivedV>& V,
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Orient2D orient2D,
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InCircle incircle,
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Eigen::PlainObjectBase<DerivedF>& F)
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{
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assert(V.cols() == 2);
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typedef typename DerivedF::Scalar Index;
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typedef typename DerivedV::Scalar Scalar;
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igl::lexicographic_triangulation(V, orient2D, F);
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const size_t num_faces = F.rows();
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if (num_faces == 0) {
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// Input points are degenerate. No faces will be generated.
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return;
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}
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assert(F.cols() == 3);
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typedef Eigen::Matrix<typename DerivedF::Scalar,Eigen::Dynamic,2> MatrixX2I;
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MatrixX2I E,uE;
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Eigen::VectorXi EMAP;
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std::vector<std::vector<Index> > uE2E;
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igl::unique_edge_map(F, E, uE, EMAP, uE2E);
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bool all_delaunay = false;
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while(!all_delaunay) {
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all_delaunay = true;
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for (size_t i=0; i<uE2E.size(); i++) {
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if (uE2E[i].size() == 2) {
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if (!is_delaunay(V,F,uE2E,incircle,i)) {
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all_delaunay = false;
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flip_edge(F, E, uE, EMAP, uE2E, i);
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}
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}
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}
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}
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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template void igl::delaunay_triangulation<Eigen::Matrix<double, -1, -1, 0, -1, -1>, short (*)(double const*, double const*, double const*), short (*)(double const*, double const*, double const*, double const*), Eigen::Matrix<int, -1, -1, 0, -1, -1> >(Eigen::MatrixBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, short (*)(double const*, double const*, double const*), short (*)(double const*, double const*, double const*, double const*), Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
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#ifdef WIN32
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template void igl::delaunay_triangulation<class Eigen::Matrix<double, -1, -1, 0, -1, -1>, short(*)(double const *, double const *, double const *), short(*)(double const *, double const *, double const *, double const *), class Eigen::Matrix<int, -1, -1, 0, -1, -1>>(class Eigen::MatrixBase<class Eigen::Matrix<double, -1, -1, 0, -1, -1>> const &, short(*const)(double const *, double const *, double const *), short(*const)(double const *, double const *, double const *, double const *), class Eigen::PlainObjectBase<class Eigen::Matrix<int, -1, -1, 0, -1, -1>> &);
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#endif
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#endif
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