70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2018 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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#ifndef IGL_IS_INTRINSIC_DELAUNAY_H
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#define IGL_IS_INTRINSIC_DELAUNAY_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <vector>
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namespace igl
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{
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// IS_INTRINSIC_DELAUNAY Determine if each edge in the mesh (V,F) is Delaunay.
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//
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// Inputs:
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// l #l by dim list of edge lengths
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// F #F by 3 list of triangles indices
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// Outputs:
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// D #F by 3 list of bools revealing whether edges corresponding 23 31 12
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// are locally Delaunay. Boundary edges are by definition Delaunay.
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// Non-Manifold edges are by definition not Delaunay.
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template <
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typename Derivedl,
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typename DerivedF,
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typename DerivedD>
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IGL_INLINE void is_intrinsic_delaunay(
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const Eigen::MatrixBase<Derivedl> & l,
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const Eigen::MatrixBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedD> & D);
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// Inputs:
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// uE2E #uE list of lists mapping unique edges to (half-)edges
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template <
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typename Derivedl,
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typename DerivedF,
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typename uE2EType,
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typename DerivedD>
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IGL_INLINE void is_intrinsic_delaunay(
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const Eigen::MatrixBase<Derivedl> & l,
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const Eigen::MatrixBase<DerivedF> & F,
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const std::vector<std::vector<uE2EType> > & uE2E,
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Eigen::PlainObjectBase<DerivedD> & D);
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// Determine whether a single edge is Delaunay using a provided (extrinsic) incirle
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// test.
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//
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// Inputs:
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// l #l by dim list of edge lengths
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// uE2E #uE list of lists of indices into E of coexisting edges (see
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// unique_edge_map)
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// num_faces number of faces (==#F)
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// uei index into uE2E of edge to check
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// Returns true iff edge is Delaunay
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template <
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typename Derivedl,
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typename uE2EType,
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typename Index>
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IGL_INLINE bool is_intrinsic_delaunay(
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const Eigen::MatrixBase<Derivedl> & l,
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const std::vector<std::vector<uE2EType> > & uE2E,
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const Index num_faces,
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const Index uei);
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}
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#ifndef IGL_STATIC_LIBRARY
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#include "is_intrinsic_delaunay.cpp"
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#endif
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#endif
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