55 lines
1.8 KiB
C
55 lines
1.8 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) 2017 Zhongshi Jiang <jiangzs@nyu.edu>
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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_EXACT_GEODESIC_H
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#define IGL_EXACT_GEODESIC_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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namespace igl
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{
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// Exact geodesic algorithm for triangular mesh with the implementation from https://code.google.com/archive/p/geodesic/,
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// and the algorithm first described by Mitchell, Mount and Papadimitriou in 1987
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//
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// Inputs:
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// V #V by 3 list of 3D vertex positions
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// F #F by 3 list of mesh faces
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// VS #VS by 1 vector specifying indices of source vertices
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// FS #FS by 1 vector specifying indices of source faces
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// VT #VT by 1 vector specifying indices of target vertices
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// FT #FT by 1 vector specifying indices of target faces
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// Output:
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// D #VT+#FT by 1 vector of geodesic distances of each target w.r.t. the nearest one in the source set
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//
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// Note:
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// Specifying a face as target/source means its center.
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//
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedVS,
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typename DerivedFS,
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typename DerivedVT,
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typename DerivedFT,
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typename DerivedD>
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IGL_INLINE void exact_geodesic(
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const Eigen::MatrixBase<DerivedV> &V,
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const Eigen::MatrixBase<DerivedF> &F,
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const Eigen::MatrixBase<DerivedVS> &VS,
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const Eigen::MatrixBase<DerivedFS> &FS,
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const Eigen::MatrixBase<DerivedVT> &VT,
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const Eigen::MatrixBase<DerivedFT> &FT,
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Eigen::PlainObjectBase<DerivedD> &D);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "exact_geodesic.cpp"
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#endif
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#endif
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