59 lines
3.1 KiB
C
59 lines
3.1 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) 2014 Daniele Panozzo <daniele.panozzo@gmail.com>, Olga Diamanti <olga.diam@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_FIND_CROSS_FIELD_SINGULARITIES_H
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#define IGL_FIND_CROSS_FIELD_SINGULARITIES_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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// Computes singularities of a cross field, assumed combed
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// Inputs:
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// V #V by 3 eigen Matrix of mesh vertex 3D positions
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// F #F by 3 eigen Matrix of face (quad) indices
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// mismatch #F by 3 eigen Matrix containing the integer mismatch of the cross field
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// across all face edges
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// Output:
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// isSingularity #V by 1 boolean eigen Vector indicating the presence of a singularity on a vertex
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// singularityIndex #V by 1 integer eigen Vector containing the singularity indices
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//
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template <typename DerivedV, typename DerivedF, typename DerivedM, typename DerivedO>
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IGL_INLINE void find_cross_field_singularities(const Eigen::PlainObjectBase<DerivedV> &V,
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const Eigen::PlainObjectBase<DerivedF> &F,
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const Eigen::PlainObjectBase<DerivedM> &mismatch,
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Eigen::PlainObjectBase<DerivedO> &isSingularity,
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Eigen::PlainObjectBase<DerivedO> &singularityIndex);
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// Wrapper that calculates the mismatch if it is not provided.
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// Note that the field in PD1 and PD2 MUST BE combed (see igl::comb_cross_field).
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// Inputs:
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// V #V by 3 eigen Matrix of mesh vertex 3D positions
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// F #F by 3 eigen Matrix of face (quad) indices
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// PD1 #F by 3 eigen Matrix of the first per face cross field vector
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// PD2 #F by 3 eigen Matrix of the second per face cross field vector
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// Output:
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// isSingularity #V by 1 boolean eigen Vector indicating the presence of a singularity on a vertex
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// singularityIndex #V by 1 integer eigen Vector containing the singularity indices
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//
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template <typename DerivedV, typename DerivedF, typename DerivedO>
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IGL_INLINE void find_cross_field_singularities(const Eigen::PlainObjectBase<DerivedV> &V,
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const Eigen::PlainObjectBase<DerivedF> &F,
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const Eigen::PlainObjectBase<DerivedV> &PD1,
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const Eigen::PlainObjectBase<DerivedV> &PD2,
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Eigen::PlainObjectBase<DerivedO> &isSingularity,
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Eigen::PlainObjectBase<DerivedO> &singularityIndex,
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bool isCombed = false);
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}
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#ifndef IGL_STATIC_LIBRARY
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#include "find_cross_field_singularities.cpp"
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#endif
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#endif
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