65 lines
1.9 KiB
C++
65 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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#ifndef IGL_WINDING_NUMBER_H
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#define IGL_WINDING_NUMBER_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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// Minimum number of iterms per openmp thread
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#ifndef IGL_WINDING_NUMBER_OMP_MIN_VALUE
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# define IGL_WINDING_NUMBER_OMP_MIN_VALUE 1000
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#endif
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namespace igl
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{
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// WINDING_NUMBER Compute the sum of solid angles of a triangle/tetrahedron
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// described by points (vectors) V
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//
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// Templates:
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// dim dimension of input
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// Inputs:
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// V n by 3 list of vertex positions
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// F #F by 3 list of triangle indices, minimum index is 0
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// O no by 3 list of origin positions
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// Outputs:
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// S no by 1 list of winding numbers
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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 DerivedO,
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typename DerivedW>
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IGL_INLINE void winding_number(
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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<DerivedO> & O,
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Eigen::PlainObjectBase<DerivedW> & W);
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// Compute winding number of a single point
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//
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// Inputs:
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// V n by dim list of vertex positions
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// F #F by dim list of triangle indices, minimum index is 0
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// p single origin position
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// Outputs:
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// w winding number of this point
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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 Derivedp>
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IGL_INLINE typename DerivedV::Scalar winding_number(
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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<Derivedp> & p);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "winding_number.cpp"
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#endif
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#endif
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