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62 lines
2.2 KiB
62 lines
2.2 KiB
1 year ago
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#ifndef IGL_COPYLEFT_CGAL_FAST_WINDING_NUMBER
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#define IGL_COPYLEFT_CGAL_FAST_WINDING_NUMBER
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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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namespace copyleft
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{
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namespace cgal
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{
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/// Evaluate the fast winding number for point data, without known areas. The
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/// areas are calculated using igl::knn and igl::copyleft::cgal::point_areas.
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///
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/// This function performes the precomputation and evaluation all in one.
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/// If you need to acess the precomuptation for repeated evaluations, use the
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/// two functions designed for exposed precomputation, which are the first two
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/// functions see in igl/fast_winding_number.h
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///
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/// @param[in] P #P by 3 list of point locations
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/// @param[in] N #P by 3 list of point normals
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/// @param[in] Q #Q by 3 list of query points for the winding number
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/// @param[in] beta This is a Barnes-Hut style accuracy term that separates near feild
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/// from far field. The higher the beta, the more accurate and slower
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/// the evaluation. We reccommend using a beta value of 2.
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/// @param[in] expansion_order the order of the taylor expansion. We support 0,1,2.
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/// @param[out] WN #Q by 1 list of windinng number values at each query point
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///
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template <
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typename DerivedP,
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typename DerivedN,
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typename DerivedQ,
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typename BetaType,
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typename DerivedWN>
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IGL_INLINE void fast_winding_number(
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const Eigen::MatrixBase<DerivedP>& P,
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const Eigen::MatrixBase<DerivedN>& N,
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const Eigen::MatrixBase<DerivedQ>& Q,
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const int expansion_order,
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const BetaType beta,
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Eigen::PlainObjectBase<DerivedWN>& WN);
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/// \overload
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template <
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typename DerivedP,
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typename DerivedN,
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typename DerivedQ,
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typename DerivedWN>
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IGL_INLINE void fast_winding_number(
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const Eigen::MatrixBase<DerivedP>& P,
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const Eigen::MatrixBase<DerivedN>& N,
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const Eigen::MatrixBase<DerivedQ>& Q,
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Eigen::PlainObjectBase<DerivedWN>& WN);
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}
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}
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "fast_winding_number.cpp"
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#endif
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#endif
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