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62 lines
1.9 KiB
62 lines
1.9 KiB
1 year ago
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#ifndef IGL_SHARP_EDGES_H
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#define IGL_SHARP_EDGES_H
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#include <igl/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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// SHARP_EDGES Given a mesh, compute sharp edges.
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//
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// Inputs:
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// V #V by 3 list of vertex positions
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// F #F by 3 list of triangle mesh indices into V
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// angle dihedral angle considered to sharp (e.g., igl::PI * 0.11)
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// Outputs:
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// SE #SE by 2 list of edge indices into V
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// uE #uE by 2 list of unique undirected edges
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// EMAP #F*3 list of indices into uE, mapping each directed edge to unique
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// undirected edge so that uE(EMAP(f+#F*c)) is the unique edge
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// corresponding to E.row(f+#F*c)
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// uE2E #uE list of lists of indices into E of coexisting edges, so that
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// E.row(uE2E[i][j]) corresponds to uE.row(i) for all j in
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// 0..uE2E[i].size()-1.
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// sharp #SE list of indices into uE revealing sharp undirected edges
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedSE,
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typename DerivedE,
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typename DeriveduE,
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typename DerivedEMAP,
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typename uE2Etype,
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typename sharptype>
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IGL_INLINE void sharp_edges(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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const typename DerivedV::Scalar angle,
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Eigen::PlainObjectBase<DerivedSE> & SE,
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Eigen::PlainObjectBase<DerivedE> & E,
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Eigen::PlainObjectBase<DeriveduE> & uE,
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Eigen::PlainObjectBase<DerivedEMAP> & EMAP,
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std::vector<std::vector<uE2Etype> > & uE2E,
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std::vector< sharptype > & sharp);
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedSE>
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IGL_INLINE void sharp_edges(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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const typename DerivedV::Scalar angle,
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Eigen::PlainObjectBase<DerivedSE> & SE
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);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "sharp_edges.cpp"
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#endif
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#endif
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