55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
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#ifndef IGL_TRIANGLE_CDT_H
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#define IGL_TRIANGLE_CDT_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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namespace triangle
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{
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// CDT Construct the constrained delaunay triangulation of the convex hull
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// of a given set of points and segments in 2D. This differs from a direct
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// call to triangulate because it will preprocess the input to remove
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// duplicates and return an adjusted segment list on the output.
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//
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//
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// BACKGROUND_MESH Construct a background mesh for a (messy) texture mesh with
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// cosntraint edges that are about to deform.
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//
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// Inputs:
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// V #V by 2 list of texture mesh vertices
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// E #E by 2 list of constraint edge indices into V
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// flags string of triangle flags should contain "-c" unless the
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// some subset of segments are known to enclose all other
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// points/segments.
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// Outputs:
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// WV #WV by 2 list of background mesh vertices
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// WF #WF by 2 list of background mesh triangle indices into WV
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// WE #WE by 2 list of constraint edge indices into WV (might be smaller
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// than E because degenerate constraints have been removed)
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// J #V list of indices into WF/WE for each vertex in V
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//
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template <
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typename DerivedV,
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typename DerivedE,
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typename DerivedWV,
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typename DerivedWF,
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typename DerivedWE,
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typename DerivedJ>
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IGL_INLINE void cdt(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedE> & E,
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const std::string & flags,
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Eigen::PlainObjectBase<DerivedWV> & WV,
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Eigen::PlainObjectBase<DerivedWF> & WF,
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Eigen::PlainObjectBase<DerivedWE> & WE,
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Eigen::PlainObjectBase<DerivedJ> & J);
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}
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}
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#ifndef IGL_STATIC_LIBRARY
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#include "cdt.cpp"
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#endif
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#endif
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