| SeidelDecomposer |
Convex decomposition algorithm created by Raimund Seidel Properties: - Decompose the polygon into trapezoids, then triangulate. - To use the trapezoid data, use ConvexPartitionTrapezoid() - Generate a lot of garbage due to incapsulation of the Poly2Tri library. - Running time is O(n log n), n = number of vertices. - Running time is almost linear for most simple polygons. - Does not care about winding order. For more information, see Raimund Seidel's paper "A simple and fast incremental randomized algorithm for computing trapezoidal decompositions and for triangulating polygons" See also: "Computational Geometry", 3rd edition, by Mark de Berg et al, Chapter 6.2 "Computational Geometry in C", 2nd edition, by Joseph O'Rourke Original code from the Poly2Tri project by Mason Green. http://code.google.com/p/poly2tri/source/browse?repo=archive#hg/scala/src/org/poly2tri/seidel This implementation is from Dec 14, 2010 |