Sergey Sharybin
cd6ed0bee5
When creating tile data include only triangles which have got intersection with tile's rectangle only. This saves quite a lot of per-pixel iterations through triangles which simply can not affect on current tile. In fact, it's AABB check is used here. It could be improved further, but it'll slowdown tile data generation with questionable speedup. Another major slowdown is in fact caused by voronoi triangulation code. Currently it's used naive algorithm which is O(N^2) where N is number of edges. Added few euristics there and removed unused part of code, which gave quite noticeable speedup already. This could be improved further, but this node is not ment to be used for lots of markers. It's also generates wrong triangulation when there're many sites used. Need to be investigated further.