Improve voronoi masking algorithm #1
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Here's a relevant boundary with distance errors present in the old algorithm:
Compared to the new square frame size computation results:
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Changed voronoi tesselation to respect frame dimensions during distance calculations.
Previously, because the tesselation is based on the centroids of frames, the distance metric used by the algorithm mishandled non-square frame sizes. In effect, horizontal distance in frames had precedence over vertical distance, resulting in partially clipped regions & lost data. This has been corrected by scaling frames to be square during tesselation.