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Another attempt at stippling with a more basic relaxation approach but using multiple dot sizes to add texture.

  1. Position starting points with rejection sampling, using the grayscale image as the density function.
  2. Use Lloyd's algorithm to get a relaxed Voronoi diagram from the starting points.
  3. Size the dots based on the darkness of the pixel at their position, then shrink them as much as necessary to avoid collisions - this could be done all at once but it seems to produce some splotchy artifacts, so instead they're shrunk a little bit at a time.

The heavy computation is done in a web worker to avoid locking up the page, and takes about 15-20 seconds to complete.

See also: Voronoi relaxation, Stippling, Philippe Rivière's CCPD Snowden

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license: mit
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license: mit
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license: mit
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license: mit