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mozilla / shumway

Shumway is a Flash VM and runtime written in JavaScript
Apache License 2.0
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Shape quadratic bezier hitTest #2448

Open ivanpopelyshev opened 5 years ago

ivanpopelyshev commented 5 years ago

Just in case if someone copies shape hitTest from the project - it leads to artifacts on my swf-s. Here is fixed version.

image

Left-to-right:

  1. Shape
  2. Shumway hitmap
  3. Corner cases (t=0, t=1, t1=t2) fix
  4. if (a!==0) fix, helps with curves that have cpY as an average of fromY and toY