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Created July 14, 2015 17:56
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readme.md

canvas speed tricks

  • changing fill properties is expensive. change fill color, opacity, line color, line width as infrequently as possible
  • it's faster to do a lot of ctx.rect and then one ctx.fill than to ctx.fillRect
  • always draw to even pixels, for widths and locations. use ~~ to do this.
  • use a module like leftpad to write out the files in a way that ffmpeg can understand
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