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May 29th, 2016
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  1. start = (fps_) ->
  2. fps = 1000 / fps_
  3. prev = Date.now()
  4. startTime = prev
  5. step()
  6.  
  7. step = ->
  8. window.requestAnimationFrame step
  9. draw()
  10. now = Date.now()
  11. d = now - prev
  12. if d > fps
  13. prev = now - (d % fps)
  14. respond d
  15.  
  16. start 60
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