• Adobe After Effects

  Ball Bouncing again

  Posted by Alessandro Lucchini on April 15, 2011 at 3:32 pm

  Hi all.

  I need to animate a bouncing ball through a maze, with obstacles and so on.
  Everything went ok so far, tweaking Dan Ebberts’s expression about bouncing and squashing that I found here, but when it came to have the ball bounce between a floor and a ceiling, i don’t know what to do.

  Any ideas?

  Thanks.

  Alessandro Lucchini replied 15 years, 3 months ago 2 Members · 4 Replies
• 4 Replies

• 

  Jason Mettler

  April 15, 2011 at 4:42 pm

  In the expressions, is there a way to limit the pixel range for top and bottom movement?
• 

  Alessandro Lucchini

  April 15, 2011 at 4:50 pm

  There’s a “floor” value, which is the y at which the ball bounces up again, but no upper limit. It should be enough finding a way to switch from an absolute cosine like function to some kind of sawtooth, and then back again.
• 

  Jason Mettler

  April 15, 2011 at 6:35 pm

  Here’s a tutorial that goes over the Sine wave math for AE. It’s quite rambling and he makes a lot of mistakes that get corrected later but, nonetheless, it’s quite informative. You may get some ideas.

  https://twurl.nl/7h6s72
• 

  Alessandro Lucchini

  April 18, 2011 at 9:37 am

  Thank you very much, it won’t be easy but i think i can get some ideas from that.

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