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Ball Bouncing again

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Alessandro LucchiniBall Bouncing again
by on Apr 15, 2011 at 3:32:14 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.


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Jason MettlerRe: Ball Bouncing again
by on Apr 15, 2011 at 4:42:13 pm

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


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Alessandro LucchiniRe: Ball Bouncing again
by on Apr 15, 2011 at 4:50:27 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.


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Jason MettlerRe: Ball Bouncing again
by on Apr 15, 2011 at 6:35:48 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.

http://twurl.nl/7h6s72


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Alessandro LucchiniRe: Ball Bouncing again
by on Apr 18, 2011 at 9:37:25 am

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


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