Well, do what I do – go bounce a ball and see what happens…
when a ball hits the ground, it bounces in high archs with ground hits further apart, and eventually is barely moving off the ground with frequent ground hits.
So on the hits to the ground you want to use linear interpolation for both time (temporal) and space (spatial). The linear keyframes make an abrupt change in speed, direction and position as you would see in real life.
If you’re ball is bouncing straight up then on the arcs you want to use Easy Ease keyframes for the temporal and spatial. This makes the ball sort of hang in the air a moment before coming down.
If it is bouncing from left to right (or R to L) then on the arcs you probably want to use auto bezierfor the temporal and spatial. This will create natural arcs.
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Aharon Rabinowitz
aharon(AT)yahoo(DOT)com
http://www.allbetsareoff.com
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