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Decaying Falling Leaf
Hi all,
I’ve been going through the posts and others on different forums for an expression that will do the following.
I am trying to animate a single falling leaf. The idea is that it would fall slowly (almost like floating) rocking side to said, but the rocking eases to a full stop when the leaf hits the floor – which about half way down the screen.
I’ve seen these two expression either here or on another forum. One is for a floating fall, the other for a pendulum. I’m thinking what i need is something that mixes the two:
Position
sp=1;
amp=200;
gravity = 10;
x = Math.sin(time*sp)*amp;
y= time*time*gravity;
value + [x,y];Rotation
sp=1;
amp=5;
x = Math.sin(time*sp)*amp;
value - x;Here is a pendulum effect:
veloc = 7;
amplitude = 80;
decay = .7;amplitude*Math.sin(veloc*time)/Math.exp(decay*time)
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1 Reply
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to get precise control over when the leaf will stop, i think i’d try manually keyframing this…
if you set set the anchor point of the leaf to be above the leaf (rather than the default center), then you can generate the side-to-side movement with rotation keyframes and easy-ease. the higher the anchor point the broader the side-to-side movement.
then just animate the y position of the leaf with ease-ease on the last keyframe.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW
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