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how to animate rotation
Hi, I want to know if there any kind of expresion to animate the rotation in 3d space like a jack in the box, I mean, with a decay at the end of the move, for example start from 0 degrees to 90 degrees and stay move. Sorry my english.
Here a reference.
I can made by hand (keyframes), but I need to do something similar to this.
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2 Replies
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Keyframe your 90 degree x rotation to occur over a few frames and add this expression:
if (numKeys > 1 && time > key(2).time){
t = time - key(2).time;
amp = velocityAtTime(key(2).time - .001);
freq = 2;
decay = 3;
w = freq*Math.PI*2;
value + amp* Math.sin(t*w)/Math.exp(decay*t)/w
}else
value
Play around with the freq and decay parameters and the timing of the keyframes.
Dan
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Thank you Dan.
Like always you save my day.
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