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弹性3D文字翻转特效

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弹性3D文字翻转特效,AE弹性表达式:

amp = .1; 
freq = 2.0; 
decay = 2.0; 
n = 0; 
if (numKeys > 0){ 
n = nearestKey(time).index; 
if (key(n).time > time){n--;} 
} 
if (n == 0){ t = 0;} 
else{t = time - key(n).time;} 
if (n > 0){ 
v = velocityAtTime(key(n).time - thisComp.frameDuration/10); 
value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t); 
} 
else{value}

 

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