Iphone Mockup White

弹性表达式
bla = 0;
if (numKeys > 0) {bla = nearestKey(time).index;if (key(bla).time > time){bla--;}}if (bla == 0) {t = 0;} else {t = time - key(bla).time;}
if (bla > 0){v = velocityAtTime(key(bla).time - thisComp.frameDuration/10);
amp = 8;freq = 1.0;decay = 2.0;value + (v/100)*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);}else{value;}