鲁达 AE万能表达式，需要的自取好吧
===============万能回弹==============
nearestKeyIndex = 0;
if (numKeys > 0){
nearestKeyIndex = nearestKey(time).index;
if (key(nearestKeyIndex).time > time){
nearestKeyIndex--;
}
}
if (nearestKeyIndex == 0) {
currentTime = 0;
} else {
currentTime = time - key(nearestKeyIndex).time;
}
if (nearestKeyIndex > 0 && currentTime < 1) {
calculatedVelocity = velocityAtTime(key(nearestKeyIndex).time - / 10);
amplitude = 0.1;
frequency = 2.0;
decay = 4.0;
value + calculatedVelocity * amplitude * Ma(frequency * currentTime * 2 * Ma) / Ma(decay * currentTime);
} else {
value;
}
==============反弹表达式=============
e = .7;
g = 5000;
nMax = 9;
n = 0;
if (numKeys > 0){
n = nearestKey(time).index;
if (key(n).time > time) n--;
}
if (n > 0){
t = time - key(n).time;
v = -velocityAtTime(key(n).time - .001)*e;
vl = length(v);
if (value instanceof Array){
vu = (vl > 0) ? normalize(v) : [0,0,0];
}else{
vu = (v < 0) ? -1 : 1;
}
tCur = 0;
segDur = 2*vl/g;
tNext = segDur;
nb = 1; // number of bounces
while (tNext < t && nb <= nMax){
vl *= e;
segDur *= e;
tCur = tNext;
tNext += segDur;
nb++
}
if(nb <= nMax){
delta = t - tCur;
value + vu*delta*(vl - g*delta/2);
}else{
value
}
}else value
==============抖动表达式=============
freq = 3;
decay = 5;
n = 0;
if (numKeys > 0){
n = nearestKey(time).index;
if (key(n).time > time) n--;
}
if (n > 0){
t = time - key(n).time;
amp = velocityAtTime(key(n).time - .001);
w = freq*Ma*2;
value + amp*(Ma(t*w)/Ma(decay*t)/w);
}else
Value