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Link position speed to object scale frequency
Hi everyone, hope you can help. I am looking to create an animation of a car. Instead of the wheels rotating they will scale up and down to the pace of the car. So the faster the pace the higher the frequency of the scaling. The scaling only has to be from 100 to 110%. I have looked into taking the position.speed of the layer and trying to use it to run the frequency of a sin wave but not having much luck. Any thoughts would be most appreciated.
Cheers,
Brad -
2 Replies
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Thanks Dan. I did look at that earlier but glazed over. I have created a workaround that is working. I am trying to create a delay in a secondary layer to offset its position value, but can’t get it to work. Would you have any suggestions? I need to offset the value of “d” by 2 frames.
Cheers,
Bradfreq = thisComp.layer("controller").effect("sine value")("Slider");
amp = thisComp.layer("controller").effect("max position height value")("Slider");
n = freq.numKeys;
if (n > 0 && freq.key(1).time < time){
accum = freq.key(1).value*(freq.key(1).time - inPoint);
for (i = 2; i <= n; i++){
if (freq.key(i).time > time) break;
k1 = freq.key(i-1);
k2 = freq.key(i);
accum += (k1.value + k2.value)*(k2.time - k1.time)/2;
}
accum += (freq.value + freq.key(i-1).value)*(time - freq.key(i-1).time)/2;
}else{
accum = freq.value*(time - inPoint);
}
d = value[1] + amp*Math.sin(accum*Math.PI*2);[value[0], d]
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