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| I am writing an expression to bring the opacity of a layer up when it another layer comes close to it. I'd like to have it decay at a different rate than it builds. Here's what I have going on:
o = transform.opacity; s = thisComp.layer("center").transform.scale[0]/100; //use the scale to affect the radius of influence of the null
l = length(transform.position, thisComp.layer("center").transform.position); lprev = length(transform.position.valueAtTime(time-thisComp.frameDuration), thisComp.layer("center").transform.position.valueAtTime(time-thisComp.frameDuration));
if(lprev > l){ l = lprev; } o - (l/s);
My attempt to look at the previous frame doesn't seem to be working.
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