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Relative Position Shenanigans
Hello! First posting, have used these forums oh-so-many times for expression help. They actually have led me to crafting an expression that almost works, but not quite and I cant figure out why.
The situation: 2 layers, one “parenting” the other and I want the “child’s” position to change relative to the parent starting at a certain time. (NOTE: the layers are not actually set as parent and child, they are only linked by the following expression)
I used this expression:
freeze = [960, 540]
text = thisComp.layer("Show1").transform.position;timetoStart= 5.1
if(time > timetoStart){
text-sub(text, freeze);
}else{freeze;}I figured the simple difference of a difference calculation would do the trick, but the expression just yields a constant 960, 540 as the position. I double checked and sub(text, freeze) does yield the proper difference (and it’s dynamic) but when I try to subtract the dynamic difference from text if yields a constant value.
What’s going on? 🙁
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2 Replies
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I think you need to reference where the Show1 layer was at timetoStart.
change this:
text-sub(text, freeze);
to this:
text – text.valueAtTime(timetoStart) + freeze;
Dan
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Dan,
Brilliant. Worked like a charm.Thank you!
-Jon
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