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Parent and Expressions
Hi all
I have a simple animation on a solid layer’s position using “linear(time, 0, 3, [0,0], [500,500])”. (I must have the Position nim and max amount accurate coordinates.)
When I parent this layer to a null, position changes (anchorPoint of the null will become the center of animation on solid [0,0], and it disregards the native position of the layer)How could I use expressions in a way that parent works like its keyframed animation (Solid layer stays in its place)?
Thanks a lot
a = [0,0];
b = [500,500]c = linear(time,0,3,a,b);
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6 Replies
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Try it this way:
a = [0,0];
b = [500,500];if (hasParent){
a = parent.fromComp(a);
b = parent.fromComp(b);
}c = linear(time,0,3,a,b);
Dan
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Hi Dan
Thank you for respond.
It perfectly keeps the solid to its place when I’m parenting it, but then it neutralizes the parenting effect on the null. I mean the solid is not following the null anymore as its child.
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Sorry, I guess I didn’t understand what you’re trying to do.
Dan
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I’m sorry I couldn’t make it understandable.
I’ve recorded a very short video, I hope that you have time to take a look at it:Thank you so much for your time.
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OK, I think I get it. Unfortunately, I don’t think there’s any way to have a live link with the null like that because the expression has no way of knowing that the null has moved in the UI. It’s a different story if you’re keyframing the null movement, because the expression can compare where the null is now to where it was at time zero.
Dan
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Yeas I know what you mean.
Thanks a lot, Dan
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