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Connect/select the xPosition, yPosition within nested comp
I want to connect/select the xPosition, yPosition of animated character’s hand layer within a nested comp using a null in my overall composition. So, when the character in the nested comp moves his hands, the null moves in sync and position. See diagram.
Upstream Comp within is called “rappeller”. Containing comp of “rappeller” is called “rappeller and zip total comp”. I tried this expression on the null in “rappeller and zip total comp”:
I get a syntax error on this experimental expression to reach through the rappeller comp to the hand.
P = comp(“rappeller”).layer(“man hand lf”);
thisComp.layer(“rappeller”).toComp(P.toComp(P.transform.xPosition));
Still doing my own research on how to do this but would love some higher knowledge. Thanks, Mac
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3 Replies
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I think it would be like this for the x position:
L1 = comp("rappeller").layer("man hand lf");
p1 = L1.toComp(L1.anchorPoint);
L2 = thisComp.layer("rappeller");
p2 = L2.toComp(p1);
p2[0] -
Thank you Dan. I will give it a try. The one thing you recognized that escaped me was the need to anchor the relative positions within the rappeller precomp. His composition is 1200 x 804px and the comp he is imported into is 1200 x 2400 so the rappeller precomp exists at 20% scale.
See attached rappeller man comp.
As always, so appreciative of your help and guidance.
Thank you,
Mac
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Hi Dan,
Here is what I ended up with to adjust for hand anchor position versus where I will attach his rappelling rope to the null. Also used the same basic expression for the top hand.
Thank you,
Mac
/* Left Hand xPosition */
L1 = comp(“rappeller”).layer(“man hand lf”);
p1 = L1.toComp(L1.anchorPoint);
L2 = thisComp.layer(“rappeller”);
p2 = L2.toComp(p1);
p2[0]-5
/* Left Hand yPosition */
L1 = comp(“rappeller”).layer(“man hand lf”);
p1 = L1.toComp(L1.anchorPoint);
L2 = thisComp.layer(“rappeller”);
p2 = L2.toComp(p1);
p2[1]+5
/* Right Hand xPosition */
L1 = comp(“rappeller”).layer(“man hand rt”);
p1 = L1.toComp(L1.anchorPoint);
L2 = thisComp.layer(“rappeller”);
p2 = L2.toComp(p1);
p2[0]-5
/* Right Hand yPosition */
L1 = comp(“rappeller”).layer(“man hand rt”);
p1 = L1.toComp(L1.anchorPoint);
L2 = thisComp.layer(“rappeller”);
p2 = L2.toComp(p1);
p2[1]-8
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