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relational movement without the initial jump
I’ve probably just been looking at this too long. I’m sure this is a simple fix.
Example: 2 nulls in a comp positioned anywhere. Null 1 and Null 2. I have this code applied to the position of Null 1. The code tells Null 1 to move in X as Null 2 moves in Y.
However, when applying this script, Null 1 jumps its initial position X to match Null 2’s Y. I want Null 1 to keep its initial position and not jump, regardless of where Null 2 started.xPos=transform.position[0]+(thisComp.layer("Null 2").transform.position[1] - transform.position[0]);
yPos=transform.position[1];
[xPos, yPos] -
4 Replies
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On other words, I know I can write it like this:
variance = 640-thisComp.layer("Null 2").transform.position[1];
xPos=transform.position[0]+variance;
yPos=transform.position[1];
[xPos, yPos]But I’d like to not have to type the manual value of “640” in if I applied this script to something else with a different Y value.
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I think you’re after something like this:
p = thisComp.layer(“Null 2”).transform.position;
y = p[1] – p.valueAtTime(0)[1];
value + [y,0]Note that it won’t do anything until you animate Null 2.
Dan
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I had coded that too, but I was hoping to find the initial position without looking at time, as the nulls I’ll be moving are on a character rig. Oh well, I guess I’ll hand enter the initial values.
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Yeah, one way or another, you need a reference point for Null 2.
Dan
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