-
Extrapolating position from vector of two nulls
Hi,
Let’s say I’ve got two nulls (A and B) tracked into footage.
I’d like to create a third null (C), on the line that would cross A and B – at a proportional distance of say double the distance between A and B. So C would not be between A and B, but it’s position would be extrapolated.
Basically I’m trying to track something that’s offscreen…
Any help would be appreciated!
Barend
-
2 Replies
-
try this:
A = thisComp.layer(“A”).transform.position;
B = thisComp.layer(“B”).transform.position;
B + (B-A)*2Dan
-
Oh boy, that’s so simple it’s embarrassing (for me). Thanks!
Raamw3rk – digital storytelling and visual effects
Reply to this Discussion! Login or Sign Up