• Adobe After Effects Expressions

  2D null's position controlling 3D head rotation: how to set toWorld, fromWorld?

  Posted by Cesar Siena on March 1, 2021 at 12:07 am

  Hello! The 3D head layer is inside Comp1 and has X, Y and Z rotation that will be controlled by position and rotation of a 2D null in Comp2:

  3D head in Comp1 2D null in Comp2
  X rotation ———————- Y position
  Y rotation ———————– X position
  Z rotation ———————- rotation

  When I pickwhip each left item to its correspondent item at rigth, the 3D head turns to a strange position. The 2D null WORKS, but in an akward way.

  I suspect it would need toWord or fromWord expressions, because the head and the null are in different comps and one is 3D, the other, 2D. But when I send toComp or toWorld any of those properties, i.e, the transform.yPosition, I get the error:

  “First argument to toComp must be a vector of length 2 or 3”

  QUESTION
  How can I make those 3 connections?

  Thanks.

  Cesar Siena replied 5 years, 2 months ago 1 Member · 0 Replies
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