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Activity Forums Adobe After Effects Expressions paralax, with nulls

  • paralax, with nulls

    Posted by Anthony Dupsta on December 19, 2007 at 12:01 am

    I have three layers parented to a null.
    I want each layer to move at diff speeds according to the master Null.
    For instance: Layer 2 would move half the speed of the null. (Position *.5)

    I have done this before for specific layers , but not using child parented to a Master Null.

    I am close. Please fill the blank.

    Anthony Dupsta replied 18 years, 4 months ago 2 Members · 2 Replies
  • 2 Replies
  • Filip Vandueren

    December 19, 2007 at 12:27 am

    You want to have the difference in position the parent has moved, not the actual position, because the child has to move relative to it’s parent.
    If that makes sence ?

    Something like this for the child:

    value + ( parent.position – parent.position.valueAtTime(0) )*0.5;

  • Anthony Dupsta

    December 19, 2007 at 1:05 am

    What can I say! You are very talented guy!
    Thank you very much for sharing you skillz.
    I can manage many layers now being drivin from one Parent instead of copying and pasting key frames for every layer.

    Thank you again, much appreciated, you hit it on the head!

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