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Activity Forums Adobe After Effects Expressions Wiggling Fractal Noise

  • Wiggling Fractal Noise

    Posted by Y. Bar on December 22, 2009 at 6:21 am

    Hello,

    I would like to wiggle the “offset turbulence” property of my fractal noise effect, and to do this every 3rd frame.

    What is the correct expression for this?

    Thank you ,
    Y.

    Dan Ebberts replied 16 years, 7 months ago 2 Members · 3 Replies
  • 3 Replies
  • Dan Ebberts

    December 22, 2009 at 8:19 pm

    I’m not sure this does what you want, but it seems to do what you’re asking for:

    f = timeToFrames();
    if (f%3 == 0) wiggle(1,100) else value

    Dan

  • Y. Bar

    December 23, 2009 at 7:57 am

    Thanks for replying..

    I will try to be clearer –
    I have an animation layer (image sequence) which is time streched to 300%. So the image in my animation changes every 3 frames.
    Now the Fractal Noise effect which I added to this animation changes every single frame , due to the Wiggle Expression which controls its Offset Turbulence property.
    I would like this property to change with the Wiggle effect, but only when the image itself changes- meaning every 3 frames.

    I appreciate any help in this,
    Y.

  • Dan Ebberts

    December 23, 2009 at 3:18 pm

    Ah, something like this maybe:

    t = framesToTime(Math.floor(timeToFrames()/3)*3);
    wiggle(1,100,.5,1,t)

    Dan

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