• Adobe After Effects Expressions

  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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