• Adobe After Effects Expressions

  Wiggle uniform scale of a flipped/non squared ratio layer

  Posted by Tal Arbiv on December 3, 2016 at 4:02 pm

  I want to wiggle a layer with scale aspect like -23,111 or 23,111 and wiggle keeping the ratio. (like if it was parented to a null that is wiggled)

  of course when i use the [0] on both axis the result is squared. and if i use 2 wiggles i dont get synced values.

  i guess i need to someway multiply the wiggle result with the scale aspect ratio, but what how can i get the per axis value of that ratio? if there is such thing…

  thanks.

  w = wiggle(1,5);
x = transform.scale[0]/100;
y = transform.scale[1]/100;
[w[0]*x,w[0]*y]

  Tal Arbiv replied 9 years, 9 months ago 2 Members · 4 Replies
• 4 Replies

• 

  Xavier Gomez

  December 3, 2016 at 10:54 pm

  Like this?

  w = wiggle(1,5);
[w[0], value[1] + (w[0]-value[0])];

  Xavier
• 

  Xavier Gomez

  December 3, 2016 at 11:08 pm

  Hum, seems that i missread the question.
  The above wiggles by the same amount to scale[0] and scale[1], but does not preserve the ratio.
  This should be better:

  w = wiggle(1,5);
  if (value[0]===0){[0, w[1]];}
  else{[w[0], w[0]*value[1]/value[0]];};
• 

  Tal Arbiv

  December 3, 2016 at 11:13 pm

  Thanks a lot, but no, this changes the ratio.

  lets say you have a layer and its scale is something like [-30 , 100] if you parent it to a null you can wiggle it uniformly with [w[0],w[0]] .
  i’m looking for that same result with a single expression without using a null….
• 

  Tal Arbiv

  December 3, 2016 at 11:14 pm

  YES! great!
  that seem to work.
  thank you!

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