• Adobe After Effects Expressions

  Randomly fade words (in multiline text) in & out over time

  Posted by Ze’ev Gilad on April 2, 2012 at 8:36 pm

  This is driving me nuts. I have a block of text, and need the words to randomly fade in & out over time.
  I tried various range selectors; fading IN randomly was easy, but getting them to fade in AND out has proved difficult.

  The closest thing I found was this bizarre tip from Adobe – adding an Expressions Selector with this code:

  seedRandom(textIndex);
wiggle(.1, 350);

  But this completely baffles me! Isn’t seedRandom just for reseeding the random generator?? Why does it need textIndex as input? If I change it to ANYTHING else, ALL the words are faded.

  The problem is I want to change the random order of what I’m getting! But I can’t change the random seed.

  Ze’ev Gilad replied 14 years, 5 months ago 1 Member · 0 Replies
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