• Adobe After Effects Expressions

  2d lookAt that ‘flips’ ?

  Posted by Sergio Juyak on May 18, 2012 at 8:12 pm

  I found a 2d lookAt expression here on CreativeCow, and i’m using it with shape layers to make a simple triangle. The problem is when I animate the triangle corners. When one corner crosses its opposing side, i need the lookAt expression to ‘flip’ or rotate 180 degrees. I don’t know how to do this. Below is a link to my project file. If you preview you see that, as one corner animates, my triangle disappears. =/

  https://dl.dropbox.com/u/60060557/poly.aep

  Dan Fredley replied 14 years, 2 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Sergio Juyak

  May 19, 2012 at 7:25 pm

  
  Here’s a pic of what’s going on. My fill disappears when the red markers crosses the side formed by the two other markers.
• 

  Dan Fredley

  May 24, 2012 at 4:05 pm

  Kind of convoluted, but try this out:

  poly_fix.aep

  It might be better to use one of the following scripts:

  TrackerViz
  Tracker2Mask

  Or this:

  https://forums.creativecow.net/thread/2/1016514

  Dan Fredley

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