• Adobe After Effects

  Masking question – link to file included

  Posted by Paul Rijkaard on May 4, 2016 at 4:46 pm

  Hi

  I am attempting to create an animation using a noise field via the cell pattern effect.

  The animation will consist of geometrical shapes which will be masks for various colour patterns.

  how can I use the random cell pattern to make the edge of the shape oscillate slightly?
  i.e. the shape consists of lots of ‘random dots’ but has a hard edge, how can I isolate the edge so that it is ‘fuzzed’ as part of the effect
  and the edge itself appears to approximate a circle rather than have a hard edge.
  to do this I imagine the edge of the circle needs to be isolated.

  many thanks in advance

  here is a link to the file (AFX cc 2014 file)

  https://www.dropbox.com/sh/d7paomdmyktc21y/AADPBGrJaylwq9AbYsjHEnIRa?dl=0

  Kalleheikki Kannisto replied 10 years ago 2 Members · 3 Replies
• 3 Replies

• 

  Kalleheikki Kannisto

  May 5, 2016 at 8:14 am

  I would do this with cc ball action on a transparent background.

  Like this:

  10056_test1a.aep.zip
• 

  Paul Rijkaard

  May 5, 2016 at 11:42 am

  Very helpful thank you

  can you offer any advice using expressions to add further randomness to the movement of the circles.

  I believe that the cell pattern effect is a random distributionon a frame by frame basis, wheras the circles in cc ball appear to move on a path or a walk.

  many thanks

  Paul
• 

  Kalleheikki Kannisto

  May 5, 2016 at 2:02 pm

  They both move in a wiggle fashion (kinda like following a path), with the difference that Ball action has options for rotation and twist. It doesn’t look like they are using the same position wiggle formula, but the result is pretty similar.

  If you want a random placement on each frame, you can use the expression

  random(10000)

  instead of the current

  time*100

  for the instability state.

Reply to this Discussion! Login or Sign Up