• Adobe After Effects Expressions

  Auto scale pictures proportionately to comp width/height

  Posted by Eric Hartmann on July 29, 2009 at 7:10 pm

  I’m working on a project that requires me to have several pictures on the right side of a comp, then scale up to full res.

  Basically what I need is an expression that will have any size image scale proportionately to the comp’s size.

  Can someone help me with how I need to word it in the expressions dialog box?

  Thanks!

  Dan Ebberts replied 16 years, 9 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  July 29, 2009 at 8:06 pm

  If you can drive it off one dimension, it could look like this:

  nominalCompHeight = 480;
  value * thisComp.height/nominalCompHeight

  Or, if you need independent x and y scaling, it would look like this:

  nominalCompWidth = 640;
  nominalCompHeight = 480;
  [value[0]*thisComp.width/nominalCompWidth,value[1]*thisComp.height/nominalCompHeight]

  You need to specify the nominal comp width and height values that correspond to a scale of 100%.

  Dan

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