• Adobe After Effects Expressions

  rotate number of degrees in specified time

  Posted by Riccardo Sinti on May 27, 2009 at 7:52 pm

  this must be so simple but I can’t figure it out.
  how do I write an expression to tell a layer to rotate, for example, 45 degrees in 2 seconds.
  I would like to do it in a way that uses a variable for time and rotation.
  thanks

  Dan Ebberts replied 17 years, 3 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Riccardo Sinti

  May 27, 2009 at 7:58 pm

  I meant to say that the rotation should stop at 45 degrees, not continue to rotate 45 degrees for very 2 secs.

  Thank You
• 

  Dan Ebberts

  May 27, 2009 at 8:02 pm

  This should rotate your layer 45 degrees over 2 seconds, starting from the layer’s in point:

  rotationDuration = 2;
  rotationAmount = 45;
  rotationStart = inPoint;

  linear(time,rotationStart,rotationStart+rotationDuration,value,value+rotationAmount)

  If you want a different start time, just edit the third line.

  Dan

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