• Adobe After Effects Expressions

  Null z rotation expression

  Posted by James Ireland on May 27, 2009 at 4:53 pm

  Hello and I apologise if this has been answered already…

  I have a 3d null that has a layer parented to it. I need to rotate the null 90 degrees on it’s z axis. At present I’m keyframing the rotation but as I have hundreds of these null/layers to rotate Is there any way I can use an expression that activates the rotation and also does it on layer start?

  Thanks in advance for any help.

  Best,

  J

  James Ireland replied 16 years, 11 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Dan Ebberts

  May 27, 2009 at 5:25 pm

  Like this possibly:

  dur = .5; // duration of rotation

  ease(time,inPoint,inPoint+dur,0,90)

  Set the rotation duration to whatever you need.

  Dan
• 

  James Ireland

  May 27, 2009 at 5:33 pm

  Excellent, thanks again Dan.

  Also can you recommend a decent book for an expressions beginner?

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