• Adobe After Effects Expressions

  Applying expressions via a script – problems with variables

  Posted by Simon Björk on January 4, 2011 at 9:45 am

  Say I have the following script.

  var myComp = app.project.acitveItem;
  var myCamera = myComp.layer(1);
  var myLayer = myComp.layer(2);

  and I want to connect the rotation of my layer to the rotation of my camera. For that example,

  myLayer.rotation.expression = “thisComp.layer(“Camera 1″).transform.zRotation”;

  would work I guess. But what if I don’t know that the camera name is “Camera 1”? Is it possible to use the variable myCamera somehow? I mean, for example it would be easy if I could say: myLayer.rotation.expression = “myCamera.transform.zRotation”;. But that doesn’t work.

  So my question is if it’s possible to use variables set in scripting to your expressions?

  Dan Ebberts replied 15 years, 7 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  January 4, 2011 at 4:11 pm

  In your example, is myCamera a variable within your script that holds the name of a camera? If so, this should work:

  myLayer.rotation.expression = myCamera + “.transform.zRotation”;

  Dan

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