• Adobe After Effects Expressions

  Expression for opposing action

  Posted by Rob Hindley on April 13, 2008 at 10:06 pm

  I am wanting to slide a layer in one direction in one axis and want to link another layer to slide the opposite direction in the same action.

  How is this written?

  Dan Ebberts

  

  replied 18 years, 5 months ago 3 Members · 4 Replies
• 4 Replies

• 

  Marc Leonard

  April 14, 2008 at 3:26 am

  *-1
  i do believe
• 

  Dan Ebberts

  April 14, 2008 at 6:31 pm

  There are several ways to do this, the simplest is probably to control the x positon (for example) of both layers with a slider control. One layer’s position property would get an expression like this:

  value + [thisComp.layer(“control”).effect(“Slider Control”)(“Slider”),0]

  The other would get this:

  value – [thisComp.layer(“control”).effect(“Slider Control”)(“Slider”),0]

  Dan
• 

  Rob Hindley

  April 15, 2008 at 12:58 am

  Thanks Dan. Works like a charm across the x axis.

  How do I get it just to move in the y axis?

  Gribble
  ::: Time flies like an arrow but fruit flies like a banana :::
• 

  Dan Ebberts

  April 15, 2008 at 1:26 am

  Like this:

  value + [0, thisComp.layer(“control”).effect(“Slider Control”)(“Slider”)]

  and this:

  value – [0, thisComp.layer(“control”).effect(“Slider Control”)(“Slider”)]

  Dan

Reply to this Discussion! Login or Sign Up