• Adobe After Effects Expressions

  ref rotation

  Posted by Alex Harding on February 1, 2007 at 4:51 pm

  hi there
  is it possible to reference the rotation value of a layer without taking into account the ‘multiplier’ value?

  ie

  my rotation (its self governed by an expression) resolves its self to ” -3 x 0.0 ”

  however, another expression which is dependent on this value reaching 0, reads this as -1080
  is there a way to only reference the rotation out of 360, rather than than the accumulating value?

  cheers,

  Alex

  Mike Clasby replied 19 years, 3 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Mike Clasby

  February 1, 2007 at 7:00 pm

  It would be nice to see the expression you’re working on, but methinks you need to use “%” the modulus operator, it gives the remainder.

  In this expression, a Blue Solid’s rotation is the same as the Medium Red Solid’s rotation (just by pickwhipping the Blue Solid’s rotation to the Medium Red Solid’s rotation.

  thisComp.layer(“Medium Red Solid 1”).rotation

  So “-3 x 0.0” on the Red gives “-3 x 0.0” on the Blue.

  But if you add %360 to the expression you get what you are after:

  thisComp.layer(“Medium Red Solid 1”).rotation%360

  The 360 tells it what to divide by, and then gives the remainder.

  So “-3 x 0.0” on the Red gives “0 x 0.0) on the Blue.

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