• Adobe After Effects Expressions

  Extract scale values from matrix (toWorldVec)?

  Posted by Simon Bjork on November 12, 2020 at 4:36 pm

  I have a 3×3 matrix (generated from layer.toWorldVec) and I would like to extract scale values from this matrix. Is this possible? I found some expression to extract rotation values which seems to work well, but I haven’t found a way for scale.

  // 3x3 matrix
  L = thisComp.layer("Dark Gray Solid 1");
  u = L.toWorldVec([1,0,0]);
  v = L.toWorldVec([0,1,0]);
  w = L.toWorldVec([0,0,1]);
  [u,v,w]

  * The matrix can also be a matrix coming from another application but in the same format.

  Thanks for the help :).

  Simon Bjork replied 5 years, 9 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Dan Ebberts

  November 12, 2020 at 11:51 pm

  Try this:

  [100/length(u),100/length(v),100/length(w)]
  
• 

  Simon Bjork

  November 13, 2020 at 9:51 am

  Thanks a lot Dan, that seems to work perfectly!

  * I haven’t asked a question here in 10 years, and from what I remember you helped me that last time as well. Simply amazing work!

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