• Adobe After Effects Expressions

  Position property expression for animated text.

  Posted by Liviu Ispasoiu on May 23, 2019 at 7:41 pm

  Hi, I´m struggling with an expression for a text animation and I need some help.
  I created a mask where the size is automatically given by the length of the text. I used a range selector to animate the position of the characters and in the first phase, I want it to be automatically positioned to the left for a distance equal to the length of the text /mask, symmetrical in some way. For any text adjustment, it must work symmetrically against the mask “position”. Hope it makes sense. Any ideas?

  

  this is the expression I used
  Rectangle Path-> Size
  var titleLayer = thisComp.layer("Lorem ipsum dolor");
var boxWidth = titleLayer.sourceRectAtTime(0,true).width;
var boxHeight = titleLayer.sourceRectAtTime(0,time).height;
[boxWidth, boxHeight]

  Rectangle Path – >Position
  var titleLayer = thisComp.layer("Lorem ipsum dolor");
var boxWidth = titleLayer.sourceRectAtTime(0,true).width/2;
var boxHeight = titleLayer.sourceRectAtTime(0,true).height/2;
var boxX = titleLayer.sourceRectAtTime(0,true).left;
var boxY = titleLayer.sourceRectAtTime(0,true).top;
[boxWidth + boxX, boxHeight + boxY]

  Transform Rectangle -> Anchor Point
  (linked to the position property of the characters in Range Selector Animator)
  thisComp.layer(“Lorem ipsum dolor”).text.animator("Animator 1").property.position;

  Position in Range Selector Animation
  (???) here I got stuck

  Thank you!

  Liviu Ispasoiu replied 7 years, 2 months ago 1 Member · 1 Reply
• 1 Reply

• 

  Liviu Ispasoiu

  May 25, 2019 at 6:55 pm

  Actually, I solved it. For the position property in range selector animation I used:
  var boxWidth = thisLayer.sourceRectAtTime(time).width;
[-boxWidth,0]
  and no need to link the Anchor Point to the position property of the characters in Range Selector Animator.
  The only thing I found there is a small offset position of characters like A, V.. vs. B, L, P …. but that’s another story. Anyway, thank you!

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