• Adobe After Effects Expressions

  Animate a “parent” with checkbox

  Posted by Ricardo Martins on July 25, 2014 at 6:55 pm

  Hi there, I’m animationg a mouse draging a bunch of stuff on screen.

  So I was wondering if I could just animate the mouse and make a checkbox expression or anything like it with a that would “parent” the icons to be dragged and droped.

  I left this “.toComp” because the there’s a null parented to the mouse and other stuff.

  My problem now is that when I uncheck the checkbox the icons return to their previous position, so I was wondering if theres a way to update it’s position when I turn the check down.

  Or is there a smarter way to do this?

  if (effect("CheckFinal")("Checkbox") == 1) thisComp.layer("arrow").toComp([0,0,0]) else transform.position

  Ricardo Martins replied 12 years ago 2 Members · 2 Replies
• 2 Replies

• 

  Dan Ebberts

  July 25, 2014 at 7:20 pm

  It’s probably going to be something like this:

  
cb = effect("CheckFinal")("Checkbox");
if (cb.value == 1){
thisComp.layer("arrow").toComp([0,0,0])
}else if (cb.numKeys > 0){
n = 0;
n = cb.nearestKey(time).index;
if (cb.key(n).time > time) n--;
if (n > 1){
thisComp.layer("arrow").toComp([0,0,0],cb.key(n).time)
}else{
value;
}
}else
value


  Dan
• 

  Ricardo Martins

  July 25, 2014 at 8:24 pm

  Thanks Dan, that worked like a charm!

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