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Ludovic29924883eoep
Known Participant
May 16, 2024
Question

Delaying animation with expression controls instead of keyframes

  • May 16, 2024
  • 2 replies
  • 710 views

Hello,
To get a slight delay in my animation on each duplicated groups, i made this simple expression on a trim path :

i=(thisProperty.propertyGroup(2).propertyGroup(1).propertyIndex)-1;
value + valueAtTime(time+i/10)

 

But i just want only one set of keyframes to control every groups. 

if i replace the "value" by a slider control for example, the delay no longer works. I don't know why.

Any idea? Thanks

    This topic has been closed for replies.

    2 replies

    Mylenium
    Mylenium
    Legend
    May 16, 2024

    Why would you replace the "value" with the slider? This makes no sense. You need to manipulate the time inside the valueAtTime() function. Of course you may need a ton of extra code with linear() functions if you need exact values instead of the oens the function gives you, but I think you simply misunderstand the basics.

     

    Mylenium

    L
    Ludovic29924883eoepAuthor
    Known Participant
    May 17, 2024

    Because i want to duplicate the animation on a great amount of sub groups and be able to edit theire animation interpolation with 2 keyframes instead of hundreds. the linear doesn't give me this flexibility of editing though.

    Dan Ebberts
    Community Expert
    Dan EbbertsCommunity Expert
    Community Expert
    May 16, 2024

    Posting a screen capture of your timeline would help.

    L
    Ludovic29924883eoepAuthor
    Known Participant
    May 17, 2024

    there it is

    Dan Ebberts
    Community Expert
    Dan EbbertsCommunity Expert
    Community Expert
    May 17, 2024

    I think it will be something like this:

    delay = .1;
n = thisProperty.propertyGroup(4).numProperties;
myIndex = thisProperty.propertyGroup(3).propertyIndex;
diff = n - myIndex;
myDelay = diff*delay;
s = effect("Slider Control")("Slider");
s.valueAtTime(time - myDelay)

    If you wanted it to go top to bottom (instead of bottom to top), it would be like this:

    delay = .1;
myIndex = thisProperty.propertyGroup(3).propertyIndex;
myDelay = (myIndex-1)*delay;
s = effect("Slider Control")("Slider");
s.valueAtTime(time - myDelay)
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