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Activity Forums Adobe After Effects Expressions auto-animating speed control on a 2 dimensional parameter

  • auto-animating speed control on a 2 dimensional parameter

    Posted by Dirk De jong on September 28, 2017 at 8:45 pm

    the other day Dan kindly pointed me to a way to auto animate a parameter using an expression like this

    spd = (500);
    value + time*spd

    Now I’m trying to use this idea applied to the XY coordinate param of a filter and I’d like to be able to control both the X and the Y separately (a filter XY coordinate cannot simply be broken into separate dimensions like the Position of a layer can or I would just do that…)

    I know how to set each part of such a 2 dimensional coordinate param separately with an expression like this

    tempX = effect(“Slider Control”)(“Slider”), tempY = effect(“Slider Control 2”)(“Slider”);
    [tempX, tempY]

    and although I’ve tried several things in a trial and error attempt to do it, somehow a solution for doing it with the auto animation and speed control is eluding me (and now it’s getting late in the day : )….

    any hints much appreciated – thanks

    Dan Ebberts
    replied 8 years, 7 months ago
    2 Members · 1 Reply
  • 1 Reply
  • Dan Ebberts

    September 28, 2017 at 9:22 pm

    Something like this, probably:

    spdX = 500;
    spdY = 200;
    value + [spdX,spdY]*time

    Dan

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