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Activity Forums Adobe After Effects Wiggle between two exact values

  • Wiggle between two exact values

    Posted by Mario Mendez on November 2, 2006 at 5:42 pm

    How could I go about wiggling between two exact values. I want to create a sort of strobe effect by wiggling the opacity of a layer but I only want to wiggle between 0 and 100. I do not want to see any of the transparent middle values. Anyone have any ideas?

    Thanks.

    Editors save hundreds of Hollywood jobs every week.

    Mike Clasby replied 19 years, 10 months ago 4 Members · 4 Replies
  • 4 Replies
  • Julian Sixx

    November 2, 2006 at 5:46 pm

    Hi

    //start
    blinkSpeed =2;
    lowOpacity =0;
    highOpacity = 100;
    if(Math.sin(blinkSpeed * time * Math.PI *2) < 0) lowOpacity else highOpacity; //end

  • Dan Ebberts

    November 2, 2006 at 6:02 pm

    Or, if you want the randomness of wiggle, you could set opacity to 50 and then use an expression like this:

    if (wiggle(3,50) < 50) 0 else 100 Dan

  • Mario Mendez

    November 2, 2006 at 6:15 pm

    Thanks it works well.

    Editors save hundreds of Hollywood jobs every week.

  • Mike Clasby

    November 2, 2006 at 6:39 pm

    Thanks, Dan, very handy for us random-types.

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