Creative Communities of the World Forums

The peer to peer support community for media production professionals.

Activity Forums Adobe After Effects Dot dissolve needed!

  • Dot dissolve needed!

    Posted by Sara Haralson on October 14, 2020 at 1:55 pm

    Hello – I have an animation with a vector image composed of lots of little dots that make up a map of the world. I want to have the dots each appear randomly to compose the image, but I’m having trouble finding a dissolve that looks good… any suggestions?

    Michael Szalapski replied 5 years, 9 months ago 3 Members · 5 Replies
  • 5 Replies
  • Michael Szalapski

    October 14, 2020 at 3:42 pm

    Are these dots all the same size on a grid or are they various sizes and randomly scattered?

    Can you convert them to layers so that they’re on individual layers in After Effects?

  • Brendon Murphy

    October 14, 2020 at 3:59 pm

    If the dots are all separate layers, you can keyframe the opacities to fade them in. Then select your layers and run this script to give them a random offset so they fade in at different times:

    app.beginUndoGroup(“Random Shift”);

    var activeComp = app.project.activeItem;

    var activeLayers = activeComp.selectedLayers;

    if (activeLayers.length<1){

    alert(“Please select some layers to sequence.”);

    }else{

    var myPrompt = prompt(“Enter amount of randomness (1-10 recommended).”,””);

    for (var i = 0; i < activeLayers.length; i++) {

    var randomValue = Math.round(Math.random()*myPrompt)*activeComp.frameDuration;

    activeLayers[i].startTime = activeComp.time + randomValue;

    };

    }

    app.endUndoGroup();

  • Brendon Murphy

    October 14, 2020 at 4:09 pm

    If they are not separate layers, you can use a track matte like this:

    -Add a new solid above your dots layer

    -Add a fractal noise effect, followed by a mosaic effect.

    -crank up the contrast on your fractal noise so that you see mostly black and white boxes, no grey.

    -change the mosaic block size so the size and position of the blocks line up better with your blocks.

    -set your dot layer’s track matte to “luma matte”

    -animate the fractal noise brightness from -1500 to 1500 over several seconds (or whatever values are needed to go from fully black to fully white)

  • Sara Haralson

    October 14, 2020 at 4:43 pm

    they’re all the same size on the same grid – thanks!

  • Michael Szalapski

    October 15, 2020 at 2:04 am

    If they’re the same size on a grid, I was going to suggest either doing the Fractal Noise and Mosaic thing that Brendon suggested or using Card Wipe to do it.

    Or, if you have Form from Red Giant’s Trapcode Suite, you can get even crazier.

We use anonymous cookies to give you the best experience we can.
Our Privacy policy | GDPR Policy