[Justin Shewell]

So, an update…

I created one comp with 12 copies of an image (a person icon) in it. I added a null object and put in several slider controls: one slider control for each copy of the image that controls the speed at which it falls, and then one slider that controls the Y position (i.e. how far the objects fall). For each “speed” slider, I set it to generate a random number using the following expression:

seedRandom(index, true); // I don't want the value to change each frame
gaussRandom(1, 3);

It works really well for that single comp. However, I need 96 moving objects, so I duplicated the comp and moved it over slightly to offset the X position. When I ram preview it, I get pairs of object moving at the same speed. What is the best way to get each instance of the comp to behave differently?

[Justin Shewell]

With an animated mask on the black text layer, how does the text disappear? Once the eraser passes over it, it shows again because the eraser image is behind the text and on a transparent background. I was using the white layer to hide the text against a white background after the eraser passes behind it.

It is supposed to look like someone is writing on the reverse side of the screen and then erasing it, so the eraser is behind the text, not in front.

[Justin Shewell]

I figured it out. Thank you.

I put an animated mask on the layer with the white text and matched it position with the eraser image. It only worked when I set the track matte of the original text layer to be luma inverted of the white text layer.

[Justin Shewell]

Would the animated mask would hide the eraser image below the text as well? I need the eraser to show, but the text to go transparent as the eraser moves across the screen.