Help in creating a Moire effect in AE

[Todd Kopriva]

I’ve made some neat Moire patterns while playing with shape layers, such as when setting parameters for the polystar shape type to extreme values or using the Repeater to make a lot of overlapping shapes with small offsets.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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[John Reynolds]

That’s cool Todd. Do you have any tutorials on it? Or somewhere I can learn and get instructions on how to do my own?

John

[Todd Kopriva]

There’s nothing fancy to it. Moire patterns emerge from the intersection of large numbers of thin lines. You can create an animated Moire pattern yourself by creating any two sets of thin curves or lines, overlapping them, and then animating the position of one of them.

(Of course, the Moire pattern artifacts that we all know and hate come from the intersections of the lines in, say, a tie and the many thin scanlines that make up a television image.)

I think that you’ll find that using the Repeater or otherwise creating overlapping shape layers is an easy and fun way to experiment with this yourself.

I just made two copies of a star with several hundred points each and a thin (one-pixel) stroke, so I basically ended up with two disks made up of radiating lines. Then I animated one to move past the other.

Here’s a screen-grab of the result:

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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[David Bogie]

A quick google for MOIRE will return several concise (and over the top techno geeky) explanations of the phenomenon sometimes known as frequency interference. A little bit of knowledge can help you replicate and expand on Todd’s experience with predictable results.

bogiesan