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Lines / Images behind shapes

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Lee Merrington
Lines / Images behind shapes
on Aug 11, 2012 at 5:39:31 pm

Hello All,

I've been playing around with AE now for about a day and I love it!... but I'm stuck trying to make lines (or an image) display in a shape but hide when outside the shape, but still keeping the background image or video.

Is this possible?

I thought that this would be done with a mask. Am I right?

I have attached an image to make it a littler easier so you know what i'm on about :D

The lines will be animated to move along the red shape from right to left, but as you can see its a strange shape and I want the green lines to hide when they are out of red shape but still keeping the image in the background (currently black)

Sorry if this doesn't make any sense :(

Thanks in advance


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