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How do I use a gradient as an opacity map?

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Nender
How do I use a gradient as an opacity map?
on Apr 24, 2007 at 4:34:05 pm

I want to use a gradient as a map for opacity for an object, a very simple thing to do in other programs, but I am restricted to motion. I have the gradient and I have the object, I want white to equal transparent and black to equal opaque. Can anyone tell me how to do this?

Thanks!


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specialcase
Re: How do I use a gradient as an opacity map?
on Apr 24, 2007 at 9:07:24 pm

Heya,

You'll want to use the gradient as the source for an Image Mask, probably based on the gradient's luminance. There's an older post describing the process here: http://forums.creativecow.net/readpost/170/856786?

Good luck with you project!


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Nender
Re: How do I use a gradient as an opacity map?
on Apr 25, 2007 at 2:28:23 pm

Thanks!


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