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write on effect over a 90 degree angle

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TImi Boosewrite on effect over a 90 degree angle
by on Aug 18, 2014 at 11:06:04 pm

what is the proper way to do this - I'm animating light rays bouncing off a window.

When there is an angle, it seems to cause a problem - Do you put each line that makes the angle on a separate layer and do a separate write-on effect for each one? Or do it with a mask.

I've been messing around with these ideas - wondering how you professionals would do it

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Dave LaRondeRe: write on effect over a 90 degree angle
by on Aug 20, 2014 at 3:36:10 pm

In 2D, it's pretty simple: make a mask that contains a 90-degree angle. Double-click on it to bring up the Free Transform tool to tweak the mask's rotation & scale. When you're happy, the Mask Path becomes the Brush Position for Write-On.

Oops! Forgot to mention that the mask & the tweaks should take place on a solid in the same dimensions & pixel aspect ratio as the comp. You can fool with the solid's opacity to make the mask visisble over other layers for reference. Hopefully, your comp is in square pixels, because it's easier in the long run.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA

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