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unwanted reverse image

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Brandon Burleyunwanted reverse image
by on Jan 12, 2010 at 2:41:54 am

I'm creating a scene with sales tags falling like snowflakes, but I don't want the back side of each 3d object to be the reverse image. Is there a quick and easy to display the normal image on the front and back of each tag?

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Michael SzalapskiRe: unwanted reverse image
by on Jan 12, 2010 at 3:45:39 pm

How have you created the tags? Are they a particle effect or layers animated individually?

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

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Dave LaRondeRe: unwanted reverse image
by on Jan 12, 2010 at 4:27:02 pm

[Brandon Burley] "Is there a quick and easy to display the normal image on the front and back of each tag?"

Nope. But there IS a sort-of fast 'n easy way. I will assume these price tags are the exact same size & color, or at least that you have 2 or 3 different sizes & colors. For each tag that is supposed to be basically the same, do this:
  • Make a tag back, and a bunch of tag fronts.
  • In a 3D comp, drag a tag back into the precise center of the comp. Rotate it 180 degrees on the y axis if necessary (printing on the back, y'know) and change its z-position to +0.5.
  • Duplicate the layer, change the TOP layer's y rotation to 0 degrees, and its z-position to -0.5.
  • Using the replace footage command, replace the top layer with a tag front.
  • Duplicate the comp as many times as necessary for the remaining tag fronts.
  • Use the Replace footage command on the duplicated comps to replace the tag front with new ones.

Using the Collapse Transformations switch in the main comp for each 3D layer, these nested tag comps become 3D objects, complete with front and back.

Remember: you're using AE to create 3D objects, and five years ago, people would have given their eye teeth to do this. You DON'T have to go to a far more expensive 3D application. You can do it all in AE. It's just that there's no magic bullet to do this kind of stuff in AE.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA

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