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Aspect ratio in 3D compositions

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Daniel PaniaguaAspect ratio in 3D compositions
by on Feb 25, 2010 at 2:18:26 am

Open AE CS4 and created a 3d composition to generate a cube of solid rectangular (360x288 px) mode PAL1 / DV (720x576), The problem is that I can not match Las 6 sides to a cube is formed tightly closed,Although all sides have the same size. Delivery of a solid of 360x288 then doubled,Change their attachment points at z = 288 for the first z =- 288 for the second.With that in the separated 576px.Then duplicate one of them (side 3) and broken at y = 90 °.It double again and so broken in y =- 90 º.The problem is that when generating the other side (rotated at x = 90 º and -90 º) do not match their size and the cube side is left with some different size, I understand that this issue is aspect ratio.Is there a solution or failure of the program is?

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Joey ForemanRe: Aspect ratio in 3D compositions
by on Feb 25, 2010 at 5:44:09 am

Could you post a screen grap of your entire AE UI, showing all layers?

Have you tried changing the layers' Transfer Modes to Alpha Add?

Are you using Collapse Transformations?

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Dave LaRondeRe: Aspect ratio in 3D compositions
by on Feb 25, 2010 at 3:50:36 pm

You are experiencing difficulty with pixel aspect ratios. If you use square pixels when you create the solids, you can then make them 288x288, for example. These solids will remain square no matter how they are rotated in 3D space.

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

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