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Moire pattern when working with 3d shape layers and lights

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Manuel Rodrigues
Moire pattern when working with 3d shape layers and lights
on Sep 25, 2014 at 8:32:13 pm

Hi There,

Im working with 3d shape layers and lights and this combination generates strange circles. A moire like pattern. Please see image below.



(Shape look 3d but is actually a fat surface)

At first I thought is was the banding problem which one can fix but adding rgb noise or something like that but this looks completely different. And it does not go away when I add RGB noise or set the project to 32 bit.

What can I do to fix this?

Thanks in advance!

Manuel


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Dave LaRonde
Re: Moire pattern when working with 3d shape layers and lights
on Sep 25, 2014 at 11:48:41 pm

How does it look if you temporarily disable the light(s)?

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


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Manuel Rodrigues
Re: Moire pattern when working with 3d shape layers and lights
on Sep 26, 2014 at 7:41:53 am
Last Edited By Manuel Rodrigues on Sep 26, 2014 at 7:57:06 am

When I disable the lights the banding is gone.

I've tried to play around with the material settings of the shape layers and the default setting don't generate this pattern but when i pay around with the diffuse, specular, shininess and metal settings they appear...

EDIT:
Its when I set cast shadows to yess and a layers are on the exact same plane that the pattern appears...

Anybody have a clue how to solve this?

Edit:

I have the z position, x and y rotation parameters of these planes hooked up separately to wiggle scripts of which i can manipulate the size and rate by sliders. Setting the z offset and x and y rotation to 0,2 results in a visible of set in position and does not solve the banding.




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Manuel Rodrigues
Re: Moire pattern when working with 3d shape layers and lights
on Sep 26, 2014 at 10:47:14 am

Resolution is at 100% and full res, fall off of the light is set no none, changing this to smooth does not resolve the problem.


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Michael Szalapski
Re: Moire pattern when working with 3d shape layers and lights
on Sep 26, 2014 at 1:58:46 pm

So, if you separate the layers in z-space, you don't get it? Separate them then.
It's an issue of it trying to cast shadows and such.

- 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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Manuel Rodrigues
Re: Moire pattern when working with 3d shape layers and lights
on Sep 26, 2014 at 2:03:24 pm

Hi Micheal,

As I tried to point out in a previous post i tried to separate them in 3d space. I already had a wiggle script attached to the z axis and could thus set all separate shape layers to a smal offset (0.2 pix) in z space. Even tried to rotate them very slightly but this did not work. Changing the angle in which te light hit the shape layers solved my problem.

Thank you for your input anyhow!

Now back to work ;)


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Manuel Rodrigues
Re: Moire pattern when working with 3d shape layers and lights
on Sep 26, 2014 at 1:59:29 pm

For future reference of other users which might encounter the same problem:

Solved by changing the angle in which the light hits the 3d shape layers..!


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Dave LaRonde
Re: Moire pattern when working with 3d shape layers and lights
on Sep 26, 2014 at 3:49:30 pm

Thanks for posting the solution.

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


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Roland R. Kahlenberg
Re: Moire pattern when working with 3d shape layers and lights
on Sep 26, 2014 at 6:40:03 pm

This is an age-old problem with the Advanced/Classic 3D Renderer which has had issues with drawing shadows. 'Solutions' include using the ray-trace renderer, switching off shadow-casting and re-positiong/re-orienting lights.

HTH
- Roland

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