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View Full Version : Proceedural Shield Mark Operator Artifacting


supremepizza
03-16-2007, 01:51 AM
The Title of the post says it all. I have a proceedural shield setup and I'm using a mark operator. It's an output map in the self-illum and a radial-gradient in the opacity. The shield is a raytrace. It only artifacts for about 15-25 degrees. I'm not sure if it is a problem with the angle, the combination of materials, the mark operator, a raytrace issue. I've tried to debug this several ways and haven't come up with a solution.

This is fairly time sensitive so if you know anyone that can help with this I'd appreciate the help.

Thanks,
Bill

Edit: Screenshot might help.:) Attached below.

Gravey
03-16-2007, 04:51 AM
i'm guessing you've been following this tutorial but in case you havn't, here's the link:

http://www.3d-palace.com/xenomorphic/education/doc_auto_shield_generator.htm

It describes exactly the effect you're trying to achieve

OlegB
03-16-2007, 09:20 AM
Did you try to increase the surface offset value in the Shape Mark operator?

Thanks,
Oleg B.

supremepizza
03-17-2007, 07:58 PM
Gravey:
Nope didn't use any tutorials. Thanks though I'll check it out when I have some time.

Oleg:
Thanks for the reply. I did try increasing the offset without any changing the artifacting. I'll attempt to increase it more just for the offending frames since if I increase it too much it is noticable from other angles. This may be a case where I'll need to keyframe the increased offset on offending frames. I thought this may be a case of the mark intersecting the mesh as well. Thanks for confirming my suspicions, it's hard to tell with the opacity of the shield mesh.

Side question: Is there a way to increase the mesh density of the mark operator to conform better and cause fewer problems?

Gravey
03-17-2007, 11:43 PM
i haven't used shape mark with box intersection for a while but i believe the only way to increase its mesh density is to increase the mesh density of the intersecting object since that's where the shape mark gets its shape from.

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03-17-2007, 11:43 PM
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