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Strange triangulation problem
Posted: Sat May 28, 2011 10:08 am
by SebastianJW
When I import a some OBJs the triangle's normals look 'rough.' I have enabled smooth but no affect.
I'm sure this topic has been discussed before so any redirections will be helpfull.
I have attached an example screen.
Seb
Re: Strange triangulation problem
Posted: Sat May 28, 2011 1:01 pm
by steveps3
Looks like you have normals that are facing the wrong direction. Make sure that they are all pointing outward.
Re: Strange triangulation problem
Posted: Sat May 28, 2011 1:47 pm
by Zay
Maybe a scaling problem ?
Re: Strange triangulation problem
Posted: Sat May 28, 2011 4:41 pm
by ttaberna
Zay wrote:Maybe a scaling problem ?
MosDef
Re: Strange triangulation problem
Posted: Sat May 28, 2011 6:46 pm
by SebastianJW
And the correct answer goes to......... Zay!
The render when model is scaled down by 90%.
Cheers!
Re: Strange triangulation problem
Posted: Sat May 28, 2011 7:24 pm
by steveps3
Looks like you still have those dodgy normals.
Re: Strange triangulation problem
Posted: Sat May 28, 2011 11:28 pm
by SebastianJW
It's a low poly version - if I divide it it'll look neater.
I didn't intend to be rude, infact my only initial thoughts were that it was a normal problem aswell but if I unified, flipped, or made any changes to normals the results were the same.
When I imported the model into my 3d app it was massive (10x standard grid size) thus the problem.
Re: Strange triangulation problem
Posted: Sun May 29, 2011 7:08 am
by abstrax
SebastianJW wrote:It's a low poly version - if I divide it it'll look neater.
I didn't intend to be rude, infact my only initial thoughts were that it was a normal problem aswell but if I unified, flipped, or made any changes to normals the results were the same.
When I imported the model into my 3d app it was massive (10x standard grid size) thus the problem.
Try playing with the ray epsilon, to avoid shadow artifacts at the terminators.
Cheers,
Marcus