Author Topic: how to deal with 2-sided faces  (Read 2752 times)

Nikodemus

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how to deal with 2-sided faces
« on: March 07, 2008, 08:54:32 pm »
I'm wondering what would be wiser to use:

12 faces is less than 16, but the 16 faces mesh looks a lot more real. It is impossible to look from certain angles that some faces are invisible.



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Karyuu

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Re: how to deal with 2-sided faces
« Reply #1 on: March 07, 2008, 09:00:23 pm »
Double-sided faces were a big no-no several months ago. Unless that changed with CS, you'd have to use two separate polygons for a flat mesh that's meant to be two-sided.
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Nikodemus

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Re: how to deal with 2-sided faces
« Reply #2 on: March 07, 2008, 09:27:40 pm »
Yeah, duplicate, flip normals.
My question was not this, though ;)



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Karyuu

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Re: how to deal with 2-sided faces
« Reply #3 on: March 07, 2008, 10:22:21 pm »
Then it doesn't really matter, I think :] Is the difference with 16 faces something that you will recognize in the final mesh? And moreover, is it a significant difference? If not, then go for the lower number. With that shot alone it's hard for me to answer, since I don't know what the model is supposed to be.
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Induane

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Re: how to deal with 2-sided faces
« Reply #4 on: March 07, 2008, 10:33:15 pm »
Also if you do the 12 method its not a closed mesh which can also be sub optimal, especially for the dynavis culler.  There are times where a few extra polies can actually mean better performance because other things get cut from rendering due to proper culling.

Lanarel

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Re: how to deal with 2-sided faces
« Reply #5 on: March 07, 2008, 10:43:09 pm »
Is the 16 face version as shown? Because then it is even less closed than the 12 face one.

Nikodemus

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Re: how to deal with 2-sided faces
« Reply #6 on: March 07, 2008, 10:48:20 pm »
Also if you do the 12 method its not a closed mesh which can also be sub optimal, especially for the dynavis culler.  There are times where a few extra polies can actually mean better performance because other things get cut from rendering due to proper culling.
What a poetry* ;D reminds me it would be good to find this all out someday ;) Maybe sooner than i expect, hm.

Karyuu, Its a mater of performance, then. I'm going to use similiar elements like 200 times for the whole, so it is a matter of 80 extra faces or not for a big 9000 faces structure.

Lanarel, use your imagination :)

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« Last Edit: March 09, 2008, 12:12:44 am by Nikodemus »



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