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Subdivision question

Posted: Wed Jul 11, 2012 7:19 pm
by cotty
Hi,

I modeled a wine glass for another forum and wonder why the glass is not as smooth as expected. I used subdivision up to 6 but didn't get a smooth result. Any ideas what I am doing wrong in this case?
Thanky for your help!
Cotty
comparison.jpg

Re: Subdivision question

Posted: Wed Jul 11, 2012 8:09 pm
by Pikadili89
You could smooth it with increasing segments of the circle you used for path. Thats the modeling solution, I am not sure how to do it with just indigo. Hope I helped a lil bit :)

Re: Subdivision question

Posted: Wed Jul 11, 2012 9:35 pm
by OnoSendai
You could also try modelling the wine glass with quads. Should help.

Re: Subdivision question

Posted: Wed Jul 11, 2012 11:36 pm
by lycium
I don't think SkIndigo exports quads unfortunately :oops:

Re: Subdivision question

Posted: Thu Jul 12, 2012 12:29 am
by CTZn
To go a bit into details about the issue with triangles here, is that some vertices have 4 incoming edges when others got 8. This creates a tension you will not get rid of without editing the geometry.

It could be triangles if all diagonals had the same direction.

Re: Subdivision question

Posted: Thu Jul 12, 2012 7:33 am
by cotty
lycium wrote:I don't think SkIndigo exports quads unfortunately :oops:
There are some possibilities, but I used Artisan for subdivision and therefore have no influence on the triangles (maybe Whaat have an idea?!)
CTZn wrote:To go a bit into details about the issue with triangles here, is that some vertices have 4 incoming edges when others got 8. This creates a tension you will not get rid of without editing the geometry.
It could be triangles if all diagonals had the same direction.
I tried some different subdivisions but until now I was not able to pruduce an equal-incoming-edges version (e.g. 6/4 edges):
mesh_02.jpg
I wonder why I didn't noticed this problem before...
(maybe Whaat have an idea?!)

Re: Subdivision question

Posted: Fri Jul 13, 2012 8:20 am
by cotty
New version with quad mesh...
Thank you for the helpful hints!
wine_collage_new.jpg

Re: Subdivision question

Posted: Fri Jul 13, 2012 8:26 am
by OnoSendai
Sweet render!
To the gallery pls!

Re: Subdivision question

Posted: Fri Jul 13, 2012 8:42 am
by cotty
OnoSendai wrote:Sweet render!
To the gallery pls!
Thank you! I will let it cook another night and will upload it nearly without fireflies :wink:

Re: Subdivision question

Posted: Sat Jul 14, 2012 1:07 am
by cotty
Thirst for more ...

Re: Subdivision question

Posted: Sat Jul 14, 2012 1:09 am
by Voytech
cotty wrote:Thirst for more ...
Jaw drop....

Re: Subdivision question

Posted: Sat Jul 14, 2012 1:28 am
by galinette
Wow! Nice!

Maybe just some bubbles missing? Instancing lots of spheres should not make the scene too heavy

Etienne

Re: Subdivision question

Posted: Sat Jul 14, 2012 2:28 am
by cotty
galinette wrote:Wow! Nice!

Maybe just some bubbles missing? Instancing lots of spheres should not make the scene too heavy

Etienne
I will have a look at this. How do I add bubbles? Only little spheres in the beer or do they need a special material, normal direction, ...?

Re: Subdivision question

Posted: Sat Jul 14, 2012 2:41 am
by lycium
It's Friday, so I suggest:

1. Get a beer
2. Look at bubbles while drinking beer
3. Go home (carefully if you've "studied" a few)
4. Model bubbles

8)

Re: Subdivision question

Posted: Sat Jul 14, 2012 3:18 am
by Pibuz
cotty wrote:New version with quad mesh...
Ehy Cotty! How did you solve the tri-mesh issue? How did you model that glass, in the end?