Probleme to clean my mesh

# 1 22-09-2011 , 05:51 AM

Subscriber
Join Date: Jul 2011

Posts: 12

Hello,

I begin with Maya 2012; on the picture attached you can see my first mesh (a fox snout)... which is not perfect ! When I smooth it, I can detect some problems on the mesh. I want to know if Maya can clean this mesh, or do I have to do it myself manually ? (For exemple there are 2 triangular polygons and and a problem of vertex or edge).
Thank you for your help.

Attached Images

Quote

# 2 22-09-2011 , 06:51 AM

The thin red line
Join Date: Aug 2009

Location: England

Posts: 4,472

The only thing I can think is there are some loose verts in there, if before you smooth mesh select verts and have a look at those areas if you see a vert on a edge without any supporting edges delete them, this can happen if you delete a edge with the delete button you should delete a edge using the "Edit mesh then delete edge/Vert"...........dave

Avatar Challenge Winner 2010

Quote

# 3 22-09-2011 , 08:16 AM

Lifetime Member
Join Date: Feb 2010

Location: Australia

Posts: 4,255

You could also select all verts and 'Edit Mesh>Merge' just watch the settings for the proximity in the merge option box...I set mine to 0.001....or 0.01. Also you could select all verts except those on a terminating edge...ie back loop of snout..then hit delete. Otherwise as dave suggested and look for vert numbers in the unsmoothed model. Highlight where you think they are in the wierd parts and look at the vert count...

cheers bullet

bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes

Quote

# 4 22-09-2011 , 09:18 AM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

if you have a triangle on your mesh and then smooth, the triangle becomes a quad.

Quote

# 5 22-09-2011 , 01:20 PM

Technical Director
Join Date: Feb 2004

Posts: 2,988

When you perform a smooth operation, it uses something called the Catmull-Clark algorithm. This algorithm will always result in quadrilateral faces. If small faces like the ones you're seeing occur, it means that there are some unmerged, floating vertices in the mesh.

Imagination is more important than knowledge.

Quote

# 6 22-09-2011 , 02:16 PM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

the algorithm used when smoothing is called Catmull-Clark. if you have a triangle on your mesh and then smooth, the result is a quad. On the bottom right image you can see on the second edge loop from the left that there are probably a couple of un-merged vertices.

Quote

# 7 22-09-2011 , 02:38 PM

Technical Director
Join Date: Feb 2004

Posts: 2,988

When you perform a smooth operation, it uses something called the Catmull-Clark algorithm.

Originally Posted by NextDesign

the algorithm used when smoothing is called Catmull-Clark.

Originally Posted by honestdom

Ha, Copier user added image

Imagination is more important than knowledge.

Quote

# 8 23-09-2011 , 05:35 AM

Subscriber
Join Date: Jul 2011

Posts: 12

Thank you

Thank you for all these answers, I will try to resolve this ! user added image

Quote

# 9 02-10-2011 , 08:42 PM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

Ha, Copier

Originally Posted by NextDesign

Haha, yes. sorry just so it doesn't look like i'm "parroting" what you were saying, i should clarify.

I was just having a joke with myself.

you see, i posted

if you have a triangle on your mesh and then smooth, the triangle becomes a quad.

Originally Posted by honestdom

and then you posted

When you perform a smooth operation, it uses something called the Catmull-Clark algorithm. This algorithm will always result in quadrilateral faces.

Originally Posted by NextDesign

which is what i said, but with some extra information and bigger words.

So i then copied your post and my post and put them together to make a super answer.
pretty crap joke, i know. user added image

Quote

# 10 02-10-2011 , 09:41 PM

Moderator
Join Date: Jan 2004

Location: Michigan, USA

Posts: 2,998

Another option would be to try and run a mesh>clean and select non-manifold geometry, laminar and zero area faces. These are the most common things that can cause serious errors and can be tricky to isolate.

"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675

Last edited by ctbram; 03-10-2011 at 01:14 AM.

Quote