Dark patches on surface

Maya 2020 fundamentals - modelling the real world

Get halfway through a model and find it's an unworkable mess? Can't add edge loops where you need them? Can't subdivide a mesh properly? If any of this sounds familiar check this course out.

Watch

# 1 07-02-2009 , 03:41 PM

Registered User
Join Date: Apr 2006

Posts: 26

Hey, im having some trouble with dark patches appearing on the surface of my models when rendered.

I think it may be the geometry especially in the corners, if you can help at all please do.

Here are some images:

Attached Thumbnails

Click image for larger version

Name: 13.jpg
Views: 206
Size: 59.3 KB
ID: 41378

Quote

# 2 07-02-2009 , 03:42 PM

Registered User
Join Date: Apr 2006

Posts: 26

Corner detail

Attached Thumbnails

Click image for larger version

Name: 12.jpg
Views: 209
Size: 39.2 KB
ID: 41379

Quote

# 3 07-02-2009 , 03:43 PM

Registered User
Join Date: Apr 2006

Posts: 26

And the render with smooth edges

Attached Thumbnails

Click image for larger version

Name: 15.jpg
Views: 216
Size: 52.3 KB
ID: 41380

Quote

# 4 07-02-2009 , 03:44 PM

Registered User
Join Date: Apr 2006

Posts: 26

And with some edges hardened

Attached Thumbnails

Click image for larger version

Name: 14.jpg
Views: 238
Size: 57.8 KB
ID: 41381

Quote

# 5 07-02-2009 , 04:12 PM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

perhaps it is because your geometry is a little messy. you should stick to 4 sided polygons. and if you have edges close together they will create a harder edge or pinch in your case.

...is it a macbook?

Quote

# 6 07-02-2009 , 04:22 PM

Registered User
Join Date: Apr 2006

Posts: 26

Ok thanks, any ideas on how to fix it? should i change the triangles into polygons?

And yes it is user added image

the new macbook pro.

Quote

# 7 07-02-2009 , 10:28 PM

Registered User
Join Date: Dec 2005

Location: Brooklyn, NY

Posts: 3,708

i don't think you necessarily need to make your polygons 4 sided if you're modeling a hard object. it may be that your normals are messed up - but i'm not sure why that's not showing in your view port. i'd definitely try to clean up the geometry a bit though at the corner - try to get rid of that sharp corner.

arran3D

arran3D blog

Quote

Reply to this thread