Dark patches on surface

Digital humans the art of the digital double

Ever wanted to know how digital doubles are created in the movie industry? This course will give you an insight into how it's done.

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: 278
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: 272
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: 285
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: 307
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