SubD to Polygon conversion problem

# 1 25-01-2006 , 01:55 PM

Registered User
Join Date: Dec 2005

Posts: 6

Hi

I am having trouble converting a subd object to a polygon object, I get these strange black faces around certain edges in the viewports as well as when I render.

user added image

Any suggestions as to how I can fix this problem?

Thanks
/BlueShift

Quote

# 2 25-01-2006 , 02:22 PM

Subscriber
Join Date: Oct 2005

Location: Leeds

Posts: 1,154

maybe left over vertices.

Quote

# 3 25-01-2006 , 04:41 PM

Subscriber
Join Date: Jun 2005

Location: Sweden

Posts: 110

try hitting the "3" key user added image

to show maximum detail.

user added image

Quote

# 4 25-01-2006 , 06:52 PM

Registered User
Join Date: Dec 2005

Posts: 6

Those objects were converted from subd to polygon.

Using the mesh smoothing options only improves the quality of subd or nurbs meshes - I think, because it didn't help.

No left over vertex's either.

/BlueShift

Quote

# 5 25-01-2006 , 08:04 PM

Subscriber
Join Date: Mar 2005

Location: London

Posts: 1,135

if these shots are of a ploy mesh u need to get rid of the 5 sided polys
look at the pic i added to see where to use the split poly tool

hope this helps but make sure that wen u use the split tool u make sure that the new verts are merged

also make sure u use the split poly tool on the back of the model to get rid of ne 5 sided faces

this should fix it if it is a poly mesh

Attached Thumbnails

Click image for larger version

Name: subd_poly_problem reply.jpg
Views: 336
Size: 65.2 KB
ID: 26616

Now at SMU doing BSc 3D Computer Animation so its hard to get on here
My wire render tut https://forum.simplymaya.com/showthre...threadid=20973

Last edited by pbman; 25-01-2006 at 08:10 PM.

Quote

# 6 25-01-2006 , 08:21 PM

Subscriber
Join Date: Oct 2005

Location: Leeds

Posts: 1,154

i think its maybe something to do with the normals play with the normals options cause im not sure either mike or some one will know.

Quote

# 7 26-01-2006 , 12:11 AM

Subscriber
Join Date: May 2005

Posts: 56

As far as I know it's an artifact of the conversion from sub-d to poly's. If you select the object in question and then go to Edit Polygons- Normals- soften/harden----open the option box and move the slider to all harden and the select apply, that should take care of the problem.

Quote

# 8 26-01-2006 , 12:46 PM

Registered User
Join Date: Dec 2005

Posts: 6

Thanks guys, soften/harden polys does the trick

Be warned though: you have to select the edges where these artifacts occur and apply varying degrees of smoothing to them to get rid of artifacts.

Applying Harden to a large rounded surface will produce faceting along edges.

/BlueShift

Quote

SubD to Polygon conversion problem

Posting Rules Forum Rules

Similar Threads

Topics

Free Courses

Full Courses

VFX News