|
6th March 2010, 02:59 AM | #1 |
Member
Advanced member
Join Date: Mar 2010
Location: Norway
Posts: 45
|
Fixing normals
What is the best approach to fixing messed up normals? While I can flip normals that's of little help as a global command since it means that some will be fixed while the rest go bad. Is there a "synchronize normals"? Alternatively, how will I pinpoint each erratic surface and flip them one by one?
|
6th March 2010, 07:04 AM | #2 |
Senior Member
Professional user
Join Date: Jul 2005
Location: France
Posts: 737
|
Re: Fixing normals
Hi,
unfortunately, as you said, there's no "synchronize normals" option available in AC3D. The best thing to do is to take care of your normals while modeling. I've found that reversed normals sometimes appear when : 1 - I extrude a face (the top of a cylinder for example) along a path 2 - I create an ordered surface For case 1, after the extrude, I usually make all the extruded faces 1-sided and see if there's a problem For case 2, the trick is to select your vertices counterclockwise while you (the camera) are facing the surface you are creating HTH
__________________
OL. |
6th March 2010, 04:33 PM | #3 |
Member
Advanced member
Join Date: Mar 2010
Location: Norway
Posts: 45
|
Re: Fixing normals
Good advice! Counter clockwise selection of vertices is important as well as being meticulous about getting each surface right. I found this script very useful:
http://www.inivis.com/forum/showthre...iding+surfaces By hiding surfaces I can look inside a model without deleting anything. Convex surfaces tend to get the normals wrong. A black surface usually means that normals need to be flipped. By the way, I've spent hours trying to fix up a convex surface. Then I found a better way, I cut a slice of a sphere and used this for my curved surface element. |
|
|