Forum: Carrara


Subject: continuing GrayLensman's UV mapping saga: book II

graylensman opened this issue on Jan 31, 2001 ยท 5 posts


graylensman posted Wed, 31 January 2001 at 7:33 AM

Okay. Did a little digging, and discovered most of my problem with UV Mapper. To borrow from HAL 9000, it's attributed to "human error." So, I got the map to work properly in UVM, colored it in Photoshop, etc. Imported the UV model OBJ into RDS 5.0.4, applied the map. What I discovered herer is: the map is fine, but the object is missing a polygon!! Check the image: the first pic on left shows one side of the object, everything is fine (except the map is backward, but I can fix that in Photoshop). But the other side of the object, it looks funny. Upon further examination, it seems that there's a missing polygon. With this object, i can get by for now (i just need the one side). But can anyone shed insight on the prob? Steve/Clint: where can i get the OBJ import/export 5.0.3 extension? thanks again!!

AzChip posted Wed, 31 January 2001 at 10:38 AM

In which modeler did you make the object? I can't imagine a situation in the free-form modeler that would delete one of the faces of the model. But I don't know the Mesh Form modeler very well....


elgeneralisimo posted Wed, 31 January 2001 at 10:45 AM

It may be a reversed normal.


graylensman posted Wed, 31 January 2001 at 11:21 AM

Chip, the original object was created in the free form modeler, then exported as an OBJ; run thru UVM; reimported into RDS. At that point it's a mesh form object. And it imports with one face missing. I'm with you - I don't know the mesh form modeler very well, either, so playing around with the obj in that modeler produced some rather bizarre results. Generalisimo, when you say "a reversed normal" are you referring to the whole obj or just a portion? I know there's a setting in UVMapper to reverse the normals, but I assume that affects the entire object.


ClintH posted Wed, 31 January 2001 at 11:25 AM

gray - Bring the OBJ into RDS. Open the OBJ in the Mesh Form Modeler. Select the missing Polygon and then do a Reverse Polymesh Normals inside the Mesh Form room. See if that helps. I've seen this many times before. Clint

Clint Hawkins
MarketPlace Manager/Copyright Agent



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