Ultimate UnWrap3D Tutorial

Carl E. Schou

September 30, 2003

Page 5 - Mapping by Unwrapping

 

Unwrap Faces

The Unwrap Faces algorithm literally unwraps the model and lays it flat to produce a distortion free UV template.  When using this approach, it is best to select and map the model in several small portions to prevent overlapping UV coordinates.  This overlap would cause two or more areas on the model to be textured from the same area of the image map.  For illustration, we will look at two examples where the entire model was unwrapped, one with the Ruling Lines algorithm, and one with the Spiral algorithm, to produce overlapped UVs.  Then we will look at an example where the mapped in small sections to prevent the overlap from occurring.

The image below shows the Unwrap Faces Ruling Lines mapped model. Click on the image to see a larger 1024 by 768 pixel version.

 

 

 

The image below shows the Unwrap Faces Spiral mapped model. Click on the image to see a larger 1024 by 768 pixel version.

 

 

The overlap problem was fixed by splitting the modelís UV coordinates into groups, and then unwrapping each group separately. 

The image below shows the model mapped in small separate sections using the Ruling Lines and the Spiral unwrap algorithms.  Click on the image to see a larger 1024 by 768 pixel version.

 

 

 

 

 

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Copyright © 2003, Carl E Schou, All Rights Reserved