■ ZAppLink 199- Click the Work On Clone button to create a clone of the current ZTool with no subdi-
vision levels. Click the Unwrap button and ZBrush will generate UV coordinates. - From Lightbox select one of the checker textures. Load this into the texture swatch
under Tool → Texture Map. This checker map will help you see the result of the UV
layout (Figure 5.69). - Click the Copy UV button to copy the UV layout into memory. Select the original
ZTool. Step down to the lowest subdivision level and click the Paste UV button to
transfer the UVs to the original mesh.
It is important to understand that UV Master is intended to be an automatic mapping
solution for artists. The seams may be placed in unexpected areas like the center of the face
or the middle of the front of the body. ZBrush is calculating the most efficient placement;
it is also using the Ambient Occlusion methodology to try to place seams in shadow areas.
While the UVs generated may be a good start for production work, they are usually more
than enough for an artist trying to generate a single render or character rotation. For more
information on manually editing UVs, check out my second book, ZBrush Digital Sculpting
Human Anatomy. In Chapter 5, “Texture Painting,” Eric Keller gives an in-depth look at
the Headus UV for laying out UV coordinates.
Figure 5.69 Use the checker textures to visualize the UV layout.