|
UVs are what tell your software how to wrap a texture on a 3D model. I'll go over a method to simply UV map a model in a single piece as well as how to create a UV layout with multiple parts created off a single model. In my case I used 3DS Max, but it should apply regardless of your animation software.
You will need:
a) A model to apply UVs.
b) UV Master installed for ZBrush. If you don't see UV Master under the Zplugins menus in ZBrush, download and follow the installation instructions here: http://www.pixologic.com/zbrush/features/UV-Master/
Multiple Piece UV Layout
1. First prep your model. I created Mat IDs on a low res model and apply a multi sub object material to the model to retain groups in ZBrush. I kept the inside of the mouth separate by assigning a unique Mat ID to it as well.
2. Import into ZBrush as a Tool. (Check: Preferences Import/Export/ Import Mat as Groups to create groups) Groups will be displayed with different colors.
3. In ZBrush create UVS from the Zplugin Menu with Zplugin/UV Master. Click on "Work on Clone" to create a copy of your model.
Settings as seen below:
Refer to documentation for in-depth info, but Symmetry keeps the UV’S more symmetrical, polygroups, uses your polygroups if your model has them to cut it up. Enable Control Painting uses the Control Map you paint to help determine where to create seams.
4. Click Protect then Paint Protected areas. Then click Attract to paint attracted areas. Use Erase if you make any mistakes. After painting, save Ctrl Maps usingSaveCtrlMap button.
ctrl+shift+click on group to isolate a single group.
ctrl+shift+click viewport bg to unhide groups.
Red areas are Protected (discourage seam creation), Blue areas Attract (encourage seam creation).
Unclick Protect/Attract/Erase and you can see the seams:
Click Unwrap, then click Check Seams and adjust and redo as needed.
Click Flatten to check the UV layout, then Unflatten to get back.
|
