ZBrush Character Creation - Advanced Digital Sculpting 2nd Edition

■ Sculpting the Skull 59

Frontalis

Temporalis

Orbicularis Oculi

Orbicularis Oris

Zygomaticus Minor

Zygomaticus Major

Triangularis

Massater

Mentalis

Figure 2.46 The major muscles of the face

For the muscles let’s change to the Red Wax material to help you see the placement
of each muscle as it is sculpted. To paint on a second material while preserving the first, fill
the ZTool with a base material; otherwise, when you select the Red Wax material the whole
ZTool will change to display the new material.
Although we’re using multiple materials for clarity in this chapter, filling objects with
a material is also useful for keeping subtools the same color. When a subtool is inactive, it
changes to a darker shade compared to the active one. If you fill a subtool with a material,
this overrides the default behavior and all subtools display with their full material settings.
To fill a model with a material, follow these steps:

1. From the Material menu, select the White Cavity material. At the top of the screen
   in your brush controls, make sure that MRGB, RGB, ZAdd, and ZSub are off. Only
   M should be active. With the White Cavity material selected in the material swatch,
   choose Color from the main menu and click the FillObject button. This will fill the
   skull with the White Cavity material.


2. Change to Red Wax in the Material Browser, and the material on the skull remains
   unchanged.


3. Set the Rake brush to M and ZAdd. Now when you rake the surface of the model, the
   brush will add form as well as change material.
   Begin by opening the Skull ZTool from the first lesson. Add the masseter muscle
   (the chewing muscle that fills out the space between the lower jaw and the cheekbone;
   see Figure 2.47). Its form can be simplified into the shape shown in Figure 2.48.