SnakeHook Brush
From ZBrush Info
The SnakeHook brush allows you to easily pull out horns, tendrils, branches, and other extrusions from a 3D surface. This is work that previously would have required a good deal more time using multiple tools.
- Select the SnakeHook brush with a Z Intensity of 100.
- Use the Dots stroke type to pull out a single extrusion.
- Drag on an area of the model. Extrusions will be pulled out underneath the brush.
- Extrusions will be pulled out in a direction perpendicular to the surface from which they start.
- An important point about the SnakeHook Brush is that it needs to stretch polygons as it extrudes a surface. As a result, you need to ensure that the resolution of the surface you extrude is high enough to support the extrusion you make. You can:
- Subdivide the entire model to achieve sufficient polygons, using HD Sculpting if necessary.
- Locally subdivide the surface where you'll be extruding. This needs to be done while the subdivision level of the model is at its lowest setting, but will add far fewer polygons than subdividing the entire model.
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SnakeHook Controls
SnakeHook: This brush pulls an extrusion out from the underlying surface. The slider value determines how an extrusion angles away from the surface from which it is pulled. A low value will cause the extrusion to be pushed backward (into the screen) as it is pulled out. A value of 0 will cause the stroke to pull perpendicular to the original surface, and a high value will pull toward the user.
When you are using SnakeHook on a surface that is facing you, ensure that SnakeHook intensity is set to a positive value, otherwise you won't actually be pulling out anything. When pulling on a surface that is oriented toward the side, the extrusion will follow the mouse; in this case, the SnakeHook intensity will cause the extrusion to bend away from or toward you as it is pulled out.
Note: You can create spirals with SnakeHook by setting SnakeHook to a positive value, and pulling out from a surface facing you, using a circular motion of the mouse.
