Before you begin painting in 3D, you should define global scene settings and default stroke settings.
You can globally set scene lighting, scene scale, scene wrapping, and depth options from the Paint Effects Globals window. These settings are used when you paint in the scene painting view.
Define default stroke settings
The stroke settings you define for the Paint Effects Tool become the default for all new strokes you paint based on the depth of the surfaces you are painting on. You can set the display quality for the stroke, the distance the stroke is offset from the surface, and whether the stroke is painted at depth. If you use a stylus and tablet, you can also map the stylus pressure to up to three attributes. With the exception of the Paint at Depth option, these settings can all be modified for the stroke after it is painted.
To define default stroke settings
Make the brush respond to stylus pressure
With a real paint brush, pressing harder makes the brush wider and applies the paint more thickly. You can achieve the same effect with Paint Effects by specifying the effect of pressure on the stylus for each stroke and the threshold of response to pressure. You can map up to three values to stylus pressure. For example, if you map scale, tubes per step, and tube length to stylus pressure, increasing stylus pressure (pressing harder) increases the global scale for the brush, but it also increases the number of tubes “planted” per step and the length of the tubes. Most of the preset brushes have pressure settings defined.
You can change the Pressure Mapping, Pressure Min, and Pressure Max settings after painting the stroke. For more information, see Modify pressure mappings for existing strokes.