Snap a brush to a curve

Hold down + (Windows) or + (Mac), click the curve and drag along the curve.

When you are sketching, you can snap a brush to a curve (or surface isoparametric curve or curve-on-surface). This allows you to use curves as sketching guidelines.

To snap a brush to a curve

1. With a brush active click the button to the right of the prompt line, or hold down + (Windows) or + (Mac), to activate curve snapping.
2. Move the stylus so the brush profile is near the curve.

   The brush profile will jump onto the curve.

   Tip:

   To set the brush curve snap tolerance, choose Preferences > General Preferences, then choose Paint from the left side of the option window, and set Brush Curve Snap Tolerance to the number of pixels the brush cursor must be from a curve in order for the brush profile to jump onto the curve.

3. Drag the stylus along the curve.
4. Click the button again, or release + (Windows) or + (Mac), to de-activate curve snapping.
   Tip:

   You can snap to invisible curves (see ObjectDisplay > Invisible) or curves on invisible layers (Layers > Visibility > Invisible).