Axis
Determines the axis that what direction faces will move when painted:
- X, Y, Z - Painted geometry will move along the world axis X, Y, or Z only, regardless of the direction of the displacement direction.
- Face Normal - Painted geometry will move along an axis determined by the normal of one specific face. Change the painting direction by using <Alt>+right-click on any face in the 3D view. The normal of the clicked face will become the direction of subsequent painting.
- Subdiv Normal - Painted geometry will move along an axis determined by the curve generated after using the Subdivide command on a set of faces.