PenAxis

Pen distance to drawing surface. Unidirectional: 0.0 to 1.0

Pen pressure. Unidirectional: 0 to 1.0

Pen barrel rotation. Bidirectional: -180 to 179.9 (clockwise, 0 is facing up, -180.0 is facing down).

Pen finger wheel or slider (e.g., Airbrush Pen). Unidirectional: 0 to 1.0

Pressure from squeezing the pen ("barrel pressure").

Pen horizontal tilt angle. Bidirectional: -90.0 to 90.0 (left-to-right).

Pen vertical tilt angle. Bidirectional: -90.0 to 90.0 (top-to-down).