TheazimuthAngle read-only property of thePointerEvent interface represents the angle between the Y-Z plane and the plane containing both the transducer (pointer or stylus) axis and the Y axis.

Depending on the specific hardware and platform, user agents will likely only receive one set of values for the transducer orientation relative to the screen plane — eithertiltX andtiltY oraltitudeAngle andazimuthAngle.

For an additional illustration of this property, seeFigure 5 in the specification.

Value

An angle in radians between0 and2π where0 represents a transducer whose cap is pointing in the direction of increasing X values (point to "3 o'clock" if looking straight down) on the X-Y plane, and the values progressively increase when going clockwise (π/2 at "6 o'clock",π at "9 o'clock",3π/2 at "12 o'clock").

When the transducer is perpendicular to the surface (altitudeAngle ofπ/2), the value is 0.For hardware and platforms that do not report tilt or angle, the value is0.

Example

someElement.addEventListener("pointerdown", (event) => {  process_angles(event.altitudeAngle, event.azimuthAngle);});

Specifications

Browser compatibility

See also

• PointerEvent.altitudeAngle
• PointerEvent.tiltX
• PointerEvent.tiltY