nsIDeviceMotionData 编辑

xpcom/system/nsIDeviceMotion.idlScriptable This interface provides information about device motion. 1.0 66 Introduced Gecko 1.9.2 Inherits from: nsISupports Last changed in Gecko 6.0 (Firefox 6.0 / Thunderbird 6.0 / SeaMonkey 2.3) Note: This interface was named nsIDeviceMotionData prior to Gecko 6.0 (Firefox 6.0 / Thunderbird 6.0 / SeaMonkey 2.3).

Attributes

Attribute	Type	Description
type	unsigned long	The type of motion data reported by this object; see Motion type constants for possible values. Read only.
x	double	The amount of tilt along the X axis. Read only.
y	double	The amount of tilt along the Y axis. Read only.
z	double	The amount of tilt along the Z axis. Read only.

The values of x, y, and z can range from -1 to 1, where 0 means the device is balanced on that axis. See Accelerometer values explained for details.

Constants

Motion type constants

Constant	Value	Description
TYPE_ACCELERATION	0	The motion data describes device acceleration.
TYPE_ORIENTATION	1	The motion data describes a device orientation chang.

See also

• MozOrientation
• nsIDOMOrientationEvent
• nsIDeviceMotionListener
• nsIDeviceMotion