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Access the device motion and orientation sensors. All data is presented in terms of three axes that run through a device. According to portrait orientation: X runs from left to right, Y from bottom to top and Z perpendicularly through the screen from back to front.
Subscribe for updates to DeviceMotion.
listener (function) -- A callback that is invoked when a
DeviceMotion update is available. When invoked, the listener is
provided a single argument that is an object containing following fields:
acceleration (object) -- Device acceleration on the three axis as an object with x, y, z keys. Expressed in m/s2.
accelerationIncludingGravity (object) -- Device acceleration with the effect of gravity on the three axis as an object with x, y, z keys. Expressed in m/s2.
rotation (object) -- Device's orientation in space as an object with alpha, beta, gamma keys where alpha is for rotation around Z axis, beta for X axis rotation and gamma for Y axis rotation.
rotationRate (object) -- Rotation rates of the device around each of its axes as an object with alpha, beta, gamma keys where alpha is around Z axis, beta for X axis and gamma for Y axis.
orientation (number) -- Device orientation based on screen rotation. Value is on of 0 (portrait), 90 (right landscape), 180 (upside down), -90 (left landscape).
An EventSubscription object that you can call remove() on when you
would like to unsubscribe the listener.