InputMotionData_t

Positional acceleration This represents only the latest hardware packet's state. Values range from -SHRT_MAX..SHRT_MAX This represents -2G..+2G along each axis +tive when controller's Right hand side is pointed toward the sky.

public float posAccelX

+tive when controller's charging port (forward side of controller) is pointed toward the sky.

public float posAccelY

+tive when controller's sticks point toward the sky.

public float posAccelZ

Gyro Quaternion: Absolute rotation of the controller since wakeup, using the Accelerometer reading at startup to determine the first value. This means real world "up" is know, but heading is not known. Every rotation packet is integrated using sensor time delta, and that change is used to update this quaternion. A Quaternion Identity ( x:0, y:0, z:0, w:1 ) will be sent in the first few packets while the controller's IMU is still waking up; some controllers have a short "warmup" period before these values should be used. After the first time GetMotionData is called per controller handle, the IMU will be active until your app is closed. The exception is the Sony Dualshock, which will stay on until the controller has been turned off. Filtering: When rotating the controller at low speeds, low level noise is filtered out without noticeable latency. High speed movement is always unfiltered. Drift: Gyroscopic "Drift" can be fixed using the Steam Input "Gyro Calibration" button. Users will have to be informed of this feature.

public float rotQuatX

Angular velocity Values range from -SHRT_MAX..SHRT_MAX These values map to a real world range of -2000..+2000 degrees per second on each axis (SDL standard) This represents only the latest hardware packet's state. Local Pitch

public float rotVelX

Local Roll

public float rotVelY

Local Yaw

public float rotVelZ