Test that sensor reports -9.8 m/s^2 along the Z axis when device is at rest on a leveled surface and web page is facing towards the ground. Test +X gravity. ... <看更多>

Get the 3x3 rotation matrices, R1 and R2 , with getRotationMatrix() at the two timepoints of interest. You would like to know the angle of ... ... <看更多>

They are three sensors that are useful for determining position and orientation, but they measure different things. A magnetometer measures ... ... <看更多>