interpolation Value
Interpolation value to be used to combine both leveling and relative attitudes. Must be between 0.0 and 1.0 (both included). The closer to 0.0 this value is, the more resemblance the result will have to a pure leveling (which feels more jerky when using accelerometer). On the contrary, the closer to 1.0 this value is, the more resemblance the result will have to a pure non-leveled relative attitude (which feels softer but might have arbitrary roll and pitch Euler angles).
Throws
if value is not between 0.0 and 1.0 (both included).