Function HmdQuaternion_Normalize

samples/drivers/utils/vrmath/vrmath.h:83–94

}

static vr::HmdQuaternion_t HmdQuaternion_Normalize( const vr::HmdQuaternion_t &q )
{
	vr::HmdQuaternion_t result{};
	double n = sqrt( q.x * q.x + q.y * q.y + q.z * q.z + q.w * q.w );

	result.w = q.w / n;
	result.x = q.x / n;
	result.y = q.y / n;
	result.z = q.z / n;

	return result;
}

static vr::HmdQuaternion_t HmdQuaternion_FromEulerAngles(double roll, double pitch, double yaw) {
  double cr = cos(roll * 0.5);