Spin
void Spin(float rx, float ry);
fTrackingInfo.pickedObject->Spin(0.0f, 0.0f);
fTrackingInfo.pickedObject->Spin(0.5f * fTrackingInfo.lastDy, 0.5f * fTrackingInfo.lastDx);
fTrackingInfo.pickedObject->Spin(0.0f, 0.0f);