modifyAngVelocity :: (GLdouble -> GLdouble) -> Entity -> Entity
modifyAngVelocity f t = t{angVelocity = f (angVelocity t)}
modifyAngVelocity :: (GLdouble -> GLdouble) -> Entity -> Entity
modifyAngVelocity f t = t{angVelocity = f (angVelocity t)}
modifyAngVelocity f t = t{angVelocity = f (angVelocity t)}