Rotate a vector around another point.
CL_Vec2<float >&a_Vec2< at >:t;::rotateateate( const CL_Vec2 < at > pampamp; hotspot, const CL_Angle & angle); static CL_Vec2<float >_Vec2< at >:t;:t;::rotate( const CL_Vec2 < at > pampamp; vector, const CL_Vec2 < at > pampamp; hotspot, const CL_Angle & angle);