Думаю, простейший код всё обьяснит. Как в плане производительности, так и в плане обьема.
Graphics3D 320,240,16,2
SetBuffer BackBuffer()
Obj1=CreateCube()
Obj2=CreateSphere()
MoveEntity Obj2,1,2,3
Cam=CreateCamera()
MoveEntity Cam,0,0,-5
Sun=CreateLight(1)
Scaner=CreatePivot()
;1---------------------
;Variant1: PointEntity
While Not KeyHit(1)
m=MilliSecs()
For q=1 To 10000
PositionEntity Scaner,EntityX(Obj1),EntityY(Obj1),EntityZ(Obj1)
PointEntity Scaner,Obj2
TurnEntity Obj1,(EntityPitch(Scaner)-EntityPitch(Obj1))*0.00001,(EntityYaw(Scaner)-EntityYaw(Obj1))*0.00001,0
Next
m=MilliSecs()-m
RenderWorld()
Text 10,10,"POINTENTITY TEST"
Text 10,20,"Millisecs: "+m
Flip(1)
Cls
Wend
TurnEntity Obj1,45,45,0
;2---------------------
;Variant2: RotateEntity
While Not KeyHit(1)
m=MilliSecs()
For q=1 To 10000
RotateEntity Obj1,EntityPitch(Obj1)+DeltaPitch(Obj1,Obj2)*0.00001,EntityYaw(Obj1)+DeltaYaw(Obj1,Obj2)*0.00001,0
Next
m=MilliSecs()-m
RenderWorld()
Text 10,10,"ROTATEENTITY TEST"
Text 10,20,"Millisecs: "+m
Flip(1)
Cls
Wend
End