Fake Edge Shader

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Big&

I was trying to think of a way to do a edge shader like you see in many PC demos.
Its basically an effect that makes models look like they are been viewed with an electron microscope. Well, that's how I would describe it anyway.

After messing around for ages with variations on toon shading from the archive, I had a go with negative light...

And it worked.

Bigger version here!

Graphics3D(800,600,0,2)
SetBuffer(BackBuffer())

bug=LoadMesh("bug.b3d")

cam=CreateCamera()
lig=CreateLight(1,cam)

MoveEntity(cam,0,0,-150)
CameraZoom(cam,2)

;The bit that does the effect
LightColor(lig,-255,-255,-255)
AmbientLight(128,255,64)

Repeat
	TurnEntity(bug,0,0.5,0)

	UpdateWorld()
	RenderWorld()

	Flip()

Until KeyDown(1)
End

Could it be any simpler...
(Not earth-shattering I admit but a nice effect.)