Hi all!

> object{Object  translate <-Minimum.x,-Minimum.y,-Minimum.z> scale 
> (1/MaxLength)}

imagine a box:

	box { <1,1,1>,<2,2,2> }

Minimum would be <1,1,1>, Maximum <2,2,2>. translating it by:

	translate <-Minimum.x,-Minimum.y,-Minimum.z>

(which is btw the same as "translate -Minimum") would result in the 
following box:

	box { <0,0,0>,<1,1,1> }

this box is not centered at the origin.
This one is better:

	translate -(Minimum+Maximum)/2

(Minimum+Maximum)/2 is the center of the bounding box.

Rest looks fine (didn't test it though)

HTH,
Florian
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