Christopher James Huff wrote:
> In article <3EA### [at] matumde>, Achill <ach### [at] matumde> 
> wrote:
> 
> 
>>>Let's say we have a unit cube between <0,0,0> and <1,1,1> and a sphere at
>>><0,0,0> with radius 1.  What is the 'vector sum' of these objects?
>>
>>As far as I understand the macro
>>"Round_Box_Union(PtA, PtB, EdgeRadius)",
>>it would be "Round_Box_Union(<0,0,0>, <1,1,1>, 1)".
> 
> 
> The vector sum of a sphere and a box is 3 boxes, 8 spheres, and 12 
> cylinders?

Its the union of them, yes.
That is a consequence of the so called "Steiner Theorem" in "convex 
geometry".

Achill

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