J M Davitt wrote:
> Bob Badour wrote:
> > Does a point intersect with itself?
>
> Sure. But I'm guessing that the intersection of a pair of boxes
> should be a box (not necessarily a cube) having non-zero volume.
>
> Had the line segments on the axes been described as, say, closed-
> open intervals - like {a, <x, [0,2)>, <y [0,2)>, <z, [0,2]>} - there
> would be no discussion. But they weren't, and we're trying to decide
> whether a point is the same as box with edges of length zero.
This a minor issue. You can hangle it on case-by case basis and adjust
the query to whatever definition of the interval (open, closed,
semiopen) the box definition is based on.
Received on Fri Apr 21 2006 - 21:58:05 CDT
