In article <web.3df553866a56a85570499b5a0@news.povray.org>,
 "Arlon Meisner" <ame### [at] comcastnet> wrote:

> I don't understand how a union of these objects will remove the sharp corner
> that lies along the z axis. It seems to me that a union will simply result
> in two (why two?) boxes with 4 cylinders (lying along the z axis) simply
> buried in the boxes. An explanation would certainly help this newbie.

Two boxes arranged to make a cross shape, with the cylinders filling in 
the gaps in the corners:
    ___
 __|___|__
|  |   |  |
|__|___|__|
   |___|

Only 3/4 of each cylinder overlaps with the boxes. The macros do a 
similar thing, using 3 boxes to make a 3D cross.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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