Seems to be a problem with the 'merge' there instead, so maybe it really is a
bug.

Bob

"Eric Freeman" <eri### [at] ametronet> wrote in message
news:387bcd3f@news.povray.org...
> "omniVERSE" <inv### [at] aolcom> wrote in message
> news:387ba5f3@news.povray.org...
> >
> > #declare outerDome = merge {
> >   cylinder {
> >     <0,baseCylHite-baseCylGrooveY+gap,0>,  ****FIRST GAP
> >     <0,domeHite,0>
> >     baseCylGrooveR1-gap   ****SECOND GAP
> >   }
> >   sphere {
> >     <0,domeHite,0>,
> >     baseCylGrooveR1-gap+0.01  ****THIRD GAP
> >   }
> > }
> >
> > This appears to be the problem or answer depending on
> > how you look at it.  The additional gap subtraction from
> > before is changed to addition for this part.  Fixes it up just
> > fine apparently.
>
> I don't understand the problem.  The dome sits in a groove cut into the
> base.  The gap variable is used to add a little separation between the
> bottom of the dome and the sides and bottom of the groove to avoid
> coincident surfaces.  The first gap is added to lift the dome slightly above
> the bottom of the groove (baseCylHite-baseCylGrooveY).  The second and third
> gaps are subtracted from the outer radius of the dome to provide a gap
> between the dome and the outer wall of the groove (baseCylGrooveR1).  The
> 0.01 added to the sphere is a fudge amount because without it there is a
> line visible where the sphere and cylinder meet.
>
> I've just compared the above with my scene file and see that you are
> referring to the 0.01 fudge amount added to the radius of the sphere.  I
> don't know why, but negating or removing this 0.01 clears up the problem.
> Now I'm back to having a line where the sphere and cylinder meet.
>
> Eric
> ---------------
> "A wise and frugal government, which shall restrain men from injuring one
> another, which shall leave them otherwise free to regulate their own
> pursuits of industry and improvement, and shall not take from the mouth of
> labor the bread it has earned.  This is the sum of good government."
>      - Thomas Jefferson
>      - First inaugural address, 1801
> ---------------
> http://www.ametro.net/~ericfree
>
>
>
>

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