sorry for getting you confused...
I meant CSG of course, it was 2 o'clock at night when I wrote this and I had
already had too little sleep...
when I woke up I realized that it wouldn't be easy to see... I'll post
something in the povray.binaries.images, thanks for the suggestion

thanks for your time

Daan

"hughes b" <omn### [at] charternet> wrote in message
news:3d5f480e@news.povray.org...

> news:3d5ed459$1@news.povray.org...
> >
> > I want to create a surface whose edges are defined by the sides of two
> > intersecting cylinders and a box but whose center is elevated. Is there
a
> > way to do this using CGI?
> > The edges are in one plane and the shape resembles the top of a boat or
> > perhaps a sword. It is essential that the edges of the new surface are
in
> > that same plane so it all fits nicely....
>
> I think I just strained a neuron or two trying to imagine that shape. Must
> be the top of boat, or sword with edges all on same plane I have trouble
> with. CGI=CSG? ;-)
>
> I have a feeling you might need to grab your nearest paint program and
> sketch something to post at povray.binaries.images. I keep thinking of two
> kinds of things, and then that part about elevated in the center throws me
> off thinking you might be talking of a end to end curve rather than side
to
> side (if that makes any sense).
>
> If it's only a pair of grooves, or two elongated depressions, with a flat
> underside then I might know what you're asking for. If not.... better try
> that picture or maybe someone else will come along here to envisions it as
> you do. I'm no good with ASCII art otherwise I'd try to draw what I'm
> thinking of.
>
> You know what, maybe I'm being too complex. Please try rendering the
> following and see if that's about it or not and advise of what is right or
> wrong with it:
>
> #declare WhatIsIt1=
> intersection {
> cylinder {-x,x,1 scale <1.001,0.25,1> translate -z/1.5}
> cylinder {-x,x,1 scale <1.001,0.25,1> translate z/1.5}
> box {-1,1 scale <1,0.5,1> translate -y/2.5}
>  pigment {rgb 1}
> }
>
> #declare WhatIsIt2=
> difference {
> box {-1,1 scale <1,0.5,1> translate -y/2.5}
> cylinder {-x,x,1 scale <1.001,0.25,1> translate -z/1.5}
> cylinder {-x,x,1 scale <1.001,0.25,1> translate z/1.5}
>  pigment {rgb 1}
> }
>
> //object {WhatIsIt1}
>
> object {WhatIsIt2}
>
> light_source {<1,2,3>,1}
>
> camera {location 2 look_at 0}
>
>
>

Post a reply to this message