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thank you heaps...
the pic looks really promising, I'll look into it when I've got some time
again... again, thank you _a lot_ for your time and effort...
"Tony LaVigne" <ton### [at] xenomechanics com> wrote in message
news:web.3d603e923cc842f988d4e3910@news.povray.org...
> INVALID_ADDRESS wrote:
> >Hi, I posted this in the povray.newusers section already, but it was said
> >that it was hard to visualize what I meant and that perhaps I should post
my
> >question here with a little picture... so here it goes:
> >
> >can I create a surface that is elevated in the center but has edges that
are
> >in one plane? is this possible with CSG or are there other ways?
> >
> >thnx a lot in advance,
> >
> >Daan
> >
> Daan,
> Below is a link to some code I wrote.
> http://www.xenomechanics.com/POVRAY/boat_bulge2.html
>
> The idea was to make your boat with triangles. All vertices would
either
> be on the boundry that are your 2 circles or on the plane symetry( on the
> keel).
>
> The smooth_triangle call uses normals for the vertices. The vertices on
> the symetrical plane would be straight up middleNormal = <0,1,0>;
> and the vertices along the boundry would be tilted outward,
> boundryNormal=<0,cos(90),sin(90)>
> but the normals on the model are not being set to these above boundry
> conditions and I'm not sure what's wrong.
>
> The profile (looking from the top) seems to be correct and there is
> continuity of the whole model. But it's not quite there yet.
>
> I appoligize if I haven't posted all this correctly as I'm still new to
> Povray.
> Let me know what you think
> Tony
>
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