How about a "sweep" object of some kind?

Bob Hughes <inv### [at] aolcom> wrote in message
news:37cc138e@news.povray.org...
> An oval using the torus is not going to turn out right unless you use
> Kens second method. Uneven scaling is one thing, procedural-type
> scaling is another, of which POV-Ray is unable to do. Another
> possibility is to string together spheres or blob components along a
> spline path, just not as efficient.

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You need a copy of Mathematica!

I can't use more than a fraction of what it does, but it's too cool to give
up so I won't give it away <g>.  Maybe you can get a special student price?

Nieminen Juha <war### [at] cctutfi> wrote in message
news:37ce25b1@news.povray.org...
>   I have been calculating polynomials (man, I wish I got some mathematical
> program to help me; typing polynomials by hand is tedious) and it seems
> to be impossible.

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If you mean in official Pov, don't think that would be any different
than trying to scale a torus, ie. 'lathe', 'sor' etc. are still
circular, so I don't see any way other than some CSG method.  Keep in
mind I do not know all there is to know by far.

Bob

John M. Dlugosz <joh### [at] dlugoszcom> wrote in message
news:37ceeb75@news.povray.org...
> How about a "sweep" object of some kind?
>
> Bob Hughes <inv### [at] aolcom> wrote in message
> news:37cc138e@news.povray.org...
> > An oval using the torus is not going to turn out right unless you
use
> > Kens second method. Uneven scaling is one thing, procedural-type
> > scaling is another, of which POV-Ray is unable to do. Another
> > possibility is to string together spheres or blob components along
a
> > spline path, just not as efficient.
>
>
>

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Nieminen Juha wrote in message <37ce25b1@news.povray.org>...
>Mr. Art <mr.### [at] gcinet> wrote:
>: Point taken. But is there someone out there that can point out the
>: places in the code to put the values a and b in something like
>: this?
>
>  It's not as easy as "putting the values a and b in this".
>  I have been calculating polynomials (man, I wish I got some mathematical
>program to help me; typing polynomials by hand is tedious) and it seems
>to be impossible.
>  If I'm correct, a perfect elliptical torus would require a 8th degree
>polynomial (a very simple explanation of this is that it's because the
torus
>is a 4th degree polynomial and you have to raise it to the power of 2).
>Povray can only handle polynomials up to the 7th degree.

Can the isosurface functions handle an 8th degree polynomial?

Mark

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Mark Wagner <mar### [at] gtenet> wrote:
: Can the isosurface functions handle an 8th degree polynomial?

  I suppose so.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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John M. Dlugosz <joh### [at] dlugoszcom> wrote:
: You need a copy of Mathematica!

  But not an illegal one, that's for sure.

: Maybe you can get a special student price?

  AFAIK they don't sell students licenses for mathematica here at TUT. But
I have to ask. Maple is another possibility.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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