Nieminen Juha wrote:
> 
> Peter Popov <pet### [at] usanet> wrote:
> : Let's cook some donuts (ways to make a torus):
> 
> : lathe/sor
> 
>   You can't make a torus with a sor.

Well don't get sor about it !

-- 
Ken Tyler

See my 850+ Povray and 3D Rendering and Raytracing Links at:
http://home.pacbell.net/tylereng/index.html

Post a reply to this message

EGADS!  IT'S A PUN!  KILL IT, KILL IT!!!  :O

--
Lance.

(P.S. u could resort to patches...)

---
For the latest 3D Studio MAX plug-ins, images and much more, go to:
The Zone - http://come.to/the.zone
For a totally different experience, visit my Chroma Key Website:
Colorblind - http://listen.to/colorblind
Ken wrote in message <37D4FB72.DA4FAB0F@pacbell.net>...
>
>
>Nieminen Juha wrote:
>>
>> Peter Popov <pet### [at] usanet> wrote:
>> : Let's cook some donuts (ways to make a torus):
>>
>> : lathe/sor
>>
>>   You can't make a torus with a sor.
>
>Well don't get sor about it !
>
>--
>Ken Tyler
>
>See my 850+ Povray and 3D Rendering and Raytracing Links at:
>http://home.pacbell.net/tylereng/index.html

Post a reply to this message

Lance Birch wrote:
> 
> EGADS!  IT'S A PUN!  KILL IT, KILL IT!!!  :O

They monitor these groups,
On the lookout for Ken,
But that Povray Punster,
Has struck once again.

-- 
Ken Tyler

See my 850+ Povray and 3D Rendering and Raytracing Links at:
http://home.pacbell.net/tylereng/index.html

Post a reply to this message

Peter Popov <pet### [at] usanet> wrote

>
> Todoidal magnetic lines? Did you just say that?

    If I did, I must have had my pwingerds in ny noudth! 8-)

>I think I can help you
> :) With the invaluable help of Axel Hecht I was able to create a macro
> which calculates the magnetic field vector and intensity in any point
> in space. The macro needs a PCM1 file as input but a torus mesh can be
> easily created with SPatch or anything else you can think of.
>

    EEEeeeikes! I still have that migraine, dude, all I can think of is Ice
Packs! But if you think it will help I would be anxious to see it. I was
planning on making layers of toroidal densities and laying some crackle
media on them.

Post a reply to this message

On 7 Sep 1999 06:35:38 -0400, Nieminen Juha <war### [at] cctutfi> wrote:

>  You can't make a torus with a sor.

I stand corrected. Not with a single sor, that is. You can make a
torus using CSG and two sors.


Peter Popov
ICQ: 15002700

Post a reply to this message

Peter Popov <pet### [at] usanet> wrote in message
news:YEHTN98AgfONAna9Zlxr9xZUrTnB@4ax.com...
> Here's a formula that John VanSickle gave me when I was looking for a
> way to make toroidal media:
>
> sqrt( y*y + (sqrt(x*x+z*z)-1)*(sqrt(x*x+z*z)-1) )
>
> This makes a torus of major and minor radii 1. Some tweaking of the
> frequency and phase keywords might be necessary. Enjoy.
>

    I am having the same problem with this that I have had with other
formulas. It appears to make an intersection of two spheres with a sphere
punched out of the middle.

    This make a good torus in an Isosurface statement, but chops off the
inner curve in media. I tried laying it over a spherical and cylindrical
density and playing with the density in a color_map but all that gave me was
a faded convex edge (see p.b.i.)

    Did you have any better results with media?

Post a reply to this message

Never mind....
    ...contain it in a torus of the same size and then use color_map to take
away rings....



Bill DeWitt <the### [at] earthlinknet> wrote in message
news:37d5af71@news.povray.org...
>
> Peter Popov <pet### [at] usanet> wrote in message
> news:YEHTN98AgfONAna9Zlxr9xZUrTnB@4ax.com...
> > Here's a formula that John VanSickle gave me when I was looking for a
> > way to make toroidal media:
> >
> > sqrt( y*y + (sqrt(x*x+z*z)-1)*(sqrt(x*x+z*z)-1) )
> >
> > This makes a torus of major and minor radii 1. Some tweaking of the
> > frequency and phase keywords might be necessary. Enjoy.
> >
>
>     I am having the same problem with this that I have had with other
> formulas. It appears to make an intersection of two spheres with a sphere
> punched out of the middle.
>
>     This make a good torus in an Isosurface statement, but chops off the
> inner curve in media. I tried laying it over a spherical and cylindrical
> density and playing with the density in a color_map but all that gave me
was
> a faded convex edge (see p.b.i.)
>
>     Did you have any better results with media?
>
>
>
>

Post a reply to this message

On Tue, 7 Sep 1999 21:14:16 -0400, "Bill DeWitt"
<the### [at] earthlinknet> wrote:

>Never mind....
>    ...contain it in a torus of the same size and then use color_map to take
>away rings....

That's what I do, or you can try (if the 'min' function works for
isisurfaces)

min (1, sqrt( y*y + (sqrt(x*x+z*z)-1)*(sqrt(x*x+z*z)-1) ))

John sent mi this function per my request for a toroidal 'wood'
pattern, so it's not clipped like the cylindrical or spherical
patterns are. The change applied above should make it a unity toroidal
pattern clipped to 1.


Peter Popov
ICQ: 15002700

Post a reply to this message

Peter Popov <pet### [at] usanet> wrote:
: I stand corrected. Not with a single sor, that is. You can make a
: torus using CSG and two sors.

  How?

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

Post a reply to this message

On 8 Sep 1999 07:06:21 -0400, Nieminen Juha wrote:
>Peter Popov <pet### [at] usanet> wrote:
>: I stand corrected. Not with a single sor, that is. You can make a
>: torus using CSG and two sors.
>
>  How?

Difference between the "outside" part - shaped a bit like a flattened
sphere - and the "inside" part - shaped somewhat like a one-sheet 
hyperboloid.

Post a reply to this message