The people in this group are so helpful I can hardly stand
it.  So, before I start, thanks!  

-=-=-=-=-=-

I'm trying to make something like this:
    http://samarkand.net/Web_store/Html/Images/20F_foot.jpg

I tried to make a sphere and cut it with toroids... I got
this and this:
    http://www.voltar.org/tmp/goban2.snaps/colorballs.png
    http://www.voltar.org/tmp/goban2.snaps/wronglegs.png

It's rough, obviously, but clearly isn't the shape I was
going for. :) In fact, CSG may be the wrong approach
entirely.  Though, I have made some complicated things with
CSG:
    http://www.voltar.org/povray/lightsaber-030321160919.png
    http://www.voltar.org/povray/warhammer-0302281425.png

-=-=-=-=-=-

What I can't figure is how to do those little ridges on the
20F_foot.

1) Any suggestions to get to my 20F_foot welcome --
especially CSG methods?

2) What mesh editors are popular for this sort of thing?  I
got both wings3d and pygmalion working, but I don't appear
to be any good at all with 3d (totally incompetant actually)
modeling UIs.


-- 
If riding in an airplane is flying, then riding in a boat is swimming.
41 jumps, 8.9 minutes of freefall, 19.2 ff vertical miles.

Post a reply to this message

On 19 Aug 2003 10:27:33 -0400, Jettero Heller <pov### [at] voltar-confedorg>
wrote:
> I'm trying to make something like this:
>    http://samarkand.net/Web_store/Html/Images/20F_foot.jpg

This reminds me this image:
http://www-public.tu-bs.de:8080/~y0013390/pov/ic/sample09.jpg
I you think it looks similar jump to:
http://www.tu-bs.de/~y0013390/pov/ic/

ABX

Post a reply to this message

Yes, this looks very promising.  I'm going to try some of
this stuff out later for sure.

In article <jud4kv8h9f4k714mq2m1e86e9a6dioaril@4ax.com>, ABX wrote:
> This reminds me this image:
> http://www-public.tu-bs.de:8080/~y0013390/pov/ic/sample09.jpg


-- 
If riding in an airplane is flying, then riding in a boat is swimming.
41 jumps, 8.9 minutes of freefall, 19.2 ff vertical miles.

Post a reply to this message

"Jettero Heller" <pov### [at] voltar-confedorg> wrote in message
news:slr### [at] corkyvoltar-confedorg...
>

<snip>

As ABX suggested, iso-wotsits are certainly one way to go, but may be slow.

Your original idea of a CSG of torii and sphere looks like the right way to go.
For example,

#declare myTorus = torus{1, 0.5}

difference{
  sphere{0,1.25}
  #declare YRot = 0;
  #while(YRot < 180)
    object{myTorus rotate z*90 scale<1,1.5,1> rotate y*YRot translate y*1}
    #declare YRot = YRot + 15;
  #end

  pigment{Yellow}
}

shows possibilities....

Post a reply to this message

On 19 Aug 2003 10:27:33 -0400, Jettero Heller <pov### [at] voltar-confedorg> wrote:


>2) What mesh editors are popular for this sort of thing? 

You could try Moray
http://www.stmuc.com/moray/index.html

Moray is a shareware program and must be registered after a trial period of 30
days. It costs EUR 80 and it is well worth it as it is made specifically for
PovRay.

Regards
        Stephen

Post a reply to this message

> Your original idea of a CSG of torii and sphere looks like the right way to go.
> For example,
>
> shows possibilities....

Doh!  Ok, I'm not going to look at mesh objects much then,
this is probably what I wanted.  I did this while I was on
lunch...  Clearly wrong, but later on I can make my legs
with it.  

http://www.voltar.org/tmp/goban2.snaps/wrongleg2.png

I had considered scaling my colored torii, but didnt think I
could get that to work right. Did you just guess on the
ratio?  Or do you know some sphericaltorid math properties
that I don't?

Anyway, thanks. :)

-- 
If riding in an airplane is flying, then riding in a boat is swimming.
41 jumps, 8.9 minutes of freefall, 19.2 ff vertical miles.

Post a reply to this message

> You could try Moray

Oooo, that _is_ neat.

It definitely looks like it's worth trying.  If I work up
the energy to install something on my windows machine I
might check that out too.

Any idea if the user interface is easier to figure out than
wings3d and pygmalion?  Moray looks like it might be beyond
my skill level too.

So far I've done all my pov images in vim.

-- 
If riding in an airplane is flying, then riding in a boat is swimming.
41 jumps, 8.9 minutes of freefall, 19.2 ff vertical miles.

Post a reply to this message

On 19 Aug 2003 12:49:23 -0400, Jettero Heller <pov### [at] voltar-confedorg> wrote:


>Any idea if the user interface is easier to figure out than
>wings3d and pygmalion?  

I've tried wings3d and IMO Moray is much easier to use. It's quite intuitive,
uses a lot of the standard PovRay primitives, sweeps, lights etc. It exports a
PovRay file that can be tweaked and animated. It is supported by many plugins,
including an animation one, if your interests lie in that direction. There is a
new version in Beta test just now which should be even better. This server has
news groups dedicated to it. 

>Moray looks like it might be beyond
>my skill level too.

After looking at you Light Sabre and war hammer, I doubt it is beyond you.  

Regards
        Stephen

Post a reply to this message

For gobans I made, I used isosurface objects:

Two half of sine a sphere for the foot:

  function {sqrt( x*x + y*y + z*z ) - .9 + abs(sin( 4*atan2(x, z) )*0.1)}

(the two half spheres are on top of each other and top one is scaled 
down along y).

One sine-cylinder for the leg:
  function {sqrt(x*x + z*z) - 0.9 + abs(sin(4*atan2(x, z))*0.1)}


I will post the image in p.b.i so you can see the result.


Nicolas




Jettero Heller wrote:
> The people in this group are so helpful I can hardly stand
> it.  So, before I start, thanks!  
> 
> -=-=-=-=-=-
> 
> I'm trying to make something like this:
>     http://samarkand.net/Web_store/Html/Images/20F_foot.jpg
> 
> I tried to make a sphere and cut it with toroids... I got
> this and this:
>     http://www.voltar.org/tmp/goban2.snaps/colorballs.png
>     http://www.voltar.org/tmp/goban2.snaps/wronglegs.png
> 
> It's rough, obviously, but clearly isn't the shape I was
> going for. :) In fact, CSG may be the wrong approach
> entirely.  Though, I have made some complicated things with
> CSG:
>     http://www.voltar.org/povray/lightsaber-030321160919.png
>     http://www.voltar.org/povray/warhammer-0302281425.png
> 
> -=-=-=-=-=-
> 
> What I can't figure is how to do those little ridges on the
> 20F_foot.
> 
> 1) Any suggestions to get to my 20F_foot welcome --
> especially CSG methods?
> 
> 2) What mesh editors are popular for this sort of thing?  I
> got both wings3d and pygmalion working, but I don't appear
> to be any good at all with 3d (totally incompetant actually)
> modeling UIs.
> 
>

Post a reply to this message

"Jettero Heller" <pov### [at] voltar-confedorg> wrote in message
news:slr### [at] corkyvoltar-confedorg...

> could get that to work right. Did you just guess on the
> ratio?  Or do you know some sphericaltorid math properties
> that I don't?

Pure guesswork and a dozen or more different rotation/scaling/radius
settings, plus a general hunch that it was possible. To be honest, I'm still
not entirely sure what's happening in my code (but I haven't looked to
closely).

I know from experience that very ornate shapes are easy to conjure out of
CSG if you just let things happen and wrap some generation code in a loop or
two.

Post a reply to this message