POV-Ray : Newsgroups : povray.newusers : Spiral Server Time
5 Sep 2024 16:17:23 EDT (-0400)
  Spiral (Message 1 to 7 of 7)  
From: Wolfgang Manousek
Subject: Spiral
Date: 19 Sep 2000 14:23:41
Message: <39c7af2d@news.povray.org>
no clue on my side ... how would I create a spiral in POV ... just doesn't
map into any CSG object ...

Wolfgang


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From: Steve
Subject: Re: Spiral
Date: 19 Sep 2000 16:49:17
Message: <slrn8sfiso.v54.steve@zero-pps.localdomain>
On Tue, 19 Sep 2000 11:23:37 -0700, Wolfgang Manousek wrote:
>no clue on my side ... how would I create a spiral in POV ... just doesn't
>map into any CSG object ...

In p.b.s-f see David Fontain's message "Big scene file: spiralforest",
just do a search on subject for spiral in that group.  I'm sure there
are easier ways of doing this with an isosurface.

-- 
Cheers
Steve              email mailto:ste### [at] zeroppsuklinuxnet

%HAV-A-NICEDAY Error not enough coffee  0 pps. 

web http://www.zeropps.uklinux.net/

or  http://start.at/zero-pps

  9:06pm  up 29 days,  1:19,  2 users,  load average: 1.25, 1.11, 1.03


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From: Chris Huff
Subject: Re: Spiral
Date: 19 Sep 2000 16:52:30
Message: <chrishuff-DF427C.15543019092000@news.povray.org>
In article <39c7af2d@news.povray.org>, "Wolfgang Manousek" 
<wol### [at] no_spamcom> wrote:

> no clue on my side ... how would I create a spiral in POV ... just doesn't
> map into any CSG object ...

1: Use a bunch of cylinders, spheres, torus segments, or combinations of 
these to approximate the shape of the spiral. Use a loop to place them 
automatically
2: Similar to the above, generate a bunch of triangles to approximate 
the object.
3: Use an include file or macro to do one of the above. There are 
several around.
4: Make the spiral out of a sphere_sweep object in MegaPOV.
5: Make an isosurface or parametric shape to do what you want.

I probably left a couple possibilities out...a more specific answer will 
require a more specific description of what you are trying to do.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><


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From: Wolfgang Manousek
Subject: Re: Spiral
Date: 19 Sep 2000 18:03:23
Message: <39c7e2ab$1@news.povray.org>
thanks for the answers ...
darn' ;-) I was hoping there is a simple way I missed ... I will try some of
the macros (and wait for POV3.5) for the 'sweep' option)

Wolfgang


"Wolfgang Manousek" <wol### [at] no_spamcom> wrote in message
news:39c7af2d@news.povray.org...
> no clue on my side ... how would I create a spiral in POV ... just doesn't
> map into any CSG object ...
>
> Wolfgang
>
>


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From: Ken
Subject: Re: Spiral
Date: 19 Sep 2000 21:27:51
Message: <39C811E9.BDBE3658@pacbell.net>
Wolfgang Manousek wrote:
> 
> no clue on my side ... how would I create a spiral in POV ... just doesn't
> map into any CSG object ...

http://www.povray.org/links/3D_Programs/Shells_Spirals_and_Helixes/

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: David
Subject: Re: Spiral
Date: 19 Sep 2000 21:58:10
Message: <B5ED6806.23A3%davidmccabe@mac.com>
Try using two hight fields. Draw a spiral, save it, flip it around and save
an other copy. In POV, set one upside-down below the other, and use water
level to take out the flat part. I havn't tested it, but it soundes okay.

> From: Ken <tyl### [at] pacbellnet>
> Organization: Tyler Engineering Services
> Reply-To: lin### [at] povrayorg
> Newsgroups: povray.newusers
> Date: Tue, 19 Sep 2000 18:24:57 -0700
> Subject: Re: Spiral
> 
> 
> 
> Wolfgang Manousek wrote:
>> 
>> no clue on my side ... how would I create a spiral in POV ... just doesn't
>> map into any CSG object ...
> 
> http://www.povray.org/links/3D_Programs/Shells_Spirals_and_Helixes/
> 
> -- 
> Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Mike Williams
Subject: Re: Spiral
Date: 20 Sep 2000 00:43:15
Message: <dAnMNAARRCy5EwOU@econym.demon.co.uk>
Wasn't it Wolfgang Manousek who wrote:

>no clue on my side ... how would I create a spiral in POV ... just doesn't
>map into any CSG object ...

You can build one out of lots of smaller objects (such as smooth
triangles, spheres, cylinders, blobs or parts of tori) or use MegaPOV's
"spiral" isosurface (see http://www.econym.demon.co.uk/isotut/builtin1.h
tm).

-- 
Mike Williams
Gentleman of Leisure


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