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Hi,
I started interfacing Povray to my 3D viewer and I really
enjoy it! Most objects are quite easy to build with CSG
except one: a ribbon in 3D space.
What I would like to do is using a prism but instead of
giving two heights, I would like to use 3D spline to sweep
the shape along a defined curve.
Is there an easy way to model such an object in Povray?
Thanks in advance for any help.
Matthias
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Matthias Rarey wrote:
>
> Hi,
>
> I started interfacing Povray to my 3D viewer and I really
>
> enjoy it! Most objects are quite easy to build with CSG
>
> except one: a ribbon in 3D space.
>
> What I would like to do is using a prism but instead of
>
> giving two heights, I would like to use 3D spline to sweep
>
> the shape along a defined curve.
>
> Is there an easy way to model such an object in Povray?
>
> Thanks in advance for any help.
>
> Matthias
Check this out: http://members.xoom.com/dvarrazzo/epov.htm
--
Ken Tyler - 1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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Bicubic patches may be the answer.
If you don't know how to make them by hand, use a modeller like spatch.
--
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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Matthias Rarey wrote:
>
> Hi,
>
> I started interfacing Povray to my 3D viewer and I really
>
> enjoy it! Most objects are quite easy to build with CSG
>
> except one: a ribbon in 3D space.
See also: http://povobjects.virtualave.net/cgi-bin/objlist.cgi?/others/
--
Ken Tyler - 1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Post a reply to this message
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![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
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![](/i/fill.gif) |
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![](/i/fill.gif) |
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Matthias Rarey wrote:
> Hi,
>
> I started interfacing Povray to my 3D viewer and I really
>
> enjoy it! Most objects are quite easy to build with CSG
>
> except one: a ribbon in 3D space.
>
> What I would like to do is using a prism but instead of
>
> giving two heights, I would like to use 3D spline to sweep
>
> the shape along a defined curve.
>
> Is there an easy way to model such an object in Povray?
>
> Thanks in advance for any help.
>
> Matthias
Chris Colefax's Spline macro would do this quite nicely.
Steve
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