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Images for an ongoing discussion in .unofficial.pathces.
Question is how to make these with the isosurface function.
Made with the following Maple commands:
1: plot3d((1.2)^x * sin(y),x=-8..Pi,y=0..Pi,coords=spherical);
2: plot3d(y,x=0..3*Pi,y=0..3*Pi,coords=toroidal,scaling=constrained);
3:
plot3d(sin(y),x=0..3*Pi,y=0..3*Pi,coords=toroidal,scaling=constrained);
sig.
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Download '3.png' (8 KB)
Preview of image '1.png'
Preview of image '2.png'
Preview of image '3.png'
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Sigmund Kyrre Aas wrote:
>
> Images for an ongoing discussion in .unofficial.pathces.
> Question is how to make these with the isosurface function.
I think you should be looking at the implicit or parametric surface
functions rather than the isosurface function.
see - http://atrey.karlin.mff.cuni.cz/~0rfelyus/povray/index.html
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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From: david sharp
Subject: Re: alternate coordinate systems in iso.s.
Date: 20 Jan 2000 21:21:13
Message: <3887c299@news.povray.org>
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Ken <tyl### [at] pacbell net> wrote in message
news:3887B90D.49355384@pacbell.net...
>
>
> Sigmund Kyrre Aas wrote:
> >
> > Images for an ongoing discussion in .unofficial.pathces.
> > Question is how to make these with the isosurface function.
>
> I think you should be looking at the implicit or parametric surface
> functions rather than the isosurface function.
the way the Maple input lines look, (I don't know Maple at all though)
they look like parametric equations, but since they appear to just
give the 'third' (z) in terms of the other two (x and y), they also are
good candidates for isosurfaces. That is,
parametric {function x,y,f(x,y)}
can be done implicitly as
isosurface{ function{z-f(x,y)}}
if the appropriate coordinate system is implemented.
(in my understanding, isosurface is just a particular type of implicit
surface)
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Thanks for the advice, I'll look into it.
ps Seeing that Klein bottle at your link there made me thinking.. How is
inside/outside defined for that shape? :)
sig.
Ken wrote:
>
> I think you should be looking at the implicit or parametric surface
> functions rather than the isosurface function.
>
> see - http://atrey.karlin.mff.cuni.cz/~0rfelyus/povray/index.html
>
> --
> Ken Tyler - 1300+ 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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