POV-Ray : Newsgroups : povray.advanced-users : Creating Spheres of Triangles : Re: Creating Spheres of Triangles Server Time
30 Jul 2024 18:12:04 EDT (-0400)
  Re: Creating Spheres of Triangles  
From: Lars W 
Date: 3 Jul 1999 15:33:31
Message: <377e658b@news.povray.org>
Thanks for the tip, i see what i can get out of the Programm that Ken sends
me, and if
it doesn't work in any way i would be happy for an example from you.

greetings Lars


Lance Birch <lan### [at] usanet> schrieb in im Newsbeitrag:
377c0f03@news.povray.org...
> >: I wan't to construct an Sphere out of triangles ,( i know the standard
> >: POV-Sphere is faster and better and
> >: so on, but i need a trianglesphere ), does anybody know of resources,
or
> has
> >: an tutorial by him self
> >: for doing that. it should be possible to say, how complex the sphere
> should
> >: be, and it should
> >: NOT look like an globe, best would be an sphere out of evenly sized
> >: triangles.
> >
> >  Distributing objects evenly on the surface of a sphere is a non-trivial
> >task.
> >  If making a earth-looking globe (with latitude and longitude lines) is
> >enough, that's pretty easy with povray (you need some math, though).
>
> But the triangles won't be the same sizes right?
>
> If you really want to do it perfectly you can use a geosphere with a
> geodesic base type of a 20-sided icosahedron.  The facets are all equally
> sized equilateral triangles.  From there the sphere can be divided into
any
> number of segments based on multiples and divisions of the 20 faces.
>
> Right?
>
> Alternatively you could try a polyhedron base type like a tetrahedron or
> octahedron (all of which can be made as spacial spherical subdivisions)
but
> these won't look as even as the icosahedron will.
>
> If you want I can post an example of such an object.
>
> --
> Lance.
>
>
> ---
> 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
>
>


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