In article <38fe4f71@news.povray.org>, "Chris Colefax" 
<chr### [at] tagpovrayorg> wrote:

> Finally, I believe Chris Huff has done some work along these lines, using
> isosurfaces.  His messages should still be accessible on the server, as
> should he...

Hmm, I haven't done anything directly related to this...but my proximity 
pattern could do the job easily. I wouldn't use it directly, it is too 
slow, but it would be simple to use it with eval_pattern() to write data 
into an array or a file(preferably a file, so you don't have to 
recalculate it every time you parse the file) and use that as the input 
for an isosurface.

Another possibility would be to use the blob pattern. It currently only 
supports spheres and cylinders, but could easily be extended to do 
toruses, cones, boxes, etc...even isosurface functions could be 
included. It doesn't require the 3D density stage, it is fast enough 
as-is(although there are some optimizations that could be done). I got a 
nice "corroded metal" look by using turbulence on the blob pattern in an 
isosurface.

And finally, you could use Lummox JR's isoblob patch, which is kind of a 
cross between isosurfaces and blobs. I haven't done anything with it, 
but it looks quite good.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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