Wasn't it SharkD who wrote:
>Warp <war### [at] tagpovrayorg> wrote:
>> SharkD <nomail@nomail> wrote:
>> > I was wondering if there were a quicker alternative that I hadn't 
>> >thought of?
>>
>>   You could always try to create a triangle mesh from those functions.
>> The code will be quite complicated, but the result will render extremely
>> fast.
>>
>> --
>>                                                           - Warp
>
>Thanks, that's a good idea. I was hoping to avoid doing this though, as it's a
>bit more involved.

There's a macro by Ingo Janssen that creates a mesh2 of smooth triangles 
from a set of parametric equations. It's an awful lot faster than 
parametric isosurfaces, and you can save the mesh to a file.

See: http://www.econym.demon.co.uk/isotut/param.htm

-- 
Mike Williams
Gentleman of Leisure

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