Wasn't it Dave! who wrote:
>Mike Williams <nos### [at] econymdemoncouk> wrote:
>> Wasn't it Dave! who wrote:
>> >What I actually want to do is something like this:
>> >
>> >cone {
>> ><0,0,0>, 1 scale <1,1,1.5>
>> ><0,1,0>, 1 scale <1,1,2.5>
>> >}
>> >
>> >I know that this isn't proper syntax, but I hope it illustrates what I'm
>> >after.  The endcaps each have a different radius, but the scaling for the
>> >two endcaps is different.  Can this be done?
>>
>> I think the proper syntax for that is
>>
>> #include "shapes.inc"
>> object{ Supercone(<0,0,0>, 1, 1.5 , <0,1,0>, 1 2.5)}
>>
>> but I don't think that it actually achieves your objective.
>
>Hmm--I'll mess around with it this evening.  Thanks to you both for your
>insight.  I'll let you know how things turn out.
>
>Is there a good online tutorial for isosurfaces?  I didn't have much luck
>with the POV-Ray help docs.

This was one of the rare occasions where I managed to resist immediately
suggesting an isosurface solution. Perhaps this bit of my isosurface
tutorial might help:

<http://www.econym.demon.co.uk/isotut/splines.htm#twolathe>

-- 
Mike Williams
Gentleman of Leisure

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