Wasn't it Carl Hoff who wrote:
>> > You know how a cone can be
>> > used to connect two spheres to make a shape like you'd get with a
>> > linear sphere_sweep.  I'm trying to connect these two spheres with a
>> > similar shape.
>> >
>> > sphere {<0,0,0>,a1 scale <1,1,b1/a1>}
>> > sphere {<x0,0,0>a2 scale <1,1,b2/a2>}
>> >
>> > Does that make it any clearer what I'm trying to do?
>>
>> It sounds like you are looking for a supercone shape. Look in shapes.inc
>> for a macro for creating these..though you may have a hard time fitting
>> it to the capping ellipsoids. This transformation can not be done
>> directly in POV, you have to use either an isosurface, process a mesh,
>> or do it with CSG and existing primitives.
>
>Thanks everyone.  After spending most of a day with this.  Thanks to
>the help from Mike, I was able to create the isosurface I asked for,
>which as Christopher points out above is (I believe) the same shape
>you can get using a supercone.  Where most of the time was spent
>however was tring to make the shape join smoothly with the capping
>ellipsoids.

That's odd. The isosurface I posted does join smoothly with the two
capping ellipsoids shown above. All you have to do is use the same
values for a1, a2, b1, b2 and x0.


-- 
Mike Williams
Gentleman of Leisure

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