Slime <slm### [at] slimelandcom> wrote:

> Unfortunately, POV-Ray has no way to apply a separarely defined spline to a
> sphere_sweep object. Nor can it apply a separate spline to a prism object or
> something of that sort. I think this is a weakness in POV-Ray - it has the
> same data structure represented in different ways depending on what you're
> using it for.
> 
> I understand that the data structures aren't *identical*, but they're darn
> similar and would be much more powerful if they were more portable.

I agree that this would be a handy feature. However, if I remember
correctly, there were no splines in POV-Ray 3.1 on which I based the
sphere_sweep stuff on, so I had to "build my own". Makes for a good
excuse, eh? ;)

However, I think it could be done now, with a bit of rework of the
sphere_sweep syntax. Just let the sphere_sweep take a four-dimensional
spline as input data. I'm not volunteering to do this in the foreseeable
future, though, just in case. ;)

Jochen Lippert

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