Stefan,

The attached spiro.pov is a slightly later version of the previous with 
macro-ized xy coordinate handling.
More to the point, I realized that hooking cylinders together gets messy at 
the edges especially when they're fat. The smart fix was to have cylinders 
and spheres with a sphere at the end (and beginning) of the chain of 
cylinders. This produces a seamlessly articulated chain. Perhaps I'm just 
too dumb/lazy to figure out how to build a really long and convoluted 
spline. Anyway the psychedelic doily seems to work fine except for what 
looks like an occasional math glitch. And the problem of counting the 
appropriate number of revolutions to complete the circuit.

DLM



"Stefan Viljoen polard.com>" <sviljoen@<removethis> wrote in message 
news:4294a5b3@news.povray.org...
> dlm spake:
>
>> Stefan,
>> What can I say? Transmogrified!
>> I really like the rhythm and colour of those opalescent pearls.
>> Next thing we'll have perlemoen!
>> DLM
>
> Sure, Meneer DLM!
>
> Thanks for the pointers you gave me - the whole base idea for the image 
> was
> something that popped up into that empty void between my ears when I 
> looked
> at the modified code you sent me. I've made something else that more
> directly implements your cylinders-between-points idea that is rendering
> currently - I will soon post it and one other image that is derived from
> the code you sent me.
>
> Thanks for taking the time to look,
>
> Lekker bly!
> -- 
> Stefan Viljoen
> Software Support Technician / Programmer
> Polar Design Solutions

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Attachments:
Download 'spiro.pov.txt' (3 KB) Download 'spiro.jpg' (166 KB)

Preview of image 'spiro.jpg'