Wasn't it Fuzzy who wrote:
>Hi,
>
>I've created a cylinder with a difference taken from it of many smaller
>cylinders to punch 'holes' into the surface and it takes *forever* to
>render...
>at quality 1 it took just over 7 HOURS to render a very simple image at only
>640x480!  (this is using 676 cutout cylinders to make 1352 'holes', as the
>smaller cylinders were extended larger than the diameter of the main
>cylinder to require half as many :)
>
>I've started another run at quality 9... it's taken 6 hours so far and is
>only up to line 99 of 480...
>
>I know that CSG is slow but... :)
>
>I think if I did the 'holes' as a texture map instead then it would be a LOT
>faster, but is there any way to create a texture on the fly within pov,
>rather than having to create some jpg or other to use as a filter?
>
>(I want to be able to do it on the fly as I want to be able to change the
>shape of the holes, cylinders was only going to be the start...)
>
>Fuzzy


If you ever try to construct an object that has a lot of holes in
POVRay, you'll find that it renders incredibly slowly. My Holes Tutorial
attempts to explain why this happens and suggests something that you
might be able to do about it.

<http://www.econym.demon.co.uk/holetut/>

-- 
Mike Williams
Gentleman of Leisure

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