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On Wed, 14 Jan 1998 20:53:43 -0800, "Ken Cecka" <cec### [at] televar com>
wrote:
>I'm a little behind the times on this posting, so I decided not to reply to
>the former thread, but start a new one. On Dec. 27th, Tim Grubb asked about
>adding persistent variables to POV. It turns out that POV is already
>capable of them in a round about sort of way. I actually saw this technique
>used in a tree include file a long time ago, but I don't recall who wrote
>it. Anyway, you can achieve persistent variables through the debug stream.
>Redirect the debug output to a file, and write out your variables in the
>form of #declare's to the file. Then include that file to get the previous
>value. I guess an example is the easiest way to demonstrate. I'll attatch
>persistent.ini and persistent.pov. They are just a test of the idea, and in
>no means robust, but I imagine a fairly comprehensive include file could be
>written for this type of thing. Even if not, it's pretty easy to impliment
>in a scene.
>
>Ken
>
As an expansion on your idea, POV-Ray 3.1 will have #fopen, #write,
#read, and #fclose.
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