POV-Ray : Newsgroups : povray.binaries.programming : An updated povr tarball for Unix/Linux. 1984d6ea : Re: An updated povr tarball for Unix/Linux. 1984d6ea Server Time
18 Aug 2022 15:32:47 EDT (-0400)
  Re: An updated povr tarball for Unix/Linux. 1984d6ea  
From: William F Pokorny
Date: 12 Jun 2021 11:48:11
Message: <60c4d73b$1@news.povray.org>
On 6/9/21 11:46 AM, jr wrote:
> hi,
> William F Pokorny <ano### [at] anonymousorg> wrote:
>> ...
>> Yep, rtr is cool and I hope use it (or similar) for more than demos -
>> eventually.
>> ...
>> Just need to work out how to capture each rendered frame to an image file...
> may be 'xwd' (and 'xwud') can help?  not sure how you'd automate the syncing
> though.

Yeah, maybe. A long while back now, I did play a little with xwd - stand 
alone just snapping a paused preview window. Hit some issue that looked 
to be related to quantization or a shift of color values. I could not 
quickly sort it and I dropped the work - work that's been on the floor a 
long while now. In truth it's 'play' down my list at the moment - 
though(1) ;-).

I 'believe' in rtr much of the work needed to create an output image is 
still done for each frame, perhaps I just need to figure out how to 
pause and trigger a write to unique output files. Oh, and some way to 
run through all the cameras only once I guess.

Bill P.

(1) - Banging around my head of late is the idea that with functions we 
can perhaps create a collection of inbuilts that query generic 
environmental information and return a 'change-this' result(1a) which 
could be used during the render of each frame. With >= v3.8 we have 
stuff like user_defined cameras, pigments and densities(media)... We 
have longer had stuff like isosurfaces, parametrics. Supposing such a 
collection of inbuilt functions, might we be able to change quite a lot 
more stuff frame to frame in rtr? Arbitrarily fly about a scene with a 
couple user defined camera definitions which are no longer static?

(1a) - Expect too might need f_delay, f_pause_resume like inbuilt 
functions rather than just functions that might query the state of 
values in some file say. Guess f_delay might be useful all by itself.

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