POV-Ray : Newsgroups : povray.beta-test : POV-Ray v3.8.0-beta 1 - Parse error using "%s" in Win10 : Re: POV-Ray v3.8.0-beta 1 - Parse error using "%s" in Win10 Server Time
24 May 2024 13:16:21 EDT (-0400)
  Re: POV-Ray v3.8.0-beta 1 - Parse error using "%s" in Win10  
From: jr
Date: 26 Jul 2021 04:40:00
Message: <web.60fe73a3e398ba995e0fed26cde94f1@news.povray.org>

clipka <ano### [at] anonymousorg> wrote:

I thank you for the (detailed) clarification re status of "%s" (and yr time).  I
dug up a PDF (N1256, Committee Draft 7.9.2007) and was shocked (sort of) to find
no mention of "%s".

and also a big thank you for writing "..in POV-Ray, `now` already is a numeric
value..", this has cleared up a complete misunderstanding.  the documentation
says 'now' is a "keyword" and only illustrates its use in a 'datetime()' call.
I had not realised that 'now' can be used outside 'datetime()'.  :-)  so the
demo scene TdG mentioned simply needs a (fairly) reliable unique seed for the
RNG, whenever it's rendered.  made a couple of quick tests with 'now', and am
thinking of using something like the following to replace the
'datetime(now,"%s")', and would appreciate comment(s):

#declare seed_ = mod((now-int(now))*1e16,1e9);

> It might be worth weaving the following information into the
> documentation of our "datetime" function:

and perhaps improve description of 'now'.

regards, jr.

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