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Re: decorative random colors algorithm

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gernot.hoffmann@hs-emden-leer.de wrote:
> Reply for July 4, 2012:
> 
> your decorative graphic looks really nice, congratulations!

I hope you looked (literally) just now, because the originally
uploaded version was mistakenly using different random l,s values
for each line (I'd flipped an if/then/else clause). It's now
fixed, and the sample's using constant l=0.5, s=1.0. And I've added
a %comment after each setrgb showing the corresponding h,l,s values,
just to be sure.

The correct sample graphic now replaces the original erroneous one,
at forkosh.com/decorative4.ps and now shows a nice color fan as expected.
And, of course, the online cgi is corrected and replaced, too.
Sorry about that.

> Using stepwise rendering instead of smooth shading, which requires 
> PostScript 3, has one disadvantage:
> Do you observe in Acrobat thin white lines between the segments?

Actually, I've just been using gv, which shows your stepwise rendering
quite nicely. I'll have to try acrobat when I get to a box that has it.

> These are artefacts created by Acrobat, trying to interpolate a segment
> boundary with respect to a white background. Two solutions:
> 1) Uncheck 'Smooth lineart' in Acrobat. But then the whole image looks 
>   pixelated.
> 2) Render twice. First pass with e.g. 17 segments, second pass with 
>   100 segments. The second pass interpolates as well, but with respect 
>   to an almost correct background. 
>   All my CIE-Diagrams are rendered twice. 

Okay, I'll put that on my to-do list. I think I can modify your code
myself to deal with an N1 and an N2. And I guess the constraint
is to pick them relatively prime, or something like that, so no two
boundaries coincide.

> If you've nothing else to do, you may have a look here:
> http://www.fho-emden.de/~hoffmann/casamunsell24062012.pdf

Excellent. You can never be too rich, or too thin,
or have too many pictures of public toilets.
Actually, your "rosetta stone" german/english page
gave me an opportunity to try to remember my one year
of college german (and three of french). I've spent
several months in france, so have whatever french I know
fairly permanently imprinted. But only a few days in
germany, so couldn't even remember how to ask
where to find ... the public toilet (now I can just
point to the picture).

> Best regards -- Gernot Hoffmann     
Ditto, thanks so much.

-- 
John Forkosh  ( mailto:  j@f.com  where j=john and f=forkosh )

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decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-01 12:15 +0000
  Re: decorative random colors algorithm gernot.hoffmann@hs-emden-leer.de - 2012-07-01 07:59 -0700
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-02 07:58 +0000
      Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-02 12:29 +0000
  Re: decorative random colors algorithm Nobody <nobody@nowhere.com> - 2012-07-01 16:25 +0100
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-02 08:28 +0000
  Re: decorative random colors algorithm gernot.hoffmann@hs-emden-leer.de - 2012-07-03 01:17 -0700
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-03 10:27 +0000
  Re: decorative random colors algorithm gernot.hoffmann@hs-emden-leer.de - 2012-07-03 21:50 -0700
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-04 05:15 +0000
      Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-04 08:01 +0000
  Re: decorative random colors algorithm gernot.hoffmann@hs-emden-leer.de - 2012-07-04 02:20 -0700
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-04 09:51 +0000
      Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-04 10:59 +0000
        Re: decorative random colors algorithm Wally W. <ww84wa@aim.com> - 2012-07-04 09:03 -0400
          Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-04 13:46 +0000
            Re: decorative random colors algorithm Wally W. <ww84wa@aim.com> - 2012-07-04 12:39 -0400
  Re: decorative random colors algorithm gernot.hoffmann@hs-emden-leer.de - 2012-07-04 07:10 -0700
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-04 15:05 +0000
  Re: decorative random colors algorithm gernot.hoffmann@hs-emden-leer.de - 2012-07-04 09:12 -0700
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-05 03:18 +0000
      Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-05 05:54 +0000
        Re: decorative random colors algorithm John Forkosh <forkosh@panix.com> - 2012-07-05 12:23 +0000
  Re: decorative random colors algorithm "Skybuck Flying" <Windows7IsOK@DreamPC2006.com> - 2012-07-05 07:48 +0200
    Re: decorative random colors algorithm JohnF <john@please.see.sig.for.email.com> - 2012-07-05 06:14 +0000
    Re: decorative random colors algorithm Wally W. <ww84wa@aim.com> - 2012-07-05 07:30 -0400

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