From: Mikael Sundqvist <mickep@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: randomize direction of arrow in metafun
Date: Sat, 15 May 2021 14:42:24 +0200 [thread overview]
Message-ID: <CAHy-LL_9n-Cxu__4gV9kAefjku=dW58Lk24gqqmhaax++7XaGA@mail.gmail.com> (raw)
In-Reply-To: <d4738abc-d443-918d-3a3b-328056a841ec@uni-bonn.de>
Hi,
you could do something like this:
\startMPpage
for i = 0 upto 10:
drawarrow if uniformdeviate(1)<0.5: reverse fi ((0,0)--(2cm,0)) yshifted i*cm;
endfor;
\stopMPpage
/Mikael
On Sat, May 15, 2021 at 2:30 PM Thomas A. Schmitz
<thomas.schmitz@uni-bonn.de> wrote:
>
> Hi all,
>
> for a slide template, I want to draw colored arrows in a randomized
> color (from a list of colors). This works (and the code is far too
> clever for me, I must have copied it somewhere):
>
> save mycolor ; color mycolor[] ;
> mycolor[1] := (0.2, 0.3, 0.4) ;
> mycolor[2] := (0.6, 0.6, 0.4) ;
> mycolor[3] := (0.5, 0.8, 0.5) ;
>
> so I can write
>
> drawarrow p withcolor mycolor[round(uniformdeviate(9))] ;
>
> But I also want the direction of the arrow to be random. My first idea
> was to define a variable that would expand either to "reverse" or the
> empty string right after drawarrow, but that's where I'm stuck. Anyone
> has an idea how to achieve this? (It's probably somewhere in the source,
> but I can't find it.) And is the method of defining the random color OK,
> or could this also be improved.
>
> Thanks, and all best
>
> Thomas
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If your question is of interest to others as well, please add an entry to the Wiki!
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___________________________________________________________________________________
next prev parent reply other threads:[~2021-05-15 12:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-15 12:30 Thomas A. Schmitz
2021-05-15 12:42 ` Mikael Sundqvist [this message]
2021-05-15 13:02 ` Thomas A. Schmitz
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