randomize a color

randomize a color

[Johan Sandblom]

The following produces one red square and two black ones, as opposed
to one red and two randomly perturbed but also red ones I was hoping
for. To my poor understanding this usage seems to comply with that
defined in mp-tool.mp. What am I doing wrong.

Regards, Johan

\setupcolors[state=start]
\definecolor[tilered][r=.425, g=0, b=0]
\definecolor[smudge][r=.1, g=.1, b=.1]

\defineoverlay[page][\useMPgraphic{page}]
\setupbackgrounds[page][background=page]

\startuseMPgraphic{page}
fill unitsquare scaled 2cm withcolor \MPcolor{tilered} ;
fill unitsquare
  scaled 2cm
  shifted (2cm,0cm)
  withcolor \MPcolor{tilered} randomized .1 ;
fill unitsquare
  scaled 2cm
  shifted (4cm,0cm)
  withcolor \MPcolor{tilered} randomized \MPcolor{smudge} ;
\stopuseMPgraphic

\starttext

test

\stoptext
--
Johan Sandblom  N8, MRC, Karolinska sjh
t +46851776108  17176 Stockholm
m +46735521477  Sweden
"What is wanted is not the will to believe, but the
will to find out, which is the exact opposite"
- Bertrand Russell

Re: randomize a color

[Taco Hoekwater]

Johan Sandblom wrote:
> The following produces one red square and two black ones, as opposed
> to one red and two randomly perturbed but also red ones I was hoping
> for. To my poor understanding this usage seems to comply with that
> defined in mp-tool.mp. What am I doing wrong.

hint: your redpart gets a random value between 0 and 0.0425

Cheers, taco

Re: randomize a color

[Johan Sandblom]

Well, being stupid isn't much fun, you know. One of the few
consolations is bothering knowledgable people with questions that you
are unable to figure out the (albeit obvious) answer to ...

Thank you, Johan

2006/3/6, Taco Hoekwater <taco@elvenkind.com>:
>
>
> Johan Sandblom wrote:
> > The following produces one red square and two black ones, as opposed
> > to one red and two randomly perturbed but also red ones I was hoping
> > for. To my poor understanding this usage seems to comply with that
> > defined in mp-tool.mp. What am I doing wrong.
>
> hint: your redpart gets a random value between 0 and 0.0425
>
> Cheers, taco
>


--
Johan Sandblom  N8, MRC, Karolinska sjh
t +46851776108  17176 Stockholm
m +46735521477  Sweden
"What is wanted is not the will to believe, but the
will to find out, which is the exact opposite"
- Bertrand Russell