From: Roland Thiers <roland.thiers@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: command for a MP graphic
Date: Tue, 7 May 2013 09:30:35 +0200 [thread overview]
Message-ID: <B19DA7FE-010F-4A1E-B350-3277FA2B1A17@gmail.com> (raw)
Hi,
I did this code to get a regular polygon with metafun, it works but I
would like to have an user command like \define or \def
to be able to choose the number of sides, n. I don't know how to do
that ...
\startbuffer[largeurdeslignes]
drawoptions (withpen pencircle scaled 2pt);
\stopbuffer
\startbuffer[polygoneregulier]
numeric u ; u:=1*cm ;
numeric n ; n:=7 ;
pair a[];
a[0]:=(0,3u);
path polygone[] ;
for i=1 upto n :
a[i]:=a[0] rotatedaround(origin,i*360/n) ;
polygone[i]:=a[i-1]--a[i];
draw polygone[i]; endfor;
\stopbuffer
\startbuffer[cercleunite]
draw fullcircle scaled 6u withcolor blue;
\stopbuffer
\define
\polyreg
{\processMPbuffer[largeurdeslignes,polygoneregulier,cercleunite]}
\starttext
\polyreg
\stoptext
Thanks, Roland Thiers
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next reply other threads:[~2013-05-07 7:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-07 7:30 Roland Thiers [this message]
2013-05-07 7:51 ` Marco Patzer
2013-05-07 10:55 ` Roland Thiers
2013-05-07 11:05 ` Wolfgang Schuster
2013-05-07 20:28 ` Roland Thiers
2013-05-08 4:56 ` Wolfgang Schuster
2013-05-08 6:22 ` Roland Thiers
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