From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>,
Aditya Mahajan <adityam@umich.edu>
Subject: Re: Metafun: setting pen size in properties
Date: Mon, 24 Jul 2017 10:26:25 +0200 [thread overview]
Message-ID: <66846094-ca3a-4e8d-89a2-f7423893f0a9@wxs.nl> (raw)
In-Reply-To: <alpine.OSX.2.02.1707231931440.36563@nqv-znpobbx>
On 7/24/2017 1:40 AM, Aditya Mahajan wrote:
> Hi,
>
> Is it possible to set pen width using properties(...)? The following
> does not work (the color is set, but not the pen width):
>
> \starttext
> \startMPcode
> property p[] ;
> p[1] := properties(withcolor red withpen pencircle scaled 1bp);
> p[2] := properties(withcolor blue withpen pencircle scaled 10bp);
>
> draw fullcircle scaled 1cm withproperties p[1];
> draw fullcircle scaled 2cm withproperties p[2];
> \stopMPcode
> \stoptext
def withproperties expr p =
if colormodel p = 3 :
withcolor greypart p
elseif colormodel p = 5 :
withcolor (redpart p,greenpart p,bluepart p)
elseif colormodel p = 7 :
withcolor (cyanpart p,magentapart p,yellowpart p,blackpart p)
fi
withpen penpart p
withprescript prescriptpart p
withpostscript postscriptpart p
enddef ;
> Also, what is the advantage of using properties over a simple def?
> (except that I cannot def a suffixed variable). For example:
>
> \starttext
> \startMPcode
> def qA = withcolor red withpen pencircle scaled 1bp enddef;
> def qB = withcolor blue withpen pencircle scaled 10bp enddef;
>
> draw fullcircle scaled 1cm qA;
> draw fullcircle scaled 2cm qB;
>
> \stopMPcode
> \stoptext
abstraction ..
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next prev parent reply other threads:[~2017-07-24 8:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-23 23:40 Aditya Mahajan
2017-07-24 0:13 ` Alan Braslau
2017-07-24 8:26 ` Hans Hagen [this message]
2017-07-24 16:58 ` Alan Braslau
2017-07-25 17:34 ` Aditya Mahajan
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