From: Troy Henderson <thenders@gmail.com>
To: Hans Hagen <pragma@wxs.nl>
Cc: mailing list for ConTeXt users <ntg-context@ntg.nl>,
MetaPost List <metapost@tug.org>
Subject: Re: MetaPost transformation
Date: Wed, 30 May 2012 19:56:22 -0500 [thread overview]
Message-ID: <CAFP+xFJmoZ0PBWK=91SY7jPmEa_4gWGSBHfnt6S659jEiQCbAg@mail.gmail.com> (raw)
In-Reply-To: <4FC69178.8020300@wxs.nl>
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Well then in case anyone needs such a transformation, I've constructed the
(non-unique) transformation T
> t:=angle(f,e);
> q:=e++f;
> p:=(c*f-d*e)/q;
> s:=(c*e+d*f)/(q**2);
> transform T;
> T:=identity rotated t xscaled p yscaled q slanted s shifted (a,b);
This yields T=(a,b,c,d,e,f).
Troy
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next prev parent reply other threads:[~2012-05-31 0:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-30 21:10 Troy Henderson
2012-05-30 21:30 ` Hans Hagen
2012-05-31 0:56 ` Troy Henderson [this message]
[not found] ` <CAFP+xFJmoZ0PBWK=91SY7jPmEa_4gWGSBHfnt6S659jEiQCbAg@mail.g mail.com>
2012-05-31 2:37 ` [NTG-context] " Dan Luecking
2012-05-31 3:44 ` [metapost] " Troy Henderson
2012-05-31 7:00 ` Albrecht Kauffmann
2012-05-31 12:31 ` Troy Henderson
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