From: Joe Van Dyk <joevandyk / gmail.com>
Subject: Re: Ruby-tk question
Date: Fri, 6 May 2005 10:41:39 +0900
Message-ID: <c715e6405050518413e8952ea / mail.gmail.com>

> On 5/5/05, Hidetoshi NAGAI <nagai / ai.kyutech.ac.jp> wrote:
> > From: Joe Van Dyk <joevandyk / gmail.com>
> > Subject: Ruby-tk question
> > Date: Fri, 6 May 2005 09:24:01 +0900
> > Message-ID: <c715e64050505172319751570 / mail.gmail.com>
> > > What's the easiest way to rotate a Tk Canvas Polygon?
> > Probably, you'll have to calculate coords by yourself.
> Hm, I have no idea how to do that.  Trig was so long ago.

That is field of Mathematics. :-)
I think that is not so difficult.
-- 
Hidetoshi NAGAI (nagai / ai.kyutech.ac.jp)