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Re: [Groff] chop in pic?
From: |
Werner LEMBERG |
Subject: |
Re: [Groff] chop in pic? |
Date: |
Sun, 16 Sep 2001 09:41:09 +0200 (CEST) |
> In the original pic, I believe that I remember that chop would end
> the arrows at the boundary of the ellipse but GNU pic has never done
> that. Is this a known bug? Is my memory/understanding incorrect?
> Thanks.
According to the original pic manual, it doesn't. If I read the docs
correctly, `chop' applies to straight lines only (thus your arc won't
be chopped anyway), and it will use `circlerad' (0.25) for chopping if
no other values are given.
I could generalize pic's syntax of compass points with something like:
deg = atan2(0, -1) / 180 ;
move to last ellipse .angle deg * 217 ;
This would specify a point on the ellipse with an angle of 217 degrees
(in the mathematical sense, i.e. counter-clockwise from the right).
Comments?
Werner