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+% $Id: xybsql10.mf,v 3.9 2010/06/10 18:45:50 krisrose Exp $
+%
+% XYBSQL10: lower squiggles/quarter circles for Xy-pic at 10 point.
+% Copyright (c) 1992 Kristoffer H. Rose <krisrose@tug.org>
+%
+% This file is part of the Xy-pic macro package.
+%
+% The Xy-pic macro package is free software; you can redistribute it and/or
+% modify it under the terms of the GNU General Public License as published by
+% the Free Software Foundation; either version 2 of the License, or (at your
+% option) any later version.
+%
+% The Xy-pic macro package is distributed in the hope that it will be
+% useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+% Public License for more details.
+%
+% You should have received a copy of the GNU General Public License along
+% with this macro package; if not, see http://www.gnu.org/licenses/.
+%
+% As a special exception, you may use this file and all files derived
+% from it without restriction. This special exception was added with
+% version 3.7 of Xy-pic.
+% _________________________________________________________________________
+%
+% CONTENTS: Squiggles are quarter circles with secant in all directions.
+% Each has zero bounding box around the start point, i.e., from which the
+% quarter circle `turns letf' ... this can be illustrated as follows:
+%
+% Code: [-1] 15 31 47 63 79 95 111 127
+% _
+% | ) | /\
+% _o o o o o- o o o _o
+% | ( |_ \/ |
+% _________________________________________________________________________
+%
+font_identifier "XYBSQL"; font_size 10pt#;
+mode_setup;
+
+% METANESS...
+%
+segl# = sqrt 2 * 1/4 designsize; define_pixels(segl); % segment length
+segx# = (sqrt 2 - 1)*segl#; define_pixels(segx); % segment height
+segw# = .4pt#; define_whole_blacker_pixels(segw); % segment thickness
+%
+pickup pencircle scaled segw; char_pen := savepen;
+%
+% chartowards makes char cc with quarter circle that is secant to line
+% from (0,0) to (dx,dy), turning left.
+%
+def chartowards(expr cc,dx,dy) =
+ beginchar(cc,0,0,0);
+ a := angle (dx,dy);
+ z0 = (0,0); z1 = segl * dir a;
+ pickup char_pen; draw z0{dir(a-45)}..{dir(a+45)}z1;
+ endchar
+enddef;
+
+% GENERATE...
+%
+input xyd
+
+bye.
+%
+% $Log: xybsql10.mf,v $
+% Revision 3.9 2010/06/10 18:45:50 krisrose
+% Reference to GPL by URL.
+%
+% Revision 3.8 2010/04/16 06:06:52 krisrose
+% Preparing for a new release...
+%
+% Revision 3.7 1999/02/16 15:12:50 krisrose
+% Interim release (Y&Y fonts now free).
+%
+% Revision 3.3 1996/12/19 03:31:56 krisrose
+% Maintenance release
+%
+% Revision 3.0 1995/07/07 20:14:21 kris
+% Major release w/new User's Guide!
+%
+% Revision 2.13 1995/07/04 15:11:17 kris
+% Ready to release v3?
+%
+% Revision 2.7 1992/12/14 01:41:26 kris
+% Now uses xyd.mf.
+%
+% Based on obsolete xyqc10.mf [Revision 2.6 1992/06/24 01:23:34 kris]