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% $Id: xyatri.mf,v 3.4 2011/03/14 20:14:00 krisrose Exp $
%
% xyatri, for use with Lucida
% Copyright (c) 2007   Jeremy Gibbons   <jeremy.gibbons@comlab.ox.ac.uk>
%
% This file is part of the Xy-pic package for graphs and diagrams in TeX.
% Copyright (c) 1991-2011	 Kristoffer H. Rose  <krisrose@tug.org>
%
% 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.

def chartowards(expr cc,dx,dy) =
 beginchar(cc,0,0,0);
  a := angle(dx,dy);
  z0 = (tipo,0) rotated a; 		% tip of tip
  z1 = (-segl,0) rotated a;		% center of tail
  z2 = (-segl,1/2 segx) rotated a;	% tail ends
  z3 = indent [z1,z0]; 	                % back of tip
  fill z2--z0--z3--cycle;
  penlabels(0,1,2,3);
 endchar
enddef;

def openit = openwindow currentwindow
 from origin to (screen_cols,screen_rows) at (-200,300) enddef;

input xyd

 bye.
 
% $Log: xyatri.mf,v $
% Revision 3.4  2011/03/14 20:14:00  krisrose
% Preparing for release 3.8.6.
%
% Revision 3.3  2010/06/10 18:45:50  krisrose
% Reference to GPL by URL.
%
% Revision 3.2  2010/04/17 14:45:48  krisrose
% Generate and extract Type1 fonts.
%
% Revision 3.1  2010/04/17 04:19:41  krisrose
% Integrated xylu tips by Jeremy Gibbons.
%
% based on xyatip (triangular rather than curvilinear barbs)