%% xyps-r.tex from $Id: xyps-r.doc,v 2.9 1994/06/09 14:38:56 ross Exp $
%%
%% XY-pic ``PostScript Rotations and Scaling''.
%% Copyright (c) 1993-1994 Ross Moore <ross@mpce.mq.edu.au>
%%
%% This file is part of the XY-pic package for graphs and diagrams in TeX.
%% See the companion README and INSTALL files for further information.
%% Copyright (c) 1991-1994 Kristoffer H. Rose <kris@diku.dk>
%%
%% The XY-pic 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 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 package; if not, write to the Free Software Foundation, Inc.,
%% 675 Mass Ave, Cambridge, MA 02139, USA.
%%
\ifx\xypsrloaded\relax \message{not reloaded}\endinput \fi
\let\xypsrloaded=\relax \xycatcodes
\xyrequire{rotate}
\xyrequire{ps}
\xycatcodes
\xydef@\xyPSpretransform@{\xyPSrawA@{\preXYtransform@@}}
\xydef@\xyPSposttransform@{\xyPSrawZ@{\postXYtransform@@}}
\xyPSalternative@{\preXYtransform@}{pretransform}
\xyPSalternative@{\postXYtransform@}{posttransform}
\xydef@\xyPSscale@#1#2{%
 \xyPSsplitPS@{\xyscale@start(#1,#2)}{\xyscale@end}\xyPSpsxy@ 
 }
\xydef@\xyscale@start(#1,#2){xyXpos xyYpos 2 copy translate
 #1\space#2\space scale neg exch neg exch translate }
\xydef@\xyscale@end{}
 \xyPSalternative@{\xyscale@@}{scale}
\xydef@\xyrot@start(#1){ xyXpos xyYpos 2 copy translate
 #1\space neg rotate neg exch neg exch translate }
\xydef@\xyrot@end{}
\xydef@\xyPSrotate@#1{%
 \xyPSsplitPS@{\xyrot@start(#1 setupDirection XYdirection 2 mul)}{}%
 \xyPSpsxy@ 
 }
\xydef@\xyPSspecialRotate@#1{%
 \xyPSsplitPS@{\xyrot@start(#1)}{}\xyPSpsxy@ 
 }
\xyPSalternative@{\xyRotate@@}{rotate}
\xyPSalternative@{\xySpecialRotate@@}{specialRotate}
\xyendinput