--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/talks/20091108-Riverside/xypdf-r.tex	Fri Oct 30 21:05:16 2009 +0000
@@ -0,0 +1,62 @@
+%% xypdf-r.tex from $Id: xypdf-r.doc,v $
+%%
+%% Xy-pic ``PDF Rotations and Scaling''.
+%% Copyright (c) 1999-1999 Ross Moore <ross@maths.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) 1991-1999 Kristoffer H. Rose <krisrose@brics.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.
+%%
+%% As a special exception, you may use this file and all files derived
+%% from it without restrictions. This special exception was added with
+%% version 3.7 of Xy-pic.
+%%
+\expandafter\ifx\csname xypdf-rloaded\endcsname\empty
+ \message{not reloaded}\endinput \fi
+\expandafter\let\csname xypdf-rloaded\endcsname=\empty \xycatcodes
+\expandafter\ifx\csname xypdf-sloaded\endcsname\empty\else
+ \xyinputorelse@{xypdf-s}{\xyerror@{Could not load xypdf-s}{}}%
+ \xycatcodes\fi
+\xydef@\installPDFrotscale@{\installPDFstyle@
+% \let\xyRotate@@=\xyPDFrotate@@
+% \let\doSpecialRotate@@=\doPDFspecialRotate@@
+ \let\xyscale@@=\xyPDFscale@@
+ \xyPDFshapes@true
+ \xyuncatcodes }
+\xydef@\UsePDFrotate{\installPDFrotscale@}
+\xydef@\NoPDFrotate{\UnloadRotate@\relax}
+\xydef@\xyPDFpretransform@{\xyPDFrawA@{\preXYtransform@@}}
+\xydef@\xyPDFposttransform@{\xyPDFrawZ@{\postXYtransform@@}}
+\let\preXYtransform@=\xyPDFpretransform@
+\let\postXYtransform@=\xyPDFposttransform@
+\xydef@\xyPDFrotSplit@{%
+ \expandafter\def\expandafter\preShape@@\expandafter{\xyPDFpre@}%
+ \expandafter\def\expandafter\postShape@@\expandafter{\xyPDFpost@}}
+\xydef@\xyPDFscale@@#1#2{%
+ \xyPDFsplitPDF@{\xyscale@start(#1,#2)}{\xyscale@end}%
+ \xyPDFrotSplit@\xyPDFpdfxy@ }
+\xydef@\xyPDFrotate@@#1{%
+ \xyPDFsplitPDF@{\xyrot@start(#1 xyd)}{\xyrot@end}%%%<<------ here
+ \xyPDFrotSplit@\xyPDFpdfxy@ }
+\xydef@\xyPDFspecialRotate@#1{%
+ \xyPDFsplitPDF@{\xyrot@start(#1)}{\xyrot@end}\xyPDFrotSplit@\xyPDFpdfxy@ }
+\xydef@\doPDFspecialRotate@@#1@@{\xyPDFspecialRotate@{#1}}
+\xydef@\xyRotScale@@{%
+% \def\xyrot@start(##1){{xyt ##1\space xyr}}%%%<<------ here
+ \def\xyscale@start(##1,##2){ q ##1 0 0 ##2 0 0 cm}%
+ \def\xyrot@end{ Q}\def\xyscale@end{ Q}}
+\endinput