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-%% $Id: xytextures.doc,v 3.3 1996/12/18 09:41:45 ross Exp $
-%%
-%% Xy-pic ``Textures'' driver interface option.
-%% Copyright (c) 1995-1996 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) 1991-1996 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.
-%%
-\ifx\xyloaded\undefined \input xy \fi
-
-\xyprovide{textures}{Textures driver}{\stripRCS$Revision: 3.3 $}%
- {Ross Moore}{ross@mpce.mq.edu.au}%
- {Mathematics Department, Macquarie University, NSW~2109, Australia}
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-This driver provides support for version 1.7+ of Blue Sky Research's
-\Textures\ application for Macintosh\footnote{Macintosh is a trademark of
-Apple Computer Inc.}. It incorporates support for colour and all of
-\Xy-pic's \PS\ effects. Earlier versions of \Textures\ should instead use
-the driver option |\xyoption{16textures}|.
-
-Notice that version 1.7 suffers from a printing bug which may cause a \PS\
-error. A fix is kludged by making sure the first page has been shown in the
-viewer before any pages with diagrams are sent to the printer.
-
-\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\paragraph*{Header:}\leavevmode
-\DOCHEADER
-
-\DOCMODE(
-\xydef@\Textures@@#1{\dvimessage@{Textures}{#1}}
-
-\newdriver{%
- \xyaddsupport{color}\texturesColor@@
- \xyaddsupport{crayon}\texturesCrayon@@
- \xyaddsupport{ps}\texturesPS@@
- \xyaddsupport{rotate}\texturesRotate@@
- \xyaddsupport{line}\texturesLine@@
- \xyaddsupport{frame}\texturesFrames@@
- \xyaddsupport{tile}\texturesTiles@@
- \xyaddsupport{cmtip}\relax
-}
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-Supported |\special| effects are...
-%
-\begin{itemize}
-
-\item colour, both on-screen and with \PS\
-
-\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-Textures uses the colour-stack method, but it requires a separate
-|\special| to set the new colour after having pushed the previous colour
-onto the stack.
-
-\DOCMODE(
-\xydef@\TexturesColor@push#1{\special{color push}\special{color #1}}
-
-\xydef@\TexturesColours@{\texturesPStypes@
- \let\xylocalColor@=\xystackcolor@
- \let\xycolor@push=\TexturesColor@push
- \def\xycolor@{\xycolor@@}%
- \expandafter\ifx\csname xyps-psloaded\endcsname\empty\DN@{%
- \xyinputorelse@{xyps-c}{\xydrivernoload@{ps-c}}%
- \installPScolor@ }\else\DN@{}\fi \next@
- \ifx\xycolor@@\xyNoColor@ \let\xycolor@@=\xycolor@raw@@\fi
- \ifx\xycrayolaloaded\empty \DN@{\xystandardcolors@\texturesCrayon@@{}}%
- \else\let\next@=\xystandardcolors@ \fi \next@
- \let\xycolorwarning@=\relax \Textures@@{color}%
- \let\texturesColor@@=\relax
- \let\UnloadColor@@=\NoTexturesColor@
- }
-
-\xydef@\texturesColor@@{\TexturesColours@}
-
-\xydef@\NoTexturesColor@{%
- \let\xylocalColor@=\xyNoColor@@
- \let\xycolor@=\xyNoColor@
- \let\xycolorwarning@=\xycolorwarning@@
- \let\texturesColor@@=\TexturesColours@
- \let\UnloadColor@@=\UnloadColor@
- }
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\item crayon colours.
-
-\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-The 68 colours are those that |dvips| recognizes by name,
-thanks to Tomas Rokicki.
-
-\DOCMODE(
-\xydef@\texturesCrayon@@{\texturesColor@@\texturesCrayon@}
-\xydef@\texturesCrayon@{\installCrayolaColors@}%
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\item \PS\ back-end.
-
-\DOCMODE(
-\xydef@\texturesPS@@{\texturesPS@}
-\xydef@\texturesPSunload@{\UnloadPS@
- \let\UnloadPS@@=\UnloadPS@
- \let\texturesPS@@=\texturesPS@ }
-\DOCMODE)
-
-\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-Versions 1.7 and later of \Textures\ have the following kinds of |\special|,
-the first two executing in the environment defined by the dictionary
-|userdict|. In particular these versions of \Textures\ now allow the
-\PS\ dictionary to be loaded into the main working dictionary.
-
-\begin{itemize}
-\item |\special{rawpostscript #1}| puts code directly into the \PS\ file.
-\item |\special{postscript #1}| wraps the code within |sps|...|eps|,
-which involves a basis change within a |save/restore| pair.
-\item |\special{prePostScript #1}| places the \PS\ code within the header
-dictionary, called |TeXdict|.
-\end{itemize}
-Each of these has a corresponding version for reading the \PS\ commands
-from a file.
-
-\DOCMODE(
-\xydef@\texturesPStypes@{%
- \xyinputorelse@{xyps-ps}{\xydrivernoload@{ps-ps}}%
- \ifx\PSspecial@@\TexturesSpecial@\else
- \let\PSspecial@@=\TexturesSpecial@
- \let\PSmacro@@=\TexturesMacro@
- \let\PSdict@@=\TexturesDict@
- \let\PSraw@@=\TexturesRaw@
- \let\PSinclude@@=\TexturesInclude@
- \let\PSspecialdict@@=\TexturesSpecialDict@
- \let\xyPSobeylines@@=\obeyTextureslines@
- \Textures@@{PostScript}%
- \fi \texturesCurrpt@ \XYpredict@ }
-
-\xydef@\TexturesSpecial@#1{\firstPS@@\special{postscript #1}}
-\xydef@\TexturesMacro@#1{\special{postscript {#1}xy}}
-\xydef@\TexturesDict@#1{\special{prePostScript #1}}
-\xydef@\TexturesSpecialDict@#1{\special{prePostScript #1}}
-\xydef@\TexturesInclude@#1{\firstPS@@\special{prePostScriptfile #1}}
-\xydef@\TexturesRaw@#1{\firstPS@@\special{rawpostscript #1}}%
-
-{\catcode`\^^M=\active%
- \gdef\next{\catcode`\^^M=\active \let^^M=\par%
- \let\PSspecial@@=\TexturesDict@ \obeyspaces}}
-\xylet@\obeyTextureslines@=\next
-\DOCMODE)
-
-The |currentpoint| is defined for the ``raw'' specials.
-For Textures this is the same as |\xyPScurrpt@@@|, in |xyps-ps.doc|.
-
-\DOCMODE(
-\xydef@\texturesCurrpt@{\let\xyPScurrpt@@=\texturesCurrpt@@}%
-\xydef@\texturesCurrpt@@{\PSspecial@@{xyi}\PSraw@@{userdict begin xyx end}}
-
-%\xydef@\texturesCurrpt@@{\PSspecial@@{%
-% 0 0 transform grestore gsave itransform }%
-% \PSraw@@{userdict begin /xyYpos exch def /xyXpos exch def end}}
-\DOCMODE)
-
-The \PS\ operator called |xyx| is defined in |xyps-ps| for storing the
-location placed on the stack by |xyi|.
-
-\medskip
-
-This installs the \PS\ backend.
-
-\DOCMODE(
-\xydef@\texturesPS@{\texturesPStypes@
- \let\texturesPS@@=\relax
- \let\UnloadPS@@=\texturesPSunload@
- \let\installxyps@@=\relax \installxyps@ }
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\item rotated/scaled diagrams and text, using \PS.
-\DOCMODE(
-\xydef@\texturesRotate@@{\texturesRotate@}
-
-\xydef@\texturesRotate@{\texturesPStypes@
- \expandafter\ifx\csname xyps-psloaded\endcsname\empty\DN@{%
- \xyinputorelse@{xyps-r}{\xydrivernoload@{ps-r}}%
- \xyRotScale@@ \installPSrotscale@ }%
- \else\DN@{\xydriverfail@{rotations are}\UnloadRotate@\relax}\fi
- \next@}
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\item variable line-widths and poly-lines, using \PS.
-\DOCMODE(
-\xydef@\texturesLine@@{\texturesLine@}
-
-\xydef@\texturesLine@{\texturesPStypes@
- \expandafter\ifx\csname xyps-psloaded\endcsname\empty\DN@{%
- \xyinputorelse@{xyps-l}{\xydrivernoload@{ps-l}}%
- \installPSline@ }%
- \else\DN@{\xydriverfail@{line-widths are}\UnloadLine@\relax}\fi
- \next@ }
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\item extra frames and fills, using \PS.
-\DOCMODE(
-\xydef@\texturesFrames@@{\texturesFrames@}
-
-\xydef@\texturesFrames@{\texturesPStypes@
- \expandafter\ifx\csname xyps-psloaded\endcsname\empty\DN@{%
- \xyinputorelse@{xyps-f}{\xydrivernoload@{ps-f}}%
- \installPSframes@ }%
- \else\DN@{\xydriverfail@{frames are}\UnloadPSFrames@\relax}\fi
- \next@ }
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\item patterns and tiles, using \PS.
-\DOCMODE(
-\xydef@\texturesTiles@@{\texturesTiles@}
-
-\xydef@\texturesTiles@{\texturesPStypes@
- \expandafter\ifx\csname xyps-psloaded\endcsname\empty\DN@{%
- \xyinputorelse@{xyps-t}{\xydrivernoload@{ps-t}}%
- \installPSpatterns@ \xystandardpatterns@}%
- \else\DN@{\xydriverfail@{Patterns are}\UnloadPSpatterns@\relax}\fi
- \next@ }
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\end{itemize}
-
-\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\paragraph*{The end \& Log}\leavevmode
-
-\DOCMODE(
-\xyendinput
-
-% $Log: xytextures.doc,v $
-% Revision 3.3 1996/12/18 09:41:45 ross
-% minor improvements to file-loading commands
-%
-% Revision 3.2 1995/09/19 18:21:41 ross
-% Bug fix release.
-%
-% Revision 3.1 1995/09/05 20:36:33 ross
-% Release!
-%
-% Revision 3.0 1995/07/07 20:13:19 ross
-% Major release w/new User's Guide!
-%
-% Revision 2.13 1995/07/04 15:04:51 ross
-% Ready for release of v3.
-%
-% NEW for version 3.
-\DOCMODE)
-
-\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-% Tell Emacs that this is a LaTeX document and how it is formatted:
-% Local Variables:
-% mode:latex
-% fill-column:77
-% End: