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authorKarl Berry <karl@freefriends.org>2008-02-23 00:49:54 +0000
committerKarl Berry <karl@freefriends.org>2008-02-23 00:49:54 +0000
commit4fc1af1461e934c39f8f5e10d5d8788681d82223 (patch)
tree7716e8a3e8787a3d11c5ce728d21b808f786ce7d /Master/texmf-dist/tex/generic/pgf/systemlayer/pgfsyssoftpath.code.tex
parent6f5a4edf390b6e05291d7a4b816782b14122a205 (diff)
tikz/pgf 2.0 first attempt (22feb08)
git-svn-id: svn://tug.org/texlive/trunk@6741 c570f23f-e606-0410-a88d-b1316a301751
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-% Copyright 2006 by Till Tantau
-%
-% This file may be distributed and/or modified
-%
-% 1. under the LaTeX Project Public License and/or
-% 2. under the GNU Public License.
-%
-% See the file doc/generic/pgf/licenses/LICENSE for more details.
-
-\ProvidesFileRCS $Header: /cvsroot/pgf/pgf/generic/pgf/systemlayer/pgfsyssoftpath.code.tex,v 1.5 2007/02/19 13:18:57 tantau Exp $
-
-
-% This package provides the pgf system path abstraction layer. This
-% layer is used to construct paths first ``abstractly.'' These
-% abstract paths can still be modified, before they are ``made
-% concrete.''
-%
-% An abstract path consists of a sequence of basic building blocks,
-% each of which is a tuple consisting of two numbers (specifying a
-% coordinate) and a token. Possible tokens are:
-%
-% 1. moveto
-% 2. lineto
-% 3. rectcorner
-% 4. rectsize
-% 5. curvetosupporta
-% 6. curvetosupportb
-% 7. curveto
-% 8. closepath
-% 9. specialround
-%
-% A curveto must always be preceeded by a curvetosupporta and a
-% curvetosupportb. A non-empty path must always begin with a
-% moveto. The coordinates of a closepath are non-specified, currently,
-% but they might be set to the coordinate of the path segment start,
-% in the future.
-
-
-
-\let\pgfsyssoftpath@currentpath=\pgfutil@empty
-% The current path
-
-\def\pgfsyssoftpath@lastmoveto{{0pt}{0pt}}
-
-\newif\ifpgfsyssoftpathmovetorelevant
-\pgfsyssoftpathmovetorelevanttrue
-
-% Add a moveto element to the current path
-\def\pgfsyssoftpath@moveto#1#2{%
- \edef\pgfsyssoftpath@temp{{%
- \noexpand\pgfsyssoftpath@movetotoken{#1}{#2}%
- }}%
- \expandafter\pgfutil@g@addto@macro\expandafter\pgfsyssoftpath@currentpath\pgfsyssoftpath@temp%
- \ifpgfsyssoftpathmovetorelevant%
- \xdef\pgfsyssoftpath@lastmoveto{{#1}{#2}}%
- \fi%
-}
-
-% Add a lineto element to the current path
-\def\pgfsyssoftpath@lineto#1#2{%
- \edef\pgfsyssoftpath@temp{{%
- \noexpand\pgfsyssoftpath@linetotoken{#1}{#2}%
- }}%
- \expandafter\pgfutil@g@addto@macro\expandafter\pgfsyssoftpath@currentpath\pgfsyssoftpath@temp%
-}
-
-% Add curveto elements to the current path
-\def\pgfsyssoftpath@curveto#1#2#3#4#5#6{%
- \edef\pgfsyssoftpath@temp{{%
- \noexpand\pgfsyssoftpath@curvetosupportatoken{#1}{#2}%
- \noexpand\pgfsyssoftpath@curvetosupportbtoken{#3}{#4}%
- \noexpand\pgfsyssoftpath@curvetotoken{#5}{#6}%
- }}%
- \expandafter\pgfutil@g@addto@macro\expandafter\pgfsyssoftpath@currentpath\pgfsyssoftpath@temp%
-}
-
-% Add rectanlge elements to the current path
-\def\pgfsyssoftpath@rect#1#2#3#4{%
- \edef\pgfsyssoftpath@temp{{%
- \noexpand\pgfsyssoftpath@rectcornertoken{#1}{#2}%
- \noexpand\pgfsyssoftpath@rectsizetoken{#3}{#4}%
- }}%
- \expandafter\pgfutil@g@addto@macro\expandafter\pgfsyssoftpath@currentpath\pgfsyssoftpath@temp%
-}
-
-% Add closepath element to the current path
-\def\pgfsyssoftpath@closepath{%
- \edef\pgfsyssoftpath@temp{{%
- \noexpand\pgfsyssoftpath@closepathtoken\pgfsyssoftpath@lastmoveto%
- }}%
- \expandafter\pgfutil@g@addto@macro\expandafter\pgfsyssoftpath@currentpath\pgfsyssoftpath@temp%
-}
-
-% Add special element to the current path
-\def\pgfsyssoftpath@specialround#1#2{%
- \edef\pgfsyssoftpath@temp{{%
- \noexpand\pgfsyssoftpath@specialroundtoken{#1}{#2}%
- }}%
- \expandafter\pgfutil@g@addto@macro\expandafter\pgfsyssoftpath@currentpath\pgfsyssoftpath@temp%
-}
-
-
-% Getting and setting the current path
-\def\pgfsyssoftpath@getcurrentpath#1{%
- \let#1=\pgfsyssoftpath@currentpath%
-}
-
-\def\pgfsyssoftpath@setcurrentpath#1{%
- \global\let\pgfsyssoftpath@currentpath=#1%
-}
-
-
-% Invoking the current path
-\def\pgfsyssoftpath@invokecurrentpath{%
- \pgfsyssoftpath@currentpath%
-}
-
-\def\pgfsyssoftpath@flushcurrentpath{%
- \pgfsyssoftpath@invokecurrentpath%
- \pgfsyssoftpath@setcurrentpath\pgfutil@empty%
-}
-
-% Marshallers
-\def\pgfsyssoftpath@movetotoken#1#2{\pgfsys@moveto{#1}{#2}}
-\def\pgfsyssoftpath@linetotoken#1#2{\pgfsys@lineto{#1}{#2}}
-\def\pgfsyssoftpath@rectcornertoken#1#2#3#4#5{\pgfsys@rect{#1}{#2}{#4}{#5}} % #3 = \pgfsyssoftpath@rectsizetoken
-\def\pgfsyssoftpath@curvetosupportatoken#1#2#3#4#5#6#7#8{\pgfsys@curveto{#1}{#2}{#4}{#5}{#7}{#8}}
-\def\pgfsyssoftpath@closepathtoken#1#2{\pgfsys@closepath}
-\let\pgfsyssoftpath@specialroundtoken=\pgfutil@gobbletwo
-
-
-\endinput
-
-%%% Local Variables:
-%%% mode: latex
-%%% End: