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diff --git a/Master/texmf-dist/tex/generic/pgf/math/pgfmathcalc.code.tex b/Master/texmf-dist/tex/generic/pgf/math/pgfmathcalc.code.tex new file mode 100644 index 00000000000..29a2be58693 --- /dev/null +++ b/Master/texmf-dist/tex/generic/pgf/math/pgfmathcalc.code.tex @@ -0,0 +1,253 @@ +% Copyright 2007 by Mark Wibrow +% +% 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. + +% This file loads all the parsing, functions and operator stuff +% +% Version 1.414213 29/9/2007 + +\input pgfmathutil.code.tex +\input pgfmathparser.code.tex +\input pgfmathoperations.code.tex +\input pgfmathbase.code.tex + +% \pgfmathsetlength, \pgfmathaddtolength +% +% #1 = dimension register +% #2 = expression +% +% Description: +% +% These functions work similar to \setlength and \addtolength. Only, +% they allow #2 to contain an expression, which is evaluated before +% assignment. Furthermore, the font is setup before the assignment is +% done, so that dimensions like 1em are evaluated correctly. +% +% If #2 starts with "+", then a simple assignment is done (but the +% font is still setup). This is orders of magnitude faster than a +% parsed assignment. + +\def\pgfmathsetlength#1#2{% + \expandafter\pgfmath@onquick#2\pgfmath@% + {% + % Ok, quick version: + \begingroup% + \pgfmath@selectfont% + \pgfmath@x#2\unskip% + \pgfmath@returnone\pgfmath@x% + \endgroup% + #1\pgfmathresult pt\relax% + }% + {% + \pgfmathparse{#2}% + #1\pgfmathresult pt\relax% + }% + \ignorespaces% +} + +% \pgfmathaddtolength +% +% Add to #1 the result of evaluating #2. +% +% #1 - a dimension register +% #2 - an expression +% +\def\pgfmathaddtolength#1#2{% + \expandafter\pgfmath@onquick#2\pgfmath@% + {% + \begingroup% + \pgfmath@selectfont% + \pgfmath@x#1\relax% + \advance\pgfmath@x#2\unskip% + \pgfmath@returnone\pgfmath@x% + \endgroup% + #1\pgfmathresult pt\relax% + }% + {% + \pgfmathparse{#2}% + \advance#1\pgfmathresult pt\relax% + }% + \ignorespaces% +} + +% \pgfmathsetcount +% +% Assign #1 the truncated evaluation of #2. +% +% #1 - a count register +% #2 - an expression +% +\def\pgfmathsetcount#1#2{% + \expandafter\pgfmath@onquick#2\pgfmath@% + {% + #1#2\relax% + }% + {% + \pgfmathparse{#2}% + \afterassignment\pgfmath@gobbletilpgfmath@% + #1\pgfmathresult\relax\pgfmath@% + }% + \ignorespaces% +} + +% \pgfmathaddtocount +% +% Add to #1 the truncated evaluation of #2. +% +% #1 - a count register +% #2 - an expression +% +\def\pgfmathaddtocount#1#2{% + \expandafter\pgfmath@onquick#2\pgfmath@% + {% + \advance#1#2\relax% + }% + {% + \edef\pgfmath@addtocounttemp{\the#1}% + \pgfmathparse{#2}% + \afterassignment\pgfmath@gobbletilpgfmath@% + #1\pgfmathresult\relax\pgfmath@% + \advance#1\pgfmath@addtocounttemp\relax% + }% + \ignorespaces% +} + +% \pgfmathnewcounter +% +% LaTeX style counter which also works in plain TeX. Defines +% \c@<name> as a count register and also defines \the<name>. +% +% #1 the name of the counter. +% +% Example: +% +% \pgfmathnewcounter{counter} +% \pgfmathsetcounter{counter}{12} +% \thecounter (same as \the\c@counter) +% +\def\pgfmathnewcounter#1{% + \expandafter\ifx\csname c@#1\endcsname\relax% + \def\pgfmath@marshal{\csname newcount\endcsname}% Ha! Who cares about \outer? + \expandafter\pgfmath@marshal\csname c@#1\endcsname% + \expandafter\def\csname the#1\endcsname{\expandafter\the\csname c@#1\endcsname}% + \fi% +} + +% \pgfmathsetcounter +% +% Set the counter #1 to the evaluation of #2. +% +% #1 - a counter name +% #2 - an expression +% +\def\pgfmathsetcounter#1#2{% + \expandafter\pgfmathsetcount\csname c@#1\endcsname{#2}% +} + +% \pgfmathaddtocounter +% +% Add the counter #1 to the evaluation of #2. +% +% #1 - a counter name +% #2 - an expression +% +\def\pgfmathaddtocounter#1#2{% + \expandafter\pgfmathaddtocount\csname c@#1\endcsname{#2}% +} + +% \pgfmathmakecounterglobal +% +% Make the current value of a counter globally defined. +% +% #1 - a (valid) counter name. +% +\def\pgfmath@pgftext{pgf} +\def\pgfmath@tikztext{tikz} +\def\pgfmathmakecounterglobal#1{% + \pgfmath@ifundefined{c@#1}{}{% + \expandafter\pgfmath@in@\expandafter{\pgfmath@pgftext}{#1}% + \ifpgfmath@in@% + \else% + \expandafter\pgfmath@in@\expandafter{\pgfmath@tikztext}{#1}% + \ifpgfmath@in@% + \else% + \expandafter\global\csname c@#1\endcsname\csname c@#1\endcsname\relax% + \fi% + \fi% + }% +} + +% \pgfmathsetmacro +% +% \edef#1 as the result of evaluating #2. +% +% #1 - a macro +% #2 - an expression +% +\def\pgfmathsetmacro#1#2{% + \begingroup% + \pgfmathsetlength\pgfmath@x{#2}% + \edef#1{\pgfmath@tonumber{\pgfmath@x}}% + \pgfmath@smuggleone{#1}% + \endgroup% +} + +% \pgfmathsetlengthmacro +% +% \edef#1 as the result of evaluating #2 with pt. +% +% #1 - a macro +% #2 - an expression +% +\def\pgfmathsetlengthmacro#1#2{% + \begingroup% + \pgfmathsetlength\pgfmath@x{#2}% + \edef#1{\the\pgfmath@x}% + \pgfmath@smuggleone{#1}% + \endgroup% +} + +% \pgfmathtruncatemacro +% +% \edef#1 as the truncated result of evaluating #2. +% +% #1 - a macro +% #2 - an expression +% +\def\pgfmathtruncatemacro#1#2{% + \begingroup% + \pgfmathsetcount\c@pgfmath@counta{#2}% + \edef#1{\the\c@pgfmath@counta}% + \pgfmath@smuggleone{#1}% + \endgroup% +} + +% Check whether a given parameter starts with quick. +% +% The command should be followed by nonempty text, ending with +% \pgfmath@ as a stop-token. Then should follow +% +% #1 - code to execute if text starts with + +% #2 - code to execute if text does not +% +% Example: +% +% \pgfmath@onquick+0pt\pgfmath@{is quick}{is slow} + +\def\pgfmath@onquick{% + \afterassignment\pgfmath@afterquick% + \let\pgfmath@next=% +} + +\def\pgfmath@afterquick#1\pgfmath@{% + \ifx\pgfmath@next+% + \expandafter\pgfmath@firstoftwo% + \else% + \expandafter\pgfmath@secondoftwo% + \fi% +}
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