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+%%
+%% This is file `pgf-cmykshadings.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% pgf-cmykshadings.dtx (with options: `package')
+%%
+%% This is a generated file.
+%%
+%% Copyright (c) 2018 David Purton <dcpurton@marshwiggle.net>
+%%
+%% This work may be distributed and/or modified under the conditions of
+%% the LaTeX Project Public License, either version 1.3c of this license
+%% or (at your option) any later version. The latest version of this
+%% license is in
+%% http://www.latex-project.org/lppl.txt
+%% and version 1.3c or later is part of all distributions of LaTeX
+%% version 2005/12/01 or later.
+%%
+%% This work is "maintained" (as per the LPPL maintenance status)
+%% by David Purton.
+%%
+%% This work consists of the files pgf-cmykshadings.ins,
+%% pgf-cmykshadings.dtx, README.md, and the derived files
+%% - pgf-cmykshadings.sty
+%% - pgfsys-cmykshadings-pdftex.def
+%% - pgfsys-cmykshadgins-xetex.def
+%% - pgfsys-cmykshadings-luatex.def
+%% - pgfsys-cmykshadings-dvipdfmx.def
+%% - pgf-cmykshadings.pdf
+%%
+%%
+%% Substantial parts of the code for this package are taken from the pgf
+%% package files pgfcoreshade.code.tex, pgfsys-pdftex.def,
+%% pgfsys-luatex.def, and pgfsys-dvipdfmx.def copyright (c) 2006 Till
+%% Tantau and then slightly modified to support CMYK and grayscale
+%% shadings.
+%%
+\ProvidesPackage{pgf-cmykshadings}%
+ [2018/10/17 CMYK shadings support for PGF (DCP)]
+\RequirePackage{pgf}
+\def\pgf@parsefunc#1{%
+ \edef\temp{{#1}}%
+ \expandafter\pgf@convertstring\temp%
+ \edef\temp{{\pgf@conv}}%
+ \expandafter\pgf@@parsefunc\temp}
+\def\pgf@@parsefunc#1{%
+ \let\pgf@bounds=\pgfutil@empty%
+ \let\pgf@funcs=\pgfutil@empty%
+ \let\pgf@psfuncs=\pgfutil@empty%
+ \let\pgf@encode=\pgfutil@empty%
+ \let\pgf@sys@shading@ranges=\pgfutil@empty%
+ \pgf@sys@shading@range@num=0\relax%
+ \csname pgf@parsefirst\pgf@shading@model\endcsname[#1; ]%
+ \csname pgf@parselastdom\pgf@shading@model\endcsname[#1; ]%
+ \csname pgf@parsemid\pgf@shading@model\endcsname[#1; ]%
+ \ifx\pgf@bounds\pgfutil@empty%
+ \edef\pgf@pdfparseddomain{0 1}%
+ \edef\pgf@pdfparsedfunction{\pgf@singlefunc\space}%
+ \else%
+ \edef\pgf@pdfparseddomain{\pgf@doma\space\pgf@domb}%
+ \edef\pgf@pdfparsedfunction{%
+ << /FunctionType 3 /Domain [\pgf@doma\space\pgf@domb] /Functions
+ [\pgf@funcs\space] /Bounds [\pgf@bounds] /Encode [0 1 \pgf@encode]
+ >> }% <<
+ \fi%
+ \xdef\pgf@psfuncs{\pgf@psfuncs}%
+ }
+\let\pgf@parsefirstrgb\pgf@parsefirst
+\let\pgf@parselastdomrgb\pgf@parselastdom
+\let\pgf@parsemidrgb\pgf@parsemid
+\let\pgf@parserestrgb\pgf@parserest
+\def\pgf@parsefirstcmyk[cmyk(#1)=(#2,#3,#4,#5)#6]{%
+ \pgfmathsetlength\pgf@x{#1}%
+ \edef\pgf@sys@shading@start@pos{\the\pgf@x}%
+ \pgf@sys@bp@correct\pgf@x%
+ \edef\pgf@doma{\pgf@sys@tonumber{\pgf@x}}%
+ \edef\pgf@prevx{\pgf@sys@tonumber{\pgf@x}}%
+ \pgf@getcmyktuplewithmixin{#2}{#3}{#4}{#5}%
+ \edef\pgf@sys@shading@start@cmyk{\pgf@sys@cmyk}%
+ \let\pgf@sys@prevcolor=\pgf@sys@shading@start@cmyk%
+ \let\pgf@sys@prevpos=\pgf@sys@shading@start@pos%
+ \edef\pgf@prevcolor{\pgf@cmyk}%
+ \edef\pgf@firstcolor{\pgf@cmyk}}
+\def\pgf@parselastdomcmyk[cmyk(#1)=(#2,#3,#4,#5); {%
+ \pgfutil@ifnextchar]{%
+ \pgfmathsetlength\pgf@x{#1}%
+ \edef\pgf@sys@shading@end@pos{\the\pgf@x}%
+ \pgf@max=\pgf@x\relax%
+ \pgf@sys@bp@correct\pgf@x%
+ \edef\pgf@domb{\pgf@sys@tonumber{\pgf@x}}%
+ \pgf@getcmyktuplewithmixin{#2}{#3}{#4}{#5}%
+ \edef\pgf@sys@shading@end@cmyk{\pgf@sys@cmyk}%
+ \pgfutil@gobble}{\pgf@parselastdomcmyk[}}
+\def\pgf@parsemidcmyk[cmyk(#1)=(#2,#3,#4,#5); {\pgf@parserestcmyk[}
+\def\pgf@parserestcmyk[cmyk(#1)=(#2,#3,#4,#5); {%
+ \advance\pgf@sys@shading@range@num by1\relax%
+ \pgfutil@ifnextchar]{%
+ \pgf@getcmyktuplewithmixin{#2}{#3}{#4}{#5}%
+ \edef\pgf@singlefunc{\space%
+ << /FunctionType 2 /Domain [0 1] /C0
+ [\pgf@prevcolor] /C1 [\pgf@cmyk] /N 1 >> }% <<
+ \edef\pgf@funcs{\pgf@funcs\space%
+ << /FunctionType 2 /Domain [\pgf@doma\space\pgf@domb] /C0
+ [\pgf@prevcolor] /C1 [\pgf@cmyk] /N 1 >> }% <<
+ \edef\pgf@psfuncs{\pgf@prevx\space
+ \pgf@cmyk\space \pgf@prevcolor\space pgfshade \pgf@psfuncs}%
+ \pgfmathsetlength\pgf@x{#1}%
+ \edef\pgf@sys@shading@ranges{\pgf@sys@shading@ranges{%
+ {\pgf@sys@prevpos}{\the\pgf@x}{\pgf@sys@prevcolor}{\pgf@sys@cmyk}}}%
+ \edef\pgf@sys@prevpos{\the\pgf@x}%
+ \let\pgf@sys@prevcolor=\pgf@sys@cmyk%
+ \pgfutil@gobble}{%
+ \pgfmathsetlength\pgf@x{#1}%
+ \pgf@getcmyktuplewithmixin{#2}{#3}{#4}{#5}%
+ \edef\pgf@sys@shading@ranges{\pgf@sys@shading@ranges{%
+ {\pgf@sys@prevpos}{\the\pgf@x}{\pgf@sys@prevcolor}{\pgf@sys@cmyk}}}%
+ \edef\pgf@sys@prevpos{\the\pgf@x}%
+ \let\pgf@sys@prevcolor=\pgf@sys@cmyk%
+ \edef\pgf@psfuncs{\pgf@prevx\space \pgf@cmyk\space
+ \pgf@prevcolor\space pgfshade \pgf@psfuncs}%
+ \pgf@sys@bp@correct\pgf@x%
+ \edef\pgf@prevx{\pgf@sys@tonumber{\pgf@x}}%
+ \edef\pgf@bounds{\pgf@bounds\space\pgf@sys@tonumber{\pgf@x}}%
+ \edef\pgf@encode{\pgf@encode\space0 1}%
+ \edef\pgf@singlefunc{\space%
+ << /FunctionType 2 /Domain [0 1] /C0
+ [\pgf@prevcolor] /C1 [\pgf@cmyk] /N 1 >> }% <<
+ \edef\pgf@funcs{\pgf@funcs\space%
+ << /FunctionType 2 /Domain [\pgf@doma\space\pgf@domb] /C0
+ [\pgf@prevcolor] /C1 [\pgf@cmyk] /N 1 >> }% <<
+ \edef\pgf@prevcolor{\pgf@cmyk}%
+ \pgf@parserestcmyk[}}
+\def\pgf@getcmyktuplewithmixin#1#2#3#4{%
+ \pgfutil@definecolor{pgfshadetemp}{cmyk}{#1,#2,#3,#4}%
+ \pgfutil@ifundefined{applycolormixins}{}{\applycolormixins{pgfshadetemp}}%
+ \pgfutil@extractcolorspec{pgfshadetemp}{\pgf@tempcolor}%
+ \expandafter\pgfutil@convertcolorspec\pgf@tempcolor{cmyk}{\pgf@cmykcolor}%
+ \expandafter\pgf@getcmyk@@\pgf@cmykcolor!}
+\def\pgf@getcmyk@@#1,#2,#3,#4!{%
+ \def\pgf@cmyk{#1 #2 #3 #4}%
+ \def\pgf@sys@cmyk{{#1}{#2}{#3}{#4}}%
+}
+\def\pgf@parsefirstgray[gray(#1)=(#2)#3]{%
+ \pgfmathsetlength\pgf@x{#1}%
+ \edef\pgf@sys@shading@start@pos{\the\pgf@x}%
+ \pgf@sys@bp@correct\pgf@x%
+ \edef\pgf@doma{\pgf@sys@tonumber{\pgf@x}}%
+ \edef\pgf@prevx{\pgf@sys@tonumber{\pgf@x}}%
+ \pgf@getgraytuplewithmixin{#2}%
+ \edef\pgf@sys@shading@start@gray{\pgf@sys@gray}%
+ \let\pgf@sys@prevcolor=\pgf@sys@shading@start@gray%
+ \let\pgf@sys@prevpos=\pgf@sys@shading@start@pos%
+ \edef\pgf@prevcolor{\pgf@gray}%
+ \edef\pgf@firstcolor{\pgf@gray}}
+\def\pgf@parselastdomgray[gray(#1)=(#2); {%
+ \pgfutil@ifnextchar]{%
+ \pgfmathsetlength\pgf@x{#1}%
+ \edef\pgf@sys@shading@end@pos{\the\pgf@x}%
+ \pgf@max=\pgf@x\relax%
+ \pgf@sys@bp@correct\pgf@x%
+ \edef\pgf@domb{\pgf@sys@tonumber{\pgf@x}}%
+ \pgf@getgraytuplewithmixin{#2}%
+ \edef\pgf@sys@shading@end@gray{\pgf@sys@gray}%
+ \pgfutil@gobble}{\pgf@parselastdomgray[}}
+\def\pgf@parsemidgray[gray(#1)=(#2); {\pgf@parserestgray[}
+\def\pgf@parserestgray[gray(#1)=(#2); {%
+ \advance\pgf@sys@shading@range@num by1\relax%
+ \pgfutil@ifnextchar]{%
+ \pgf@getgraytuplewithmixin{#2}%
+ \edef\pgf@singlefunc{\space%
+ << /FunctionType 2 /Domain [0 1] /C0
+ [\pgf@prevcolor] /C1 [\pgf@gray] /N 1 >> }% <<
+ \edef\pgf@funcs{\pgf@funcs\space%
+ << /FunctionType 2 /Domain [\pgf@doma\space\pgf@domb] /C0
+ [\pgf@prevcolor] /C1 [\pgf@gray] /N 1 >> }% <<
+ \edef\pgf@psfuncs{\pgf@prevx\space \pgf@gray\space
+ \pgf@prevcolor\space pgfshade \pgf@psfuncs}%
+ \pgfmathsetlength\pgf@x{#1}%
+ \edef\pgf@sys@shading@ranges{\pgf@sys@shading@ranges{%
+ {\pgf@sys@prevpos}{\the\pgf@x}{\pgf@sys@prevcolor}{\pgf@sys@gray}}}%
+ \edef\pgf@sys@prevpos{\the\pgf@x}%
+ \let\pgf@sys@prevcolor=\pgf@sys@gray%
+ \pgfutil@gobble}{%
+ \pgfmathsetlength\pgf@x{#1}%
+ \pgf@getgraytuplewithmixin{#2}%
+ \edef\pgf@sys@shading@ranges{\pgf@sys@shading@ranges{%
+ {\pgf@sys@prevpos}{\the\pgf@x}{\pgf@sys@prevcolor}{\pgf@sys@gray}}}%
+ \edef\pgf@sys@prevpos{\the\pgf@x}%
+ \let\pgf@sys@prevcolor=\pgf@sys@gray%
+ \edef\pgf@psfuncs{\pgf@prevx\space \pgf@gray\space
+ \pgf@prevcolor\space pgfshade \pgf@psfuncs}%
+ \pgf@sys@bp@correct\pgf@x%
+ \edef\pgf@prevx{\pgf@sys@tonumber{\pgf@x}}%
+ \edef\pgf@bounds{\pgf@bounds\space\pgf@sys@tonumber{\pgf@x}}%
+ \edef\pgf@encode{\pgf@encode\space0 1}%
+ \edef\pgf@singlefunc{\space%
+ << /FunctionType 2 /Domain [0 1] /C0
+ [\pgf@prevcolor] /C1 [\pgf@gray] /N 1 >> }% <<
+ \edef\pgf@funcs{\pgf@funcs\space%
+ << /FunctionType 2 /Domain [\pgf@doma\space\pgf@domb] /C0
+ [\pgf@prevcolor] /C1 [\pgf@gray] /N 1 >> }% <<
+ \edef\pgf@prevcolor{\pgf@gray}%
+ \pgf@parserestgray[}}
+\def\pgf@getgraytuplewithmixin#1{%
+ \pgfutil@definecolor{pgfshadetemp}{gray}{#1}%
+ \pgfutil@ifundefined{applycolormixins}{}{\applycolormixins{pgfshadetemp}}%
+ \pgfutil@extractcolorspec{pgfshadetemp}{\pgf@tempcolor}%
+ \expandafter\pgfutil@convertcolorspec\pgf@tempcolor{gray}{\pgf@graycolor}%
+ \expandafter\pgf@getgray@@\pgf@graycolor!}
+\def\pgf@getgray@@#1!{%
+ \def\pgf@gray{#1}%
+ \def\pgf@sys@gray{{#1}}%
+}
+\def\pgf@convertstring#1{%
+ \def\pgf@conv{}%
+ \pgf@convert#1]%
+ }
+\def\pgf@convert{%
+ \pgfutil@ifnextchar]{\pgfutil@gobble}%done!
+ {%
+ \pgfutil@ifnextchar;{\pgf@grabsemicolor}%
+ {%
+ \pgfutil@ifnextchar c{\pgf@gobblec}%
+ {%
+ \pgfutil@ifnextchar g{\pgf@grabgray}%
+ {%
+ \pgfutil@ifnextchar o{\pgf@grabcolor}%
+ {%
+ \pgfutil@ifnextchar m{\pgf@grabcmyk}%
+ {%
+ \pgfutil@ifnextchar r{\pgf@grabrgb}%
+ {\pgferror{Illformed shading
+ specification}\pgf@convert}%
+ }%
+ }%
+ }%
+ }%
+ }%
+ }%
+}
+\def\pgf@grabsemicolor;{%
+ \edef\pgf@conv{\pgf@conv; }\pgf@convert}
+\def\pgf@gobblec c{\pgf@convert}
+\def\pgf@savecolor#1{
+ \pgfutil@extractcolorspec{pgf@tempcol}{\pgf@tempcolor}%
+ \expandafter\pgfutil@convertcolorspec\pgf@tempcolor%
+ {\pgf@shading@model}{\pgf@color}%
+ \expandafter\pgf@convget@\expandafter{\pgf@color}{#1}%
+}
+\def\pgf@grabrgb rgb(#1)=(#2,#3,#4){%
+ \pgfutil@definecolor{pgf@tempcol}{rgb}{#2,#3,#4}%
+ \pgf@savecolor{#1}%
+}
+\def\pgf@grabcmyk myk(#1)=(#2,#3,#4,#5){%
+ \pgfutil@definecolor{pgf@tempcol}{cmyk}{#2,#3,#4,#5}%
+ \pgf@savecolor{#1}%
+}
+\def\pgf@grabgray gray(#1)=(#2){%
+ \pgfutil@definecolor{pgf@tempcol}{gray}{#2}%
+ \pgf@savecolor{#1}%
+}
+\def\pgf@grabcolor olor(#1)=(#2){%
+ \pgfutil@colorlet{pgf@tempcol}{#2}%
+ \pgf@savecolor{#1}%
+}
+\def\pgf@convget@#1#2{%
+ \edef\pgf@conv{\pgf@conv \pgf@shading@model(#2)=(#1)}\pgf@convert}
+\newdimen\pgf@xd
+\def\pgfshadecolortocmyk#1#2{%
+ \pgfutil@colorlet{pgf@tempcol}{#1}%
+ \pgfutil@extractcolorspec{pgf@tempcol}{\pgf@tempcolor}%
+ \expandafter\pgfutil@convertcolorspec\pgf@tempcolor{cmyk}{\pgf@cmykcolor}%
+ \expandafter\pgfshading@cmyk\pgf@cmykcolor\relax%
+ \edef#2{\pgf@sys@tonumber{\pgf@xa}\space\pgf@sys@tonumber{\pgf@xb}\space
+ \pgf@sys@tonumber{\pgf@xc}\space\pgf@sys@tonumber{\pgf@xd}\space}%
+ \c@pgf@counta\escapechar%
+ \escapechar-1\relax%
+ \expandafter\edef\csname\string#2cyan\endcsname{%
+ \pgf@sys@tonumber{\pgf@xa}\space}%
+ \expandafter\edef\csname\string#2magenta\endcsname{%
+ \pgf@sys@tonumber{\pgf@xb}\space}%
+ \expandafter\edef\csname\string#2yellow\endcsname{%
+ \pgf@sys@tonumber{\pgf@xc}\space}%
+ \expandafter\edef\csname\string#2black\endcsname{%
+ \pgf@sys@tonumber{\pgf@xd}\space}%
+ \escapechar\c@pgf@counta%
+}
+\def\pgfshading@cmyk#1,#2,#3,#4\relax{%
+ \pgf@xa=#1pt%
+ \pgf@xb=#2pt%
+ \pgf@xc=#3pt%
+ \pgf@xd=#4pt%
+}
+\def\pgfshadecolortogray#1#2{%
+ \pgfutil@colorlet{pgf@tempcol}{#1}%
+ \pgfutil@extractcolorspec{pgf@tempcol}{\pgf@tempcolor}%
+ \expandafter\pgfutil@convertcolorspec\pgf@tempcolor{gray}{\pgf@graycolor}%
+ \expandafter\pgfshading@gray\pgf@graycolor\relax%
+ \edef#2{\pgf@sys@tonumber{\pgf@xa}\space}%
+ \c@pgf@counta\escapechar%
+ \escapechar-1\relax%
+ \expandafter\edef\csname\string#2gray\endcsname{%
+ \pgf@sys@tonumber{\pgf@xa}\space}%
+ \escapechar\c@pgf@counta%
+}
+\def\pgfshading@gray#1\relax{%
+ \pgf@xa=#1pt%
+}
+\def\pgfdeclarehorizontalshading{%
+ \pgf@setup@model
+ \pgfutil@ifnextchar[%
+ \pgf@declarehorizontalshading{\pgf@declarehorizontalshading[]}}
+\def\pgfdeclareverticalshading{%
+ \pgf@setup@model
+ \pgfutil@ifnextchar[%
+ \pgf@declareverticalshading{\pgf@declareverticalshading[]}}
+\def\pgfdeclareradialshading{%
+ \pgf@setup@model
+ \pgfutil@ifnextchar[%
+ \pgf@declareradialshading{\pgf@declareradialshading[]}}
+\def\pgfdeclarefunctionalshading{%
+ \pgf@setup@model
+ \pgfutil@ifnextchar[
+ \pgf@declarefunctionalshading{\pgf@declarefunctionalshading[]}}
+\def\pgfuseshading#1{%
+ \edef\pgf@shadingname{@pgfshading#1}%
+ \edef\pgf@shadingsavedmodel{@pgfshading#1@model}%
+ \pgf@tryextensions{\pgf@shadingname}{\pgfalternateextension}%
+ \expandafter\pgfutil@ifundefined\expandafter{\pgf@shadingname}%
+ {\pgferror{Undefined shading "#1"}}%
+ {%
+ {%
+ \pgf@setup@model
+ \pgfutil@globalcolorsfalse%
+ \def\pgf@shade@adds{}%
+ \pgfutil@ifundefined{pgf@deps\pgf@shadingname}%
+ {}%
+ {%
+ \edef\@list{\csname pgf@deps\pgf@shadingname\endcsname}%
+ \pgfutil@for\@temp:=\@list\do{%
+ {%
+ \pgfutil@ifundefined{applycolormixins}%
+ {}{\applycolormixins{\@temp}}%
+ \pgfutil@extractcolorspec{\@temp}{\pgf@tempcolor}%
+ \expandafter\pgfutil@ifundefined\expandafter{%
+ \pgf@shadingsavedmodel}
+ {\expandafter\pgfutil@convertcolorspec\pgf@tempcolor{%
+ \pgf@shading@model}{\pgf@color}}%
+ {\expandafter\pgfutil@convertcolorspec\pgf@tempcolor{%
+ \pgf@shadingsavedmodel}{\pgf@color}}%
+ \xdef\pgf@shade@adds{\pgf@shade@adds,\pgf@color}%
+ }%
+ }%
+ }%
+ \expandafter\pgf@strip@shadename\pgf@shadingname!!%
+ \pgfutil@ifundefined{@pgfshading\pgf@basename\pgf@shade@adds!}%
+ {%
+ {%
+ \expandafter\def\expandafter\@temp\expandafter{%
+ \csname pgf@func\pgf@shadingname\endcsname}%
+ \edef\@args{{\pgf@basename\pgf@shade@adds}}%
+ \expandafter\expandafter\expandafter\def%
+ \expandafter\expandafter\expandafter\@@args%
+ \expandafter\expandafter\expandafter{%
+ \csname pgf@args\pgf@shadingname\endcsname}%
+ \expandafter\expandafter\expandafter\@temp\expandafter\@args\@@args%
+ %
+ }%
+ }%
+ {}%
+ \pgf@invokeshading{%
+ \csname @pgfshading\pgf@basename\pgf@shade@adds!\endcsname}%
+ }%
+ }%
+}
+\newif\ifpgfshadingmodelrgb
+\newif\ifpgfshadingmodelcmyk
+\newif\ifpgfshadingmodelgray
+\def\pgf@setup@model{%
+ \pgfshadingmodelrgbtrue
+ \pgfshadingmodelcmykfalse
+ \pgfshadingmodelgrayfalse
+ \XC@sdef\pgf@mod@test{\XC@tgt@mod{natural}}%
+ \def\pgf@shading@functional@range{0 1 0 1 0 1}%
+ \def\pgf@shading@device{/DeviceRGB}%
+ \def\pgf@shading@model{rgb}%
+ \ifx\pgf@mod@test\XC@mod@natural
+ \ifpgfcmykshadingdefault
+ \def\pgf@shading@functional@range{0 1 0 1 0 1 0 1}%
+ \def\pgf@shading@device{/DeviceCMYK}%
+ \def\pgf@shading@model{cmyk}%
+ \pgfshadingmodelrgbfalse
+ \pgfshadingmodelcmyktrue
+ \else
+ \def\pgf@shading@functional@range{0 1 0 1 0 1}%
+ \def\pgf@shading@device{/DeviceRGB}%
+ \def\pgf@shading@model{rgb}%
+ \fi
+ \fi
+ \ifx\pgf@mod@test\XC@mod@cmyk
+ \def\pgf@shading@functional@range{0 1 0 1 0 1 0 1}%
+ \def\pgf@shading@device{/DeviceCMYK}%
+ \def\pgf@shading@model{cmyk}%
+ \pgfshadingmodelrgbfalse
+ \pgfshadingmodelcmyktrue
+ \fi
+ \ifx\pgf@mod@test\XC@mod@gray
+ \def\pgf@shading@functional@range{0 1}%
+ \def\pgf@shading@device{/DeviceGray}%
+ \def\pgf@shading@model{gray}%
+ \pgfshadingmodelrgbfalse
+ \pgfshadingmodelgraytrue
+ \fi
+}
+\def\pgffuncshadingrgbtocmyk{%
+ 1.0 exch sub 3 1 roll
+ 1.0 exch sub 3 1 roll
+ 1.0 exch sub 3 1 roll
+ 3 copy
+ 2 copy gt { exch } if pop
+ 2 copy gt { exch } if pop
+ dup 3 1 roll sub
+ 0.0 2 copy lt { exch } if pop
+ 1.0 2 copy gt { exch } if pop
+ 4 1 roll
+ dup 3 1 roll sub
+ 0.0 2 copy lt { exch } if pop
+ 1.0 2 copy gt { exch } if pop
+ 4 1 roll
+ dup 3 1 roll sub
+ 0.0 2 copy lt { exch } if pop
+ 1.0 2 copy gt { exch } if pop
+ 4 1 roll
+}
+\def\pgffuncshadingrgbtogray{%
+ 0.11 mul exch 0.59 mul add exch 0.3 mul add
+}
+\def\pgffuncshadingcmyktorgb{%
+ % covert to CMY
+ dup 3 1 roll add
+ 1.0 2 copy gt { exch } if pop
+ 4 1 roll
+ dup 3 1 roll add
+ 1.0 2 copy gt { exch } if pop
+ 4 1 roll
+ add
+ 1.0 2 copy gt { exch } if pop
+ 3 1 roll
+ % covert to RGB
+ 1.0 exch sub
+ 3 1 roll
+ 1.0 exch sub
+ 3 1 roll
+ 1.0 exch sub
+ 3 1 roll
+}
+\def\pgffuncshadingcmyktogray{%
+ exch 0.11 mul add exch 0.59 mul add exch 0.3 mul add
+ 1.0 2 copy gt { exch } if pop
+ 1.0 exch sub
+}
+\def\pgffuncshadinggraytorgb{%
+ dup dup
+}
+\def\pgffuncshadinggraytocmyk{%
+ 0.0 0.0 0.0
+ 4 3 roll
+}
+\def\pgfutilgetcmykshadingsdriver{%
+ \expandafter\pgfutil@getcmykshadingsdriver\pgfsysdriver[
+}
+\def\pgfutil@getcmykshadingsdriver pgfsys-#1[{%
+ \edef\pgfsyscmykshadingsdriver{pgfsys-cmykshadings-#1}%
+}
+\pgfutilgetcmykshadingsdriver
+\input\pgfsyscmykshadingsdriver
+\newif\ifpgfcmykshadingdefault
+\DeclareOption{cmyk}{%
+ \pgfcmykshadingdefaulttrue
+}
+\DeclareOption{rgb}{%
+ \pgfcmykshadin@defaultfalse
+}
+\ExecuteOptions{cmyk}
+\ProcessOptions\relax
+%%
+%%
+%% End of file `pgf-cmykshadings.sty'.