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% Copyright 2007 by Till Tantau and 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.
\ProvidesFileRCS[v\pgfversion] $Header: /cvsroot/pgf/pgf/generic/pgf/libraries/shapes/pgflibraryshapes.arrows.code.tex,v 1.1 2008/06/26 16:55:55 tantau Exp $
% keys for shape single arrow
%
% /pgf/single arrow tip angle
% /pgf/single arrow head extend
% /pgf/single arrow head indent
\pgfkeys{/pgf/.cd,
single arrow tip angle/.initial=90,
single arrow head extend/.initial=.25cm,
single arrow head indent/.initial=0cm}
% Shape single arrow
%
%
\pgfdeclareshape{single arrow}{%
\savedmacro\getsinglearrowpoints{%
%
% Get the outer sep.
%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/outer xsep}}%
\edef\xoutersep{\the\pgf@x}%
\pgfmathsetlength\pgf@y{\pgfkeysvalueof{/pgf/outer ysep}}%
\edef\youtersep{\the\pgf@y}%
%
% Get the node dimensions.
%
\pgfmathsetlength\pgf@xa{\pgfkeysvalueof{/pgf/inner xsep}}%
\advance\pgf@xa.5\wd\pgfnodeparttextbox%
\advance\pgf@xa.5\pgflinewidth%
\pgfmathsetlength\pgf@ya{\pgfkeysvalueof{/pgf/inner ysep}}%
\advance\pgf@ya.5\ht\pgfnodeparttextbox%
\advance\pgf@ya.5\dp\pgfnodeparttextbox%
\advance\pgf@ya.5\pgflinewidth%
\ifpgfshapeborderusesincircle%
\ifdim\pgf@xa<\pgf@ya%
\pgf@xa\pgf@ya%
\fi%
\pgf@xa1.41421\pgf@xa%
\pgf@ya\pgf@xa%
\pgfmathsetmacro\rotate{\pgfkeysvalueof{/pgf/shape border rotate}}%
\ifdim\xoutersep>\youtersep\relax%
\let\youtersep\xoutersep%
\else%
\let\xoutersep\youtersep%
\fi%
\else%
%
% Round the rotation.
%
\pgfmathsetmacro\rotate{\pgfkeysvalueof{/pgf/shape border rotate}}%
\pgfmathmod@{\rotate}{360}%
\afterassignment\pgfmath@gobbletilpgfmath@%
\expandafter\c@pgf@counta\pgfmathresult\relax\pgfmath@%
\advance\c@pgf@counta45\relax%
\divide\c@pgf@counta90\relax%
\multiply\c@pgf@counta90\relax%
\ifnum\c@pgf@counta<0\relax%
\advance\c@pgf@counta360\relax%
\fi%
\edef\rotate{\the\c@pgf@counta}%
%
% Calculate the width and height of the node
% contents, according to any border rotation.
%
\ifnum\c@pgf@counta=90\relax%
\pgf@x\pgf@xa%
\pgf@xa\pgf@ya%
\pgf@ya\pgf@x%
\let\pgfmathresult\xoutersep%
\let\xoutersep\youtersep%
\let\youtersep\pgfmathresult%
\else%
\ifnum\c@pgf@counta=270\relax%
\pgf@x\pgf@xa%
\pgf@xa\pgf@ya%
\pgf@ya\pgf@x%
\let\pgfmathresult\xoutersep%
\let\xoutersep\youtersep%
\let\youtersep\pgfmathresult%
\fi%
\fi%
\fi%
\addtosavedmacro\rotate%
%
% Get some useful trig stuff.
%
\pgfmathdivide{\pgfkeysvalueof{/pgf/single arrow tip angle}}{2}%
\let\halftipangle\pgfmathresult%
\pgfmathcosec@{\halftipangle}%
\let\cosechalftipangle\pgfmathresult%
\pgfmathcos@{\halftipangle}%
\pgfutil@tempdima\pgfmathresult pt\relax%
\pgfutil@tempdima\cosechalftipangle\pgfutil@tempdima%
\edef\cothalftipangle{\pgfmath@tonumber{\pgfutil@tempdima}}%
\pgfmathreciprocal@{\pgfmathresult}%
\let\sechalftipangle\pgfmathresult%
\pgfmathsin@{\halftipangle}%
\pgfutil@tempdima\pgfmathresult pt\relax%
\pgfutil@tempdima\sechalftipangle\pgfutil@tempdima%
\edef\tanhalftipangle{\pgfmath@tonumber{\pgfutil@tempdima}}%
%
% Get the single arrow head extend, and adjust for minimum width.
%
\pgf@xb\pgf@ya%
\pgf@xb\cothalftipangle\pgf@xb%
\pgfmathsetlength\pgf@xc{\pgfkeysvalueof{/pgf/single arrow head extend}}%
\pgf@yc\pgf@xc%
\advance\pgf@xc\pgf@ya%
\pgfmathsetlength\pgfutil@tempdimb{\pgfkeysvalueof{/pgf/minimum width}}%
\ifdim\pgf@xc<.5\pgfutil@tempdimb%
\pgfutil@tempdimb.5\pgfutil@tempdimb%
\pgfmathdivide@{\pgfmath@tonumber{\pgfutil@tempdimb}}{\pgfmath@tonumber{\pgf@xc}}%
\pgf@ya\pgfmathresult\pgf@ya%
\pgf@xc\pgfmathresult\pgf@xc%
\pgf@yc\pgfmathresult\pgf@yc%
\pgf@xb\pgfmathresult\pgf@xb%
\fi%
%
% Now calculate the height of the arrow and adjust for minimum height.
%
\advance\pgf@xc-\pgf@ya%
\pgf@xc\cothalftipangle\pgf@xc%
\pgf@xa2.0\pgf@xa%
\advance\pgf@xa\pgf@xb%
\pgfmathsetlength\pgfutil@tempdimb{\pgfkeysvalueof{/pgf/minimum height}}%
\ifdim\pgf@xa<\pgfutil@tempdimb%
\pgf@xa\pgfutil@tempdimb%
\fi%
\advance\pgf@xa-\pgf@xb%
\pgf@xa.5\pgf@xa%
\pgfmathsetlength\pgfutil@tempdima{\pgfkeysvalueof{/pgf/single arrow head indent}}%
%
% Now:
%
% xa - .5 * width of the node minus xb.
% ya - .5 * height of the node contents.
% xb - distance from the end of the node contents to the arrow tip.
% xc - distance from the end of the node contents to the back end of the arrow head.
% yc - distance from the top of the node contents to the top end of the arrow head.
%
\pgfsavepgf@process\centerpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y.5\ht\pgfnodeparttextbox%
\advance\pgf@y-.5\dp\pgfnodeparttextbox%
}%
\pgfsavepgf@process\basepoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y0pt%
}%
\pgfsavepgf@process\midpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@y{+.5ex}%
}%
%
% As the arrow is symmetrical it can be described by only four points:
%
\pgfsavepgf@process\arrowtip{%
\pgf@x\pgf@xa%
\advance\pgf@x\pgf@xb%
\pgf@y0pt\relax%
}%
\pgfsavepgf@process\beforearrowtip{%
\pgf@x\pgf@xa%
\advance\pgf@x-\pgf@xc%
\pgf@y\pgf@ya%
\advance\pgf@y\pgf@yc%
}%
\pgfsavepgf@process\beforearrowhead{%
\pgf@x\pgf@xa%
\advance\pgf@x-\pgf@xc%
\advance\pgf@x\pgfutil@tempdima%
\pgf@y\pgf@ya%
}%
\pgfsavepgf@process\afterarrowtail{%
\pgf@x-\pgf@xa%
\pgf@y\pgf@ya%
}%
%
% Calculate the anchor point at the arrow tip...
%
\pgfsavepgf@process\arrowtipanchor{%
\pgfpointadd{\centerpoint}{\arrowtip}%
\pgf@xa\xoutersep\relax%
\advance\pgf@x\cosechalftipangle\pgf@xa%
}%
\advance\pgf@x.5\wd\pgfnodeparttextbox%
\edef\externalradius{\the\pgf@x}%
\addtosavedmacro\externalradius%
%
% ...and the rest of the points.
%
\pgfmathanglebetweenlines{\beforearrowtip}{\beforearrowhead}{\beforearrowtip}{\arrowtip}%
\pgf@xa\xoutersep\relax%
\pgfutil@tempdima\pgfmathresult pt\relax%
\pgfutil@tempdima.5\pgfutil@tempdima%
\pgfmathcosec@{\pgfmath@tonumber{\pgfutil@tempdima}}%
\pgf@xa\pgfmathresult\pgf@xa%
\pgfutil@tempdima-\pgfutil@tempdima%
\advance\pgfutil@tempdima180pt\relax%
\advance\pgfutil@tempdima-\halftipangle pt\relax%
%
\pgfsavepgf@process\beforearrowtipanchor{%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgf@xa}%
\pgf@xb\pgf@x%
\pgf@yb\pgf@y%
\pgf@process{\pgfpointadd{\centerpoint}{\beforearrowtip}}%
\advance\pgf@x\pgf@xb%
\advance\pgf@y\pgf@yb%
}%
\pgfmathanglebetweenpoints{\beforearrowhead}{\beforearrowtip}%
\pgfutil@tempdima-\pgfmathresult pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdima.5\pgfutil@tempdima%
\pgfmathcosec@{\pgfmath@tonumber{\pgfutil@tempdima}}%
\pgf@xa\xoutersep\relax%
\pgf@xa\pgfmathresult\pgf@xa%
\pgfutil@tempdima-\pgfutil@tempdima%
\advance\pgfutil@tempdima180pt\relax%
\pgfsavepgf@process\beforearrowheadanchor{%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgf@xa}%
\pgf@xb\pgf@x%
\pgf@yb\pgf@y%
\pgf@process{\pgfpointadd{\centerpoint}{\beforearrowhead}}%
\advance\pgf@x\pgf@xb%
\advance\pgf@y\pgf@yb%
}%
\pgfsavepgf@process\afterarrowtailanchor{%
\pgfpointadd{\centerpoint}{\afterarrowtail}%
\advance\pgf@x-\xoutersep\relax%
\advance\pgf@y\youtersep\relax%
}%
%
\pgfmathanglebetweenpoints{\centerpoint}{\beforearrowtipanchor}%
\let\center@angle@beforearrowtip\pgfmathresult%
\pgfmathanglebetweenpoints{\centerpoint}{\beforearrowheadanchor}%
\let\center@angle@beforearrowhead\pgfmathresult%
\pgfmathanglebetweenpoints{\centerpoint}{\afterarrowtailanchor}%
\let\center@angle@afterarrowtail\pgfmathresult%
\addtosavedmacro\center@angle@beforearrowtip%
\addtosavedmacro\center@angle@beforearrowhead%
\addtosavedmacro\center@angle@afterarrowtail%
%
\pgfmathanglebetweenpoints{\midpoint}{\beforearrowtipanchor}%
\let\mid@angle@beforearrowtip\pgfmathresult%
\pgfmathanglebetweenpoints{\midpoint}{\beforearrowheadanchor}%
\let\mid@angle@beforearrowhead\pgfmathresult%
\pgfmathanglebetweenpoints{\midpoint}{\afterarrowtailanchor}%
\let\mid@angle@afterarrowtail\pgfmathresult%
\addtosavedmacro\mid@angle@beforearrowtip%
\addtosavedmacro\mid@angle@beforearrowhead%
\addtosavedmacro\mid@angle@afterarrowtail%
%
\pgfmathanglebetweenpoints{\basepoint}{\beforearrowtipanchor}%
\let\base@angle@beforearrowtip\pgfmathresult%
\pgfmathanglebetweenpoints{\basepoint}{\beforearrowheadanchor}%
\let\base@angle@beforearrowhead\pgfmathresult%
\pgfmathanglebetweenpoints{\basepoint}{\afterarrowtailanchor}%
\let\base@angle@afterarrowtail\pgfmathresult%
\addtosavedmacro\base@angle@beforearrowtip%
\addtosavedmacro\base@angle@beforearrowhead%
\addtosavedmacro\base@angle@afterarrowtail%
%
\addtosavedmacro\arrowtipanchor%
\addtosavedmacro\beforearrowtipanchor%
\addtosavedmacro\beforearrowheadanchor%
\addtosavedmacro\afterarrowtailanchor%
}
\savedanchor\centerpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y.5\ht\pgfnodeparttextbox%
\advance\pgf@y-.5\dp\pgfnodeparttextbox%
}%
\savedanchor\midpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@y{+0.5ex}%
}%
\savedanchor\basepoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y0pt%
}%
\anchor{center}{\centerpoint}%
\anchor{mid}{\midpoint}%
\anchor{mid east}{%
\getsinglearrowpoints%
\let\pgf@singlearrow@referencepoint\midpoint%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{\externalradius}{0pt}}%
}
\anchor{mid west}{%
\getsinglearrowpoints%
\let\pgf@singlearrow@referencepoint\midpoint%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{-\externalradius}{0pt}}%
}
\anchor{base}{\basepoint}%
\anchor{base east}{%
\getsinglearrowpoints%
\let\pgf@singlearrow@referencepoint\basepoint%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{\externalradius}{0pt}}%
}
\anchor{base west}{%
\getsinglearrowpoints%
\let\pgf@singlearrow@referencepoint\basepoint%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{-\externalradius}{0pt}}%
}
\anchor{north}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{0pt}{\externalradius}}%
}
\anchor{south}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{0pt}{-\externalradius}}%
}
\anchor{east}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{\externalradius}{0pt}}%
}
\anchor{west}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{-\externalradius}{0pt}}%
}
\anchor{north east}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{\externalradius}{\externalradius}}%
}
\anchor{south east}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{\externalradius}{-\externalradius}}%
}
\anchor{south west}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{-\externalradius}{-\externalradius}}%
}
\anchor{north west}{%
\getsinglearrowpoints%
\csname pgf@anchor@single arrow@border\endcsname{\pgfqpoint{-\externalradius}{\externalradius}}%
}
\anchor{before head}{%
\getsinglearrowpoints%
\pgfmathrotatepointaround{\beforearrowheadanchor}{\centerpoint}{\rotate}%
}%
\anchor{before tip}{%
\getsinglearrowpoints%
\pgfmathrotatepointaround{\beforearrowtipanchor}{\centerpoint}{\rotate}%
}%
\anchor{tip}{%
\getsinglearrowpoints%
\pgfmathrotatepointaround{\arrowtipanchor}{\centerpoint}{\rotate}%
}%
\anchor{after tip}{%
\getsinglearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}
\anchor{after head}{%
\getsinglearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}
\anchor{before tail}{%
\getsinglearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\afterarrowtailanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}
\anchor{after tail}{%
\getsinglearrowpoints%
\pgfmathrotatepointaround{\afterarrowtailanchor}{\centerpoint}{\rotate}%
}
\anchor{tail}{%
\getsinglearrowpoints%
\pgfpointlineattime{0.5}{%
\pgfmathrotatepointaround{\afterarrowtailanchor}{\centerpoint}{\rotate}%
}%
{%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\afterarrowtailanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}%
}%
\backgroundpath{%
{%
\pgftransformshift{\centerpoint}%
\pgftransformrotate{\rotate}%
\pgfpathmoveto{\arrowtip}%
\pgfpathlineto{\beforearrowtip}%
\pgfpathlineto{\beforearrowhead}%
\pgfpathlineto{\afterarrowtail}%
\pgfpathlineto{\afterarrowtail\pgf@y-\pgf@y}%
\pgfpathlineto{\beforearrowhead\pgf@y-\pgf@y}%
\pgfpathlineto{\beforearrowtip\pgf@y-\pgf@y}%
}%
\pgfpathclose%
}%
\anchorborder{%
\pgfsavepgf@process\externalpoint{}%
\getsinglearrowpoints%
\pgfutil@ifundefined{pgf@singlearrow@referencepoint}{\let\referencepoint\centerpoint}%
{\let\referencepoint\pgf@singlearrow@referencepoint}%
\pgfsavepgf@process\externalpoint{%
\externalpoint%
\pgf@xa\pgf@x%
\pgf@ya\pgf@y%
\referencepoint%
\advance\pgf@x\pgf@xa%
\advance\pgf@y\pgf@ya}%
\pgfmathanglebetweenpoints{\centerpoint}{\externalpoint}%
\pgfmathsubtract@{\pgfmathresult}{\rotate}%
\ifdim\pgfmathresult pt<0pt\relax%
\pgfmathadd@{\pgfmathresult}{360}%
\fi%
\let\externalangle\pgfmathresult%
\pgf@x\externalangle pt\relax%
\ifx\referencepoint\midpoint%
\pgf@xa\mid@angle@beforearrowtip pt\relax%
\pgf@xb\mid@angle@beforearrowhead pt\relax%
\pgf@xc\mid@angle@afterarrowtail pt\relax%
\else%
\ifx\referencepoint\basepoint%
\pgf@xa\base@angle@beforearrowtip pt\relax%
\pgf@xb\base@angle@beforearrowhead pt\relax%
\pgf@xc\base@angle@afterarrowtail pt\relax%
\else%
\pgf@xa\center@angle@beforearrowtip pt\relax%
\pgf@xb\center@angle@beforearrowhead pt\relax%
\pgf@xc\center@angle@afterarrowtail pt\relax%
\fi%
\fi%
\ifdim\pgf@x<\pgf@xa%
\let\firstpoint\arrowtipanchor%
\let\secondpoint\beforearrowtipanchor%
\else%
\ifdim\pgf@x<\pgf@xb%
\ifdim\pgf@xb<\pgf@xa%
\let\firstpoint\arrowtipanchor%
\let\secondpoint\beforearrowtipanchor%
\else%
\let\firstpoint\beforearrowheadanchor%
\let\secondpoint\beforearrowtipanchor%
\fi%
\else%
\ifdim\pgf@x<\pgf@xc%
\let\firstpoint\beforearrowheadanchor%
\let\secondpoint\afterarrowtailanchor%
\else%
\pgf@xc-\pgf@xc%
\advance\pgf@xc360pt\relax%
\ifdim\pgf@x<\pgf@xc%
\let\firstpoint\afterarrowtailanchor%
\pgfsavepgf@process\secondpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\afterarrowtailanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}%
}%
\else%
\pgf@xa-\pgf@xa%
\advance\pgf@xa360pt\relax%
\pgf@xb-\pgf@xb%
\advance\pgf@xb360pt\relax%
\ifdim\pgf@x<\pgf@xa%
\ifdim\pgf@x<\pgf@xb%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\afterarrowtailanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}%
}%
\pgfsavepgf@process\secondpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}%
}%
\else%
\ifdim\pgf@xb<\pgf@xa%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}%
}%
\else%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\arrowtipanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}%
}%
\fi%
\pgfsavepgf@process\secondpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}%
}%
\fi%
\else%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}%
}%
\let\secondpoint\arrowtipanchor%
\fi%
\fi%
\fi%
\fi%
\fi%
\pgfsavepgf@process\firstpoint{%
\pgfmathrotatepointaround{\firstpoint}{\centerpoint}{\rotate}%
}%
\pgfsavepgf@process\secondpoint{%
\pgfmathrotatepointaround{\secondpoint}{\centerpoint}{\rotate}%
}%
\pgfpointintersectionoflines{\referencepoint}{\externalpoint}%
{\firstpoint}{\secondpoint}%
}%
}
% keys for shape double arrow
%
% /pgf/double arrow tip angle
% /pgf/double arrow head sep
\pgfkeys{/pgf/.cd,
double arrow tip angle/.initial=90,
double arrow head extend/.initial=.25cm,
double arrow head indent/.initial=0cm}
% Shape double arrow
%
%
\pgfdeclareshape{double arrow}{%
\savedmacro\getdoublearrowpoints{%
%
% Get the outer sep.
%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/outer xsep}}%
\edef\xoutersep{\the\pgf@x}%
\pgfmathsetlength\pgf@y{\pgfkeysvalueof{/pgf/outer ysep}}%
\edef\youtersep{\the\pgf@y}%
%
% Get the node dimensions.
%
\pgfmathsetlength\pgf@xa{\pgfkeysvalueof{/pgf/inner xsep}}%
\advance\pgf@xa.5\wd\pgfnodeparttextbox%
\advance\pgf@xa.5\pgflinewidth%
\pgfmathsetlength\pgf@ya{\pgfkeysvalueof{/pgf/inner ysep}}%
\advance\pgf@ya.5\ht\pgfnodeparttextbox%
\advance\pgf@ya.5\dp\pgfnodeparttextbox%
\advance\pgf@ya.5\pgflinewidth%
\ifpgfshapeborderusesincircle%
\ifdim\pgf@xa<\pgf@ya%
\pgf@xa\pgf@ya%
\fi%
\pgf@xa1.41421\pgf@xa%
\pgf@ya\pgf@xa%
\pgfmathsetmacro\rotate{\pgfkeysvalueof{/pgf/shape border rotate}}%
\ifdim\xoutersep>\youtersep\relax%
\let\youtersep\xoutersep%
\else%
\let\xoutersep\youtersep%
\fi%
\else%
%
% Round the rotation.
%
\pgfmathsetmacro\rotate{\pgfkeysvalueof{/pgf/shape border rotate}}
\pgfmathmod@{\rotate}{360}%
\afterassignment\pgfmath@gobbletilpgfmath@%
\expandafter\c@pgf@counta\pgfmathresult\relax\pgfmath@%
\advance\c@pgf@counta45\relax%
\divide\c@pgf@counta90\relax%
\multiply\c@pgf@counta90\relax%
\ifnum\c@pgf@counta<0\relax%
\advance\c@pgf@counta360\relax%
\fi%
\edef\rotate{\the\c@pgf@counta}%
%
% Calculate the width and height of the node
% contents, according to any border rotation.
%
\ifnum\c@pgf@counta=90\relax%
\pgf@x\pgf@xa%
\pgf@xa\pgf@ya%
\pgf@ya\pgf@x%
\let\pgfmathresult\xoutersep%
\let\xoutersep\youtersep%
\let\youtersep\pgfmathresult%
\else%
\ifnum\c@pgf@counta=270\relax%
\pgf@x\pgf@xa%
\pgf@xa\pgf@ya%
\pgf@ya\pgf@x%
\let\pgfmathresult\xoutersep%
\let\xoutersep\youtersep%
\let\youtersep\pgfmathresult%
\fi%
\fi%
\fi%
\addtosavedmacro\rotate%
%
% Get some useful trig stuff.
%
\pgfmathdivide{\pgfkeysvalueof{/pgf/double arrow tip angle}}{2}%
\let\halftipangle\pgfmathresult%
\pgfmathcosec@{\halftipangle}%
\let\cosechalftipangle\pgfmathresult%
\pgfmathcos@{\halftipangle}%
\pgfutil@tempdima\pgfmathresult pt\relax%
\pgfutil@tempdima\cosechalftipangle\pgfutil@tempdima%
\edef\cothalftipangle{\pgfmath@tonumber{\pgfutil@tempdima}}%
\pgfmathreciprocal@{\pgfmathresult}%
\let\sechalftipangle\pgfmathresult%
\pgfmathsin@{\halftipangle}%
\pgfutil@tempdima\pgfmathresult pt\relax%
\pgfutil@tempdima\sechalftipangle\pgfutil@tempdima%
\edef\tanhalftipangle{\pgfmath@tonumber{\pgfutil@tempdima}}%
%
% Get the double arrow head extend, and adjust for minimum width.
%
\pgf@xb\pgf@ya%
\pgf@xb\cothalftipangle\pgf@xb%
\pgfmathsetlength\pgf@xc{\pgfkeysvalueof{/pgf/double arrow head extend}}%
\pgf@yc\pgf@xc%
\advance\pgf@xc\pgf@ya%
\pgfmathsetlength\pgfutil@tempdimb{\pgfkeysvalueof{/pgf/minimum width}}%
\ifdim\pgf@xc<.5\pgfutil@tempdimb%
\pgfutil@tempdimb.5\pgfutil@tempdimb%
\pgfmathdivide@{\pgfmath@tonumber{\pgfutil@tempdimb}}{\pgfmath@tonumber{\pgf@xc}}%
\pgf@ya\pgfmathresult\pgf@ya%
\pgf@xc\pgfmathresult\pgf@xc%
\pgf@yc\pgfmathresult\pgf@yc%
\pgf@xb\pgfmathresult\pgf@xb%
\fi%
%
% Now calculate the height of the arrow and adjust for minimum height.
%
\advance\pgf@xc-\pgf@ya%
\pgf@xc\cothalftipangle\pgf@xc%
\advance\pgf@xa\pgf@xb%
\pgf@xa2.0\pgf@xa%
\pgfmathsetlength\pgfutil@tempdimb{\pgfkeysvalueof{/pgf/minimum height}}%
\ifdim\pgf@xa<\pgfutil@tempdimb%
\pgf@xa\pgfutil@tempdimb%
\fi%
\pgf@xa.5\pgf@xa%
\advance\pgf@xa-\pgf@xb%
\pgfmathsetlength\pgfutil@tempdima{\pgfkeysvalueof{/pgf/double arrow head indent}}%
%
% Now:
%
% xa - .5 * width of the node minus xb.
% ya - .5 * height of the node contents.
% xb - distance from the end of the node contents to the arrow tip.
% xc - distance from the end of the node contents to the back end of the arrow head.
% yc - distance from the top of the node contents to the top end of the arrow head.
%
\pgfsavepgf@process\centerpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y.5\ht\pgfnodeparttextbox%
\advance\pgf@y-.5\dp\pgfnodeparttextbox%
}%
\pgfsavepgf@process\basepoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y0pt%
}%
\pgfsavepgf@process\midpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@y{+.5ex}%
}%
%
% As the arrow is symmetrical it can be described by only 3 points:
%
\pgfsavepgf@process\arrowtip{%
\pgf@x\pgf@xa%
\advance\pgf@x\pgf@xb%
\pgf@y0pt\relax%
}%
\pgfsavepgf@process\beforearrowtip{%
\pgf@x\pgf@xa%
\advance\pgf@x-\pgf@xc%
\pgf@y\pgf@ya%
\advance\pgf@y\pgf@yc%
}%
\pgfsavepgf@process\beforearrowhead{%
\pgf@x\pgf@xa%
\advance\pgf@x-\pgf@xc%
\advance\pgf@x\pgfutil@tempdima%
\pgf@y\pgf@ya%
}%
%
% Calculate the anchor point at the arrow tip.
%
\pgfsavepgf@process\arrowtipanchor{%
\pgfpointadd{\centerpoint}{\arrowtip}%
\pgf@xa\xoutersep\relax%
\advance\pgf@x\cosechalftipangle\pgf@xa%
}%
\advance\pgf@x.5\wd\pgfnodeparttextbox%
\edef\externalradius{\the\pgf@x}%
\addtosavedmacro\externalradius%
%
%
\pgfmathanglebetweenlines{\beforearrowtip}{\beforearrowhead}{\beforearrowtip}{\arrowtip}%
\pgf@xa\xoutersep\relax%
\pgfutil@tempdima\pgfmathresult pt\relax%
\pgfutil@tempdima.5\pgfutil@tempdima%
\pgfmathcosec@{\pgfmath@tonumber{\pgfutil@tempdima}}%
\pgf@xa\pgfmathresult\pgf@xa%
\pgfutil@tempdima-\pgfutil@tempdima%
\advance\pgfutil@tempdima180pt\relax%
\advance\pgfutil@tempdima-\halftipangle pt\relax%
\pgfsavepgf@process\beforearrowtipanchor{%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgf@xa}%
\pgf@xb\pgf@x%
\pgf@yb\pgf@y%
\pgf@process{\pgfpointadd{\centerpoint}{\beforearrowtip}}%
\advance\pgf@x\pgf@xb%
\advance\pgf@y\pgf@yb%
}%
\pgfmathanglebetweenpoints{\beforearrowhead}{\beforearrowtip}%
\pgfutil@tempdima-\pgfmathresult pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdima.5\pgfutil@tempdima%
\pgfmathcosec@{\pgfmath@tonumber{\pgfutil@tempdima}}%
\pgf@xa\xoutersep\relax%
\pgf@xa\pgfmathresult\pgf@xa%
\pgfutil@tempdima-\pgfutil@tempdima%
\advance\pgfutil@tempdima180pt\relax%
\pgfsavepgf@process\beforearrowheadanchor{%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgf@xa}%
\pgf@xb\pgf@x%
\pgf@yb\pgf@y%
\pgf@process{\pgfpointadd{\centerpoint}{\beforearrowhead}}%
\advance\pgf@x\pgf@xb%
\advance\pgf@y\pgf@yb%
}%
%
\pgfmathanglebetweenpoints{\centerpoint}{\beforearrowtipanchor}%
\let\center@angle@beforearrowtip\pgfmathresult%
\addtosavedmacro\center@angle@beforearrowtip%
%
\pgfmathanglebetweenpoints{\midpoint}{\beforearrowtipanchor}%
\let\mid@angle@beforearrowtip\pgfmathresult%
\addtosavedmacro\mid@angle@beforearrowtip%
%
\pgfmathanglebetweenpoints{\basepoint}{\beforearrowtipanchor}%
\let\base@angle@beforearrowtip\pgfmathresult%
\addtosavedmacro\base@angle@beforearrowtip%
%
\addtosavedmacro\arrowtipanchor%
\addtosavedmacro\beforearrowtipanchor%
\addtosavedmacro\beforearrowheadanchor%
}
\savedanchor\centerpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y.5\ht\pgfnodeparttextbox%
\advance\pgf@y-.5\dp\pgfnodeparttextbox%
}%
\savedanchor\midpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@y{+0.5ex}%
}%
\savedanchor\basepoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y0pt%
}%
\anchor{center}{\centerpoint}%
\anchor{mid}{\midpoint}%
\anchor{mid east}{%
\getdoublearrowpoints%
\let\pgf@singlearrow@referencepoint\midpoint%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{\externalradius}{0pt}}%
}
\anchor{mid west}{%
\getdoublearrowpoints%
\let\pgf@singlearrow@referencepoint\midpoint%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{-\externalradius}{0pt}}%
}
\anchor{base}{\basepoint}%
\anchor{base east}{%
\getdoublearrowpoints%
\let\pgf@singlearrow@referencepoint\basepoint%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{\externalradius}{0pt}}%
}
\anchor{base west}{%
\getdoublearrowpoints%
\let\pgf@singlearrow@referencepoint\basepoint%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{-\externalradius}{0pt}}%
}
\anchor{north}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{0pt}{\externalradius}}%
}
\anchor{south}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{0pt}{-\externalradius}}%
}
\anchor{east}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{\externalradius}{0pt}}%
}
\anchor{west}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{-\externalradius}{0pt}}%
}
\anchor{north east}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{\externalradius}{\externalradius}}%
}
\anchor{south east}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{\externalradius}{-\externalradius}}%
}
\anchor{south west}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{-\externalradius}{-\externalradius}}%
}
\anchor{north west}{%
\getdoublearrowpoints%
\csname pgf@anchor@double arrow@border\endcsname{\pgfqpoint{-\externalradius}{\externalradius}}%
}
\anchor{before head 1}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{\beforearrowheadanchor}{\centerpoint}{\rotate}%
}%
\anchor{before tip 1}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{\beforearrowtipanchor}{\centerpoint}{\rotate}%
}%
\anchor{tip 1}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{\arrowtipanchor}{\centerpoint}{\rotate}%
}%
\anchor{after tip 1}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}
\anchor{after head 1}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}
\anchor{before head 2}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}%
\anchor{before tip 2}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}%
\anchor{tip 2}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\arrowtipanchor}%
\pgf@x-\pgf@x%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}%
\anchor{after tip 2}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@x-\pgf@x%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}
\anchor{after head 2}{%
\getdoublearrowpoints%
\pgfmathrotatepointaround{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@x-\pgf@x%
}{\centerpoint}}%
{\centerpoint}{\rotate}%
}
\backgroundpath{%
{%
\pgftransformshift{\centerpoint}%
\pgftransformrotate{\rotate}%
\pgfpathmoveto{\arrowtip}%
\pgfpathlineto{\beforearrowtip}%
\pgfpathlineto{\beforearrowhead}%
\pgfpathlineto{\beforearrowhead\pgf@x-\pgf@x}%
\pgfpathlineto{\beforearrowtip\pgf@x-\pgf@x}%
\pgfpathlineto{\arrowtip\pgf@x-\pgf@x}%
\pgfpathlineto{\beforearrowtip\pgf@x-\pgf@x\pgf@y-\pgf@y}%
\pgfpathlineto{\beforearrowhead\pgf@x-\pgf@x\pgf@y-\pgf@y}%
\pgfpathlineto{\beforearrowhead\pgf@y-\pgf@y}%
\pgfpathlineto{\beforearrowtip\pgf@y-\pgf@y}%
}%
\pgfpathclose%
}%
\anchorborder{%
\pgfsavepgf@process\externalpoint{}%
\getdoublearrowpoints%
\pgfutil@ifundefined{pgf@singlearrow@referencepoint}{\let\referencepoint\centerpoint}%
{\let\referencepoint\pgf@singlearrow@referencepoint}%
\pgfsavepgf@process\externalpoint{%
\externalpoint%
\pgf@xa\pgf@x%
\pgf@ya\pgf@y%
\referencepoint%
\advance\pgf@x\pgf@xa%
\advance\pgf@y\pgf@ya}%
\pgfmathanglebetweenpoints{\centerpoint}{\externalpoint}%
\pgfmathsubtract@{\pgfmathresult}{\rotate}%
\ifdim\pgfmathresult pt<0pt\relax%
\pgfmathadd@{\pgfmathresult}{360}%
\fi%
\let\externalangle\pgfmathresult%
\pgf@x\externalangle pt\relax%
\ifx\referencepoint\midpoint%
\pgf@xa\mid@angle@beforearrowtip pt\relax%
\else%
\ifx\referencepoint\basepoint%
\pgf@xa\base@angle@beforearrowtip pt\relax%
\else%
\pgf@xa\center@angle@beforearrowtip pt\relax%
\fi%
\fi%
\ifdim\pgf@x<180pt\relax%
\ifdim\pgf@x<\pgf@xa%
\let\firstpoint\arrowtipanchor%
\let\secondpoint\beforearrowtipanchor%
\else%
\pgf@xa-\pgf@xa%
\advance\pgf@xa180pt\relax%
\ifdim\pgf@x<\pgf@xa%
\let\firstpoint\beforearrowheadanchor%
\pgfsavepgf@process\secondpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@x-\pgf@x
}{\centerpoint}}%
\else%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@x-\pgf@x
}{\centerpoint}}%
\pgfsavepgf@process\secondpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\arrowtipanchor}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}{\centerpoint}}%
\fi%
\fi%
\else%
\pgf@xa-\pgf@xa%
\advance\pgf@xa360pt\relax%
\ifdim\pgf@x<\pgf@xa%
\pgf@xa-\pgf@xa%
\advance\pgf@xa540pt\relax%
\ifdim\pgf@x<\pgf@xa%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\arrowtipanchor}%
\pgf@x-\pgf@x%
}{\centerpoint}}%
\pgfsavepgf@process\secondpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowtipanchor}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}{\centerpoint}}%
\else%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}{\centerpoint}}%
\pgfsavepgf@process\secondpoint{%
\pgfpointadd{%
\pgfpointdiff{\centerpoint}{\beforearrowheadanchor}%
\pgf@y-\pgf@y%
}{\centerpoint}}%
\fi%
\else%
\pgfsavepgf@process\firstpoint{%
\pgfpointadd{%
\pgfpointdiff{\beforearrowtipanchor}{\centerpoint}%
\pgf@x-\pgf@x%
}{\centerpoint}}%
\let\secondpoint\arrowtipanchor%
\fi%
\fi%
\pgfsavepgf@process\firstpoint{%
\pgfmathrotatepointaround{\firstpoint}{\centerpoint}{\rotate}%
}%
\pgfsavepgf@process\secondpoint{%
\pgfmathrotatepointaround{\secondpoint}{\centerpoint}{\rotate}%
}%
\pgfpointintersectionoflines{\referencepoint}{\externalpoint}%
{\firstpoint}{\secondpoint}%
}%
}
%
% Internal macros for the arrow box/shape.
%
\def\pgf@lib@arrowbox@parsearrowlength#1#2#3{%
\edef\pgf@lib@temp{#3}%
\edef\pgf@lib@marshal{%
\noexpand\pgfutil@in@{none}{\pgf@lib@temp}%
}%
\pgf@lib@marshal%
\ifpgfutil@in@%
#10pt\relax%
\else%
\afterassignment\pgfmath@gobbletilpgfmath@%
\expandafter#1\pgf@lib@temp\relax\pgfmath@%
%
\edef\pgf@lib@marshal{%
\noexpand\pgfutil@in@{from center}{\pgf@lib@temp}%
}%
\pgf@lib@marshal%
\ifpgfutil@in@%
\else%
\ifdim#1>0pt\relax%
\advance#1#2\relax%
\fi%
\fi%
\fi}
\def\pgf@lib@arrowbox@parsearrows#1{%
\pgfkeys{/pgf/.cd,%
arrow box west arrow=0pt,
arrow box east arrow=0pt,
arrow box south arrow=0pt,
arrow box north arrow=0pt
}%
\def\pgf@lib@arrowbox@extend{0pt}%
\edef\pgf@lib@temp{#1}%
\expandafter\pgf@lib@arrowbox@@parsearrows\pgf@lib@temp,\pgf@lib@arrowbox@parsearrows,}
\def\pgf@lib@arrowbox@@parsearrows#1,{%
\ifx\pgf@lib@arrowbox@parsearrows#1%
\let\pgflib@next\relax%
\else%
\pgfutil@in@:{#1}%
\ifpgfutil@in@%
\pgf@lib@arrowbox@getextend#1\pgf@lib%
\else%
\def\pgf@lib@arrowbox@direction{#1}%
\fi%
\edef\pgf@marshal{%
\noexpand\pgfkeys{/pgf/arrow box \pgf@lib@arrowbox@direction\space arrow=\pgf@lib@arrowbox@extend}%
}%
\pgf@marshal%
\let\pgflib@next\pgf@lib@arrowbox@@@parsearrows%
\fi%
\pgflib@next%
}
\def\pgf@lib@arrowbox@@@parsearrows{%
\pgfutil@ifnextchar x{\relax\pgf@lib@arrowbox@@parsearrows}{\relax\pgf@lib@arrowbox@@parsearrows}%
}
\def\pgf@lib@arrowbox@getextend#1:#2\pgf@lib{%
\def\pgf@lib@arrowbox@direction{#1}%
\def\pgf@lib@arrowbox@extend{#2}%
}%
%
% /pgf/arrow box north arrow
% /pgf/arrow box south arrow
% /pgf/arrow box west arrow
% /pgf/arrow box east arrow
% /pgf/arrow box arrows
% /pgf/arrow box shaft width
% /pgf/arrow box head extend
% /pgf/arrow box head indent
% /pgf/arrow box tip angle
%
\pgfkeys{/pgf/.cd,
arrow box west arrow/.initial=.5cm,
arrow box east arrow/.initial=.5cm,
arrow box south arrow/.initial=.5cm,
arrow box north arrow/.initial=.5cm,
arrow box shaft width/.initial=.125cm,
arrow box head extend/.initial=.125cm,
arrow box head indent/.initial=0cm,
arrow box tip angle/.initial=90,
}
%
% arrow box/Shape.
%
\pgfdeclareshape{arrow box}{%
\saveddimen\shaftwidth{%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/arrow box shaft width}}%
}%
%
% Calculate far the arrows extend from the center of the node.
%
\savedmacro\arrowboxpoints{%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/inner xsep}}%
\advance\pgf@x.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@xa{\pgfkeysvalueof{/pgf/minimum width}}%
\ifdim\pgf@x<.5\pgf@xa%
\pgf@x.5\pgf@xa%
\fi%
\pgfmathaddtolength\pgf@x{\pgfkeysvalueof{/pgf/outer xsep}}%
%
\pgfmathsetlength\pgf@y{\pgfkeysvalueof{/pgf/inner ysep}}%
\advance\pgf@y.5\ht\pgfnodeparttextbox%
\advance\pgf@y.5\dp\pgfnodeparttextbox%
\pgfmathsetlength\pgf@ya{\pgfkeysvalueof{/pgf/minimum height}}%
\ifdim\pgf@y<.5\pgf@ya%
\pgf@y.5\pgf@ya%
\fi%
\pgfmathaddtolength\pgf@y{\pgfkeysvalueof{/pgf/outer ysep}}%
%
\edef\halfboxwidth{\the\pgf@x}%
\edef\halfboxheight{\the\pgf@y}%
\pgfextract@process\arrowboxcorner{}%
\addtosavedmacro\arrowboxcorner%
%
\pgf@lib@arrowbox@parsearrowlength\pgf@x{\halfboxwidth}%
{\pgfkeysvalueof{/pgf/arrow box west arrow}}%
\edef\westextend{\the\pgf@x}%
\addtosavedmacro\westextend%
%
\pgf@lib@arrowbox@parsearrowlength\pgf@x{\halfboxwidth}%
{\pgfkeysvalueof{/pgf/arrow box east arrow}}%
\edef\eastextend{\the\pgf@x}%
\addtosavedmacro\eastextend%
%
\pgf@lib@arrowbox@parsearrowlength\pgf@x{\halfboxheight}%
{\pgfkeysvalueof{/pgf/arrow box north arrow}}%
\edef\northextend{\the\pgf@x}%
\addtosavedmacro\northextend%
%
\pgf@lib@arrowbox@parsearrowlength\pgf@x{\halfboxheight}%
{\pgfkeysvalueof{/pgf/arrow box south arrow}}%
\edef\southextend{\the\pgf@x}%
\addtosavedmacro\southextend%
}%
\saveddimen\arrowheadextend{%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/arrow box head extend}}%
}%
\saveddimen\arrowheadindent{%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/arrow box head indent}}%
}%
%
% Calculate the `miter' angle for the outer sep at the arrow tip.
%
\savedmacro\arrowtipmiterangle{%
\pgfmathparse{\pgfkeysvalueof{/pgf/arrow box tip angle}}%
\pgfmathdivide@{\pgfmathresult}{2}%
\let\arrowtipmiterangle\pgfmathresult%
}%
%
% Calculate the `miter' angle for the outer sep at the point just
% before the arrow tip.
%
\savedmacro\arrowheadangles{%
%
% Calculate the `miter' angle and its cosecant at the arrow tip...
%
\pgfmathparse{\pgfkeysvalueof{/pgf/arrow box tip angle}}%
\pgfmathdivide@{\pgfmathresult}{2}%
\let\arrowtipmiterangle\pgfmathresult%
\addtosavedmacro\arrowtipmiterangle%
\pgfmathcosec@{\arrowtipmiterangle}%
\let\cosecarrowtipmiterangle\pgfmathresult%
\addtosavedmacro\cosecarrowtipmiterangle%
%
% ...before the arrow head...
%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/arrow box head extend}}%
\pgfmathsetlength\pgf@y{\pgfkeysvalueof{/pgf/arrow box head indent}}%
\ifdim\pgf@y=0pt\relax%
\def\pgfmathresult{90}%
\else%
\ifdim\pgf@y<0pt\relax%
\pgfmathdivide@{\pgfmath@tonumber{\pgf@x}}{\pgfmath@tonumber{\pgf@y}}%
\pgfmathatan@{\pgfmathresult}%
\pgfmathadd@{\pgfmathresult}{180}%
\else%
\pgfmathdivide@{\pgfmath@tonumber{\pgf@x}}{\pgfmath@tonumber{\pgf@y}}%
\pgfmathatan@{\pgfmathresult}%
\fi%
\fi%
\pgfmathdivide@{\pgfmathresult}{2}%
\let\beforearrowheadmiterangle\pgfmathresult%
\addtosavedmacro\beforearrowheadmiterangle%
\pgfmathcosec@{\beforearrowheadmiterangle}%
\let\cosecbeforearrowheadmiterangle\pgfmathresult%
\addtosavedmacro\cosecbeforearrowheadmiterangle%
%
% ...and before the arrow tip.
%
\pgfutil@tempdima-\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima90pt\relax%
\pgfutil@tempdimb\beforearrowheadmiterangle pt\relax%
\pgfutil@tempdimb2.0\pgfutil@tempdimb%
\advance\pgfutil@tempdimb-90pt\relax%
\advance\pgfutil@tempdima\pgfutil@tempdimb%
\divide\pgfutil@tempdima2\relax%
\edef\beforearrowtipmiterangle{\pgfmath@tonumber{\pgfutil@tempdima}}%
\addtosavedmacro\beforearrowtipmiterangle%
\pgfmathcosec@{\beforearrowtipmiterangle}%
\let\cosecbeforearrowtipmiterangle\pgfmathresult%
\addtosavedmacro\cosecbeforearrowtipmiterangle%
}
\saveddimen\outerxsep{%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/outer xsep}}%
}%
\saveddimen\outerysep{%
\pgfmathsetlength\pgf@x{\pgfkeysvalueof{/pgf/outer ysep}}%
}%
%
% Calculate the (path) point immediately prior to an arrow tip.
%
\savedanchor\beforearrowtip{%
\pgfmathparse{\pgfkeysvalueof{/pgf/arrow box tip angle}}%
\pgfmathdivide@{\pgfmathresult}{2}%
\pgfmathcot@{\pgfmathresult}%
\let\cothalfangle\pgfmathresult%
\pgfmathsetlength\pgf@y{\pgfkeysvalueof{/pgf/arrow box shaft width}}%
\pgf@y.5\pgf@y%
\pgfmathaddtolength\pgf@y{\pgfkeysvalueof{/pgf/arrow box head extend}}%
\pgf@y\pgf@y%
\pgf@x\cothalfangle\pgf@y%
}%
\savedanchor\centerpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y.5\ht\pgfnodeparttextbox%
\advance\pgf@y-.5\dp\pgfnodeparttextbox%
}%
\savedanchor\basepoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgf@y0pt\relax%
}%
\savedanchor\midpoint{%
\pgf@x.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@y{+.5ex}%
}%
\anchor{center}{\centerpoint}
\anchor{mid}{\midpoint}
\anchor{mid east}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\let\pgf@lib@shapes@arrowbox@referencepoint\midpoint%
\csname pgf@anchor@arrow box@border\endcsname{\pgfqpoint{\eastextend}{0pt}};
\else%
\arrowboxcorner%
\pgf@xa\pgf@x%
\midpoint%
\advance\pgf@x\pgf@xa%
\fi%
}
\anchor{mid west}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\let\pgf@lib@shapes@arrowbox@referencepoint\midpoint%
\csname pgf@anchor@arrow box@border\endcsname{\pgfqpoint{-\westextend}{0pt}};
\else%
\arrowboxcorner%
\pgf@xa\pgf@x%
\midpoint%
\advance\pgf@x-\pgf@xa%
\fi%
}
\anchor{base}{\basepoint}
\anchor{base east}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\let\pgf@lib@shapes@arrowbox@referencepoint\basepoint%
\csname pgf@anchor@arrow box@border\endcsname{\pgfqpoint{\eastextend}{0pt}};
\else%
\arrowboxcorner%
\pgf@xa\pgf@x%
\basepoint%
\advance\pgf@x\pgf@xa%
\fi%
}
\anchor{base west}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\let\pgf@lib@shapes@arrowbox@referencepoint\basepoint%
\csname pgf@anchor@arrow box@border\endcsname{\pgfqpoint{-\westextend}{0pt}};
\else%
\arrowboxcorner%
\pgf@xa\pgf@x%
\basepoint%
\advance\pgf@x-\pgf@xa%
\fi%
}
\anchor{north}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\csname pgf@anchor@arrow box@north arrow tip\endcsname%
\else%
\pgfpointadd{\centerpoint}{\arrowboxcorner}%
\pgf@ya\pgf@y%
\centerpoint%
\pgf@y\pgf@ya%
\fi%
}%
\anchor{south}{%
\arrowboxpoints%
\ifdim\southextend>0pt\relax%
\csname pgf@anchor@arrow box@south arrow tip\endcsname%
\else%
\pgfpointadd{\centerpoint}{\arrowboxcorner\pgf@y-\pgf@y}%
\pgf@ya\pgf@y%
\centerpoint%
\pgf@y\pgf@ya%
\fi%
}%
\anchor{east}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\csname pgf@anchor@arrow box@east arrow tip\endcsname%
\else%
\pgfpointadd{\centerpoint}{\arrowboxcorner}%
\pgf@xa\pgf@x%
\centerpoint%
\pgf@x\pgf@xa%
\fi%
}%
\anchor{west}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\csname pgf@anchor@arrow box@west arrow tip\endcsname%
\else%
\pgfpointadd{\centerpoint}{\arrowboxcorner\pgf@x-\pgf@x}%
\pgf@xa\pgf@x%
\centerpoint%
\pgf@x\pgf@xa%
\fi%
}%
\anchor{north east}{%
\arrowboxpoints%
\pgfpointadd{\centerpoint}{\arrowboxcorner}%
}%
\anchor{north west}{%
\arrowboxpoints%
\pgfpointadd{\centerpoint}{\arrowboxcorner\pgf@x-\pgf@x}%
}%
\anchor{south west}{%
\arrowboxpoints%
\pgfpointadd{\centerpoint}{\arrowboxcorner\pgf@x-\pgf@x\pgf@y-\pgf@y}%
}%
\anchor{south east}{%
\arrowboxpoints%
\pgfpointadd{\centerpoint}{\arrowboxcorner\pgf@y-\pgf@y}%
}%
\anchor{before east arrow}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
\advance\pgf@y\outerysep\relax%
}%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}%
\anchor{before east arrow head}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
\advance\pgf@x\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
}%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}
\anchor{before east arrow tip}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
}%
}%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}
\anchor{east arrow tip}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\centerpoint%
\advance\pgf@x\eastextend\relax%
\pgf@xa\outerxsep\relax%
\pgfmathcosec@{\arrowtipmiterangle}%
\advance\pgf@x\pgfmathresult\pgf@xa%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}
\anchor{after east arrow tip}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
}%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}
\anchor{after east arrow head}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
\advance\pgf@x\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}
\anchor{after east arrow}{%
\arrowboxpoints%
\ifdim\eastextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
\advance\pgf@y\outerysep\relax%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}%
%
\anchor{before west arrow}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@x-\pgf@x%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
\advance\pgf@y\outerysep\relax%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@west\endcsname%
\fi%
}%
\anchor{before west arrow head}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\westextend\relax%
\advance\pgf@x\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@west\endcsname%
\fi%
}
\anchor{before west arrow tip}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\westextend\relax%
}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@west\endcsname%
\fi%
}
\anchor{west arrow tip}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\centerpoint%
\advance\pgf@x-\westextend\relax%
\pgf@xa\outerxsep\relax%
\pgfmathcosec@{\arrowtipmiterangle}%
\advance\pgf@x-\pgfmathresult\pgf@xa%
\else%
\csname pgf@anchor@arrow box@west\endcsname%
\fi%
}
\anchor{after west arrow tip}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\westextend\relax%
}%
\pgf@x-\pgf@x%
}%
\else%
\csname pgf@anchor@arrow box@west\endcsname%
\fi%
}
\anchor{after west arrow head}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima180pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\westextend\relax%
\advance\pgf@x\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
\pgf@x-\pgf@x%
}%
\else%
\csname pgf@anchor@arrow box@west\endcsname%
\fi%
}
\anchor{after west arrow}{%
\arrowboxpoints%
\ifdim\westextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
\advance\pgf@y\outerysep\relax%
\pgf@x-\pgf@x%
}%
\else%
\csname pgf@anchor@arrow box@west\endcsname%
\fi%
}%
%
\anchor{before north arrow}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@x-\shaftwidth\relax%
\pgf@x.5\pgf@x%
\advance\pgf@x-\outerxsep\relax%
}%
\else%
\csname pgf@anchor@arrow box@north\endcsname%
\fi%
}
\anchor{before north arrow head}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima270pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\advance\pgf@y\arrowheadindent\relax%
\pgf@x-\shaftwidth\relax%
\pgf@x.5\pgf@x%
}%
}%
\else%
\csname pgf@anchor@arrow box@north\endcsname%
\fi%
}
\anchor{before north arrow tip}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-90pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@xa\pgf@x%
\pgf@x\pgf@y%
\pgf@y-\pgf@xa%
\advance\pgf@y\northextend\relax%
}%
\pgf@x-\pgf@x%
}%
\else%
\csname pgf@anchor@arrow box@north\endcsname%
\fi%
}
\anchor{north arrow tip}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\centerpoint%
\advance\pgf@y\northextend\relax%
\pgf@ya\outerysep\relax%
\pgfmathcosec@{\arrowtipmiterangle}%
\advance\pgf@y\pgfmathresult\pgf@ya%
\else%
\csname pgf@anchor@arrow box@north\endcsname%
\fi%
}
\anchor{after north arrow tip}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-90pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@xa\pgf@x%
\pgf@x\pgf@y%
\pgf@y-\pgf@xa%
\advance\pgf@y\northextend\relax%
}%
}%
\else%
\csname pgf@anchor@arrow box@north\endcsname%
\fi%
}
\anchor{after north arrow head}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima270pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\advance\pgf@y\arrowheadindent\relax%
\pgf@x-\shaftwidth\relax%
\pgf@x.5\pgf@x%
}%
\pgf@x-\pgf@x%
}%
\else%
\csname pgf@anchor@arrow box@north\endcsname%
\fi%
}
\anchor{after north arrow}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@x\shaftwidth\relax%
\pgf@x.5\pgf@x%
\advance\pgf@x\outerxsep\relax%
}%
\else%
\csname pgf@anchor@arrow box@north\endcsname%
\fi%
}
%
\anchor{before south arrow}{%
\arrowboxpoints%
\ifdim\southextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@x\shaftwidth\relax%
\pgf@x.5\pgf@x%
\advance\pgf@x\outerxsep\relax%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@south\endcsname%
\fi%
}%
\anchor{before south arrow head}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima270pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\advance\pgf@y\arrowheadindent\relax%
\pgf@x-\shaftwidth\relax%
\pgf@x.5\pgf@x%
}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@south\endcsname%
\fi%
}
\anchor{before south arrow tip}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-90pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@xa\pgf@x%
\pgf@x\pgf@y%
\pgf@y-\pgf@xa%
\advance\pgf@y\northextend\relax%
}%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@south\endcsname%
\fi%
}
\anchor{south arrow tip}{%
\arrowboxpoints%
\ifdim\southextend>0pt\relax%
\centerpoint%
\advance\pgf@y-\southextend\relax%
\pgf@ya\outerysep\relax%
\pgfmathcosec@{\arrowtipmiterangle}%
\advance\pgf@y-\pgfmathresult\pgf@ya%
\else%
\csname pgf@anchor@arrow box@east\endcsname%
\fi%
}
\anchor{after south arrow tip}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima\arrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima\beforearrowtipmiterangle pt\relax%
\advance\pgfutil@tempdima-90pt\relax%
\pgfutil@tempdimb\outerxsep\relax%
\pgfutil@tempdimb\cosecbeforearrowtipmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@xa\pgf@x%
\pgf@x\pgf@y%
\pgf@y-\pgf@xa%
\advance\pgf@y\northextend\relax%
}%
\pgf@x-\pgf@x%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@south\endcsname%
\fi%
}
\anchor{after south arrow head}{%
\arrowboxpoints%
\ifdim\northextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\pgfpointadd{%
\arrowheadangles%
\pgfutil@tempdima-\beforearrowheadmiterangle pt\relax%
\advance\pgfutil@tempdima270pt\relax%
\pgfutil@tempdimb\outerysep\relax%
\pgfutil@tempdimb\cosecbeforearrowheadmiterangle\pgfutil@tempdimb%
\pgfqpointpolar{\pgfmath@tonumber{\pgfutil@tempdima}}{\the\pgfutil@tempdimb}%
}%
{%
\beforearrowtip%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\advance\pgf@y\arrowheadindent\relax%
\pgf@x-\shaftwidth\relax%
\pgf@x.5\pgf@x%
}%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@south\endcsname%
\fi%
}
\anchor{after south arrow}{%
\arrowboxpoints%
\ifdim\southextend>0pt\relax%
\pgfpointadd{\centerpoint}{%
\arrowboxcorner%
\pgf@x-\shaftwidth\relax%
\pgf@x.5\pgf@x%
\advance\pgf@x-\outerxsep\relax%
\pgf@y-\pgf@y%
}%
\else%
\csname pgf@anchor@arrow box@south\endcsname%
\fi%
}%
%
\backgroundpath{%
\arrowboxpoints%
\pgfextract@process\arrowboxcorner{%
\arrowboxcorner%
\pgfmathaddtolength\pgf@x{-\pgfkeysvalueof{/pgf/outer xsep}}%
\pgfmathaddtolength\pgf@y{-\pgfkeysvalueof{/pgf/outer ysep}}%
}%
{%
\pgftransformshift{\centerpoint}%
\pgfpathmoveto{\arrowboxcorner}%
\ifdim\eastextend>0pt\relax%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
\advance\pgf@x\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
}%
\pgfpathlineto{%
\pgf@x\eastextend\relax%
\pgf@y0pt\relax%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
\pgf@y-\pgf@y%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@x-\pgf@x%
\advance\pgf@x\eastextend\relax%
\advance\pgf@x\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y-.5\pgf@y%
}%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@y\shaftwidth\relax%
\pgf@y-.5\pgf@y%
}%
\fi%
\pgfpathlineto{\arrowboxcorner\pgf@y-\pgf@y}%
\ifdim\southextend>0pt\relax%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@x\shaftwidth\relax%
\pgf@x.5\pgf@x%
\pgf@y-\pgf@y%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@y\pgf@x%
\advance\pgf@y-\southextend\relax%
\advance\pgf@y-\arrowheadindent\relax%
\pgf@x\shaftwidth\relax%
\pgf@x.5\pgf@x%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@xa\pgf@y%
\pgf@y\pgf@x%
\advance\pgf@y-\southextend\relax%
\pgf@x\pgf@xa%
}%
\pgfpathlineto{%
\pgf@x0pt\relax%
\pgf@y-\southextend\relax%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@xa\pgf@y%
\pgf@y\pgf@x%
\advance\pgf@y-\southextend\relax%
\pgf@x-\pgf@xa%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@y\pgf@x%
\advance\pgf@y-\southextend\relax%
\advance\pgf@y-\arrowheadindent\relax%
\pgf@x\shaftwidth\relax%
\pgf@x-.5\pgf@x%
}%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@x\shaftwidth\relax%
\pgf@x-.5\pgf@x%
\pgf@y-\pgf@y%
}%
\fi%
\pgfpathlineto{\arrowboxcorner\pgf@x-\pgf@x\pgf@y-\pgf@y}%
\ifdim\westextend>0pt\relax%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@x-\pgf@x
\pgf@y\shaftwidth\relax%
\pgf@y-.5\pgf@y%
}%
\pgfpathlineto{%
\beforearrowtip%
\advance\pgf@x-\westextend\relax%
\advance\pgf@x-\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y-.5\pgf@y%
}%
\pgfpathlineto{%
\beforearrowtip%
\advance\pgf@x-\westextend\relax%
\pgf@y-\pgf@y%
}%
\pgfpathlineto{%
\pgf@x-\westextend\relax%
\pgf@y0pt\relax%
}%
\pgfpathlineto{%
\beforearrowtip%
\advance\pgf@x-\westextend\relax%
}%
\pgfpathlineto{%
\beforearrowtip%
\advance\pgf@x-\westextend\relax%
\advance\pgf@x-\arrowheadindent\relax%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@x-\pgf@x%
\pgf@y\shaftwidth\relax%
\pgf@y.5\pgf@y%
}%
\fi%
\pgfpathlineto{\arrowboxcorner\pgf@x-\pgf@x}%
\ifdim\northextend>0pt\relax%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@x\shaftwidth\relax%
\pgf@x-.5\pgf@x%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\advance\pgf@y\arrowheadindent\relax%
\pgf@x\shaftwidth\relax%
\pgf@x-.5\pgf@x%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@xa\pgf@y%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\pgf@x-\pgf@xa%
}%
\pgfpathlineto{%
\pgf@x0pt\relax%
\pgf@y\northextend\relax%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@xa\pgf@y%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\pgf@x\pgf@xa%
}%
\pgfpathlineto{%
\beforearrowtip%
\pgf@y-\pgf@x%
\advance\pgf@y\northextend\relax%
\advance\pgf@y\arrowheadindent\relax%
\pgf@x\shaftwidth\relax%
\pgf@x.5\pgf@x%
}%
\pgfpathlineto{%
\arrowboxcorner%
\pgf@x\shaftwidth\relax%
\pgf@x.5\pgf@x%
}%
\fi%
\pgfpathclose%
}%
}
\anchorborder{%
\pgfextract@process\externalpoint{}%
\pgfutil@ifundefined{pgf@lib@shapes@arrowbox@referencepoint}%
{\let\referencepoint\centerpoint}{\let\referencepoint\pgf@lib@shapes@arrowbox@referencepoint}%
\pgfextract@process\externalpoint{%
\pgfpointadd{\referencepoint}{\externalpoint}%
}%
\pgfmathanglebetweenpoints{\centerpoint}{\externalpoint}%
\let\externalangle\pgfmathresult%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@west\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@north\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@north east\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before east arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{east arrow tip}%
\def\secondpoint{before east arrow tip}%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before east arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{before east arrow head}%
\def\secondpoint{before east arrow}%
\else%
\def\firstpoint{before east arrow}%
\def\secondpoint{north east}%
\fi%
\fi%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after north arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after north arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{north east}%
\def\secondpoint{after north arrow}%
\else%
\def\firstpoint{after north arrow}%
\def\secondpoint{after north arrow head}%
\fi%
\else%
\def\firstpoint{after north arrow tip}%
\def\secondpoint{north arrow tip}%
\fi%
\fi%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@north west\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before north arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{north arrow tip}%
\def\secondpoint{before north arrow tip}%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before north arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{before north head}%
\def\secondpoint{before north arrow}%
\else%
\def\firstpoint{before north arrow}%
\def\secondpoint{north west}%
\fi%
\fi%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after west arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after west arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{north west}%
\def\secondpoint{after west arrow}%
\else%
\def\firstpoint{after west arrow}%
\def\secondpoint{after west arrow head}%
\fi%
\else%
\def\firstpoint{after west arrow tip}%
\def\secondpoint{west arrow tip}%
\fi%
\fi%
\fi%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@south arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@south west\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before west arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{west arrow tip}%
\def\secondpoint{before west arrow tip}%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before west arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{before west arrow head}%
\def\secondpoint{before west arrow}%
\else%
\def\firstpoint{before west arrow}%
\def\secondpoint{south west}%
\fi%
\fi%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after south arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after south arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{south west}%
\def\secondpoint{after south arrow}%
\else%
\def\firstpoint{after south arrow}%
\def\secondpoint{after south arrow head}%
\fi%
\else%
\def\firstpoint{after south arrow tip}%
\def\secondpoint{south arrow tip}%
\fi%
\fi%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@south east\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before south arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{south arrow tip}%
\def\secondpoint{before south arrow tip}%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@before south arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{before south arrow head}%
\def\secondpoint{before south arrow}%
\else%
\def\firstpoint{before south arrow}%
\def\secondpoint{south east}%
\fi%
\fi%
\else%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after east arrow tip\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\pgfmathanglebetweenpoints{\referencepoint}%
{\csname pgf@anchor@arrow box@after east arrow\endcsname}%
\ifdim\externalangle pt<\pgfmathresult pt\relax%
\def\firstpoint{south east}%
\def\secondpoint{after east arrow}%
\else%
\def\firstpoint{after east arrow}%
\def\secondpoint{after east arrow head}%
\fi%
\else%
\def\firstpoint{after east arrow tip}%
\def\secondpoint{east arrow tip}%
\fi%
\fi%
\fi%
\fi%
\pgfpointintersectionoflines{\referencepoint}{\externalpoint}%
{\csname pgf@anchor@arrow box@\firstpoint\endcsname}%
{\csname pgf@anchor@arrow box@\secondpoint\endcsname}%
}
}
\endinput