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% Copyright 2018-2021 by Romano Giannetti
% Copyright 2015-2021 by Stefan Lindner
% Copyright 2013-2021 by Stefan Erhardt
% Copyright 2007-2021 by Massimo Redaelli
%
% 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 files gpl-3.0_license.txt and lppl-1-3c_license.txt for more details.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% flow handling
%% styles
\ctikzset{bipole flow style/.style={}}
\tikzset{bipole flow style/.code={
\ctikzset{bipole flow style/.style={#1}}
}}
\tikzset{bipole flow append style/.code={
\ctikzset{bipole flow style/.append style={#1}}
}}
%% Options
\ctikzset{f^>/.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = forward,
\circuitikzbasekey/bipole/flow/x position = after,
\circuitikzbasekey/bipole/flow/y position = above
}
}
\ctikzset{f_>/.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = forward,
\circuitikzbasekey/bipole/flow/x position = after,
\circuitikzbasekey/bipole/flow/y position = below
}
}
\ctikzset{f>^/.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = forward,
\circuitikzbasekey/bipole/flow/x position = before,
\circuitikzbasekey/bipole/flow/y position = above
}
}
\ctikzset{f>_/.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = forward,
\circuitikzbasekey/bipole/flow/x position = before,
\circuitikzbasekey/bipole/flow/y position = below
}
}
\ctikzset{f^</.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = backward,
\circuitikzbasekey/bipole/flow/x position = after,
\circuitikzbasekey/bipole/flow/y position = above
}
}
\ctikzset{f_</.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = backward,
\circuitikzbasekey/bipole/flow/x position = after,
\circuitikzbasekey/bipole/flow/y position = below
}
}
\ctikzset{f<^/.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = backward,
\circuitikzbasekey/bipole/flow/x position = before,
\circuitikzbasekey/bipole/flow/y position = above
}
}
\ctikzset{f<_/.style = {
f={#1},
\circuitikzbasekey/bipole/flow/direction = backward,
\circuitikzbasekey/bipole/flow/x position = before,
\circuitikzbasekey/bipole/flow/y position = below
}
}
\ctikzset{f</.style = { f={#1}, \circuitikzbasekey/bipole/flow/direction = backward} }
\ctikzset{f_/.style = { f={#1}, \circuitikzbasekey/bipole/flow/y position = below } }
\ctikzset{f>/.style = { f={#1}, \circuitikzbasekey/bipole/flow/direction = forward } }
\ctikzset{f^/.style = { f={#1}, \circuitikzbasekey/bipole/flow/y position = above } }
\ctikzset{f/.code = {
\pgfcirc@has@ftrue
\pgfkeys{\circuitikzbasekey/bipole/flow/direction = forward,
\circuitikzbasekey/bipole/flow/x position = after,
\circuitikzbasekey/bipole/flow/y position = above }
\pgfkeys{/tikz/circuitikz/bipole/flow/label/name={#1}}
\ctikzsetvalof{bipole/flow/label/unit}{}
\ifpgf@circ@siunitx
\pgf@circ@handleSI{#1}
\ifpgf@circ@siunitx@res
\edef\pgf@temp{\pgf@circ@handleSI@val}
\pgfkeyslet{/tikz/circuitikz/bipole/flow/label/name}{\pgf@temp}
\edef\pgf@temp{\pgf@circ@handleSI@unit}
\pgfkeyslet{/tikz/circuitikz/bipole/flow/label/unit}{\pgf@temp}
\else
\fi
\else
\fi
}
}
%% Output routine
\def\pgf@circ@drawflow{
\pgfextra{
\edef\pgf@circ@rounded@dir{\pgf@circ@direction}
\def\pgfcircmathresult{\expandafter\pgf@circ@stripdecimals\pgf@circ@rounded@dir\pgf@nil}
\ifnum\pgfcircmathresult >4 \ifnum\pgfcircmathresult <86
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{north west} \else \def\pgf@circ@dir{south east}
\fi
\fi\fi
\ifnum\pgfcircmathresult >85 \ifnum\pgfcircmathresult <95
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{west} \else \def\pgf@circ@dir{east}
\fi
\fi\fi
\ifnum\pgfcircmathresult >94 \ifnum\pgfcircmathresult <176
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{south west}\else \def\pgf@circ@dir{north east}
\fi
\fi\fi
\ifnum\pgfcircmathresult >175 \ifnum\pgfcircmathresult <185
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{south}\else\def\pgf@circ@dir{north}
\fi
\fi\fi
\ifnum\pgfcircmathresult >184 \ifnum\pgfcircmathresult <266
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{south east}\else\def\pgf@circ@dir{north west}
\fi
\fi\fi
\ifnum\pgfcircmathresult >265 \ifnum\pgfcircmathresult <275
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{east}\else \def\pgf@circ@dir{west}
\fi
\fi\fi
\ifnum\pgfcircmathresult >274 \ifnum\pgfcircmathresult <356
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{north east}\else\def\pgf@circ@dir{south west}
\fi
\fi\fi
\ifnum\pgfcircmathresult <5
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{north}\else\def\pgf@circ@dir{south}
\fi
\fi
\ifnum\pgfcircmathresult >355
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@dir{north}\else\def\pgf@circ@dir{south}
\fi
\fi
\ifpgf@circuit@bipole@flow@below
\def\pgf@circ@bipole@flow@label@where{-90}
\else
\def\pgf@circ@bipole@flow@label@where{+90}
\fi
% export anchor position (if not needed, is always the same macro)
\expandafter\xdef\csname pgfcirc@\pgfcirc@a@prefix-Flab-anchor\endcsname{\pgf@circ@dir}
}
\pgfextra{\def\pgf@temp{short}\edef\pgf@circ@temp{\ctikzvalof{bipole/kind}}}
\ifx\pgf@circ@temp\pgf@temp%draw current at a short at middle of the line
coordinate (pgfcirc@Ffrom@flat) at (\tikztostart)
coordinate (pgfcirc@Fto@flat) at (\tikztotarget)
\else% normal bipole or source
\ifpgf@circuit@bipole@flow@before
coordinate (pgfcirc@Ffrom@flat) at (\tikztostart)
coordinate (pgfcirc@Fto@flat) at (pgfcirc@anchorstartnode)
\else
coordinate (pgfcirc@Ffrom@flat) at (pgfcirc@anchorendnode)
coordinate (pgfcirc@Fto@flat) at (\tikztotarget)
\fi
\fi
\pgfextra{
\newdimen{\absfshift}
\def\flow@offset{\ctikzvalof{flow/offset}\pgf@circ@Rlen}
\absfshift=\flow@offset
\ifpgf@circuit@bipole@flow@backward
\pgfmathsubtract{\pgf@circ@rounded@dir}{180}
\edef\pgf@circ@rounded@dir{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
\fi
}
\ifpgf@circuit@bipole@flow@below
coordinate (pgfcirc@Ffrom@up) at ($(pgfcirc@Ffrom@flat) ! \absfshift !-90: (pgfcirc@Fto@flat)$)
coordinate (pgfcirc@Fto@up) at ($(pgfcirc@Fto@flat) ! \absfshift !90: (pgfcirc@Ffrom@flat)$)
\else
coordinate (pgfcirc@Ffrom@up) at ($(pgfcirc@Ffrom@flat) ! \absfshift !90: (pgfcirc@Fto@flat)$)
coordinate (pgfcirc@Fto@up) at ($(pgfcirc@Fto@flat) ! \absfshift !-90: (pgfcirc@Ffrom@flat)$)
\fi
coordinate (\pgfcirc@a@prefix-Fpos) at ($(pgfcirc@Ffrom@up) ! \ctikzvalof{flow/distance} !(pgfcirc@Fto@up)$)
\pgfextra{
\absfshift=0.25\pgf@circ@Rlen% This is half size of the "flowarrow" shape!
}
coordinate (\pgfcirc@a@prefix-Ffrom) at ($(\pgfcirc@a@prefix-Fpos)!\absfshift!(pgfcirc@Ffrom@up)$)
coordinate (\pgfcirc@a@prefix-Fto) at ($(\pgfcirc@a@prefix-Fpos)!\absfshift!(pgfcirc@Fto@up) $)
%
% coordinate (\pgfcirc@a@prefix-Fpos) at
% ([yshift=\flow@offset]$(\pgfcirc@a@prefix-Ffrom)! \ctikzvalof{flow/distance} !(\pgfcirc@a@prefix-Fto)$)
% if the flow label is not empty (in which case we have already all the anchors)
\pgf@circ@ifkeyempty{bipole/flow/label/name}\else
% the flow arrow is really a node "flowarrow", not a real arrow
node[flowarrow, rotate=\pgf@circ@rounded@dir, anchor=center](Farrowpos) at (\pgfcirc@a@prefix-Fpos) {}
node[anchor=\pgf@circ@dir, \circuitikzbasekey/bipole flow style]
(\ctikzvalof{bipole/name}flow) at (Farrowpos.\pgf@circ@bipole@flow@label@where) {\pgf@circ@finallabels{flow/label}}
\fi
% adjust from and to before exporting --- it's much more simple like this then rework the algorithm above
\ifpgf@circuit@bipole@flow@backward
\pgfcirc@swap@coordinates{\pgfcirc@a@prefix-Ffrom}{\pgfcirc@a@prefix-Fto}
\fi
}
\endinput
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