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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/pgf/contrib/circuitikz/tex/pgfcirccurrent.tex
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+% Copyright 2007-2009 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.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Current handling
+
+%% Options
+\ctikzset{i^>/.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = forward,
+ \circuitikzbasekey/bipole/current/x position = after,
+ \circuitikzbasekey/bipole/current/y position = above
+ }
+}
+
+\ctikzset{i_>/.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = forward,
+ \circuitikzbasekey/bipole/current/x position = after,
+ \circuitikzbasekey/bipole/current/y position = below
+ }
+}
+
+\ctikzset{i>^/.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = forward,
+ \circuitikzbasekey/bipole/current/x position = before,
+ \circuitikzbasekey/bipole/current/y position = above
+ }
+}
+
+\ctikzset{i>_/.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = forward,
+ \circuitikzbasekey/bipole/current/x position = before,
+ \circuitikzbasekey/bipole/current/y position = below
+ }
+}
+
+\ctikzset{i^</.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = backward,
+ \circuitikzbasekey/bipole/current/x position = after,
+ \circuitikzbasekey/bipole/current/y position = above
+ }
+}
+
+\ctikzset{i_</.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = backward,
+ \circuitikzbasekey/bipole/current/x position = after,
+ \circuitikzbasekey/bipole/current/y position = below
+ }
+}
+
+\ctikzset{i<^/.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = backward,
+ \circuitikzbasekey/bipole/current/x position = before,
+ \circuitikzbasekey/bipole/current/y position = above
+ }
+}
+
+\ctikzset{i<_/.style = {
+ i = #1,
+ \circuitikzbasekey/bipole/current/direction = backward,
+ \circuitikzbasekey/bipole/current/x position = before,
+ \circuitikzbasekey/bipole/current/y position = below
+ }
+}
+
+\ctikzset{i/.code = {
+ \pgfkeys{\circuitikzbasekey/bipole/current/direction = forward,
+ \circuitikzbasekey/bipole/current/x position = after,
+ \circuitikzbasekey/bipole/current/y position = above }
+ \pgfkeys{/tikz/circuitikz/bipole/current/label/name=#1}
+ \ctikzsetvalof{bipole/current/label/unit}{}
+ \ifpgf@circ@siunitx
+ \pgf@circ@handleSI{#1}
+ \ifpgf@circ@siunitx@res
+ \edef\pgf@temp{\pgf@circ@handleSI@val}
+ \pgfkeyslet{/tikz/circuitikz/bipole/current/label/name}{\pgf@temp}
+ \edef\pgf@temp{\pgf@circ@handleSI@unit}
+ \pgfkeyslet{/tikz/circuitikz/bipole/current/label/unit}{\pgf@temp}
+ \else
+ \fi
+ \else
+ \fi
+ %reverse current direction for voltage sources
+ \ifpgf@circ@oldvoltagedirection\else
+ \ifpgf@circuit@bipole@isvoltage
+ \ifpgf@circuit@bipole@voltage@backward
+ \pgfkeys{\circuitikzbasekey/bipole/current/direction = forward,
+ \circuitikzbasekey/bipole/current/x position = after,
+ \circuitikzbasekey/bipole/current/y position = below }
+ \else
+ \pgfkeys{\circuitikzbasekey/bipole/current/direction = backward,
+ \circuitikzbasekey/bipole/current/x position = before,
+ \circuitikzbasekey/bipole/current/y position = above }
+ \fi\fi\fi
+ }
+}
+
+\ifpgf@circ@oldvoltagedirection
+ \ctikzset{i</.style = { i = #1, \circuitikzbasekey/bipole/current/direction = backward } }
+\else
+ \ctikzset{i</.style = { i = #1, \circuitikzbasekey/bipole/current/direction = backward, \circuitikzbasekey/bipole/current/x position = before } }
+\fi
+\ctikzset{i_/.style = { i = #1, \circuitikzbasekey/bipole/current/y position = below } }
+\ctikzset{i>/.style = {i = #1, \circuitikzbasekey/bipole/current/direction = forward } }
+\ctikzset{i^/.style = { i= #1, \circuitikzbasekey/bipole/current/y position = above } }
+
+%% Output routine
+\def\pgf@circ@drawcurrent{
+ \pgfextra{
+ \edef\pgf@circ@ffffff{\pgf@circ@direction}
+ \def\pgfcircmathresult{\expandafter\pgf@circ@stripdecimals\pgf@circ@ffffff\pgf@nil}
+
+ \ifnum\pgfcircmathresult >4 \ifnum\pgfcircmathresult <86
+ \ifpgf@circuit@bipole@current@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@current@below
+ \def\pgf@circ@dir{west} \else \def\pgf@circ@dir{east}
+ \fi
+ \fi\fi
+ \ifnum\pgfcircmathresult >94 \ifnum\pgfcircmathresult <176
+ \ifpgf@circuit@bipole@current@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@current@below
+ \def\pgf@circ@dir{south}\else\def\pgf@circ@dir{north}
+ \fi
+ \fi\fi
+ \ifnum\pgfcircmathresult >184 \ifnum\pgfcircmathresult <266
+ \ifpgf@circuit@bipole@current@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@current@below
+ \def\pgf@circ@dir{east}\else \def\pgf@circ@dir{west}
+ \fi
+ \fi\fi
+ \ifnum\pgfcircmathresult >274 \ifnum\pgfcircmathresult <356
+ \ifpgf@circuit@bipole@current@below
+ \def\pgf@circ@dir{north east}\else\def\pgf@circ@dir{south west}
+ \fi
+ \fi\fi
+ \ifnum\pgfcircmathresult <5
+ \ifpgf@circuit@bipole@current@below
+ \def\pgf@circ@dir{north}\else\def\pgf@circ@dir{south}
+ \fi
+ \fi
+ \ifnum\pgfcircmathresult >355
+ \ifpgf@circuit@bipole@current@below
+ \def\pgf@circ@dir{north}\else\def\pgf@circ@dir{south}
+ \fi
+ \fi
+
+ \ifpgf@circuit@bipole@current@below
+ \def\pgf@circ@bipole@current@label@where{-90}
+ \else
+ \def\pgf@circ@bipole@current@label@where{+90}
+ \fi
+ }
+
+ \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
+ (\tikztostart)--(\tikztotarget)
+ \else% normal bipole or source
+ \ifpgf@circuit@bipole@current@before
+ (\tikztostart)--(anchorstartnode)
+ \else
+ (anchorendnode)--(\tikztotarget)
+ \fi
+ \fi
+ \ifpgf@circuit@bipole@current@backward
+ \pgfextra{
+ \pgfmathsubtract{\pgf@circ@ffffff}{180}
+ \edef\pgf@circ@ffffff{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
+ }
+ \fi
+ coordinate[currarrow,pos=\ctikzvalof{current/distance},rotate=\pgf@circ@ffffff](Iarrow)
+ (Iarrow.\pgf@circ@bipole@current@label@where) node[anchor=\pgf@circ@dir]{\pgf@circ@finallabels{current/label}}
+}
+
+\endinput