% cd-mech.sty
% from http://www.taylorgruppe.de/circdia/
% File created by Stefan Krause -- version 1.3.
% Supports mechanical symbols for circdia.sty.
% Wires coming out of or going into the paper
\newcommand{\wiredot}[2]{
 \draw (#1, #2) circle (0.915);
 \junct{#1}{#2}
}
\newcommand{\wirecross}[2]{
 \draw (#1, #2) circle (0.915);
 \draw [shift = {(#1, #2)}] (-0.642, -0.642) -- (0.642, 0.642) (-0.642, 0.642) -- (0.642, -0.642);
}
% Technical dimensioning
\newcommand{\techdim}[6][]{
 \prepareelement{M}{}{#5}{}{#6}
 \renewcommand{\cdinfo}{#4}
 \begin{scope}[shift = {(#2, #3)}]
  \expandafter\csname techdim\cdorient\endcsname{#1}
  \drawrefval
 \end{scope}
}
\newcommand{\techdimH}[1]{
 \setstandardtextpos{u}
 \renewcommand{\cdrefvaltog}{0}
 \ifthenelse{\equal{\cdtextpos}{c}}{
  \edef\cdvaluex{\cdinfo/2}\edef\cdvaluey{0}\renewcommand{\cdvaluealign}{c}
 }{}
 \ifthenelse{\equal{\cdtextpos}{d}}{
  \edef\cdvaluex{\cdinfo/2}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{c}
 }{}
 \ifthenelse{\equal{\cdtextpos}{l}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{-2.75}\edef\cdvaluey{0}\renewcommand{\cdvaluealign}{r}
  }{
   \edef\cdvaluex{-0.75}\edef\cdvaluey{0}\renewcommand{\cdvaluealign}{r}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{ld}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{-2}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{r}
  }{
   \edef\cdvaluex{-0.75}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{r}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{lu}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{-2}\edef\cdvaluey{1.25}\renewcommand{\cdvaluealign}{r}
  }{
   \edef\cdvaluex{-0.75}\edef\cdvaluey{1.25}\renewcommand{\cdvaluealign}{r}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{r}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{\cdinfo+2.75}\edef\cdvaluey{0}\renewcommand{\cdvaluealign}{l}
  }{
   \edef\cdvaluex{\cdinfo+0.75}\edef\cdvaluey{0}\renewcommand{\cdvaluealign}{l}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{rd}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{\cdinfo+2}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{l}
  }{
   \edef\cdvaluex{\cdinfo+0.75}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{l}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{ru}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{\cdinfo+2}\edef\cdvaluey{1.25}\renewcommand{\cdvaluealign}{l}
  }{
   \edef\cdvaluex{\cdinfo+0.75}\edef\cdvaluey{1.25}\renewcommand{\cdvaluealign}{l}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{u}}{
  \edef\cdvaluex{\cdinfo/2}\edef\cdvaluey{1.25}\renewcommand{\cdvaluealign}{c}
 }{}
 #1
 \ifthenelse{\equal{\cdsuborient}{O}}{
  \cdbigarrow[2]{0}{0}{0}
  \cdbigarrow[2]{\cdinfo}{0}{180}
 }{
  \ifthenelse{\equal{\cdtextpos}{c}}{
   %%% TO DO!
   \draw (1, 0) -- (\cdinfo/2-1, 0);
   \draw (\cdinfo/2+1, 0) -- (\cdinfo-1, 0);
  }{
   \draw (1, 0) -- (\cdinfo-1, 0);
  }
  \cdbigarrow{0}{0}{180}
  \cdbigarrow{\cdinfo}{0}{0}
 }
}
\newcommand{\techdimV}[1]{
 \setstandardtextpos{l}
 \renewcommand{\cdrefvaltog}{0}
 \ifthenelse{\equal{\cdtextpos}{c}}{
  \edef\cdvaluex{0}\edef\cdvaluey{\cdinfo/2}\renewcommand{\cdvaluealign}{c}
 }{}
 \ifthenelse{\equal{\cdtextpos}{d}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{0}\edef\cdvaluey{-3.25}\renewcommand{\cdvaluealign}{c}
  }{
   \edef\cdvaluex{0}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{c}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{l}}{
  \edef\cdvaluex{-0.5}\edef\cdvaluey{\cdinfo/2}\renewcommand{\cdvaluealign}{r}
 }{}
 \ifthenelse{\equal{\cdtextpos}{ld}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{-0.5}\edef\cdvaluey{-2.5}\renewcommand{\cdvaluealign}{r}
  }{
   \edef\cdvaluex{-0.5}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{r}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{lu}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{-0.5}\edef\cdvaluey{\cdinfo+2.5}\renewcommand{\cdvaluealign}{r}
  }{
   \edef\cdvaluex{-0.5}\edef\cdvaluey{\cdinfo+1.25}\renewcommand{\cdvaluealign}{r}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{r}}{
  \edef\cdvaluex{0.5}\edef\cdvaluey{\cdinfo/2}\renewcommand{\cdvaluealign}{l}
 }{}
 \ifthenelse{\equal{\cdtextpos}{rd}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{0.5}\edef\cdvaluey{-2.5}\renewcommand{\cdvaluealign}{l}
  }{
   \edef\cdvaluex{0.5}\edef\cdvaluey{-1.25}\renewcommand{\cdvaluealign}{l}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{ru}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{0.5}\edef\cdvaluey{\cdinfo+2.5}\renewcommand{\cdvaluealign}{l}
  }{
   \edef\cdvaluex{0.5}\edef\cdvaluey{\cdinfo+1.25}\renewcommand{\cdvaluealign}{l}
  }
 }{}
 \ifthenelse{\equal{\cdtextpos}{u}}{
  \ifthenelse{\equal{\cdsuborient}{O}}{
   \edef\cdvaluex{0}\edef\cdvaluey{\cdinfo+3.25}\renewcommand{\cdvaluealign}{c}
  }{
   \edef\cdvaluex{0}\edef\cdvaluey{\cdinfo+1.25}\renewcommand{\cdvaluealign}{c}
  }
 }{}
 #1
 \ifthenelse{\equal{\cdsuborient}{O}}{
  \cdbigarrow[2]{0}{0}{90}
  \cdbigarrow[2]{0}{\cdinfo}{-90}
 }{
  \ifthenelse{\equal{\cdtextpos}{c}}{
   \draw (0, 1) -- (0, \cdinfo/2-1.25);
   \draw (0, \cdinfo/2+1.25) -- (0, \cdinfo-1);
  }{
   \draw (0, 1) -- (0, \cdinfo-1);
  }
  \cdbigarrow{0}{0}{-90}
  \cdbigarrow{0}{\cdinfo}{90}
 }
}
% Helper lines for dimensioning
\newcommand{\dimhelpL}[1]{
 \ifthenelse{\equal{#1}{}}{
  \draw (0, -0.75) -- (0, 0.75);
 }{\ifthenelse{#1>0}{
  \draw (0, -0.75) -- (0, #1);
 }{
  \draw (0, #1) -- (0, 0.75);
 }}
}
\newcommand{\dimhelpR}[1]{
 \ifthenelse{\equal{#1}{}}{
  \draw (\cdinfo, -0.75) -- (\cdinfo, 0.75);
 }{\ifthenelse{#1>0}{
  \draw (\cdinfo, -0.75) -- (\cdinfo, #1);
 }{
  \draw (\cdinfo, #1) -- (\cdinfo, 0.75);
 }}
}
\newcommand{\dimhelpU}[1]{
 \ifthenelse{\equal{#1}{}}{
  \draw (-0.75, \cdinfo) -- (0.75, \cdinfo);
 }{\ifthenelse{#1>0}{
  \draw (-0.75, \cdinfo) -- (#1, \cdinfo);
 }{
  \draw (#1, \cdinfo) -- (0.75, \cdinfo);
 }}
}
\newcommand{\dimhelpD}[1]{
 \ifthenelse{\equal{#1}{}}{
  \draw (-0.75, 0) -- (0.75, 0);
 }{\ifthenelse{#1>0}{
  \draw (-0.75, 0) -- (#1, 0);
 }{
  \draw (#1, 0) -- (0.75, 0);
 }}
}