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% Copyright 2011 by Alain Matthes
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Public License.


\def\fileversion{1.16 c}
\def\filedate{2011/06/01}   

%<--------------------------------------------------------------------------–>  
%                   !!! idea from Y. Combe  !!! 
%<--------------------------------------------------------------------------–> 
%
%                \tkzProtractor  Protractor
%
% Rapporteur ajustable et positionable
%
% Par défaut: 
%                  centre en (0,0)
%                  rayon de 5 cm
%                  ligne de base horizontale.
%                  épaisseur de ligne 0.4 pt
%
% Paramètres (optionnels, gérés par xkeyval)
%             shift : coordonées (n'importe quelle forme 
%                                            acceptée par tikz).
%             scale : facteur d'échelle
%             rotate : rotation
%             lw : line width (épaisseur des lignes)
%                   ce paramètre subit le facteur d'échelle.
%<--------------------------------------------------------------------------–> 
\def\HalfProtractor{%
\tkzActivOff
  \draw [fill=black!50!blue!20!,even odd rule,semitransparent](-160:5cm) -- (-20:5cm) arc (-20:200:5cm) -- cycle %
    (-180:3.5cm) -- (0:3.5cm) arc (0:180:3.5cm) -- cycle;%

 \draw (-90:0.3cm) -- (0,0)
       (-135:0.3cm) -- (0,0)
       (-45:0.3cm) -- (0,0);
\foreach \MO@i in {0,1,...,180}
\pgfmathparse{ 4.8 * (mod(\MO@i ,5)==0)  + 4.9 * (mod(\MO@i ,5)>0) }
\draw (\MO@i:\pgfmathresult cm)--(\MO@i:5cm);

 \foreach \d in {0,1,...,180}   
  \pgfmathparse{3.7 * (mod(\d,5)==0)  + 3.6 * (mod(\d,5)>0)}
       \draw (\d:\pgfmathresult cm)--(\d:3.5cm);

\draw (0: 4.6cm)  node[font=\small] {0}
      (0: 4cm)  node[font=\small] {180};

\foreach \d in {10,20,...,80}
 \pgfmathtruncatemacro{\rang}{180 -  \d }
 \draw  (\d:3.9 cm) node[font=\tiny] {\rang}
        (\d:4.6 cm) node[font=\tiny] {\d};

\draw (90: 4.25cm) node[font=\small] {90};
\draw (90: 4.6 cm) -- (90:5cm)
      (90: 3.9 cm)   --  (90:3.5cm) ;

\foreach \d in {100,110,...,170}
 \pgfmathtruncatemacro{\rang}{180 -  \d }
 \draw (\d:3.9 cm) node[font=\tiny] {\rang}
       (\d:4.6 cm) node[font=\tiny] {\d};

 \draw (180: 4.5cm) node[font=\small] {180}
       (180: 3.9cm) node[font=\small] {0};
\tkzActivOn
}

\def\FullProtractor{%
\tkzActivOff
\draw[fill=black!50!yellow!20!,even odd rule,semitransparent]%
     (0,0) circle (4cm);
\draw (0,0) circle (3.3cm);\draw (0,0) circle (4cm);
\draw[fill=black] (0,0) circle (.08mm);
\node[draw, circle, inner sep=.2mm] (a) at (0,0) {};
\foreach \x in {0, 90, ..., 360}{%
    \draw[very thin, gray!40] (a) -- (\x:4cm);} 
\foreach \x in {0,...,359} {\draw (\x:3.8cm) -- (\x:4cm);}
\foreach \x in {0,5,...,355}  {\draw (\x:3.725cm) -- (\x:4cm);}   
\foreach \x in {0,10,...,350}{%
     \node[rotate=(\x-90)] at (\x:3.6cm) {\tiny\x};
} 
    \draw [>=stealth',->, thick,black] (0:2.5) arc(0:32:2.5);
    \draw [>=stealth',->, thick,black] (0:2) arc(0:32:2); 
    \draw [>=stealth',->, thick,black] (0:1.5) arc(0:32:1.5);
\tkzActivOn
}

\def\FullProtractorReturn{%
\tkzActivOff
\draw[fill=black!50!yellow!20!,even odd rule,semitransparent]%
     (0,0) circle (4cm);
\draw (0,0) circle (3.3cm);\draw (0,0) circle (4cm);
\draw[fill=black] (0,0) circle (.08mm);
\node[draw, circle, inner sep=.2mm] (a) at (0,0) {};
\foreach \x in {0, 90, ..., 360}{%
    \draw[very thin, gray!40] (a) -- (\x:4cm);} 
\foreach \x in {0,...,359} {\draw (\x:3.8cm) -- (\x:4cm);}
\foreach \x in {0,5,...,355}  {\draw (\x:3.725cm) -- (\x:4cm);}   
\begin{scope}
   \foreach \x in {0,10,...,350}{%
      \node[rotate=(-\x-90)] at (-\x:3.6cm) {\tiny\x};
} 
  \end{scope}
  \draw [>=stealth',->, thick,black] (0:2.5) arc(0:-32:2.5);
  \draw [>=stealth',->, thick,black] (0:2) arc(0:-32:2); 
  \draw [>=stealth',->, thick,black] (0:1.5) arc(0:-32:1.5); 
\tkzActivOn
} 
 
\newif\iftkz@RappReturn 
\newif\iftkz@RappFull
\pgfkeys{
  protractor/.cd,
  with/.is choice,
  with/full/.code = {\global\let\tkz@@Protractor\FullProtractor
                     \tkz@RappFulltrue},
  with/half/.code = {\global\let\tkz@@Protractor\HalfProtractor
                      \tkz@RappFullfalse},
  with/.default   = full,
  lw/.code        = {\def\cmdMO@Rap@lw{#1}},
  shift/.code     = {\def\cmdMO@Rap@shift{#1}},
  rotate/.code    = {\def\cmdMO@Rap@rotate{#1}},
  scale/.code     = {\def\cmdMO@Rap@scale{#1}},
  return/.is if   = tkz@RappReturn,
  return/.default = true
  }  
\def\tkzOriProtractor{\pgfutil@ifnextchar[{\tkz@OriProtractor}{%
                                         \tkz@OriProtractor[]}}   
\def\tkz@OriProtractor[#1]{
 \pgfkeys{/protractor/.cd,
 with=full,
 shift={(0,0)},
 rotate=0,
 lw=0.4pt,
 scale =1,
 return=false
 }  
 \pgfqkeys{/protractor}{#1}   
  \pgfmathsetlengthmacro{\MO@lw}{\cmdMO@Rap@lw * \cmdMO@Rap@scale}
  \begin{scope}[shift             = \cmdMO@Rap@shift,%
                scale             = \cmdMO@Rap@scale,%
                rotate            = \cmdMO@Rap@rotate,%
                every node/.style = {scale =\cmdMO@Rap@scale,
                                     rotate =\cmdMO@Rap@rotate},%
                line width=\MO@lw
                ]%
 \tkz@@Protractor
\end{scope}  
}
\def\tkzProtractor{\pgfutil@ifnextchar[{\tkz@Protractor}{\tkz@Protractor[]}}
\def\tkz@Protractor[#1](#2,#3){
 \pgfkeys{/protractor/.cd,
 with=full,
 shift={(0,0)},
 rotate=0,
 lw=0.4pt,
 scale =1,
 return=false
 }
\pgfqkeys{/protractor}{#1}
  \tkz@@extractxy{#2}
  \global\tkz@ax\pgf@x
  \global\tkz@ay\pgf@y
   \tkzFindSlopeAngle(#2,#3)\tkzGetAngle{cmdMO@Rap@rotate}%
\iftkz@RappFull
\iftkz@RappReturn
     \global\let\tkz@@Protractor\FullProtractorReturn
 \fi
  \pgfmathsetlengthmacro{\MO@lw}{\cmdMO@Rap@lw * \cmdMO@Rap@scale}
  \begin{scope}[shift             = {(\tkz@ax,\tkz@ay)},%
                scale             = \cmdMO@Rap@scale,%
                rotate            = \cmdMO@Rap@rotate,%
                every node/.style = {scale =\cmdMO@Rap@scale,
                                     rotate =\cmdMO@Rap@rotate},%
                line width=\MO@lw]%
  \tkz@@Protractor 
\end{scope}
\else
  \iftkz@RappReturn%
    \pgfmathsubtract{\cmdMO@Rap@rotate}{180}
    \let\cmdMO@Rap@rotate\pgfmathresult
  \fi 
\pgfmathsetlengthmacro{\MO@lw}{\cmdMO@Rap@lw * \cmdMO@Rap@scale}
  \begin{scope}[shift             = {(\tkz@ax,\tkz@ay)},%
                scale             = \cmdMO@Rap@scale,%
                rotate            = \cmdMO@Rap@rotate,%
                every node/.style = {scale =\cmdMO@Rap@scale,
                                     rotate =\cmdMO@Rap@rotate},%
                line width=\MO@lw]%
  \tkz@@Protractor 
\end{scope} 
\fi
}

%<--------------------------------------------------------------------------–>
% fin de \tkzProtractor
%<--------------------------------------------------------------------------–>
\endinput