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\section{The axes in 3d}

The command \verb+\axesIIID[options](x1,y1,z1)(x2,y2,z2)+ draws the axes $Ox$,
$Oy$ and $Oz$ dashed from the origin $O$ to the coordinates
$(x_1,0,0)$ for the $x$-axis, $(0,y_1,0)$ for the $y$-axis and
$(0,0,z_1)$ for the $z$-axis and from there continues drawing the axes as lines to the points $(x_2,0,0)$, $(0,y_2,0)$ and $(0,0,z_2)$.

The options are the following:
\begin{itemize}
    \item all color options, line width as well as all possibilities of arrows.
    \item \verb+labelsep=value+ which allows to position the label in a self defined distance away from the extremity of the arrow of the axis, the default value is \verb+labelsep=5pt+---this is a real distance in three dimensions and not on screen.
    \item the choice of the labels on each of the axes with the option: \verb+axisnames={a,b,c}+, the default values are \verb+axisnames={x,y,z}+.
    \item the possibility to specify the style of the labels with the option: \verb+axisemph={\boldmath\Large\color{red}}+, by default there is no style predefined, which means, if no style is chosen one will get \verb+$x$,$y$,$z$+.
    \item \verb+showOrigin+ is a Boolean, \texttt{true} by default, if it is set to \verb+showOrigin=false+ the dashed lines aren't drawn to the origin anymore.
    \item \verb+mathLabel+ is a Boolean, \texttt{true} by default, in this case the math mode is activated, set to \verb+mathLabel=false+ the labels are set to the usual mode.
\end{itemize}
\encadre{The labels are placed at the extremities of the axes in their prolongation.}

\begin{LTXexample}[width=5cm]
\begin{pspicture}(-2,-2)(3,3)
\psset{viewpoint=100 30 20,Decran=100}
\psSolid[object=cube,a=2,
        action=draw*,
        fillcolor=magenta!20]
\axesIIID[showOrigin=false](1,1,1)(3,2,2.5)
\end{pspicture}
\end{LTXexample}

\begin{LTXexample}[width=5cm]
\begin{pspicture}(-2,-1)(3,4)
\psset{viewpoint=100 45 20,Decran=100}
\psSolid[object=cylindre,h=2,r=1,
        action=draw*,mode=4,
        fillcolor=green!20]
\axesIIID[linewidth=1pt,linecolor=red,arrowsize=5pt,
          arrowinset=0,axisnames={a,b,c},
          axisemph={\boldmath\Large\color{red}},
          labelsep=10pt]
         (1,1,2)(2,2,3)
\end{pspicture}
\end{LTXexample} 

\endinput