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	\section{\Index{Chamfering} a solid}

	\psset{lightsrc=10 0 10,viewpoint=50 -20 30 rtp2xyz,Decran=50}
	\begin{LTXexample}[width=6cm]
	\psset{unit=0.5}
	\begin{pspicture*}(-4,-4)(4,4)
	\psSolid[object=cube,
	a=5,
	fillcolor=red]
	\end{pspicture*}
	\end{LTXexample}


	\begin{LTXexample}[width=6cm]
	\psset{unit=0.5}
	\begin{pspicture*}(-4,-4)(4,4)
	\psSolid[object=cube,
	a=5,
	fillcolor=red,
	chanfrein,
	chanfreincoeff=.6]
	\end{pspicture*}
	\end{LTXexample}

	The option \Lkeyword{chanfrein} allows us to \Index{chamfer} a solid. This option
	uses the key \Lkeyword{chanfreincoeff} (value $0.8$ by default) which indicates the
	ratio $k$ with ($0<k<1$). This ratio is the one of a centre dilation with
	the centre in the middle of the chosen face.

	\psset{lightsrc=10 0 10,viewpoint=50 -20 30 rtp2xyz,Decran=30}
	\begin{LTXexample}[width=6cm]
	\psset{unit=0.5}
	\begin{pspicture*}(-4,-4)(4,4)
	\psSolid[object=dodecahedron,
	a=5,
	fillcolor=cyan]
	\end{pspicture*}
	\end{LTXexample}

	\psset{lightsrc=10 0 10,viewpoint=50 -20 30 rtp2xyz,Decran=30}
	\begin{LTXexample}[width=6cm]
	\psset{unit=0.5}
	\begin{pspicture*}(-4,-4)(4,4)
	\psSolid[object=dodecahedron,
	a=5,
	fillcolor=cyan,
	chanfrein,
	chanfreincoeff=.8]
	\end{pspicture*}
	\end{LTXexample}
	%\newpage

	\endinput