1 \section{Truncate a solid's vertices}
3 The option \Lkeyword{trunc} allows us to \Index{truncate} a solid's vertices either
4 globally or individually. This option uses the key
5 \Lkeyword{trunccoeff} (value $0.25$ by default) which indicates the ratio
6 $k$ used for the \Index{truncation} ($0<k\leq 0.5$).
9 \item \texttt{\Lkeyword{trunc}=\Lkeyval{all}} truncates all the vertices;
10 \item \texttt{\Lkeyword{trunc}=0 1 2 3} truncates the vertices 0, 1, 2 and 3.
13 \begin{LTXexample}[width=6cm]
14 \psset{viewpoint=50 50 30 rtp2xyz,Decran=25,lightsrc=viewpoint}
15 \begin{pspicture}(-3,-2)(2,2)
25 \begin{LTXexample}[width=6cm]
26 \psset{viewpoint=50 50 30 rtp2xyz,Decran=25,lightsrc=viewpoint}
27 \begin{pspicture}(-3,-2)(2,2)