[pstricks] hiddenLine in pst-3dplot

[Patrice MEGRET]

Dear Herbert,

I have some trouble with hiddenLine in pst-3dplot.

>From your example
\begin{pspicture}(-2,-1.25)(3,4.25)
\psset{Alpha=30,Beta=30}
\pstThreeDCoor[xMin=-3,xMax=1,yMin=-1,yMax=2,zMin=-1,zMax=4]
\pstThreeDBox[hiddenLine=true](-1,1,2)(0,0,2)(2,0,0)(0,1,0)
\pstThreeDDot[drawCoor=true](-1,1,2)
\end{pspicture}
when hiddenLine is true the backsides are not drawn.

If I use my example below, with hiddenLine true I got (1) dashed lines for the backsides, and (2) these lines are not correctly place.
\begin{pspicture}[showgrid=false](-3,-4)(7,4.5)
\psset{unit=1,Alpha=75,Beta=30,nameX=$1$,nameY=$2$,nameZ=$3$}
\pstThreeDCoor[linecolor=red,xMax=7,yMax=6.5,zMax=4.5]
\pstThreeDBox[hiddenLine=true](0,0,0)(4,-1,0)(0,6,0)(0,1,3)
\end{pspicture}


Best regards,
Patrice


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