[pstricks] oblique grids

[Jorge Luis Llanio]

Hello out there,

I wonder how to draw slightly obliqued 3D grids using PSTRICKS,  much in
the spirit of the macro \PstGridThreeD  within pst-gr3d ?



              .-------------.
            .                .
          ------------    /
        /                 /   /
       /                /   .
       -----------  .

Thanks very much in advance,
                                                   Jorge Luis