Re: [Groff] User Problem with grops's Import.

[Ralph Corderoy]

Hi,

Thanks to an off-list suggestion I'm laying some blame at the feet
of pnmtops and have tried an alternative method.

    $ cat 1i.ps
    %!PS-Adobe-2.0 EPSF-2.0
    %%Creator: tenfingers
    %%Title: noname.ps
    %%Pages: 1
    %%BoundingBox: 0 0 72 72
    %%HiResBoundingBox: 0.000000 0.000000 71.999998 71.999998
    %%EndComments
    0 setlinewidth
    0 0 moveto 0 72 rlineto 72 0 rlineto 0 -72 rlineto closepath stroke
    showpage

The two Box active comments are from what gs tells me.

    $ gs -q -sDEVICE=bbox 1i.ps
    %%BoundingBox: 0 0 72 72
    %%HiResBoundingBox: 0.000000 0.000000 71.999998 71.999998
    >>showpage, press <return> to continue<<
    GS>

And I'm still feeding it into

    $ cat import.ex
    .psbb 1i.ps
    .
    .sp 3i
    \Z'\h'|0'\X'ps: import 1i.ps \n[llx] \n[lly] \n[urx] \n[ury] 72000 72000''
    \Z'\h'|0'\D'l 1i -1i''

(.psbb ignores %%HiResBoundingBox but I thought I'd put it in anyhow.)

The resulting image is probably dead the right size, but it displaced
somewhat to the left.

I'd guess that the rounding of the %%BoundingBox figures is what could
be causing my problems.

For instance, with my original w.ps figure gs reports

    %%BoundingBox: 301 357 311 405
    %%HiResBoundingBox: 301.679991 357.479989 310.319991 404.519986

I'm coming to the opinion that %%BoundingBox is worse than useless
unless you can engineer %%BoundingBox to equal %%HiResBoundingBox.


Ralph.