[GRASS-dev] discussion: replacing ps.map

[Jachym Cepicky]

Glynn, I confirm, it works like a charm now!!

thanks a lot

btw: what do you think about replacement of ps.map with new PS driver
&& d.* commands?

would it be easier to add line styles and area fillings to ps.map
(where it partely is, at least the areas) or to d.rast/d.vect ? I
think, it would be great to have only one set of tools for both - data
displaying and hard copy maps preparation...

jachym

2007/4/6, Glynn Clements <glynn at gclements.plus.com>:
>
> Jachym Cepicky wrote:
>
> > hi,
> > tahanks for you answer
> >
> > 2007/4/6, Glynn Clements <glynn at gclements.plus.com>:
> > >
> > > J-Báchym Čepický wrote:-A
> > >
> > > > the PS driver works nice, thanks!
> > > >
> > > > What about d.text.freetype ? I wonder how complicated it would be to
> > > > implement too..?
> > >
> > > Huh?
> > >
> > > d.text.freetype should work with the PS driver, although it will
> > > rasterise the bitmaps at a resolution of 1 point, then embed the
> > > bitmaps.
> >
> > d.mon PS
> > d.text.freetype font=luximr text="hallo, world" at=10,10
> > d.mon stop=PS
> >
> > gv map.ps
> >
> > document is not opend
>
> Oops. There are a couple of bugs in the bitmap code.
>
> The first is in the prolog; the string is allocated with one byte per
> pixel, when it should be one bit, causing too much data to be read.
>
>         Index: lib/psdriver/psdriver.ps
>         ===================================================================
>         RCS file: /grassrepository/grass6/lib/psdriver/psdriver.ps,v
>         retrieving revision 1.2
>         diff -u -r1.2 psdriver.ps
>         --- lib/psdriver/psdriver.ps    30 Mar 2007 06:29:35 -0000      1.2
>         +++ lib/psdriver/psdriver.ps    6 Apr 2007 13:48:00 -0000
>         @@ -39,7 +39,7 @@
>          /BITMAP {
>            gsave
>              4 2 roll translate
>         -    1 index string /tmpstr exch def
>         +    1 index 7 add 8 idiv string /tmpstr exch def
>              true [1 0 0 1 0 0] {currentfile tmpstr readhexstring pop} imagemask
>            grestore
>          } bind def
>
> If you make this change to the map.ps file, the file should display,
> but you'll notice the second bug; the accumulator wasn't being
> cleared, resulting in "echoes":
>
>         Index: lib/psdriver/Draw_bitmap.c
>         ===================================================================
>         RCS file: /grassrepository/grass6/lib/psdriver/Draw_bitmap.c,v
>         retrieving revision 1.1
>         diff -u -r1.1 Draw_bitmap.c
>         --- lib/psdriver/Draw_bitmap.c  30 Mar 2007 04:51:23 -0000      1.1
>         +++ lib/psdriver/Draw_bitmap.c  6 Apr 2007 13:48:00 -0000
>         @@ -25,6 +25,7 @@
>                                 {
>                                         output("%02X", acc);
>                                         bit = 0x80;
>         +                               acc = 0;
>                                 }
>                         }
>
> Both of these are fixed in CVS, and it appears to work.
>
> > same for d.font && d.text
> >
> > What am I missing?
>
> That I said "should work" rather than "does work" ;)
>
> This time, I have actually tested it.
>
> --
> Glynn Clements <glynn at gclements.plus.com>
>


-- 
Jachym Cepicky
e-mail: jachym.cepicky gmail com
URL: http://les-ejk.cz
GPG: http://www.les-ejk.cz/pgp/jachym_cepicky-gpg.pub