Hi Kip,
This is related to the fact that C long has 64bit storage for 64bit OS while
long is 32bit in 32bit OS.
XColor struct in X11/Xlib.h has "unsigned long pixel" component and this is used
at NCARG.
XWDColor struct in X11/XWDFile.h has the correct platform independent constant
byte variables.
So change all XColor to XWDColor in ncarview/src/lib/libncarg_ras/xwd.c file.
And change "_swaplong((char *) &xcolors[i].pixel, sizeof(long));" line
to "_swaplong((char *) &xcolors[i].pixel, sizeof(xcolor[i].pixel));".
There are two lines which has the above syntax.
_swaplong in misc.c file assumes long is 4 byte.
But fortunately this causes no problem in NCARG ncarview raster library.
Then recompile NCARG and test your program.
Regards,
Jong-Gwan
-----Original Message-----
From: ncarg-talk-bounces_at_ucar.edu [mailto:ncarg-talk-bounces_at_ucar.edu] On Behalf
Of Mary Haley
Sent: Tuesday, September 13, 2005 1:18 AM
To: Kip Smith
Cc: ncarg-talk_at_ucar.edu
Subject: Re: idt print to xwd file comes out wrong
Hi Kip,
The XWD driver in idt is old and I wouldn't recommend using this tool to convert
to XWD files. We might be able to fix this, but it would be a low priority at
this point, since the idt developer is no longer available.
If you want to convert to other formats, like xwd, png, gif, etc, I would
recommend using one of the many free tools out there, like ImageMagick. You can
have your NCAR Graphics output go to a PS or PDF file, and then you can use
these tools to convert to another format.
Meanwhile, if you can send me your NCGM, I can take a quick look at it to see if
I have problems at this end.
Thanks,
\
--Mary
On Thu, 8 Sep 2005, Kip Smith wrote:
>
> I intalled the lastest version of NCAR graphics on my dual Opteron
> workstation running SuSE linux 9.3 and PG FORTRAN 6. I ran several
> programs and they created ncgm files which are the same as on my old
> system. However, when I use idt to print the graphic to an xwd file,
> the xwd image is incorrect (see the attached file which is the xwd
> file converted to png format). The colors are not the ones in the ncgm
> version and this image is offset. What's gone wrong?
>
> Kip Smith
>
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Received on Tue Sep 13 2005 - 18:02:23 MDT
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