Re: NSImageRGBColorTable crash
Re: NSImageRGBColorTable crash
- Subject: Re: NSImageRGBColorTable crash
- From: Glenn Andreas <email@hidden>
- Date: Mon, 19 Apr 2004 17:34:53 -0500
At 11:22 PM +0200 4/19/04, David Remahl wrote:
[[Resend, because the message didn't appear on the list the first time...]]
Has anyone had any success with using NSImageRGBColorTable to generate GIFs?
If tmp is a 768 byte file, containing a color lookup table, the
following will crash:
Have you tried a valid color lookup table?
% python -c 'f=open("/tmp/clut","w"); f.write("\xff"*768);
f.close()' # create a 768 byte file filled with FF.
This would just be a single color (I forget if 0xffffff is white or
black for GIF files), which would make it impossible to do any sort
of dithering (which is where it is crashing).
I'd at least try something like:
python -c 'f = open("/tmp/clut","w"); for i in range(0,255):
f.write("%c%c%c" % (i,i,i))'
which would produce a grayscale ramp to at least give it somethign
useful to dither...
--
Glenn Andreas email@hidden
mondo blobbo, Cythera, Theldrow, oh my!
Mad, Bad, and Dangerous to Know
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