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README.37
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1991-07-25
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mgif 3.7 91/7/25
----------------
This is a new version of mgif, a GIF viewer for monochrome monitors (only).
There are no new features, just improvements and some bug fixes. Notable
amongst the improvements is dynamic memory allocation. Mgif now allocates
whatever memory is available rather than resorting to static arrays. This
should please more than a few people.
The last posted version was 3.5. Get the documentation from there. Source
to 3.5 was also posted, though I do not have time right now to post source
to this version. The changes are fairly small.
Changes from 3.5 to 3.7:
- all: everything is now maintained under RCS (thanks to apratt@atari
for the port of RCS). Initial revs of each file correspond to 3.5's
version numbering for each file.
- flicker.c: fix flicker for SimpConv2Gray so image is not so dark.
Also make sure last word in each pixel row gets dumped to screen
(this only pertains to cut and zoom operations).
- mgif.c: since version now uses $Id$, clean up version string by
removing "$Id: " and " $" from string before it is used.
- mgif.c: add noise, beta, etc to "what" display. Also fix size for
new/transformed image.
- mgif.c: check for color rez and abort if so.
- mgif.c,process.c,readgif.c,readpi.c: add dynamic memory for arrays.
Most changes are in mgif.c. New globals (maximg,maxraw) replace
defines MAXIMG,MAXRAW in other files.
- low.c: eliminate grid and just draw boundaries. Cursors remain
XOR lines.
- mgif.c,low.c: "fix" bug with detecting insert key during cut (I
think this is really a bug in Alcyon).
I tested this on a half dozen different GIF images, all of which were smaller
than 640x480 and did not see any problems. Remember, this is only for GIF87a
files, and only for 640x400 mono monitors. It will probably not run on a TT.
with lots of memory (2MB or more) you should be able to view 1000x1000 images,
though only 640x400 will be on the screen. There is still no way to pan
larger images.
Enjoy...
-Bill Rosenkranz
rosenkra@convex.com