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1995-03-19
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FliT Documentation
Program:
FliT 1.0.
Purpose:
Convert Autodesk Animator .FLI animations to IFF ANIMs. .FLI animations
are found on PClones.
Author:
John Bickers (JJB Templar) - jbickers@templar.actrix.gen.nz
Public Domain DLTA 5 compression code by Jim Kent (Fish 185).
Credits:
This was written using Lattice C 5.10a.
Jim Kent's "skip.c" module from AmigaLibDisk #185 is used to do
the compression of DLTA chunks in the IFF ANIM files FliT creates.
The format of a .FLI file was obtained from an article posted to
Usenet's comp.graphics by Kevin Darling (kdarling@hobbes.ncsu.edu).
Neither of the above is aware of, or had any other part in the
development of, this program. That is, the bugs and brute force are
mine. :)
Command line options:
A summary of these options can be accessed with "flit ?".
-m[file] Make an IFF ANIM file. The [file] parameter is optional,
and if not given the file "ram:flit.anim" will be used.
-p Pause between frames. Press Space or click the left
mouse button to proceed to next frame. .FLIs often
contain filler frames, so the display may not change,
even though the frame will have.
-v Be verbose. Various bits of information I found useful
when writing the program. Now excessive.
-g Use a gray color map. This should be used on animations
that have more than 16 colors. It happened to be the
easiest way me to get something acceptable from larger
colormaps. :) No dithering, HAM, or other baggage. :)
-j[m[/d]] Jiffy modifiers. The .FLI jiffy value will be multiplied
by this fraction. For example, "-j2" would slow the
final animation down by a factor of two. "-j4/2" would
do the same.
Miscellaneous:
Premature termination:
When running, the program can be terminated by pressing Esc in
the display screen. If you used the -m option, the ANIM file
will be completed.
Playback rate:
Is based purely on how fast the program can go. .FLI animations
have the data in a byte-per-pixel format that makes unpacking
slow. In addition, the -m option adds further delays. Any ANIM
file produced should play back much more smoothly.
The Animation Loop:
If you use the -m option, then when the animation ends FliT adds
two frames to the end of the ANIM file which duplicate the
1st and 2nd frames of the animation. This allows animation
players (for example, ShowANIM -C) to loop the animation
smoothly.
To do:
Is HAM/dithering worth doing? Any other manipulations anyone's
interested in? Any bugs (I've only got a handful of .FLIs to test
with)?
There's a fair amount of optimization one could do too...
Personal stuff:
Suggestions are welcome, and may even be implemented. I can be
contacted at the following:
Snail: John Bickers,
214 Rata St,
Naenae 6301,
New Zealand.
Email: jbickers@templar.actrix.gen.nz
Phone: 677-334, 672-085, or 746-625.
People who use this program are also invited to send some notification
of their existence to any of the above points. Feel free to pay
something (esp. if you want to request that something be added :) too,
but payment is not a requirement. I'd be more interested in
animations, actually (NOT NOT NOT via email! I have to pay $$ for
that!).
This program may be redistributed freely, but not for commercial gain
(ie: Fred Fish type costs are ok). Note that you should include the
documentation.
FliT is Copyright © 1991 by John Bickers.
History:
1.0 Begun 17-Mar-91.
Disclaimer:
"It works on my machine" (so far :).