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Aminet AMIGA CDROM (1994)(Walnut Creek)[Feb 1994][W.O. 44790-1].iso
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gl2p1.lzh
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gl.man
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1992-09-09
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GL 2.1 03.09.92
ABOUT
GL is an Amiga GL file player. It implements a subset of the GRASP
commands on Amiga GL files created with GLIB. These are based on
MS-DOS GL files, but with an intermediate conversion stage to
improve the playback speed and conversion quality.
This is an update to GL 1.3 which played a number of MS-DOS GL
files with no intermediate conversion.
Amiga GL files are available from me, for one. See CONTACT INFO
section below for more information. Distrubition is somewhat
limited due to the pornographic nature of most GL animations.
GL is one of the four programs in the GL 2.1 distribution. The
others are the librarian GLIB, the .PIC/.CLP converter PIC2HL, and
the font extracter GLFONT.
GL is Copyright © 1992 by John Bickers.
PLAYING AN ANIMATION
From the command line, type GL followed by the name of the
animation you want to play. There are no command line options.
From the Workbench, click on the animation you want to play, then
shift-double-click on GL. Or double-click on GL and select an
animation from the requester.
If you are running the freely distributable version of GL, an
information requester will pop up. Press Enter or click on the
requester button, and the animation will proceed.
While playing, there are some key commands available. Most
importantly, the Esc key will terminate the animation. Many
animations loop endlessly, and Esc is the only way to stop them.
Secondly, GL animations are often full of small delays between
each frame. Pressing a key or clicking the left mouse button will
skip the next delay. For example, you can accelerate many
animations by holding down the 'n' key.
GL uses double buffering to avoid pixel fizz etc. If you move the
GL screen to the back, and/or cause the GL window to be
deactivated, GL will eventually (at the next buffer swap or delay
spot) notice and pause. To continue the animation, make the GL
screen the front one, then click on it.
FROM MS-DOS TO AMIGA
Previous GL players played directly from the MS-DOS format. This
version requires an intermediate conversion step, where you take
the MS-DOS animation apart with GLIB, convert each picture into
an Amiga format, modify the .TXT file, then put everything back
together using GLIB.
Only a subset of the available GRASP commands have been
implemented at the moment. I implemented most commands I found in
the animations I have, but I've ignored sound and text commands,
and many of the fades. Let me know if the lack of some command
is a problem for any conversion you're doing.
The reasons for this intermediate step are fourfold. First, the
player had to understand a variety of input picture formats. With
the conversion step, the player only has to understand the Amiga
format. For example, GL 1.3 could not play animations that
contained .GIF files.
Secondly, the quality of the conversion of each picture depended
on the player. With the conversion step, you can use programs
like HamLab do the conversion. They can be used to convert a wider
range of likely input files, from .GIF through to the PCPaint C,
J, L, and M types (using PIC2HL).
Thirdly, the conversion step provides flexibility between which
MS-DOS format the original used, and which Amiga format your
converted file uses. For example, GL 1.3 always played MS-DOS
VGA animations in LORES mode, while AmiGRASP 1.0a (by Koh Kian
Beng) always played them in HAM mode. In practise, some VGA
animations only use 32 colors, which makes LORES ideal, while
others use many more, which makes HAM ideal.
And finally, because the converted data is in an Amiga format,
it can be loaded and displayed much more rapidly than previous
players could manage.
CREDITS
GL is written by John Bickers using SAS C 5.10a.
GRASP is a product of Microtex Industries, Inc. It's a sort of
slideshow animation program on PClones.
The reqtools.library is used for Workbench messages and the
startup notice. ReqTools is Copyright (c) Nico François.
The xpkmaster.library and sublibraries are the work of U. Dominik
Mueller and colleagues. Dominik can be reached on the net at the
address: umueller@amiga.physik.unizh.ch.
The GL icon with the two faces is a DEVO thing, from their album
"TOTAL DEVO".
DISTRIBUTION
GL is Copyright © 1992 by John Bickers.
Distribution is via normal channels. That is, distribute it for
free, or for Fred Fish like costs, but not more. And remember to
include the documentation.
This program is shareware. A registration fee of 40 NZD is
requested. Pay however you like, as long as the result can be
cashed (this rules out credit cards).
CONTACT INFO
If you're having problems, want to make suggestions, want to
register, want to discuss conversion, or are keen to move data, I
can be reached at:
John Bickers
214 Rata St
Naenae 6301
New Zealand
Or: jbickers@templar.actrix.gen.nz
DISCLAIMER
It works on my machine.