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1990-06-21
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83 lines
_______________________________________________________________________________
MakeGIF 2.00 (RISCWARE) -------------------------------
This program is PUBLIC DOMAIN
Version date : 21 Jun 1990 -------------------------------
----------------
- Introduction -
----------------
MakeGIF will create GIF (Graphics Interchange Format) files from other
graphics files. Currently accepted input is :
- Archimedes sprite files (filetype &FF9)
- Translator Clear files (filetype &690)
GIF is a general file format for raster graphics data (devised by and
trademark of Compuserve Inc.), which uses a variation of LZW data compression
to reduce the file's size drastically.
GIF files are common to encounter on bulletin boards, in which images
originating from a variety of computers are stored and can be displayed
by a GIF decoder program.
One such program for the Archimedes is Translator, also written by me,
available from some bulletin boards, several public domain libraries and the
address mentioned below. This will not only convert GIF files to Archimedes
sprites but also TIFF, Amiga IFF, MacIntosh MacPaint, various Atari formats,
several 'native' formats, etc.. In addition to sprites, it can output the
'Clear' graphics filetype, which preserves the full input image contents
(in contrast to some sprites). Thus, using Translator and MakeGIF together,
most graphics formats accepted by Translator may be converted to a GIF file
without loss of picture information.
-------------------
- The application -
-------------------
MakeGIF is a full RISCOS multitasking application, and will install itself
on the iconbar when you double-click on the '!MakeGIF' application.
To make a GIF file, simply drag a sprite file or a Clear file to the iconbar
icon. A 'Save as' window will pop up, in which the leaf filename for the
resulting GIF file can be entered, after which the GIF icon should be dragged
to a filer window as usual. The GIF file will then be created. The GIF file
will be filetyped &695, which is the filetype for GIF files used by Translator.
MakeGIF buffers the input and output files in memory, so giving MakeGIF more
memory will speed up the conversion (how much depends on the file's sizes).
Only the first sprite encountered in a sprite file will be included in the
GIF file. Though the GIF standard includes the possibility for more than one
image in a GIF file, the standard actually requires that the images are
related (i.e. an animation sequence), and that they are displayed quickly
in succession. Because of the complexity of this, most GIF decoders will not
handle multiple images anyway.
If you have complaints, comments or bugs(!) to offer me, write to :
John Kortink
Middelhuisstr. 17
7482 EL Haaksbergen
The Netherlands
New versions are available from the same address : just send some money
to cover postage and a self-addressed envelope containing a 3.5" disc. As
this application is under continuous development, you are very likely to get
a newer version !
Happy GIFfing !!!
_______________________________________________________________________________
!!! NOTE !!!
You may NOT change this application or use ANY part of it in other products
without my approval. You may spread it freely (with *ALL* files included), but
not for any profit. This software is provided 'as is'. Using it is entirely at
your own risk.
_______________________________________________________________________________