Home » Archimedes archive » Micro User » MU 1990-11.adf » PD-Stuff » Graphics/!Translatr/Docs/Updates
Graphics/!Translatr/Docs/Updates
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Micro User » MU 1990-11.adf » PD-Stuff |
| Filename: | Graphics/!Translatr/Docs/Updates |
| Read OK: | ✔ |
| File size: | 23BE bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
Duplicates
There is 1 duplicate copy of this file in the archive:
- Archimedes archive » Micro User » MU 1990-11.adf » PD-Stuff » Graphics/!Translatr/Docs/Updates
- Archimedes archive » Micro User » MU 1991-02.adf » PD-Stuff » Pictures/!Translatr/Docs/Updates
File contents
Updates since version 5.50
5.50 - Changed default auto zoom flag to OFF.
- Re-organised the menu tree using two submenu levels instead of one,
improving selection and 'look' (a small root menu instead of the old
'bulky' one).
- Closest colour to RGB now calculated using R, G and B weights 1 (used
to be 'luminance' weights), so RGB distance=dR^2+dG^2+dB^2. Makes no
real difference and maps are calculated more quickly now.
- Added 'Invert RGB' option to invert the image's RGB values before
processing it. This results in 'negative' images.
This flag is saved in new status files.
5.60 - Ability to read PCX (IBM compatibles) format added, filetype &697.
Currently only 16-colour EGA and 256-colour images can be read.
- Slightly speeded up menu's.
- Renamed 'Repeated byte' compression to more common 'Run length'.
5.70 - QRT RAW format added (pure 24-bit RGB), filetype &698.
- PCX palette bug removed : palette was ok, but not passed correctly,
so images appeared to have no palette or a bad one.
- Info on colours changed to 'number of bits' instead of number of
colours/greys (=2^bits), because 2^24 (QRT) is a bit much ...
- Palette submenu was not updated correctly when using ADJUST. Fixed.
- Auto-selected grey palette (for some images without palette) was not
quite right (especially for 2-colour images). Fixed.
- GIF images NOT 2,4,16 or 256 colours not decoded right : 'bug' pixels
scattered throughout the image because of erroneous determination of
'first char of translation for old' (too few bits when it wasn't
within one byte totally, which can only occur for 'uneven' character
lengths, i.e. 3,5,6,7 bits). Must have been introduced in 5.42. Fixed.
- No 'greyscale warning' anymore for SUN 1-bit files without palette,
as these are more or less 'allowed' to have none (i.e. are black and
white in these cases).
- Major speedup of almost all formats, up to 1500%(!) :
Degas 100% (i.e. twice as fast), Img 800%, Amiga IFF 30%,
MacPaint 1100%, GIF 25% (who was it that said it could not be done
any faster :-) ?), SUN (monochrome) 1500%, PCX (EGA) 120%,
Proartisan, Watford, Render Bender a few percent (3-8%).
These are rough figures, based on speed tests of the unpacking
process alone, screen blanking on, mode 0, from RAM disc.
- TIFF (Tag Image File Format) format added, in a limited way :
bilevel, greyscale and palette colour (1,2,4 and 8-bit) are handled,
but no compression or multi-colourplane images (yet). Filetype is
&FF0 (already allocated by Acorn, there seem to be plans to make TIFF
replace sprite files !).
- Changed 'Screen' in image info to 'Image'.
- Rotate bug raised its head again (see 5.32). Calculation of buffer
location wrong (words mistaken for bytes) so when new sprite is bigger
than old one (more wastage) buffer overlaps partly with bottom of
new sprite, causing overwrite there. Unfortunately, the 1K safety
margin from sprite end to lomem prevented problem from being detected
(only extra wastage >1K gave problems). Fixed.
5.71 - ArVis Videographics (15-bits RGB) format added. The 15 bits per pixel
are held in two sprite files, which are in a directory called 'HIP'
and 'LOP' respectively. The user should drag the sprite file in the
'HIP' directory to Translator. The 'LOP' file will then be located
automatically. This is the first (inevitable) exception to the
'unique filetype, everything in a single file' rule.
5.72 - Slight speedup of error spreading (around 7%)
- Translator now also attempts to display the image correctly in
modes with less than the required number of colours. It does this
by determining the most frequent colours in the image (as many as
the colours available in the current mode), and selecting their
RGB values as the palette. The less frequent colours are then mapped
to the closest of these selected colours. This gives acceptable
results for most images up to a perfect result for 256-colour black
and white images which are displayed in 16 colour modes.
- Reduced memory need for main program. Module takes up more though,
so total memory cost stays the same.
6.00 - Major improvement : output mode and palette are now fully user-
selectable, and error spreading now works in ALL output modes.
Two extra icons, 'Output mode' and 'Output palette' have been added
to the 'Processing' submenu. In the former the 'Auto' mode (the
old situation, where Translator determines the best output mode
AND palette), or 'Current' mode may be selected. When in 'Current'
mode, the current mode is used as the output mode and the user may
also select the output palette in the 'Output palette' submenu (not
in 256 colour modes however, the standard palette is always used) :
either the current palette (i.e. any palette can be chosen for the
output image, e.g. via the desktop palette utility), the default
palette (as after VDU20), or a linear greyscale from black to white
('Current', 'Default' and 'Greyscale' respectively).
- The palette choices have been removed, to even more closely satisfy
the WIMP guidelines, in this case 'thou shall not change the palette'
(even though applications like Translator HAVE to (unless users want
to change it by hand for each and every image !!! Do you ?).
The old 'Desktop' palette can be selected with 'Default' in the
palette utility anyway, and the 'Image' palette can be selected using
the new 'Image palette' icon (and there's no 'ticking' anymore,
because the palette may be changed by some other application (another
Translator possibly !), most notably the palette utility). The old
'Default' palette selection (or indeed any other) may be done by,
for example, executing a (standard) palette file.
- Bug removed : after rotate, a Full save saved a wrong sprite. Ok now.
- Bug removed : for images smaller than the minimum visible window area
the background contained junk because of the transparency of the
window. In these cases the background is now cleared specifically.
- Some example palette files for 16 colour modes are in the 'Palette16'
directory. They divide the 4 available colourbits between red, green
and blue in three combinations (2,1,1, 1,2,1 and 1,1,2).
- If there are no other Translators active, Translator's module is
killed on quitting (if only more applications did this !).
- Width of some submenus reduced for 'better looks', some names too.
- Created templates for most of the windows.
- Bug removed : PCX images sometimes (randomly) appeared to have 'no
palette'. Ok now.
- Lots of cosmetic changes.
- Added 'Zig zag' flag to processing options. When ON, error spreading
plots will plot every other line in the opposite direction (as usual),
so patterning effects may be reduced. When OFF, lines are always
plotted left to right (which may be useful when the 'zig zagged'
result is less pleasing than expected).
The zig zag flag is saved in new status files.
- Changed 'RGB resolution' submenu to three sliders for red green and
blue.
- Changed 'Normal size' in 'Zoom' submenu to '1:1'.
- Added (pre-)scaling possibility for both x and y ('Scaling' in the
'Processing' submenu). Any scaling ratio may be used, which then
defines a 'pre-scaling' on the image. This ensures that images
on which error spreading is applied, and which are to be scaled down,
retain full quality, in contrast to scaling down AFTER the
calculations (which loses the error factors in the neighbor pixels).
It is only possible to scale an image down (i.e. multiplier <=
divisor). The option '1:1' in the 'Scaling' submenu resets the
scaling factors to normal.
- Added possibility to output 'Clear' files (filetype &690),
Translator's own filetype, which retains all information of the
original image. Refer to the documentation for more information.
- Can now also read PCX 1 and 2 bit per pixel 'EGA' files.
6.01 - Palette now reset to desktop palette on closing image window.
- Bug cured : Missing ENDIF when clicking on grey area of save file
window.
- Null reasoncodes not taken anymore when not necessary (only needed
when awaiting acknowledge from filer). Speeds up the whole system.
Pointer_Leaving/Entering_Window also masked out.
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00000010 65 72 73 69 6f 6e 20 35 2e 35 30 0a 0a 35 2e 35 |ersion 5.50..5.5|
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00000070 20 75 73 69 6e 67 20 74 77 6f 20 73 75 62 6d 65 | using two subme|
00000080 6e 75 20 6c 65 76 65 6c 73 20 69 6e 73 74 65 61 |nu levels instea|
00000090 64 20 6f 66 20 6f 6e 65 2c 0a 20 20 20 20 20 20 |d of one,. |
000000a0 20 20 20 69 6d 70 72 6f 76 69 6e 67 20 73 65 6c | improving sel|
000000b0 65 63 74 69 6f 6e 20 61 6e 64 20 27 6c 6f 6f 6b |ection and 'look|
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00000ad0 20 20 20 20 20 20 20 20 26 46 46 30 20 28 61 6c | &FF0 (al|
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