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- IFFCNV by Bruce Holloway
- Copyright (c) 1987,1988 by Bruce Holloway
-
- This program and documentation may be copied freely so long as this message
- and the title screen are left unchanged. By freely copied, I mean without
- charge or profit.
-
- Plink: ATARI*TROS
- Delphi: ALBATROSS
- Usenet: holloway@drivax.UUCP
-
-
- When I started on this program, there was no way to display IFF files on
- the ST. Now there are, but I've gradually been adding to this program, and
- it's well on its way to becoming a powerful image processing tool, as well
- as an omni-format picture converter similar to PICSWITCH.
-
- You can choose any one of a number of input and output formats...
-
- Input format Output Format
-
- Neochrome (.NEO) Neochrome (.NEO)
- DEGAS (.PI?) DEGAS (.PI?)
- Tiny (.TN?) IFF (.IFF)
- IFF (.???)
- Spec512 (.SP?)
-
- And more to be added...
-
- GIF (.GIF) GIF (.GIF)
- GEM bitmap(.IMG) Tiny (.TNY)
- Spec512 (.SP?)
-
- DIFFERENCES FROM PICSWITCH:
-
- IFFCNV can handle _any_ IFF file - HAM mode, high resolution, interlaced,
- monochrome, color - doesn't matter. IFFCNV can read Spec512 files and
- convert them to any of the output formats. And IFFCNV will soon handle
- GIF files - Compuserve's new graphics standard.
-
- USING IFFCNV
-
- Screen 1: Title Screen
-
- Screen 2: File selector - Select the file to display/convert. Press "Okay"
- to continue, or "Cancel" to exit the program.
-
- Screen 3: Conversion parameters
-
- Dither - No Dither - use only the colors available; no blending.
- Shade - do normal dithering.
- Diamond - on color screens, do another type of dither.
- on monochrome screens, do a cumulative error
- shading - often produces striking results.
- Will port to color screens soon.
-
- Palette - Color - Use all colors.
- Monochrome - Use only shades of gray.
- Spectrum 512 - Use up to 48 different colors per scanline.
-
- Resolution - Low Res - Convert to ST low resolution (320x200x4)
- Medium Res - Convert to ST medium res (640x200x2)
- High Res - Convert to ST high res (640x400x1)
-
- Compression - Average - When squashing pictures to fit on a smaller
- display, average the pixels.
- Dropout - Ignore every other pixel.
-
- Convert - Display picture, converting it first to
- indicated resolution.
-
- Display - Display picture in resolution closest to
- the original.
-
- Cancel - Return to Screen 2.
-
- Screen 4: "Converting" - Messages displayed while converting the
- "IFF Color Pass" picture. This could be anywhere from a
- "IFF Display Pass" second to a minute or so.
-
- Screen 5: The Picture. - The picture you've loaded/converted. If
- the destination resolution was mono and
- you have a color monitor or vice versa,
- the display will look a bit munged, but it
- will save correctly. Hit any key to proceed
- to the next screen.
-
- Screen 6: Output - Select output type, if any.
-
- Amiga .IFF - Output to Interchange File Format.
- DEGAS .PI? - Output to DEGAS file format.
- Neochrome .NEO - Output to Neochrome. LOW RES ONLY.
- View - Look at the picture again.
- Save - Save under current name and indicated
- extension.
- Save As... - Choose a new name.
- Cancel - Return to screen 2.
- Init Printer - Load a DEGAS printer driver.
- Print - Print screen on printer. Must have done an
- "Init Printer" first.
-
- NOTES: Most HAM mode pictures use well over a hundred colors. Pictures that
- use more than about forty to fifty go beyond IFFCNV's ability to blend them
- from the available sixteen colors, so it is usually better to convert them
- to monochrome. Try it both ways, of course... 32 color pictures usually
- turn out very nicely.
-
- Color during IFF and Spectrum 512 conversions is not supported in medium
- resolution; you must use low resolution for color.
-
-