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rletopaint - convert an RLE file to MacPaint format using dithering
rletopaint [ -l ] [ -r ] [ -g [ gamma ] ] [ -o outfile.paint ] [ infile
]
Rletopaint converts a file from RLE(5)
format to MacPaint
format. The program uses dithering to convert from a full 24 bit color
image to a bitmapped image. If the RLE file is larger than a MacPaint image
(576×720) it is cropped to fit.
Because MacPaint files have their coordinate
origin in the upper left instead of the lower left, the RLE file should
be piped through rleflip(1)
-v before rletopaint.
The resulting file can
be downloaded to a Macintosh in binary mode, and should be given a type
of PNTG and a creator of MPNT, so it will be recognized as a MacPaint
file.
- -l
- Use a linear map in the conversion from 24 bits to bitmapped
output.
- -g [ gamma ]
- Use a gamma map of gamma (gamma is 2.0 if not specified).
- -r
- Invert the sense of the output pixels (white on black instead of black
on white). For normal images, you probably want this flag.
painttorle(1)
,
urt(1)
, RLE(5)
.
John W. Peterson. Byte compression routine by Jim Schimpf.
Should use a color map in the file, if present.
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