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- ppmtorast(1) PBM Plus ppmtorast(1)
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- NAME
- ppmtorast - convert a portable pixmap into a Sun raster file
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- SYNOPSIS
- ppmtorast [-s] [-x] [ppmfile]
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- DESCRIPTION
- Reads a portable pixmap as input. Produces a Sun raster
- file as output. NOTE: since it uses Sun-specific include
- files and libraries, ppmtorast will compile only on Suns.
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- Color values in Sun raster files are eight bits wide, so
- ppmtorast will automatically scale colors to have a maxval
- of 255. An extra ppmcscale step is not necessary.
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- The -s flag forces the result to be in RT_STANDARD form;
- otherwise, it defaults to RT_BYTE_ENCODED, which is smaller
- but, well, less standard.
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- The -x flag has to do with the color map. Normally,
- ppmtorast attempts to rearrange or add to the colormap so
- that white is in slot 0 and black is in slot 1 -- the stan-
- dard Sun default colormap. However, if you are doing
- screenloads from within Xsun, on a CG2, you want the oppo-
- site -- black in slot 0 and white in slot 1. (Why would you
- be doing something this silly? Well, I have sometimes found
- it useful.) So, the -x flag sets this.
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- The pbmtorast filter is significantly faster if your images
- are just black and white.
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- SEE ALSO
- rasttoppm(1), ppm(5), pbmtorast(1), rasttopbm(1)
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- AUTHOR
- Copyright (C) 1989 by Jef Poskanzer.
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- Permission to use, copy, modify, and distribute this
- software and its documentation for any purpose and without
- fee is hereby granted, provided that the above copyright
- notice appear in all copies and that both that copyright
- notice and this permission notice appear in supporting docu-
- mentation. This software is provided "as is" without
- express or implied warranty.
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- Printed 5/25/90 31 March 1989 1
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