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ppmtoxpm !!!ppmtoxpm NAME SYNOPSIS DESCRIPTION OPTIONS LIMITATIONS SEE ALSO AUTHOR ---- !!NAME ppmtoxpm - convert a PPM iamge into an X11 pixmap !!SYNOPSIS __ppmtoxpm__ [[__-name=__''xpmname''] [[__-rgb=__''rgb-textfile''] [[__-alphamask=__''pgmfile''] [[''ppmfile''] Minimum unique abbrevations are acceptable. !!DESCRIPTION Reads a portable pixmap as input. Produces X11 pixmap (version 3) as output which can be loaded directly by the XPM library. For example, to convert the file xbmtopbm dot | ppmtoxpm -name dot or, with a rgb text file (in the local directory) xbmtopbm dot | ppmtoxpm -name dot -rgb rgb.txt !!OPTIONS __-name=__''xpmname'' The __-name__ option allows you to specify the prefix string which is printed in the resulting XPM output. If not specified, will default to the filename (without extension) of the __-name__ or ''ppmfile'', (i.e. your input is from Standad Input), the prefix string defaults to the string __noname__. __rgb=__''rgb-textfile'' The __-rgb__ option allows you to specify an X11 rgb text file for the lookup of color name mnemonics. This rgb text file is typically the /usr/lib/X11/rgb.txt of the MIT X11 distribution, but any file using the same format may be used. When specified and a RGB value from the ppm input matches a RGB value from the __-rgb or if the RGB values don't__ match, then __ppmtoxpm produces the color specifications in the #RGB, #RRGGBB,__ #RRRGGGBBB, or #RRRRGGGGBBBB hexadecimal format. __-alphamask=__''pgmfile'' This option names a PGM file to use as an alpha (transparency) mask. The file must contain an image the same dimensions as the input image. __ppmtoxpm__ marks as transparent any pixel whose position in the alpha mask image is at most half white. If you don't specify __-alphamask__, __ppmtoxpm__ makes all pixels in the output opaque. __ppmcolormask__ is one way to generate an alpha mask file. You might also generate it by extracting transparency information from an XPM file with the __-alphaout__ option to __xpmtoppm__. There are similar options on other Netpbm converters that convert from formats that include transparency information too. !!LIMITATIONS An option to match the closest (rather than exact) color name mnemonic from the rgb text would be a desirable enhancement. Truncation of the least significant bits of a RGB value may result in nonexact matches when performing color name mnemonic lookups. !!SEE ALSO ppmcolormask(1), xpmtoppm(1), ppm(5) XPM Manual by Arnaud Le Hors lehors@mirsa.inria.fr !!AUTHOR Copyright (C) 1990 by Mark W. Snitily. 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 documentation. This software is provided This tool was developed for Schlumberger Technologies, ATE Division, and with their permission is being made available to the public with the above copyright notice and permission notice. Upgraded to XPM2 by Paul Breslaw, Mecasoft SA, Zurich, Switzerland (paul@mecazh.uu.ch) Thu Nov 8 16:01:17 1990 Upgraded to XPM version 3 by Arnaud Le Hors (lehors@mirsa.inria.fr) Tue Apr 9 1991 ----
4 pages link to
ppmtoxpm(1)
:
pbmfilters(1)
xpmtoppm(1)
Man1p
ppm(5)
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