FBMASK

Section: User Commands (1)
Updated: 25-Jun-90
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NAME

fbmask - mask a rectangle in a grayscale file

SYNOPSIS

fbmask [ -<type> ] x0 y0 x1 y1 value < 8bit > 8bit

DESCRIPTION

Paints the specified gray value val in a rectangle starting at x and y with the given width and height.

EXAMPLE

To put a 50 pixel wide black border around a 640 by 480 pixel grayscale image, you could use the following pipeline (which outputs a Sun rasterfile):

    % fbmask   0   0  50 480 0 < foo.8bit |
      fbmask   0   0 640  50 0 < foo.8bit |
      fbmask   0 430 640 480 0 < foo.8bit |
      fbmask 590   0 640 480 0 < foo.8bit > bar.8bit

BUGS

None known.

HISTORY

Copyright (C) 1989,1990 by Michael Mauldin. Permission is granted to use this file in whole or in part for any purpose, educational, recreational or commercial, provided that this copyright notice is retained unchanged. This software is available to all free of charge by anonymous FTP and in the UUNET archives.

25-Jun-90 Michael Mauldin at Carnegie Mellon University: Release 1.0 mlm@cs.cmu.edu
07-Mar-89 Michael L. Mauldin at Carnegie Mellon University: Beta release (version 0.9) mlm@cs.cmu.edu

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Time: 13:25:57 GMT, October 17, 2022