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BWRECT(1)			    BRL-CAD			     BWRECT(1)

NAME
       bwrect -	extract	a rectangle from a black and white bw file

SYNOPSIS
       bwrect [-s squaresize] [-w width] [-n height] [-S out_squaresize]
	      [-W out_width] [-N out_height] [-x xorig]	[-y yorig]
	      [-o out_file.bw] file.bw > [out_file.bw]

DESCRIPTION
       bwrect extracts a rectangular region from a black and white bw(5)
       format file. The	default	input image size is 512x512. The x,y
       coordinates of the origin (the default xorig=0, yorig=0 corresponds to
       the lower left corner) are passed as arguments for -x and -y.

       The -w file_width flag specifies	the width of each scanline in the
       input file, in pixels.  -W scr_width does the same for the display
       device.

       The -n file_height and -N scr_height flags specify the height in
       scanlines of the	input file and display device respectively.

       -s squarefilesize and -S	squarescrsize set both the height and width to
       the size	given (for input file and display device respectively).

       (scr_width and scr_height must be set to	positive values, either
       separately via -W and -N, or jointly via	-S. This is because they start
       with default values of zero.)

       -o out_file.bw is a way of specifying output file name.

       This utility supports pipes and can read/write from/to them.

SEE ALSO
       brlcad(1), bwcrop(1), bwscale(1), pixrect(1), bw(5)

BUGS
       We ought	to allow the questions to be answered on the command line so
       that shell scripts, etc., could use this.

AUTHOR
       BRL-CAD Team

COPYRIGHT
       This software is	Copyright (c) 1989-2019	by the United States
       Government as represented by U.S. Army Research Laboratory.

BUG REPORTS
       Reports of bugs or problems should be submitted via electronic mail to
       devs@brlcad.org

BRL-CAD				  03/02/2021			     BWRECT(1)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | BUGS | AUTHOR | COPYRIGHT | BUG REPORTS

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