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FB-BW(1)			    BRL-CAD			      FB-BW(1)

NAME
       fb-bw - save a framebuffer image	in a black and white bw	file

SYNOPSIS
       fb-bw [-hi] [-Fframebuffer] [-X scr_xoff] [-Y scr_yoff] [-s squaresize]
	     [-w width]	[-n height] [file.bw]

DESCRIPTION
       Fb-bw will take a region	of a framebuffer display and save it as	a
       black and white bw(5) format file. The environment variable

       FB_FILE is used to select the display device (see brlcad(1)). If	this
       variable	is not set, the	default	device for your	system will be used.
       Alternatively, the framebuffer may be explicitly	specified by using the
       -F flag.

       By default, the output file will	be made	size 512x512 pixels.
       Specifying the -h flag, changes the default to 1024x1024. The -s	flag
       will set	both the file height and width to be the given size, while -w
       and -n sets them	individually.

       A first quadrant	coordinate system is used (origin in lower left	of
       screen),	and the	area saved is normally from this origin. The -X	and -Y
       flags can be used to move the origin to an offset position on the
       screen. The -i flag switches to a fourth	quadrant system, both in the
       storage order as	well as	the origin offset coordinates (i.e. origin is
       now the upper left corner of the	screen).

       An equal	blending of red, green,	and blue is done. For more complicated
       black and white conversion use fb-pix(1)	and pix-bw(1).

SEE ALSO
       brlcad(1), bw-fb(1), fb-pix(1), pix-bw(1), bw(5)

AUTHOR
       BRL-CAD Team

COPYRIGHT
       This software is	Copyright (c) 1989-2013	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				  07/08/2017			      FB-BW(1)

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

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