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PIXBACKGND(1)			    BRL-CAD			 PIXBACKGND(1)

NAME
       pixbackgnd - generate a pix(5) shaded background

SYNOPSIS
       pixbackgnd [-h] [-i] [-s	squaresize] [-w	width] [-n height]
		  [-t title_height] [-a	top_inten] [-b bottom_inten] hue
		  saturation _ file.pix

       pixbackgnd [-h] [-i] [-s	squaresize] [-w	width] [-n height]
		  [-t title_height] red	green blue _ file.pix

DESCRIPTION
       Pixbackgnd generates a pix(5) format shaded background on stdout
       suitable	for making slides for a	presentation on. The upper portion of
       the screen is reserved for a title area,	and is drawn at	constant
       intensity 240, followed by a 4 scanline white bar, after	which the
       intensity smoothly decreases from 240 to	50.  Hue and saturation	are
       values from 0 to	255 and	can be selected	via fbcolor(1).	A hue of 160
       is a pleasing blue.

       By default, the title height is 80 scanlines, or	90 scanlines if	the -h
       flag is set, but	the -t title_height option may be used to specify
       another value. If title_height is set to	zero, then the white bar is
       omitted as well,	and the	entire display is smoothly shaded.

       By default, the display is assumed to be	512x512	pixels;	by specifying
       the -h flag, the	output size is changed to 1024x1024.

       By specifying the -i flag, the scanlines	will be	written	out in
       inverted	order (i.e., top to bottom). This is mostly useful with
       programs	like cat-fb(1)

       The -a and -b options can be used to set	the top	and bottom intensity,
       in the range of 0 to 255. By default, the top intensity is 240, and the
       bottom is 50.

EXAMPLES
       pixbackgnd 160 200 | pixmerge fg.pix - |	pix-fb pixbackgnd -t120	160
       250 pixbackgnd -i -t0 160 200 | cat-fb -O file.troff

SEE ALSO
       brlcad(1), fbcolor(1), pix-fb(1), pixmerge(1), cat-fb(1).

BUGS
       The starting and	ending intensities should probably be an option.

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			 PIXBACKGND(1)

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

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