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FBZOOM(1)			    BRL-CAD			     FBZOOM(1)

NAME
       fbzoom -	modify zoom and	window parameters of a frame buffer

SYNOPSIS
       fbzoom [-F frame_buffer]	[-h] [-s image_sqrsize]	[-w image_width]
	      [-n image_height]

DESCRIPTION
       Using vi(1) and/or emacs(1) -like keystrokes, fbzoom allows interactive
       zooming and panning of a	frame buffer. Using the	optional command line
       arguments,

       -F~A  frame_buffer
	   explicitly specifies	the frame buffer. Otherwise, the environment
	   variable FB_FILE specifies the current framebuffer, see brlcad(1).

       -h
	   changes the frame buffer size to 1024x1024. By default, it is
	   assumed to be 512x512 pixels.

       -s~A  image_sqrsize
	   displays the	image file as a	square,	image_sqrsize pixels per side
	   (default is 512x512).

       -w~A  image_width
	   displays the	image image_width pixels wide (default is 512).

       -n~A  image_height
	   displays the	image image_height pixels high (default	is 512).

       Fbzoom will display the image currently in the frame buffer and then
       act on commands entered by the user. Available commands are:

       b ^V
	   zoom	Bigger (*2)

       s
	   zoom	Smaller	(*0.5)

       +
	   zoom	Bigger (+1)

       -
	   zoom	Smaller	(-1)

       h B
	   pan Left (1)

       j N
	   pan Down (1)

       k P
	   pan Up (1)

       l F
	   pan Right (1)

       H ^B
	   pan Left (many)

       J ^N
	   pan Down (many)

       K ^P
	   pan Up (many)

       L ^F
	   pan Right (many)

       T
	   toggle sense	of pan commands

       c
	   goto	Center

       z
	   zoom	1 1

       r
	   Reset to normal

       q
	   Exit

       RETURN
	   Exit

       Note that these commands	change the way the frame buffer	is viewed but
       not the image in	the frame buffer.

SEE ALSO
       bw-fb(1), gif-fb(1), pix-fb(1), pl-fb(1), rle-fb(1)

AUTHOR
       BRL-CAD Team

COPYRIGHT
       This software is	Copyright (c) 1986-2013	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			     FBZOOM(1)

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

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