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Man Pages


Manual Reference Pages  -  FBZOOM (1)

.ds Aq ’

NAME

fbzoom - modify zoom and window parameters of a frame buffer

CONTENTS

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 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 image_sqrsize

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

-w image_width

displays the image image_width pixels wide (default is 512).

-n 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>.

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BRL-CAD FBZOOM (1) 04/04/2016

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