FBZOOM(1)
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,
- -T
-
toggles the sense of the pan commands.
- -F frame_buffer
-
explicitly specifies the frame buffer. Otherwise, the environment variable FB_FILE specifies the current framebuffer; see brlcad(1).
- -s(or -S) image_sqrsize
-
displays the image file as a square, image_sqrsize pixels per side (default is 512x512).
- -w(or -W) image_width
-
displays the image image_width pixels wide (default is 512).
- -n(or -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), plot3-fb(1), -rle-fb(1)-
COPYRIGHT
This software is Copyright (c) 1989-2021 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