Name
fbzoom — modify zoom and window parameters of a frame buffer
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.