|fbzoom [-F frame_buffer] [-h] [-s image_sqrsize] [-w image_width] [-n image_height]|
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,
-FÂ frame_bufferexplicitly specifies the frame buffer. Otherwise, the environment variable FB_FILE specifies the current framebuffer, see brlcad(1).
-hchanges the frame buffer size to 1024x1024. By default, it is assumed to be 512x512 pixels.
-sÂ image_sqrsizedisplays the image file as a square, image_sqrsize pixels per side (default is 512x512).
-wÂ image_widthdisplays the image image_width pixels wide (default is 512).
-nÂ image_heightdisplays 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 ^Vzoom Bigger (*2)
szoom Smaller (*0.5)
+zoom Bigger (+1)
-zoom Smaller (-1)
h Bpan Left (1)
j Npan Down (1)
k Ppan Up (1)
l Fpan Right (1)
H ^Bpan Left (many)
J ^Npan Down (many)
K ^Ppan Up (many)
L ^Fpan Right (many)
Ttoggle sense of pan commands
zzoom 1 1
rReset to normal
Note that these commands change the way the frame buffer is viewed but not the image in the frame buffer.
bw-fb(1), gif-fb(1), pix-fb(1), pl-fb(1), rle-fb(1)
This software is Copyright (c) 1986-2013 by the United States Government as represented by U.S. Army Research Laboratory.
Reports of bugs or problems should be submitted via electronic mail to <firstname.lastname@example.org>.