NAME

fbzoom - modify zoom and window parameters of a frame buffer

SYNOPSIS

fbzoom [-T] [-F frame_buffer] [-s|S image_sqrsize] [-w|W image_width] [-n|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,

-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)

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)

toggle sense of pan commands

goto Center

zoom 1 1

Reset to normal

Exit

RETURN

Exit

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

AUTHOR

BRL-CAD Team

COPYRIGHT

BUG REPORTS