CARD(9.1) CARD(9.1)
NAME
card, ramp - create simple color fields
SYNOPSIS
fb/card [ -crgba ] [ -wx0 y0 x1 y1 ] red [ green blue ] [
alpha ]
fb/ramp [ -v ] [ -wx0 y0 x1 y1 ] [ [ leftcolor ] rightcolor
]
DESCRIPTION
Card writes a constant (all pixels equal) picture on stan-
dard output. The red, green blue and alpha arguments are
numbers between 0 and 255. Green and blue default equal to
red. Alpha defaults to 255. Option -c specifies the CHAN=
attribute of the picture file. The default is CHAN=m,
CHAN=ma, CHAN=rgb, or CHAN=rgba depending on which of red,
green blue and alpha are specified.
Ramp creates a picture file whose pixel values range from
leftcolor to rightcolor across each scan line, writing on
standard output. Leftcolor defaults to 0; rightcolor
defaults to 255. If three arguments are given for leftcolor
and rightcolor the output will have CHAN=rgb. Otherwise, it
will have CHAN=m.
Option -v causes ramp to make a vertical ramp (leftcolor at
the top, rightcolor at the bottom).
For both commands, option -w specifies the size of the pic-
ture. The default gives WINDOW=0 0 1280 1024.
SEE ALSO
picfile(9.6)
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