INTERP(6D) INTERP(6D)
NAME
interp - gamma-corrected color ramp generator
SYNOPSIS
/usr/demos/bin/interp
DESCRIPTION
Interp makes smooth color ranges. Two color chips and a
Gouraud-shaded polygon showing the shade range between them
are displayed. To make a color range, start windows for
showmap, cedit, and interp. Select the color at the lower
(usually darker) end of the shade range and use cedit to set
it to the desired value. Select the color at the top of the
shade range and edit it as well.
Now attach to (select) interp. Point to the lower color
(usually on showmap). Press and release the left mouse but-
ton. Point to the high color and repeat. Both the extreme
colors of your desired color ramp should be in the two large
color chips in the interp window. If you should make an er-
ror when selecting the extreme colors for your ramp, just
keep trying to use the left mouse button to pick the colors,
until the two color chips show the proper extreme color in-
dices.
When the extreme color indices are correctly chosen (which
is reflected in the color chips), the other colors of the
ramp can be interpolated. While interp is still selected
for input, press and release the middle mouse button. This
interpolates all the colors between the extreme colors.
The resultant color array will be gamma-corrected using the
floating-point constant in ~/.gamma. If no such file ex-
ists, the gamma constant is 1.0.
ORIGIN
Silicon Graphics, Inc.
Page 1 (last mod. 8/20/87)