Return the gray level of
color-spec
. If
color-spec
is not from the :GRAY
model, the component is calculated.
COLOR 2 > (color:make-gray 0.66667s0)
#(:GRAY 0.66667S0)
COLOR 3 > (color-level *)
0.66667S0
COLOR 4 >
CAPI User Guide and Reference Manual (Unix version) - 3 Aug 2017