一、RGB转化到HSV的算法:
max=max
(R
,G
,B
)；
min=min
(R
,G
,B
)；
V=max
(R
,G
,B
)；
S=
(max-min
)/max；
i
f
(G = max
) H = 120+
(B-R
)/
(max-min
)* 60
；
if
(B = max
) H = 240 +
(R-G
)/
(max-min
)* 60
；
if
(H < 0
) H = H+ 360
；
二、HSV转化到RGB的算法:
if (s = 0)
R=G=B=V;
else
H /= 60;
i = INTEGER(H);
f = H - i;
a = V * ( 1 - s );
b = V * ( 1 - s * f );
c = V * ( 1 - s * (1 - f ) );
switch(i)
case 0: R = V; G = c; B = a;
case 1: R = b; G = v; B = a;
case 2: R = a; G = v; B = c;
case 3: R = a; G = b; B = v;
case 4: R = c; G = a; B = v;
case 5: R = v; G = a; B = b;