-
Notifications
You must be signed in to change notification settings - Fork 4
/
colour.js
53 lines (41 loc) · 1.19 KB
/
colour.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
(function (i) {
var res = i.split(",");
var out = HSVtoRGB((res[0]), (res[1]), (res[2]));
out2 = rgbToHex((out.r), (out.g), (out.b))
return out2;
})(input)
function componentToHex(c) {
var hex = c.toString(16);
return hex.length == 1 ? "0" + hex : hex;
}
function rgbToHex(r, g, b) {
return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}
//https://stackoverflow.com/questions/17242144/javascript-convert-hsb-hsv-color-to-rgb-accurately
function HSVtoRGB(h, s, v) {
var r, g, b, i, f, p, q, t;
if (arguments.length === 1) {
s = h.s, v = h.v, h = h.h;
}
h = h / 360;
s = s / 100;
v = v / 100;
i = Math.floor(h * 6);
f = h * 6 - i;
p = v * (1 - s);
q = v * (1 - f * s);
t = v * (1 - (1 - f) * s);
switch (i % 6) {
case 0: r = v, g = t, b = p; break;
case 1: r = q, g = v, b = p; break;
case 2: r = p, g = v, b = t; break;
case 3: r = p, g = q, b = v; break;
case 4: r = t, g = p, b = v; break;
case 5: r = v, g = p, b = q; break;
}
return {
r: Math.round(r * 255),
g: Math.round(g * 255),
b: Math.round(b * 255)
};
};