JavaScript
(function (Raphael) {
Raphael.colorwheel = function (x, y, size, initcolor, element) {
return new ColorWheel(x, y, size, initcolor, element);
};
var pi = Math.PI,
doc = document,
win = window,
ColorWheel = function (x, y, size, initcolor, element) {
size = size || 200;
var w3 = 3 * size / 200,
w1 = size / 200,
fi = 1.6180339887,
segments = 3,//pi * size / 50,
size20 = size / 20,
size2 = size / 2,
padding = 2 * size / 200,
t = this;
var H = 1, S = 1, B = 1, s = size - (size20 * 4);
var r = element ? Raphael(element, size, size) : Raphael(x, y, size, size),
xy = s / 6 + size20 * 2 + padding,
wh = s * 2 / 3 - padding * 2;
w1 < 1 && (w1 = 1);
w3 < 1 && (w3 = 1);
// ring drawing
var a = pi / 2 - pi * 2 / segments * 1.3,
R = size2 - padding,
R2 = size2 - padding - size20 * 2,
path = ["M", size2, padding, "A", R, R, 0, 0, 1, R * Math.cos(a) + R + padding, R - R * Math.sin(a) + padding, "L", R2 * Math.cos(a) + R + padding, R - R2 * Math.sin(a) + padding, "A", R2, R2, 0, 0, 0, size2, padding + size20 * 2, "z"].join();
for (var i = 0; i < segments; i++) {
r.path(path).attr({
stroke: "none",
fill: "#8fd117",
transform: "r" + [(360 / segments) * i, size2, size2]
});
}
r.path(["M", size2, padding, "A", R, R, 0, 1, 1, size2 - 1, padding, "l1,0", "M", size2, padding + size20 * 2, "A", R2, R2, 0, 1, 1, size2 - 1, padding + size20 * 2, "l1,0"]).attr({
"stroke-width": w3,
stroke: "#fff"
});
t.startCursor = r.set();
var h = size20 * 2 + 2;
...