Convert HSV to RGB

hsv2rgb.js

function HSVtoRGB (hsv) {
    // this doesn't work for the values of 0 and 360
    // here's the hacky fix
    var h = hsv[0];
    if (h === 0) h = 1;
    if (h === 360) h = 359;
    // Rebase the h,s,v values
    h = h/360;
    var s = hsv[1]/100
    ,   v = hsv[2]/100
    ,   h_i = Math.floor(h*6)
    ,   f = h * 6 - h_i
    ,   p = v * (1 - s)
    ,   q = v * (1 - f*s)
    ,   t = v * (1 - (1 - f)*s)
    ,   r = 256
    ,   g = 256
    ,   b = 256
    ;

    switch(h_i) {
        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 [Math.floor(r*255), Math.floor(g*255), Math.floor(b*255)];
}

function componentToHex (c) {
    var hex = c.toString(16);
    return hex.length == 1 ? "0" + hex : hex;
}

function HSVtoHex (hsv) {
    var rgb = HSVtoRGB(hsv);
    return "#" + componentToHex(rgb[0]) + componentToHex(rgb[1]) + componentToHex(rgb[2]);
}