ColorConvert.js For Titanium

ColorConvert.js

var hsv2rgb = function(hsv) {
    var h = hsv.hue, s = hsv.sat, v = hsv.val;
    var rgb, i, data = [];
    if (s === 0) {
        rgb = [v, v, v];
    } else {
        h = h / 60;
        i = Math.floor(h);
        data = [v * (1 - s), v * (1 - s * (h - i)), v * (1 - s * (1 - (h - i)))];
        switch(i) {
        case 0:
            rgb = [v, data[2], data[0]];
            break;
        case 1:
            rgb = [data[1], v, data[0]];
            break;
        case 2:
            rgb = [data[0], v, data[2]];
            break;
        case 3:
            rgb = [data[0], data[1], v];
            break;
        case 4:
            rgb = [data[2], data[0], v];
            break;
        default:
            rgb = [v, data[0], data[1]];
            break;
        }
    }
    return '#' + rgb.map(function(x) {
        return ("0" + Math.round(x * 255).toString(16)).slice(-2);
    }).join('');
};

/**
 * HSV to RGB color conversion
 *
 * H runs from 0 to 360 degrees
 * S and V run from 0 to 100
 *
 * Ported from the excellent java algorithm by Eugene Vishnevsky at:
 * http://www.cs.rit.edu/~ncs/color/t_convert.html
 *
 * Refffered Concepr From http://snipplr.com/view/14590/hsv-to-rgb/
 */
function hsvToRgb(h, s, v) {
    var r, g, b;
    var i;
    var f, p, q, t;
    // Make sure our arguments stay in-range
    h = Math.max(0, Math.min(360, h));
    s = Math.max(0, Math.min(100, s));
    v = Math.max(0, Math.min(100, v));
    // We accept saturation and value arguments from 0 to 100 because that's
    // how Photoshop represents those values. Internally, however, the
    // saturation and value are calculated from a range of 0 to 1. We make
    // That conversion here.
    s /= 100;
    v /= 100;
    if (s == 0) {
        // Achromatic (grey)
        r = g = b = v;
        return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)];
    }
    h /= 60;
    // sector 0 to 5
    i = Math.floor(h);
    f = h - i;
    // factorial part of h
    p = v * (1 - s);
    q = v * (1 - s * f);
    t = v * (1 - s * (1 - f));
    switch(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;
    default:
        // case 5:
        r = v;
        g = p;
        b = q;
    }
    return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)];
}