Function gradient

lib/API/Dashboard.js:445–457

(p, rgb_beginning, rgb_end)

 *  Hexa #FFFFFF
 */
function gradient(p, rgb_beginning, rgb_end) {

    var w = (p / 100) * 2 - 1;

    var w1 = (w + 1) / 2.0;
    var w2 = 1 - w1;

    var rgb = [parseInt(rgb_beginning[0] * w1 + rgb_end[0] * w2),
        parseInt(rgb_beginning[1] * w1 + rgb_end[1] * w2),
            parseInt(rgb_beginning[2] * w1 + rgb_end[2] * w2)];

    return "#" + ((1 << 24) + (rgb[0] << 16) + (rgb[1] << 8) + rgb[2]).toString(16).slice(1);
}