col

function onGLC(glc) {
    glc.loop();
    // glc.playOnce();
    glc.size(540, 540);
    glc.setDuration(1.5);
    glc.setFPS(30);
    glc.styles.backgroundColor = "#202020";
    // glc.setMode("single");
    // glc.setEasing(false);

    var list = glc.renderList,
        width = glc.w,
        height = glc.h,
            color = glc.color,
            ox = width/2,
            oy = height/2,
            TWO_PI = Math.PI*2;

    // your code goes here:

    var num = 30, parts = 7;
    for (var j=0; j<parts; j++) {
        var f = 360.0/parts*j,
            a = 360.0/parts;
        for (var i=0; i<num; i++) {
            var d = 15/num*i,
                s = 10/num*i,
                slice = 360/parts*j,
                px = width/2 + Math.cos(Math.PI*2/parts*j)*35,
                py = height/2 + Math.sin(Math.PI*2/parts*j)*35;
            list.addCircle({
                x: px,
                y: py,
                rotation: -(360.0/parts)/2,
                startAngle: [a*j-s, a*j+s],
                endAngle: [a*(j+1)-s,a*(j+1)+s],
                radius: 200-200.0/num*i,
                stroke: true,
                strokeStyle: "rgba(20,20,20,.75)",
                lineWidth: .5,
                fillStyle: color.hsv(f,.9,.9),
                phase: i/num,
                drawFromCenter: true
            });
        }
    }
}