function onGLC(glc) {
    glc.loop();
     glc.size(540, 540);
     glc.setDuration(2.5);
     glc.setFPS(30);
//     glc.setMode('single');
//     glc.setEasing(false);
    var list = glc.renderList,
        width = glc.w,
        height = glc.h,
        color = glc.color;

    // your code goes here:

    var w = 10,
        c = 0;
        step = 12;

    while( w<350) {
        c++;
        list.addRect({
            x: width / 2,
            y: height / 2,
            w: w,
            h: [w,10],
            fill: false,
            stroke: true,
            strokeStyle: color.hsva(0,0,0,.8),
            lineWidth:1,
            //rotation: [0,30+c*5],
            rotation: [0,180],
            phase: c/120
            //phase: .5/c,
            //phase: Math.sin(w*0.001)
        });
    	w += step;
    }
}