hypno

function onGLC(glc) {
    glc.loop();
    glc.size(540, 540);
    glc.setDuration(2);
    glc.setFPS(30);
//     glc.setMode('single');
//    glc.setEasing(false);
    glc.styles.backgroundColor = "black";

    var list = glc.renderList,
        width = glc.w,
        height = glc.h,
        color = glc.color;

    // your code goes here:

    for (var i=0; i<30; i++) {
        list.addCircle({
            x: width/2,
            y: [height*.25,height*.3],
            radius: 20*i,
            fill: false,
            lineWidth: [5,12],
            stroke: true,
            strokeStyle: "beige",
            phase: .05*i
        });
    }
}