octoShake

function onGLC(glc) {
    glc.loop();
    // glc.playOnce();
    glc.size(540, 540);
    glc.setDuration(3);
    glc.setFPS(30);
    // 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;

    // your code goes here:

    var n = 20;

        for (var i=0; i<n; i++) {
            list.addPoly({
                x: width/2,
                y: height/2,
                radius: [width*.2, width*.4],
                sides: [3,8],
                rotation: [90,270],
                fillStyle: "white",
                phase: 0.15/n*i,
                shake: 5,
                shadowColor: "rgba(0, 0, 0, 0.50)",
                shadowOffsetX: 5,
                shadowOffsetY: 5,
                shadowBlur: 20
            });
        }

}