25Days-3

function onGLC(glc) {
    glc.loop();
    glc.size(400, 400);
    glc.setDuration(3);
    // glc.setFPS(20);
    // glc.setMode("single");
    // glc.setEasing(false);
    glc.setMaxColors(10);
    glc.styles.backgroundColor = "black";
    var list = glc.renderList,
        width = glc.w,
        height = glc.h,
        color = glc.color;

    // your code goes here:
    var num=20;
    for (var k = 0; k < 7; k++) {
         for(var j=0;j<7;j++){
            for (var i=0; i<num; i++) {
                var offset1 = Math.random() * 300 - 150;
                var offset2 = Math.random() * 300 - 150;
                var verticalOffset = Math.random() * 30 - 15;
                var x = 40 +40 * j + 4*(i+1);
                var y = 40 + 40 * (k+1); // + verticalOffset
                list.addLine({
                    lineWidth: 1,
                    strokeStyle: "white",
                    // var x =
                    x0: x,
                    y0: y,
                    x1: [x + offset1, x + offset2],
                    y1: [y + offset1, y - offset2]
                    // phase: num*0.1
                });
            }
        };
    }
 }