tri

function onGLC(glc) {
    glc.loop();
    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;

    // your code goes here:

    var num = 5,
        step = width/num;

    for (var x=step; x<=width-step; x +=step) {
        for (var y=step; y<=height-step; y +=step) {
            list.addPoly({
                x: x,
                y: y,
                rotation: [45,135],
                radius: step*.55,
                sides: 3,
            });
            list.addPoly({
                x: x,
                y: y,
                fillStyle: "white",
                rotation: [180,360],
                radius: step*.45,
                sides: 3
            });
        }
    }
}