Anitype.register('U', {
 
  author: 'Sama Kanbour',
  website: 'www.facebook.com/SamaKanbour',
 
  construct: function(two, points) {
    var anitype = this;
    var polygon = anitype.makePolygon(points);
    var step = 0.1 / 15;
    polygon.subdivide(15);
    var circles = _.map(polygon.vertices, function(v) {
      var circle = two.makeCircle(0, 0, 2);
      circle.translation.x = v.x;
      circle.translation.y = v.y;
      return circle;
    });
    _.each(circles, function(c, i){
      c.scale = 0;
      anitype.addTween(c, {
        to: { scale: 3 },
        easing: Anitype.Easing.Elastic.Out,
        duration: 60 / 15,
        start: step * i
      });
    });
    return two.makeGroup(circles);
  }
 
});

Anitype.register('O', {
 
  author: 'Sama Kanbour',
  website: 'www.facebook.com/SamaKanbour',
 
  construct: function(two, points) {
    var anitype = this;
    var vertices = anitype.makePolygon(points)
      .subdivide(3)
      .vertices;
    var circles = _.map(vertices, function(v, i) {
      var corona = makeTriangle(two, 30);
      corona.translation.set(v.x, v.y);
      corona.rotation = Math.atan2(-v.y, -v.x) + Math.PI / 2;
      return corona;
    });
    anitype.addTick(function(t){
      _.each(circles, function(c, i) {
        c.rotation += Math.PI * 2 / 60;
      });
    });
    return two.makeGroup(circles);
  }
});
 
function makeTriangle(two, size) {
  var tri = two.makePolygon(-size, 0, size, 0, 0, size);
  return tri;
}