docs: function() {
              //Get the center Point in the viewport
              var center = this.centerAt();
              var start = this.px2pos(
                  -center.left + Crafty.viewport.width / 2,
                  -center.top + Crafty.viewport.height / 2
              );
              var end = this.px2pos(
                  -center.left - Crafty.viewport.width / 2,
                  -center.top - Crafty.viewport.height / 2
              );
              return {
                  x: {
                      start: start.x,
                      end: end.x
                  },
                  y: {
                      start: start.y,
                      end: end.y
                  }
              };
          }