code: function (x, y) {
              // Make position relative to object center point.
              x -= this.pos.x;
              y -= this.pos.y;
              // Pythagorean theorem.
              return (
                  ((x * x) / this.radiusSq.x) +
                  ((y * y) / this.radiusSq.y)
              ) <= 1.0;
          }
docs: check if this circle/ellipse contains the specified point
  @name containsPoint
  @memberOf me.Ellipse.prototype
  @function
  @param  {Number} x x coordinate
  @param  {Number} y y coordinate
  @return {boolean} true if contains