whole_func_string: function(p) {
          var dx = p.x - this.x,
              dy = p.y - this.y;
          return dx * dx + dy * dy;
      }
func_code_string: function(p) {
          var dx = p.x - this.x,
              dy = p.y - this.y;
          return dx * dx + dy * dy;
      }
func_documentation_string: Calculate the distance from this point to another point,
  without the square root step. Useful if you're comparing
  relative distances.
  @param {Point} p the other point
  @return {Number} distance