code: function(location) {
        return Math.sqrt(Math.pow(location.x - this.matrix[4], 2), Math.pow(location.y - this.matrix[5], 2));
      }
docs: Get the 2D distance between a location and this matrix's translation.
  
  @param location a location object, with x,y Number properties
  @returns {Number} the calculated distance
  @preserve