cardinalPoints

var pointsObj = { N:0, E:90, S:180, W:270 };

var _getDegree = function (orientation) {
		switch (orientation) {
        case "N":
          return 0;
        case "E":
          return 90;
        case "S":
          return 180;
        case "W":
          return 270;
    }
	};
  
  var _getOrientation = function (degrees) {
		switch (degrees) {
        case 0:
          return "N";
        case 90:
          return "E";
        case 180:
          return "S";
        case 270:
          return "W";
        
    }
	};