mapCircle

createMapCircle: function(latitude, longitude){
        var latitudeRadius = this.getRadiusInLatitudeDegrees(this.radius);
        var longuitudeRadius = this.getRadiusInLongitudeDegrees(this.radius, latitude);

        for (var i = 0; i < 360; i++) {
          var angle = i * (3.141516/180);
          this.push('points', {
            latitude: latitude + latitudeRadius * Math.sin(angle),
            longitude: longitude + longuitudeRadius * Math.cos(angle),
          });
        }

      },

      getRadiusInLatitudeDegrees: function(radiusMeters) {
        var metersPerLatitudeDegree = 110574;
        return radiusMeters / metersPerLatitudeDegree;
      },

      getRadiusInLongitudeDegrees(radiusMeters, circleCenterLatitude) {
        var metersPerLongitudeDegree = 111320 * Math.cos(circleCenterLatitude);
        return radiusMeters / metersPerLongitudeDegree;
      }