Geo add containCoord and getRegionByCoord methods

src/coord/geo/Geo.js

@@ -53,6 +53,20 @@ define(function (require) {
          */
         dimensions: ['lng', 'lat'],
 
+        /**
+         * If contain given lng,lat coord
+         * @param {Array.<number>}
+         * @readOnly
+         */
+        containCoord: function (coord) {
+            var regions = this.regions;
+            for (var i = 0; i < regions.length; i++) {
+                if (regions[i].contain(coord)) {
+                    return true;
+                }
+            }
+            return false;
+        },
         /**
          * @param {Object} geoJson
          * @param {Object} [specialAreas]
@@ -133,6 +147,15 @@ define(function (require) {
             return this._regionsMap[name];
         },
 
+        getRegionByCoord: function (coord) {
+            var regions = this.regions;
+            for (var i = 0; i < regions.length; i++) {
+                if (regions[i].contain(coord)) {
+                    return regions[i];
+                }
+            }
+        },
+
         /**
          * Add geoCoord for indexing by name
          * @param {string} name