定位完成~

王强
1 parent 6be10167
Showing 2 changed files with 81 additions and 11 deletions
src/common/helper.class.js
src/pages/search/search.vue
@@ -196,7 +196,7 @@ export default class Helper {
 	/* 数据格式处理 结束 */
-	/* 定位 开始 */
+	/* 定位相关处理 开始 */
 	/**
 	 * 获取用户地理位置坐标
@@ -214,6 +214,70 @@ export default class Helper {
 		}
 	}
-	/* 定位 结束 */
+	/**
+	 * GPS坐标转换为高德火星坐标，调用gcj_encrypt函数，传入wgsLat(纬度)和wgsLon(经度)参数
+	 */
+	GPS = {
+		PI : 3.14159265358979324,
+		x_pi : 3.14159265358979324 * 3000.0 / 180.0,
+		delta : function (lat, lon) {
+			// Krasovsky 1940
+			//
+			// a = 6378245.0, 1/f = 298.3
+			// b = a * (1 - f)
+			// ee = (a^2 - b^2) / a^2;
+			var a = 6378245.0; //  a: 卫星椭球坐标投影到平面地图坐标系的投影因子。
+			var ee = 0.00669342162296594323; //  ee: 椭球的偏心率。
+			var dLat = this.transformLat(lon - 105.0, lat - 35.0);
+			var dLon = this.transformLon(lon - 105.0, lat - 35.0);
+			var radLat = lat / 180.0 * this.PI;
+			var magic = Math.sin(radLat);
+			magic = 1 - ee * magic * magic;
+			var sqrtMagic = Math.sqrt(magic);
+			dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * this.PI);
+			dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * this.PI);
+			return {'lat': dLat, 'lon': dLon};
+		},
+	
+		//GPS---高德
+		wgs84ToGcj02 : function ( wgsLat , wgsLon ) {
+
+			// 将坐标转成浮点数
+			wgsLat = parseFloat(wgsLat);
+			wgsLon = parseFloat(wgsLon);
+
+			if (this.outOfChina(wgsLat, wgsLon)) {
+				return {'lat': wgsLat, 'lon': wgsLon};
+			}
+	
+			var d = this.delta(wgsLat, wgsLon);
+			return {'lat' : wgsLat + d.lat,'lon' : wgsLon + d.lon};
+		},
+		outOfChina : function (lat, lon) {
+			if (lon < 72.004 || lon > 137.8347) {
+				return true;
+			}
+			if (lat < 0.8293 || lat > 55.8271) {
+				return true;
+			}
+			return false;
+		},
+		transformLat : function (x, y) {
+			var ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
+			ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
+			ret += (20.0 * Math.sin(y * this.PI) + 40.0 * Math.sin(y / 3.0 * this.PI)) * 2.0 / 3.0;
+			ret += (160.0 * Math.sin(y / 12.0 * this.PI) + 320 * Math.sin(y * this.PI / 30.0)) * 2.0 / 3.0;
+			return ret;
+		},
+		transformLon : function (x, y) {
+			var ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
+			ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
+			ret += (20.0 * Math.sin(x * this.PI) + 40.0 * Math.sin(x / 3.0 * this.PI)) * 2.0 / 3.0;
+			ret += (150.0 * Math.sin(x / 12.0 * this.PI) + 300.0 * Math.sin(x / 30.0 * this.PI)) * 2.0 / 3.0;
+			return ret;
+		}
+	};
+
+	/* 定位相关处理 结束 */
 }
 \ No newline at end of file
@@ -95,8 +95,8 @@
                     borderColor: "#FC1541"
                 },
                 coordinate: {           // 经纬度定位参数
-                    longitude: "0",
-                    latitude: "0",
+                    longitude: 0,
+                    latitude: 0,
                     location: false
                 },
                 titles: {               // 板块标题
@@ -215,9 +215,15 @@
              */
             positionCallback(position) {
-                // 设置经纬度定位参数
-                this.$set(this.coordinate, "longitude", position.coords.longitude);
-                this.$set(this.coordinate, "latitude", position.coords.latitude);
+                // 判断是否有GPS坐标转换高德坐标函数
+                if (typeof this.$parent.helper === "object" && typeof this.$parent.helper.GPS === "object") {
+
+                    let marsCoordinates = this.$parent.helper.GPS.wgs84ToGcj02(position.coords.latitude, position.coords.longitude);
+
+                    // 设置经纬度定位参数(火星坐标)
+                    this.$set(this.coordinate, "longitude", marsCoordinates.lon);
+                    this.$set(this.coordinate, "latitude", marsCoordinates.lat);
+                }
                 // 定位执行完成，设置定位成功标识参数
                 this.$set(this.coordinate, "location", true);
@@ -235,16 +241,16 @@
                 // 定位出错提示
                 switch(positionError.code) {
                     case positionError.PERMISSION_DENIED:
-                        Toast("用户拒绝定位");
+                        // Toast("用户拒绝定位");
                         break;
                     case positionError.POSITION_UNAVAILABLE:
-                        Toast("无权获取当前位置");
+                        // Toast("无权获取当前位置");
                         break;
                     case positionError.TIMEOUT:
-                        Toast("定位请求超时");
+                        // Toast("定位请求超时");
                         break;
                     case positionError.UNKNOWN_ERROR:
-                        Toast("未知定位错误");
+                        // Toast("未知定位错误");
                         break;
                 }