WGS84,GCJ02, BD09坐标转换
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1 public class Gps 2 { 3 4 private double wgLat; 5 private double wgLon; 6 7 public Gps(double wgLat, double wgLon) 8 { 9 setWgLat(wgLat); 10 setWgLon(wgLon); 11 } 12 13 public double getWgLat() 14 { 15 return wgLat; 16 } 17 18 public void setWgLat(double wgLat) 19 { 20 this.wgLat = wgLat; 21 } 22 23 public double getWgLon() 24 { 25 return wgLon; 26 } 27 28 public void setWgLon(double wgLon) 29 { 30 this.wgLon = wgLon; 31 } 32 33 public String toString() 34 { 35 return wgLat + "," + wgLon; 36 } 37 }
1 public class PositionUtil { 2 3 public static String BAIDU_LBS_TYPE = "bd09ll"; 4 5 public static double pi = 3.1415926535897932384626; 6 public static double a = 6378245.0; 7 public static double ee = 0.00669342162296594323; 8 9 /** 10 * 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System 11 * 12 * @param lat 13 * @param lon 14 * @return 15 */ 16 public static Gps gps84_To_Gcj02(double lat, double lon) { 17 if (outOfChina(lat, lon)) { 18 return null; 19 } 20 double dLat = transformLat(lon - 105.0, lat - 35.0); 21 double dLon = transformLon(lon - 105.0, lat - 35.0); 22 double radLat = lat / 180.0 * pi; 23 double magic = Math.Sin(radLat); 24 magic = 1 - ee * magic * magic; 25 double sqrtMagic = Math.Sqrt(magic); 26 dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi); 27 dLon = (dLon * 180.0) / (a / sqrtMagic * Math.Cos(radLat) * pi); 28 double mgLat = lat + dLat; 29 double mgLon = lon + dLon; 30 return new Gps(mgLat, mgLon); 31 } 32 33 /** 34 * * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return 35 * */ 36 public static Gps gcj_To_Gps84(double lat, double lon) { 37 Gps gps = transform(lat, lon); 38 double lontitude = lon * 2 - gps.getWgLon(); 39 double latitude = lat * 2 - gps.getWgLat(); 40 return new Gps(latitude, lontitude); 41 } 42 43 /** 44 * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 将 GCJ-02 坐标转换成 BD-09 坐标 45 * 46 * @param gg_lat 47 * @param gg_lon 48 */ 49 public static Gps gcj02_To_Bd09(double gg_lat, double gg_lon) { 50 double x = gg_lon, y = gg_lat; 51 double z = Math.Sqrt(x * x + y * y) + 0.00002 * Math.Sin(y * pi); 52 double theta = Math.Atan2(y, x) + 0.000003 * Math.Cos(x * pi); 53 double bd_lon = z * Math.Cos(theta) + 0.0065; 54 double bd_lat = z * Math.Sin(theta) + 0.006; 55 return new Gps(bd_lat, bd_lon); 56 } 57 58 /** 59 * * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 * * 将 BD-09 坐标转换成GCJ-02 坐标 * * @param 60 * bd_lat * @param bd_lon * @return 61 */ 62 public static Gps bd09_To_Gcj02(double bd_lat, double bd_lon) { 63 double x = bd_lon - 0.0065, y = bd_lat - 0.006; 64 double z = Math.Sqrt(x * x + y * y) - 0.00002 * Math.Sin(y * pi); 65 double theta = Math.Atan2(y, x) - 0.000003 * Math.Cos(x * pi); 66 double gg_lon = z * Math.Cos(theta); 67 double gg_lat = z * Math.Sin(theta); 68 return new Gps(gg_lat, gg_lon); 69 } 70 71 /** 72 * (BD-09)-->84 73 * @param bd_lat 74 * @param bd_lon 75 * @return 76 */ 77 public static Gps bd09_To_Gps84(double bd_lat, double bd_lon) { 78 79 Gps gcj02 = PositionUtil.bd09_To_Gcj02(bd_lat, bd_lon); 80 Gps map84 = PositionUtil.gcj_To_Gps84(gcj02.getWgLat(), 81 gcj02.getWgLon()); 82 return map84; 83 84 } 85 86 public static bool outOfChina(double lat, double lon) { 87 if (lon < 72.004 || lon > 137.8347) 88 return true; 89 if (lat < 0.8293 || lat > 55.8271) 90 return true; 91 return false; 92 } 93 94 public static Gps transform(double lat, double lon) { 95 if (outOfChina(lat, lon)) { 96 return new Gps(lat, lon); 97 } 98 double dLat = transformLat(lon - 105.0, lat - 35.0); 99 double dLon = transformLon(lon - 105.0, lat - 35.0); 100 double radLat = lat / 180.0 * pi; 101 double magic = Math.Sin(radLat); 102 magic = 1 - ee * magic * magic; 103 double sqrtMagic = Math.Sqrt(magic); 104 dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi); 105 dLon = (dLon * 180.0) / (a / sqrtMagic * Math.Cos(radLat) * pi); 106 double mgLat = lat + dLat; 107 double mgLon = lon + dLon; 108 return new Gps(mgLat, mgLon); 109 } 110 111 public static double transformLat(double x, double y) { 112 double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y 113 + 0.2 * Math.Sqrt(Math.Abs(x)); 114 ret += (20.0 * Math.Sin(6.0 * x * pi) + 20.0 * Math.Sin(2.0 * x * pi)) * 2.0 / 3.0; 115 ret += (20.0 * Math.Sin(y * pi) + 40.0 * Math.Sin(y / 3.0 * pi)) * 2.0 / 3.0; 116 ret += (160.0 * Math.Sin(y / 12.0 * pi) + 320 * Math.Sin(y * pi / 30.0)) * 2.0 / 3.0; 117 return ret; 118 } 119 120 public static double transformLon(double x, double y) { 121 double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 122 * Math.Sqrt(Math.Abs(x)); 123 ret += (20.0 * Math.Sin(6.0 * x * pi) + 20.0 * Math.Sin(2.0 * x * pi)) * 2.0 / 3.0; 124 ret += (20.0 * Math.Sin(x * pi) + 40.0 * Math.Sin(x / 3.0 * pi)) * 2.0 / 3.0; 125 ret += (150.0 * Math.Sin(x / 12.0 * pi) + 300.0 * Math.Sin(x / 30.0 126 * pi)) * 2.0 / 3.0; 127 return ret; 128 } 129 130 }
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