不同坐标系之间互转.doc

不同坐标系之间互转 /** * 不同坐标系之间转换工具 */ public class ConvertCoordinateUtils { /** * 百度坐标系 (BD-09) 与 火星坐标系 (GCJ-02)的转换 * 即 百度 转 谷歌、高德 */ public static GeoPoint BD2GCJ(GeoPoint geoPoint) { double bd_lon = geoPoint.getLongitude(); double bd_lat = geoPoint.getLatitude(); double lon = 0.0; double lat = 0.0; double x, y, z, theta = 0.0; double x_pi = 3.14159265358979324 * 3000.0 / 180.0; x = bd_lon - 0.0065; y = bd_lat - 0.006; z = Math.sqrt((Math.pow(x, 2) + Math.pow(y, 2)) - 0.00002 * Math.sin(y * x_pi)); theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi); lon = z * Math.cos(theta); lat = z * Math.sin(theta); return new GeoPoint(lat, lon); } /** * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换 * 即谷歌、高德 转 百度 */ public static GeoPoint GCJ2BD(GeoPoint geoPoint) { double gcj_lon = geoPoint.getLongitude(); double gcj_lat = geoPoint.getLatitude(); double lon, lat = 0.0; double z, theta = 0.0; double x_pi = 3.14159265358979324 * 3000.0 / 180.0; z = Math.sqrt((Math.pow(gcj_lon, 2) + Math.pow(gcj_lat, 2)) + 0.00002 * Math.sin(gcj_lat * x_pi)); theta = Math.atan2(gcj_lat, gcj_lon) + 0.000003 * Math.cos(gcj_lon * x_pi); lon = z * Math.cos(theta) + 0.0065; lat = z * Math.sin(theta) + 0.006; return new GeoPoint(lat, lon); } /** * wgs84坐标转火星坐标 * 即真实的gps坐标转google 高德坐标 */ public static GeoPoint WGS2GCJ(GeoPoint geoPoint) { double wgs_lon = geoPoint.getLongitude(); double wgs_lat = geoPoint.getLatitude(); double lon, lat = 0.0; double earthR = 6378245.0; double ee = 0.00669342162296594323; double dLat, dLon, x, y, radLat, magic, sqrtMagic = 0.0; //坐标在国外 if (wgs_lon lt; 72.004 || wgs_lon gt; 137.8374 || wgs_lat lt; 0.8293 || wgs_lat gt; 55.8271) { lon = wgs_lon; lat = wgs_lat; return new GeoPoint(lat, lon); } else { x = wgs_lon - 105.0; y = wgs_lat - 35.0; dLat = -100.0 +