转 Google地图百度地图GPS经纬度偏移转换(JAVA) 转

阅读更多

转http://my.oschina.net/Thinkeryjgfn/blog/402565

不多说，直接代码，Java版

主要就是Google地图，百度地图，GPS经纬度偏移转换

GCJ-02转换BD-09,Google地图经纬度转百度地图经纬度
BD-09转换GCJ-02,百度转google
WGS-84 到 GCJ-02 的转换（即 GPS 加偏）

/**
 * 用于构造地图中的坐标点
 * @author lw
 * **/
public class Point {
	
	private double lat;// 纬度
	private double lng;// 经度
	
	public Point() {
	}
	
	public Point(double lng, double lat) {
		this.lng = lng;
		this.lat = lat;
	}

	@Override
	public boolean equals(Object obj) {
		if (obj instanceof Point) {
			Point bmapPoint = (Point) obj;
			return (bmapPoint.getLng() == lng && bmapPoint.getLat() == lat) ? true : false;
		} else {
			return false;
		}
	}
	
	public double getLat() {
		return lat;
	}
	public void setLat(double lat) {
		this.lat = lat;
	}
	public double getLng() {
		return lng;
	}
	public void setLng(double lng) {
		this.lng = lng;
	}
	
	@Override
	public String toString() {
		return "Point [lat=" + lat + ", lng=" + lng + "]";
	}
	
}

 

/**
 * 地图坐标转换 google,baidu,gps
 * @author lw
 * @Time 2015年4月16日18:19:16
 * 
 * */
public class CoordinateConversion {
	private static final double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
	
	private static final double pi = 3.14159265358979324;
	private static final double a = 6378245.0;
	private static final double ee = 0.00669342162296594323;
	
	/**
	 * gg_lat 纬度
	 * gg_lon 经度
	 * GCJ-02转换BD-09
	 * Google地图经纬度转百度地图经纬度
	 * */
	public static Point google_bd_encrypt(double gg_lat, double gg_lon){
		Point point=new Point();
		double x = gg_lon, y = gg_lat;
		double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
		double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi); 
		double bd_lon = z * Math.cos(theta) + 0.0065;
		double bd_lat = z * Math.sin(theta) + 0.006;
		point.setLat(bd_lat);
		point.setLng(bd_lon);
		return point;
	}
	
	/**
	 * wgLat 纬度
	 * wgLon 经度
	 * BD-09转换GCJ-02
	 * 百度转google
	 * */
	public static Point bd_google_encrypt(double bd_lat, double bd_lon){
		Point point=new Point();
	    double x = bd_lon - 0.0065, y = bd_lat - 0.006;  
	    double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi);  
	    double theta =Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi);  
	    double gg_lon = z * Math.cos(theta);  
	    double gg_lat = z * Math.sin(theta);  
	    point.setLat(gg_lat);
	    point.setLng(gg_lon);
	    return point;
	}
	
	
	
	/**
	 * wgLat 纬度
	 * wgLon 经度
	 * WGS-84 到 GCJ-02 的转换（即 GPS 加偏）
	 * */
	public static Point wgs_gcj_encrypts(double wgLat, double wgLon) {
		Point point=new Point();
		if (outOfChina(wgLat, wgLon)) {
			point.setLat(wgLat);
			point.setLng(wgLon);
			return point;
		}
		double dLat = transformLat(wgLon - 105.0, wgLat - 35.0);
		double dLon = transformLon(wgLon - 105.0, wgLat - 35.0);
		double radLat = wgLat / 180.0 * pi;
		double magic = Math.sin(radLat);
		magic = 1 - ee * magic * magic;
		double sqrtMagic = Math.sqrt(magic);
		dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
		dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
		double lat = wgLat + dLat;
		double lon = wgLon + dLon;
		point.setLat(lat);
		point.setLng(lon);
		return point;
	}
	
	
	public static void transform(double wgLat, double wgLon, double[] latlng) {
		if (outOfChina(wgLat, wgLon)) {
			latlng[0] = wgLat;
			latlng[1] = wgLon;
			return;
		}
		double dLat = transformLat(wgLon - 105.0, wgLat - 35.0);
		double dLon = transformLon(wgLon - 105.0, wgLat - 35.0);
		double radLat = wgLat / 180.0 * pi;
		double magic = Math.sin(radLat);
		magic = 1 - ee * magic * magic;
		double sqrtMagic = Math.sqrt(magic);
		dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
		dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
		latlng[0] = wgLat + dLat;
		latlng[1] = wgLon + dLon;
	}

	private static boolean outOfChina(double lat, double lon) {
		if (lon < 72.004 || lon > 137.8347)
			return true;
		if (lat < 0.8293 || lat > 55.8271)
			return true;
		return false;
	}

	private static double transformLat(double x, double y) {
		double 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 * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
		ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
		ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
		return ret;
	}

	private static double transformLon(double x, double y) {
		double 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 * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
		ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;
		ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0 * pi)) * 2.0 / 3.0;
		return ret;
	}
}

 

声明：算法不是出自本人，以整理验证通过