150 lines
4.4 KiB
C++
150 lines
4.4 KiB
C++
#include "geocover.h"
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namespace core {
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geocover::geocover(QObject *parent) : QObject(parent)
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{
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}
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double geocover::transformLat(double x, double y)
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{
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double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
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+ 0.2 * sqrt(abs(x));
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ret += (20.0 * sin(6.0 * x * pi) + 20.0 * sin(2.0 * x * pi)) * 2.0 / 3.0;
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ret += (20.0 * sin(y * pi) + 40.0 * sin(y / 3.0 * pi)) * 2.0 / 3.0;
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ret += (160.0 * sin(y / 12.0 * pi) + 320 * sin(y * pi / 30.0)) * 2.0 / 3.0;
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return ret;
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}
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double geocover::transformLon(double x, double y)
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{
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double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1
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* sqrt(abs(x));
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ret += (20.0 * sin(6.0 * x * pi) + 20.0 * sin(2.0 * x * pi)) * 2.0 / 3.0;
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ret += (20.0 * sin(x * pi) + 40.0 * sin(x / 3.0 * pi)) * 2.0 / 3.0;
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ret += (150.0 * sin(x / 12.0 * pi) + 300.0 * sin(x / 30.0
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* pi)) * 2.0 / 3.0;
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return ret;
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}
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double* geocover::transform(double lat, double lon) {
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if (outOfChina(lat, lon)) {
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return new double[2]{lat,lon};
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}
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double dLat = transformLat(lon - 105.0, lat - 35.0);
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double dLon = transformLon(lon - 105.0, lat - 35.0);
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double radLat = lat / 180.0 * pi;
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double magic = sin(radLat);
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magic = 1 - ee * magic * magic;
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double sqrtMagic = sqrt(magic);
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dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
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dLon = (dLon * 180.0) / (a / sqrtMagic * cos(radLat) * pi);
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double mgLat = lat + dLat;
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double mgLon = lon + dLon;
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return new double[2]{mgLat,mgLon};
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}
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bool geocover::outOfChina(double lat, double lon)
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{
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if((lon < 72.004) || (lon > 137.8347))
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{
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return true;
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}
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if((lat < 0.8293) || (lat > 55.8271))
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{
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return true;
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}
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return false;
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}
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/**
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* 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System
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*
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* @param lat
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* @param lon
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* @return
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*/
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double* geocover::gps84_To_Gcj02(double lat, double lon) {
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if (outOfChina(lat, lon)) {
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return new double[2]{lat,lon};
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}
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double dLat = transformLat(lon - 105.0, lat - 35.0);
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double dLon = transformLon(lon - 105.0, lat - 35.0);
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double radLat = lat / 180.0 * pi;
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double magic = sin(radLat);
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magic = 1 - ee * magic * magic;
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double sqrtMagic = sqrt(magic);
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dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
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dLon = (dLon * 180.0) / (a / sqrtMagic * cos(radLat) * pi);
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double mgLat = lat + dLat;
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double mgLon = lon + dLon;
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return new double[2]{mgLat, mgLon};
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}
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/**
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* * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return
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* */
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double* geocover::gcj02_To_Gps84(double lat, double lon) {
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double *gps = transform(lat, lon);
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double lontitude = lon * 2 - gps[1];
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double latitude = lat * 2 - gps[0];
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return new double[2]{latitude, lontitude};
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}
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/**
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* 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
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*
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* @param lat
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* @param lon
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*/
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double* geocover::gcj02_To_Bd09(double lat, double lon) {
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double x = lon, y = lat;
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double z = sqrt(x * x + y * y) + 0.00002 * sin(y * x_pi);
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double theta = atan2(y, x) + 0.000003 * cos(x * x_pi);
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double tempLon = z * cos(theta) + 0.0065;
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double tempLat = z * sin(theta) + 0.006;
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return new double[2]{tempLat,tempLon};
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}
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/**
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* * 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
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* bd_lat * @param bd_lon * @return
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*/
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double* geocover::bd09_To_Gcj02(double lat, double lon) {
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double x = lon - 0.0065, y = lat - 0.006;
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double z = sqrt(x * x + y * y) - 0.00002 * sin(y * x_pi);
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double theta = atan2(y, x) - 0.000003 * cos(x * x_pi);
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double tempLon = z * cos(theta);
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double tempLat = z * sin(theta);
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return new double[2]{tempLat,tempLon};
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}
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/**将gps84转为bd09
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* @param lat
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* @param lon
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* @return
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*/
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double* geocover::gps84_To_bd09(double lat,double lon){
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double *gcj02 = gps84_To_Gcj02(lat,lon);
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double *bd09 = gcj02_To_Bd09(gcj02[0],gcj02[1]);
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return bd09;
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}
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double* geocover::bd09_To_gps84(double lat,double lon){
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double *gcj02 = bd09_To_Gcj02(lat, lon);
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double *gps84 = gcj02_To_Gps84(gcj02[0], gcj02[1]);
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//保留小数点后六位
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gps84[0] = retain6(gps84[0]);
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gps84[1] = retain6(gps84[1]);
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return gps84;
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}
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/**保留小数点后六位
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* @param num
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* @return
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*/
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double geocover::retain6(double num){
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QString result = QString::number(num,'f',8);
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return result.toDouble();
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}
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}
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