C++怎么实现百度坐标及GCJ02与WGS84之间的转换
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这篇文章主要讲解了“C++怎么实现百度坐标及GCJ02与WGS84之间的转换”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“C++怎么实现百度坐标及GCJ02与WGS84之间的转换”吧！
实现代码
mainwindow.h
#ifndef MAINWINDOW_H#define MAINWINDOW_H#include <QMainWindow>#include <math.h>typedef struct _POSITION{ double longitude; double latitude;}POSITION;namespace Ui {class MainWindow;}class MainWindow : public QMainWindow{ Q_OBJECTpublic: explicit MainWindow(QWidget *parent = 0); ~MainWindow();private slots: double translate_lon(double lon,double lat); double translate_lat(double lon,double lat); bool outof_China(double lon,double lat); POSITION bd09togcj02(double bd_lon, double bd_lat); POSITION gcj02tobd09(double gcj_lon,double gcj_lat); POSITION gcj02towgs84(double gcj_lon,double gcj_lat); POSITION wgs84togcj02(double wgs_lon,double wgs_lat); void pushbutton1(); void pushbutton2(); void pushbutton3();private: Ui::MainWindow *ui; POSITION bd_pos; POSITION gcj_pos; POSITION wgs_pos; double x_PI = 3.14159265358979323846 * 3000.0 / 180.0; double PI = 3.1415926535897932384626; double a = 6378245.0; double ee = 0.00669342162296594323;};#endif // MAINWINDOW_Hmainwindow.cpp
#include "mainwindow.h"#include "ui_mainwindow.h"MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow){ ui->setupUi(this); setWindowTitle("Position Translate"); connect(ui->pushButton ,SIGNAL(clicked()),this,SLOT(pushbutton1())); connect(ui->pushButton_2,SIGNAL(clicked()),this,SLOT(pushbutton2())); connect(ui->pushButton_3,SIGNAL(clicked()),this,SLOT(pushbutton3()));}MainWindow::~MainWindow(){ delete ui;}bool MainWindow::outof_China(double lon, double lat){ return(lon<72.004 || lon>137.8374 || lat<0.8293 || lat >55.8271 || false);}POSITION MainWindow::bd09togcj02(double bd_lon, double bd_lat){ double x = bd_lon - 0.0065; double y = bd_lat - 0.006; double z = sqrt(x*x + y*y) - 0.00002*sin(y*x_PI); double theta = atan2(y,x) - 0.000003*cos(x*x_PI); gcj_pos.longitude = z*cos(theta); gcj_pos.latitude = z*sin(theta); return gcj_pos;}POSITION MainWindow::gcj02tobd09(double gcj_lon, double gcj_lat){ double z = sqrt(gcj_lon*gcj_lon + gcj_lat*gcj_lat) + 0.00002*sin(gcj_lat * x_PI); double theta = atan2(gcj_lat,gcj_lon) + 0.000003 * cos(gcj_lon * x_PI); bd_pos.longitude = z*cos(theta) + 0.0065; bd_pos.latitude = z*sin(theta) + 0.006; return bd_pos;}double MainWindow::translate_lon(double lon, double lat){ double ret = 300.0 + lon +2.0*lat + 0.1*lon*lon +0.1*lon*lat + 0.1*sqrt(abs(lon)); ret += (20.0 * sin(6.0*lon*PI) + 20.0*sin(2.0*lon*PI)) *2.0 / 3.0; ret += (20.0 * sin(lon*PI) + 40.0*sin(lon/3.0 *PI)) *2.0 /3.0; ret += (150 * sin(lon/12.0 *PI) + 300.0*sin(lon/30.0 * PI)) *2.0 /3.0; return ret;}double MainWindow::translate_lat(double lon, double lat){ double ret = -100 + 2.0*lon + 3.0*lat + 0.2*lat*lat + 0.1*lon*lat + 0.2*sqrt((abs(lon))); ret += (20.0 *sin(6.0*lon*PI) + 20*sin(2.0*lon*PI)) *2.0 /3.0; ret += (20.0 *sin(lat*PI) + 40.0*sin(lat/3.0*PI)) *2.0 /3.0; ret += (160.0*sin(lat/12.0*PI) + 320.0*sin(lat/30.0 *PI)) *2.0 /3.0; return ret;}POSITION MainWindow::gcj02towgs84(double gcj_lon, double gcj_lat){ if(outof_China(gcj_lon,gcj_lat)) { wgs_pos.longitude = gcj_lon; wgs_pos.latitude = gcj_lat; return wgs_pos; } else { double dlat = translate_lat(gcj_lon - 105.0,gcj_lat -35.0); double dlon = translate_lon(gcj_lon - 105.0,gcj_lat -35.0); double radlat = gcj_lat/180.0 *PI; double magic = sin(radlat); magic = 1 - ee*magic*magic; double squrtmagic = sqrt(magic); dlon = (dlon *180.0)/(a/squrtmagic*cos(radlat)*PI); dlat = (dlat *180.0)/((a*(1-ee))/(magic * squrtmagic)*PI); wgs_pos.longitude = gcj_lon - dlon; wgs_pos.latitude = gcj_lat - dlat; return wgs_pos; }}POSITION MainWindow::wgs84togcj02(double wgs_lon, double wgs_lat){ if(outof_China(wgs_lon,wgs_lat)) { gcj_pos.longitude = wgs_lon; gcj_pos.latitude = wgs_lat; return gcj_pos; } else { double dlat = translate_lat(wgs_lon - 105.0,wgs_lat - 35.0); double dlon = translate_lon(wgs_lon - 105.0,wgs_lat - 35.0); double radlat = wgs_lat/180.0 * PI; double magic = sin(radlat); magic = 1 - ee*magic*magic; double squrtmagic = sqrt(magic); dlon = (dlon *180.0)/(a/squrtmagic*cos(radlat)*PI); dlat = (dlat *180.0)/((a*(1-ee))/(magic * squrtmagic)*PI); gcj_pos.longitude = wgs_lon + dlon; gcj_pos.latitude = wgs_lat +dlat; return gcj_pos; }}void MainWindow::pushbutton1(){ double bd09_lon = ui->lineEdit_bd09lon->text().toDouble(); double bd09_lat = ui->lineEdit_bd09lat->text().toDouble(); double gcj02_lon = bd09togcj02(bd09_lon,bd09_lat).longitude; double gcj02_lat = bd09togcj02(bd09_lon,bd09_lat).latitude; double wgs84_lon = gcj02towgs84(gcj02_lon,gcj02_lat).longitude; double wgs84_lat =gcj02towgs84(gcj02_lon,gcj02_lat).latitude; ui->lineEdit_gcj02lon->setText(QString::number(gcj02_lon,'d',9)); ui->lineEdit_gcj02lat->setText(QString::number(gcj02_lat,'d',9)); ui->lineEdit_wgs84lon->setText(QString::number(wgs84_lon,'d',9)); ui->lineEdit_wgs84lat->setText(QString::number(wgs84_lat,'d',9));}void MainWindow::pushbutton2(){ double gcj02_lon = ui->lineEdit_gcj02lon->text().toDouble(); double gcj02_lat = ui->lineEdit_gcj02lat->text().toDouble(); double bd09_lon = gcj02tobd09(gcj02_lon,gcj02_lat).longitude; double bd09_lat = gcj02tobd09(gcj02_lon,gcj02_lat).latitude; double wgs84_lon = gcj02towgs84(gcj02_lon,gcj02_lat).longitude; double wgs84_lat = gcj02towgs84(gcj02_lon,gcj02_lat).latitude; ui->lineEdit_bd09lon->setText(QString::number(bd09_lon,'d',9)); ui->lineEdit_bd09lat->setText(QString::number(bd09_lat,'d',9)); ui->lineEdit_wgs84lon->setText(QString::number(wgs84_lon,'d',9)); ui->lineEdit_wgs84lat->setText(QString::number(wgs84_lat,'d',9));}void MainWindow::pushbutton3(){ double wgs84_lon = ui->lineEdit_wgs84lon->text().toDouble(); double wgs84_lat = ui->lineEdit_wgs84lat->text().toDouble(); double gcj02_lon = wgs84togcj02(wgs84_lon,wgs84_lat).longitude; double gcj02_lat = wgs84togcj02(wgs84_lon,wgs84_lat).latitude; double bd09_lon = gcj02tobd09(gcj02_lon,gcj02_lat).longitude; double bd09_lat = gcj02tobd09(gcj02_lon,gcj02_lat).latitude; ui->lineEdit_bd09lon->setText(QString::number(bd09_lon,'d',9)); ui->lineEdit_bd09lat->setText(QString::number(bd09_lat,'d',9)); ui->lineEdit_gcj02lon->setText(QString::number(gcj02_lon,'d',9)); ui->lineEdit_gcj02lat->setText(QString::number(gcj02_lat,'d',9));}算法来源于网上搜集，运行结果如下：
感谢各位的阅读，以上就是“C++怎么实现百度坐标及GCJ02与WGS84之间的转换”的内容了，经过本文的学习后，相信大家对C++怎么实现百度坐标及GCJ02与WGS84之间的转换这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是编程网，小编将为大家推送更多相关知识点的文章，欢迎关注！
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