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使用Qt/C++實現(xiàn)WGS84,高德GCJ-02與百度BD-09坐標系間相互轉(zhuǎn)化

更新時間：2023年07月04日 11:38:24 作者：喵喵叫的猴

這篇文章主要為大家詳細介紹了如何使用Qt實現(xiàn)WGS84、高德GCJ-02與百度BD-09坐標系間相互轉(zhuǎn)化，文中的示例代碼講解詳細，感興趣的小伙伴可以跟隨小編一起學(xué)習(xí)一下

在做地圖相關(guān)開發(fā)時候，繞不開不同坐標系間的轉(zhuǎn)化，因此我根據(jù)查閱相關(guān)資料后將不同坐標系間的轉(zhuǎn)換封裝到一個GeoTranslate類中，該類轉(zhuǎn)換函數(shù)不僅支持Qt/C++調(diào)用，同時可在QML中直接調(diào)用，配合上QML/Map很方便，我將該類做了個Demo，方便使用者使用，效果如圖：

在QML的地圖Map中使用高德的路徑規(guī)劃的效果：

使用方法為將 GeoTranslate類添加到工程中，調(diào)用轉(zhuǎn)換函數(shù)即可

geotranslate.h：

#ifndef GEOTRANSLATE_H
#define GEOTRANSLATE_H
#include <QtMath>
#include <QObject>
#include <QGeoCoordinate>
class GeoTranslate : public QObject
{
public:
    explicit GeoTranslate(QObject *parent = nullptr);
    static constexpr double pi = 3.14159265358979323846;
    static constexpr double a = 6378245.0;
    static constexpr double ee = 0.00669342162296594323;
    Q_INVOKABLE static QGeoCoordinate wgs84ToGcj02(QGeoCoordinate coordinate);
    Q_INVOKABLE static QGeoCoordinate gcj02ToWgs84(QGeoCoordinate coordinate);
    Q_INVOKABLE static QGeoCoordinate wgs84ToGcj02(double lat,double lon);
    Q_INVOKABLE static QGeoCoordinate gcj02ToWgs84(double lat,double lon);
    Q_INVOKABLE static QGeoCoordinate gcj02ToBd09(QGeoCoordinate coordinate);
    Q_INVOKABLE static QGeoCoordinate bd09ToGcj02(QGeoCoordinate coordinate);
    Q_INVOKABLE static QGeoCoordinate gcj02ToBd09(double gg_lat, double gg_lon);
    Q_INVOKABLE static QGeoCoordinate bd09ToGcj02(double bd_lat,double bd_lon);
private:
    static double transformLat(double x,double y);
    static double transformLon(double x,double y);
    static bool outOfChina(double lat,double lon);
    static QGeoCoordinate transform(double lat,double lon);
};
#endif // GEOTRANSLATE_H

調(diào)用方法：

void Widget::on_pushButton_1_clicked()
{
    QGeoCoordinate wgs(ui->lineEditLa_1->text().toDouble(),ui->lineEditLo_1->text().toDouble());
    QGeoCoordinate gcj02 = GeoTranslate::wgs84ToGcj02(wgs);
    ui->lineEditLa_2->setText(QString::number(gcj02.latitude()));
    ui->lineEditLo_2->setText(QString::number(gcj02.longitude()));
}
void Widget::on_pushButton_2_clicked()
{
    QGeoCoordinate gcj02(ui->lineEditLa_3->text().toDouble(),ui->lineEditLo_3->text().toDouble());
    QGeoCoordinate wgs = GeoTranslate::gcj02ToWgs84(gcj02);
    ui->lineEditLa_4->setText(QString::number(wgs.latitude()));
    ui->lineEditLo_4->setText(QString::number(wgs.longitude()));
}
void Widget::on_pushButton_3_clicked()
{
    QGeoCoordinate gcj02(ui->lineEditLa_5->text().toDouble(),ui->lineEditLo_5->text().toDouble());
    QGeoCoordinate bd09 = GeoTranslate::gcj02ToBd09(gcj02);
    ui->lineEditLa_6->setText(QString::number(bd09.latitude()));
    ui->lineEditLo_6->setText(QString::number(bd09.longitude()));
}
void Widget::on_pushButton_4_clicked()
{
    QGeoCoordinate bd09(ui->lineEditLa_7->text().toDouble(),ui->lineEditLo_7->text().toDouble());
    QGeoCoordinate gcj02 = GeoTranslate::bd09ToGcj02(bd09);
    ui->lineEditLa_8->setText(QString::number(gcj02.latitude()));
    ui->lineEditLo_8->setText(QString::number(gcj02.longitude()));
}

以上就是使用Qt/C++實現(xiàn)WGS84,高德GCJ-02與百度BD-09坐標系間相互轉(zhuǎn)化的詳細內(nèi)容，更多關(guān)于Qt坐標系轉(zhuǎn)化的資料請關(guān)注腳本之家其它相關(guān)文章！

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