#ifndef GOOGLE_TILE_H
#define GOOGLE_TILE_H

#include <opencv2/opencv.hpp>
#include <string>
#include <vector>

struct TileInfo
{
    int x;
    int y;
    double north;
    double south;
    double east;
    double west;
};


class googleTile
{
public:
    googleTile();
    ~googleTile();

public:
    // 输出kml png
    void ExportGeoPng(cv::Mat _pan, TileInfo info, std::string dir, std::string name);

    // 输出tile
    void ExportTile(cv::Mat _pan, TileInfo info, std::string dir, std::string name);

public:

    void generateTiles();

private:
    cv::Mat image_;
    std::vector<std::pair<double, double>> geoCorners_; // 左上、右上、右下、左下
    int zoom_;


    cv::Point2f latLonToGlobal(double lat, double lon);
    std::pair<double, double> globalToLatLon(const cv::Point2f& pt);
    cv::Mat computeHomography();

};

#endif // GOOGLE_TILE_H