#ifndef GOOGLE_TILE_H
#define GOOGLE_TILE_H

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

using std::vector;
using std::string;

struct TileIndex
{
    int x;
    int y;
    int z;
};

struct TileBox
{
    double north;
    double south;
    double east;
    double west;
};

struct TileInfo
{
    TileIndex ind;
    std::string tileName;
    std::string href;//相对路径
    TileBox box;
};

const int TILE_SIZE = 256;

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

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

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

    // 计算给定分辨率最接近的瓦片等级,mp单位 米/像素
    int getZoomLevel(float mp);


private:
    TileIndex LatLonToTile(double latitude, double longitude, int zoomLevel);
    // 瓦片编号对应的信息
    TileBox GetTileBox(TileIndex ind);


    void WriteKml(vector<TileInfo> tiles,string filePath);

    int zoom_;


};

#endif // GOOGLE_TILE_H