src/readData.h

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#ifndef READDATA_H
#define READDATA_H

#include "loadobj.h"
#include "glm.hpp"
#include <vector>

struct mapdata {
    int ncols;                  
    int nrows;                  
    int nelem;                  
    float xllcorner;            
    float yllcorner;            
    float cellsize;             
    float NODATA_value;         
    float max_value;            
    float min_value;            
    std::vector<float> data;    
};

class DataHandler
{
private:
    mapdata* readdata;          
    GLuint terrainBufferID;     
    GLfloat terrainScale;       

    void readDEM(const char* inputfile);
    
    void normConvCompute();

public:
    DataHandler(const char* inputfile);

    ~DataHandler();

    float* getData() { return &readdata->data[0]; }

    int getDataWidth() { return readdata->ncols; }

    int getDataHeight() { return readdata->nrows; }

    int getElem() { return readdata->nelem; }

    GLfloat getTerrainScale() { return terrainScale; }
        
    GLuint getHeightBuffer() { return terrainBufferID; }

    float getCoord(int col, int row);

    GLfloat giveHeight(GLfloat x, GLfloat z);
};

#endif // READDATA_H