struct Point
{
    int x;
    int y;
    float elevation;
};
class Field
{
  private:
    int rows;
    int columns;
    float t = 1;
    Point *points;
    int* grid;
  public:
    void randomGrid(){
        for (int i=0;i<(rows+1)*(columns+1);i++){
            *(grid+i)=rand()%5+1;
        }
    }
    Field(int rows, int columns)
    {
        this->rows = rows;
        this->columns = columns;
        this->points = new Point[rows * columns];
        this->grid = new int[(rows+1)*(columns+1)];
        randomGrid();
    }
    ~Field()
    {
        delete[] points;
        delete[] grid;
    }
    void setT(int t)
    {
        this->t = t;
    }
    float interpolationX(int x, int y)
    {
        int num1 = *(grid+y*this->columns+x);
        int num2 = *(grid+y*this->columns+x+1);
        return ((1-this->t)*num1) + (this->t*num2);
    }
    float interpolationY(float x1, float x2){
        return ((1-this->t)*x1) + (this->t*x2);
    }
    float setElevation(int x, int y)
    {
        float tx = interpolationX(x, y);
        float bx = interpolationX(x, y+1);
        float tb = interpolationY(tx, bx);
        return tb;
    }
    void noiseAll()
    {
        for (int y = 0; y < rows; y++)
        {
            for (int x = 0; x < columns; x++)
            {
                (points + y * columns + x)->elevation = setElevation(x, y);
            }
        }
    }
    float getElevation(int x, int y){
        return (points+y*columns+x)->elevation;
    }
};