add super_grid

lab11/game_of_life/super_grid.h

@@ -0,0 +1,29 @@
+#ifndef SUPER_GRID_H
+#define SUPER_GRID_H
+
+#include "matrix.h"
+
+class SuperGrid {
+public:
+  static SuperGrid zeros(int rows, int cols);
+
+  int rows() const;
+  int cols() const;
+  double &operator()(int i, int j);
+
+private:
+  Matrix grid_;
+};
+
+inline SuperGrid SuperGrid::zeros(int rows, int cols)
+    : grid_(Matrix::zeros(rows + 2, cols + 2)), {}
+
+inline double &SuperGrid::operator()(int i, int j) {
+  return this->grid_(i + 1, j + 1);
+}
+
+inline int SuperGrid::rows() const { return this->grid_.rows() - 2; }
+
+inline int SuperGrid::cols() const { return this->grid_.cols() - 2; }
+
+#endif // SUPER_GRID_H