chore: Add course material

397/SolutionEx32/Pixel.h

@@ -0,0 +1,43 @@
+
+#ifndef Pixel_h
+#define Pixel_h
+
+#include <functional>
+#include <iostream>
+
+class Pixel {
+  public:
+    Pixel(int x = 0, int y = 0) : x(x), y(y) {}
+
+    void print() const { std::cout << '(' << x << "," << y << ") "; }
+
+    bool operator<(const Pixel &rhs) const { return x < rhs.x; }
+
+    bool operator==(const Pixel &rhs) const { return x == rhs.x; }
+
+  private:
+    int x;
+    int y;
+
+    friend class PixelPtrCompare;
+};
+
+class PixelPtrCompare {
+  public:
+    PixelPtrCompare() : sortOnY(false) {}
+
+    void setSortOnY(bool sortY) { this->sortOnY = sortY; }
+
+    bool operator()(const Pixel *l, const Pixel *r) const {
+        if (sortOnY) {
+            return l->y < r->y;
+        } else {
+            return l->x < r->x;
+        }
+    }
+
+  private:
+    bool sortOnY;
+};
+
+#endif