Add geometry handling.

src/geometry/Rectangle.h

@@ -1,7 +1,40 @@
 #pragma once
 
+#include "AbstractGeometricItem.h"
+#include "Point.h"
 
-class Rectangle
+class Rectangle : public AbstractGeometricItem
 {
+public:
 
+    Rectangle(const Point& bottomLeft, const Point& topRight)
+        : mBottomLeft(bottomLeft),
+          mTopRight(topRight)
+    {
+
+    }
+
+    Rectangle GetBounds() const override
+    {
+        return Rectangle(mBottomLeft, mTopRight);
+    }
+
+    void Sample(Grid* grid) const override
+    {
+
+    }
+
+    double GetHeight() const
+    {
+        return mBottomLeft.GetDeltaY(mTopRight);
+    }
+
+    double GetWidth() const
+    {
+        return mBottomLeft.GetDeltaX(mTopRight);
+    }
+
+private:
+    Point mBottomLeft;
+    Point mTopRight;
 };