Add geometry handling.

src/geometry/Point.h

@@ -1,19 +1,47 @@
 #pragma once
 
 #include <memory>
+#include <cmath>
 
 class Point
 {
-	double mX;
-	double mY;
-
 public:
 
-	Point(double x, double y);
+    Point(double x, double y);
 
-	~Point();
+    ~Point();
 
-	std::shared_ptr<Point> Create(double x, double y);
+    std::shared_ptr<Point> Create(double x, double y);
+
+    double GetX() const
+    {
+        return mX;
+    }
+
+    double GetY() const
+    {
+        return mY;
+    }
+
+    double GetDistance(const Point& point) const
+    {
+        return std::sqrt(mX*point.GetX() + mY*point.GetY());
+    }
+
+    double GetDeltaX(const Point& point) const
+    {
+        return point.GetX() - mX;
+    }
+
+    double GetDeltaY(const Point& point) const
+    {
+        return point.GetY() - mY;
+    }
+
+private:
+
+    double mX;
+    double mY;
 };
 
 using PointPtr = std::shared_ptr<Point>;