include/rays/point.h in rays-0.1.7 vs include/rays/point.h in rays-0.1.8

@@ -9,41 +9,67 @@
 
 namespace Rays
 {
 
 
-	struct Point
+	struct Coord2
 	{
 
 		union
 		{
+			struct {coord x, y;};
+			coord array[2];
+		};
+
+		Coord2& reset (coord value = 0);
+
+		Coord2& reset (coord x, coord y);
+
+		      coord& operator [] (size_t index);
+
+		const coord& operator [] (size_t index) const;
+
+	};// Coord2
+
+
+	struct Coord3
+	{
+
+		union
+		{
 			struct {coord x, y, z;};
 			coord array[3];
 		};
 
+		Coord3& reset (coord value = 0);
+
+		Coord3& reset (coord x, coord y, coord z = 0);
+
+		      coord& operator [] (size_t index);
+
+		const coord& operator [] (size_t index) const;
+
+	};// Coord3
+
+
+	struct Point : public Coord3
+	{
+
 		Point (coord value = 0);
 
 		Point (coord x, coord y, coord z = 0);
 
 		Point dup () const;
 
-		Point& reset (coord value = 0);
-
-		Point& reset (coord x, coord y, coord z = 0);
-
 		Point& move_to (coord x, coord y, coord z = 0);
 
 		Point& move_to (const Point& point);
 
 		Point& move_by (coord x, coord y, coord z = 0);
 
 		Point& move_by (const Point& point);
 
 		String inspect () const;
-
-		      coord& operator [] (size_t index);
-
-		const coord& operator [] (size_t index) const;
 
 		Point operator - () const;
 
 		Point& operator += (const Point& rhs);