Add renderstat to get some info about rendering.

source/include/plane.h

@@ -9,6 +9,8 @@
 #ifndef DORAYME_PLANE_H
 #define DORAYME_PLANE_H
 
+#include <renderstat.h>
+
 class Plane : public Shape
 {
 private:
@@ -16,7 +18,7 @@ private:
     Tuple localNormalAt(Tuple point);
 
 public:
-    Plane() : Shape(SHAPE_PLANE) { };
+    Plane() : Shape(SHAPE_PLANE) { stats.addPlane(); };
     BoundingBox getBounds();
     bool haveFiniteBounds() { return false; };
 };