diff --git a/Makefile b/Makefile
index 6ea65ec..f419673 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 CXX = g++
 CXXFLAGS = -Wall -O3 -g
+SFMLFLAGS = -lsfml-system -lsfml-window -lsfml-graphics
 
 # In case you installed SFML to a non-standard path, you'll need to tell the compiler where to find the SFML headers (.hpp files):
 # g++ -c main.cpp -I<sfml-install-path>/include
@@ -9,10 +10,10 @@ CXXFLAGS = -Wall -O3 -g
 
 quickhull: main.o Quickhull.h Point.h Line.h Triangle.h Timing.o Display.o
 	# link with sfml libs; -lsfml-network -lsfml-audio currently not needed
-	$(CXX) $(CXXFLAGS) -o quickhull main.o Quickhull.h Point.h Line.h Triangle.h Timing.o Display.o -lsfml-system -lsfml-window -lsfml-graphics
+	$(CXX) $(CXXFLAGS) -o quickhull main.o Quickhull.h Point.h Line.h Triangle.h Timing.o Display.o $(SFMLFLAGS)
 
-performance: performance.cpp
-	$(CXX) $(CXXFLAGS) -o performance performance.cpp
+performance: performance.cpp Display.o
+	$(CXX) $(CXXFLAGS) -o performance Display.o performance.cpp $(SFMLFLAGS)
 
 main.o: main.cpp Timing.h
 	$(CXX) $(CXXFLAGS) -c main.cpp
diff --git a/performance.cpp b/performance.cpp
index a813f5e..dff3f97 100644
--- a/performance.cpp
+++ b/performance.cpp
@@ -1,22 +1,56 @@
 #include "Quickhull.h"
+#include "NumberGenerator.h"
+#include "Display.h"
 
 int main()
 {
-    std::list<Point> points = {
-        Point(1, 1),
-        Point(-1, -1),
-        Point(-1, 1),
-        Point(1, -1),
-        Point(0.5, 0)  // Should not be in the hull
-    };
+    std::list<Point> points = NumberGenerator::get_circle_numbers(500);
     std::list<Point> hull;
 
     Quickhull::get_hull(points, hull);
 
-    for (const Point &point : hull)
+    // create the window
+    sf::RenderWindow window(sf::VideoMode(800, 800), "k-d-tree");
+
+    sf::CircleShape normal_p(2);
+    normal_p.setFillColor(sf::Color(250, 250, 250));
+
+    sf::CircleShape hull_p(2);
+    hull_p.setFillColor(sf::Color(250, 100, 50));
+
+    // run the program as long as the window is open
+    while (window.isOpen())
     {
-        std::cout << point.x() << ", " << point.y() << std::endl;
+        // check all the window's events that were triggered since the last iteration of the loop
+        sf::Event event;
+        while (window.pollEvent(event))
+        {
+            // "close requested" event: we close the window
+            if (event.type == sf::Event::Closed)
+                window.close();
+        }
+
+        // clear the window with black color
+        window.clear(sf::Color::Black);
+
+        // Draw all points
+        for (const Point &point : points)
+        {
+            normal_p.setPosition(point.x() + 50, point.y() + 50);
+            window.draw(normal_p);
+        }
+
+        // Draw hull points
+        for (const Point &point : hull)
+        {
+            hull_p.setPosition(point.x() + 50, point.y() + 50);
+            window.draw(hull_p);
+        }
+
+        // end the current frame
+        window.display();
     }
 
+
     return 0;
 }
\ No newline at end of file