fix of The Rectangle class who implements the draw method to render the...

fix of The Rectangle class who implements the draw method to render the rectangle using JavaFX's GraphicsContext

src/main/java/shape/Rectangle.java

@@ -5,23 +5,35 @@ import javafx.scene.canvas.GraphicsContext;
 import javafx.scene.paint.Color;
 
 public class Rectangle implements Shape {
-    Color color;
-    Rectangle(Color color, Point2D point0, Point2D point1){
+    private Color color;
+    private Point2D point0, point1;
+
+    public Rectangle(Color color, Point2D point0, Point2D point1) {
         this.color = color;
+        this.point0 = point0;
+        this.point1 = point1;
     }
 
     @Override
     public int pointsCount() {
-        return 0;
+        return 2;  // Un rectangle a 2 points (deux coins opposés)
     }
 
     @Override
     public Point2D point(int index) {
-        return null;
+        if (index == 0) {
+            return point0;
+        } else if (index == 1) {
+            return point1;
+        }
+        throw new IndexOutOfBoundsException("Rectangle has only 2 points.");
     }
 
     @Override
     public void draw(GraphicsContext context) {
-
+        context.setStroke(color);
+        context.strokeRect(point0.getX(), point0.getY(),
+                point1.getX() - point0.getX(),
+                point1.getY() - point0.getY());
     }
 }