public SimpleRenderer(int x, int y) {
    this.width = x;
    this.height = y;
    try {
      Display.setDisplayMode(new DisplayMode(x, y));
      Display.setTitle("Crowd Simulation");
      Display.create();
      Display.setVSyncEnabled(true);
    } catch (LWJGLException e) {
      e.printStackTrace();
    }

    Random r = new Random();

    System s = new System(this.width, this.height - 2, 0.0f, 1.0f);
    for (int i = 0; i < 1200; i++) {

      int xX = r.nextInt(this.width);
      int yY = r.nextInt(this.height);
      int oldX = xX; // + r.nextInt(1) ;
      int oldY = yY; // + r.nextInt(2) + 1;

      double size = r.nextGaussian() * 1.2 + 16;
      addPoint(
          s,
          xX,
          yY,
          oldX,
          oldY,
          (float) size, // r.nextFloat() * 20 + 10,
          1,
          i > 600 ? 0 : 1,
          1,
          i > 600 ? -0.9 : 0.9); // r.nextFloat(), r.nextFloat(), r.nextFloat());

      // addPoint(s, xX, yY, oldX, oldY, (float)size,//r.nextFloat() * 20 + 10,
      //		r.nextFloat(), r.nextFloat(), r.nextFloat(),i>400 ?-r.nextFloat():r.nextFloat());

    }

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(0, x, y, 0, 1, -1);
    glMatrixMode(GL_MODELVIEW);

    boolean isPressed = false;
    while (!Display.isCloseRequested()) // rendering
    {

      glClear(GL_COLOR_BUFFER_BIT);
      // glClearColor(1.0f,1.0f,1.0f,1.0f);
      if (Mouse.isButtonDown(0)) {

        // isPressed = true;
        /*int xX = Mouse.getX();
        int yY = this.height - Mouse.getY();

        int oldX = xX;// + r.nextInt(4) - 2;
        int oldY = yY;
        double size = r.nextGaussian()*1.2 +14;
        addPoint(s, xX, yY, oldX, oldY,(float)size,// r.nextFloat() * 20 + 10,
        		r.nextFloat(), r.nextFloat(), r.nextFloat(),30);
        */
        s.setDestroying(true);
      }

      if (Mouse.isButtonDown(1)) {

        for (int i = -150; i < 150; i += 10) {

          int xX = Mouse.getX();
          int yY = this.height - Mouse.getY();
          s.applyDirerction(s.searchPoint(xX, yY + i), 10);
        }
      }

      // java.lang.System.out.println("Number of objects: " +s.getListOfPoints().size() +"
      // Destroying? "+ s.isDestroying());
      s.step(3);

      int xX = Mouse.getX();
      int yY = this.height - Mouse.getY();

      for (int i = -150; i < 150; i += 10) {
        Point k = s.searchPoint(xX, yY + i);
        if (k != null) {
          glColor3f(0.0f, 0.0f, 0.0f);
          Point.DrawCircle(k.getX(), k.getY(), k.getRadius() - 2, 20);
        }
      }

      Display.update();
      Display.sync(30);
    }

    Display.destroy();
  }