3D

    @Override
    public void init(GLAutoDrawable drawable) {
        GL2 gl = drawable.getGL().getGL2();

        gl.glEnable(GL2.GL_DEPTH_TEST);
        gl.glDepthFunc(GL2.GL_LEQUAL);

        gl.glBlendFunc(GL2.GL_SRC_ALPHA, GL2.GL_ONE_MINUS_SRC_ALPHA);

        gl.glClearColor(0.5f, 0.5f, 1f, 1f);

        gl.glShadeModel(GL2.GL_SMOOTH);

        gl.glHint(GL2.GL_PERSPECTIVE_CORRECTION_HINT, GL2.GL_NICEST);
    }

    @Override
    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
        GL2 gl = drawable.getGL().getGL2();

        // Change viewport size
        gl.glViewport(0, 0, width, height);
    }

    @Override
    public void display(GLAutoDrawable drawable) {
        GL2 gl = drawable.getGL().getGL2();

        gl.glClear(GL2.GL_DEPTH_BUFFER_BIT | GL2.GL_COLOR_BUFFER_BIT);

        // Position camera
        gl.glMatrixMode(GL2.GL_PROJECTION);
        gl.glLoadIdentity();

        glu.gluPerspective(fov, (double) getWidth() / (double) getHeight(), 1, 1000);

        glu.gluLookAt(cameraPosition.getX(), cameraPosition.getY(), cameraPosition.getZ(), cameraTarget.getX(), cameraTarget.getY(), cameraTarget.getZ(), 0, -1, 0);

        gl.glMatrixMode(GL2.GL_MODELVIEW);
        gl.glLoadIdentity();

        // Render stuff
    }