TestBufferedPNode.java 文件源码

public TestBufferedPNode() {
        frame = new JFrame();
        frame.setSize( 600, 600 );
        frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

        phetPCanvas = new PhetPCanvas();
        phetPCanvas.setPanEventHandler( new PPanEventHandler() );
        phetPCanvas.setZoomEventHandler( new PZoomEventHandler() );

        frame.setContentPane( phetPCanvas );
        final ExpensiveNode expensiveNode = new ExpensiveNode();
        final BufferedPNode bufferedPNode = new BufferedPNode( phetPCanvas, expensiveNode );
//        phetPCanvas.addWorldChild( expensiveNode );
        phetPCanvas.addWorldChild( bufferedPNode );

        phetPCanvas.addKeyListener( new KeyAdapter() {
            public void keyPressed( KeyEvent e ) {
                System.out.println( "TestBufferedPNode.keyPressed" );
                phetPCanvas.getCamera().scaleView( 1.1 );
                phetPCanvas.repaint();
            }
        } );
    }