WorldWind Java on a Netbeans Platform TopComponent

问题:

I'm trying to add a layer to WorldWind Java (version 1.2) situated on a Netbeans Platform TopComponent (using netbeans 7.0). The TopComponent is in Editor mode, and for WWJ I use WorldWindowGLCanvas which is the single swing component on the TopComponent and it is placed with BorderLayout.CENTER. If I add the layers using the constructor all works well, I can see the layers fine. If I add the layer using swing controls (eg a button) the layer gets added to the layer list but it is not rendered. This happens for both WMS and Renderable layer. Same process on a pure swing application works fine which leads me to believe that the rendering process in WWJ is somehow conflicting with the TopComponent painting. Any help with be greatly appreciated.

回答1:

I've set up a demo using NetBeans Platform (7.0.1) with gov.nasa.worldwind.awt.WorldWindowGLCanvas and gov.nasa.worldwindx.examples.LayerPanel

Initialization Code:

private void initComponents() {
    canvas = new WorldWindowGLCanvas();

    Model model = (Model) WorldWind.createConfigurationComponent(AVKey.MODEL_CLASS_NAME);
    canvas.setModel(model);

    layerPanel = new LayerPanel(canvas);

    setLayout(new BorderLayout());
    add(canvas, BorderLayout.CENTER);
    add(layerPanel, BorderLayout.WEST);
}
private WorldWindowGLCanvas canvas;
private LayerPanel layerPanel;

This works the same as it does running the sample as a stand alone so I would say that the problem does not lie in the NetBeans Platform. Without any code it's hard to say what's going wrong.

Note that the gov.nasa.worldwind.awt.WorldWindowGLCanvas is not a Swing component but a heavy weight component. This is irrelevant to your question but I couldn't help but point it out. The Swing component is gov.nasa.worldwind.awt.WorldWindowGLJPanel

Edit: I realize my answer is not very helpful, so to remedy that I would add a suggestion. You could try to invalidate the TopComponent and call repaint whenever you need it to render the new layer.