Does Terrain Picking Work in 1.4.0?

[jscWaveLink]

I'd like to get the coordinates of the terrain when the user clicks the right mouse button. I modified the ClickAndGoSelectListener, but it seems to not get called for mouse clicks on the terrain. Is there something that I'm missing? Thanks for your help.

[tag]

You can get the current cursor position either by calling WorldWindow.getCurrentPosition() or by listening for Select events.

[jscWaveLink]

It seems that when listening for select events, the listener doesn't get called when the terrain is picked. I've tried adding a MouseAdapter to the AppPanel (e.g. in the ApplicationTemplate example), but that listener doesn't get called either. The WorldWindow doesn't accept a MouseListener and a PositionListener doesn't identify mouse clicks.

My idea is to have a listener get called on a mouse click. If it is a RIGHT_CLICK, then the code below should print out the coordinates. My problem is that the listener never gets called.

PickedObjectList pickedObjects = this.wwd.getObjectsAtCurrentPosition();

if (pickedObjects != null && pickedObjects.getTopPickedObject() != null)
{
   if (pickedObjects.getTopPickedObject().isTerrain())
  {
      System.out.println("was on Terrain");
      Position targetPos = pickedObjects.getTopPickedObject().getPosition();
      System.out.println("Lat "+targetPos.getLatitude().getDegrees()+
                                "Lon "+targetPos.getLongitude().getDegrees());
   }
}

Thanks for the hint.

[tag]

See the TerrainIntersections example. Also search for uses of WorldWindow.getCurrentPosition(). There are several examples that use it.

[jscWaveLink]

Ok, solved this one. When adding the MouseListener, one must add it to the WorldWindow, even though that class isn't a subclass of Component. The object really is a WorldWindowGLCanvas which is an AWT Component. Added the cast...

((Component) this.wwd).addMouseListener(new TerrainSelector( this.wwd ));

and it works swimmingly. Thanks.

[pabercrombie]

You need to add the mouse listener to the World Wind InputHandler. This is how I usually capture clicks on terrain:

final WorldWindow wwd = ...
wwd.getInputHandler().addMouseListener(new MouseAdapter()
    {
        @Override
        public void mouseClicked(MouseEvent e)
        {
            System.out.println(wwd.getCurrentPosition());
            e.consume(); // Prevents globe moving in response to click
        }
    });