Google Earth Plugin - Restricted Extent or Box

Question

In OpenLayers 2D maps there's a property called restricted extent that doesn't allow to pan or zoom outside a defined bounding box.

Can I make something similar with Google Earth Plugin in 3D?

Obviously the problem is that one can bend (incline) the view, something that cant be achieved in 2D. I have already restricted the view if thers no bend or incline in the map but that's far from being what I want..

Thanks!!

Update 1:

By now I have restricted the bbox with a handler on viewchangeend event, if the actual viewport (north, south, east, west) is outside some predefined initial values I move the view to the initial position again.

var viewchangeend = function viewchangeendhandler(){
    var actualViewport = {
        north: ge.getView().getViewportGlobeBounds().getNorth(),
        south: ge.getView().getViewportGlobeBounds().getSouth(),
        east: ge.getView().getViewportGlobeBounds().getEast(),
        west: ge.getView().getViewportGlobeBounds().getWest()
    };

    if (actualViewport.north > initialViewport.north || actualViewport.south < initialViewport.south ||
            actualViewport.east > initialViewport.east || actualViewport.west < initialViewport.west){

        var la = ge.createLookAt('');
        la.set(initialX, initialY, 0, ge.ALTITUDE_RELATIVE_TO_GROUND, 0 , 0, 50000);
        ge.getView().setAbstractView(la);
    }
}

For example in the initial case where I dont incline the view the relation north-south (north minus south) is static, but when I incline the view the relation grows and the initial viewport cannot be used to know if the actual viewport is ok.

Thanks again!

why don't you tell us what you are already doing so we can offer advice on how to extend it — lifeIsGood

lifeIsGood lifeIsGood · Accepted Answer · 2013-03-05T19:49:58

Perhaps you should consider using hitTest() instead of getViewportGlobeBounds()

See this SO Question which links to this Google Example

Have a play with the Google Example by tilting the view and see the resulting difference between the two

Google Earth Plugin - Restricted Extent or Box

1 Answers