Adding 'shaded' box like structures in WWJ
Patrick Murris 2007-06-14 - patmurris.blogspot.com


Add this at the end of the buildShapesLayer() method of AWT1Up.java


            addFilledPolylineBox(layer, Sector.fromDegrees(0, .9, 0, 0.9), 10e3, 50e3);
            addFilledPolylineBox(layer, Sector.fromDegrees(1, 1.9, 0, 0.9), 10e3, 150e3);
            addFilledPolylineBox(layer, Sector.fromDegrees(0, 0.9, 1, 1.9), 10e3, 80e3);
            addFilledPolylineBox(layer, Sector.fromDegrees(1, 1.9, 1, 1.9), 10e3, 200e3);


and add this method just after


        private void addFilledPolylineBox(RenderableLayer layer, Sector s, double bottomAlt, double topAlt) 
        {
            Polyline filledPolyline;
            Color bottomColor = new Color(.3f, .3f, .3f);
            Color darkSideColor = new Color(.5f, .5f, .5f);
            Color lightSideColor = new Color(.7f, .7f, .7f);
            Color topColor = new Color(.6f, .6f, .6f);            
            ArrayList<Position> posList = new ArrayList<Position>();
            posList.clear();	// Bottom face
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMaxLongitude(), bottomAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMaxLongitude(), bottomAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), bottomAlt));
            filledPolyline = new Polyline(posList);
            filledPolyline.setFollowGreatCircles(false);
            filledPolyline.setFilled(true);
            filledPolyline.setColor(bottomColor);
            layer.addRenderable(filledPolyline);
            posList.clear();	// South face
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMaxLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMaxLongitude(), topAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), topAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), bottomAlt));
            filledPolyline = new Polyline(posList);
            filledPolyline.setFollowGreatCircles(false);
            filledPolyline.setFilled(true);
            filledPolyline.setColor(lightSideColor);
            layer.addRenderable(filledPolyline);
            posList.clear();	// North face
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), bottomAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMaxLongitude(), bottomAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMaxLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), bottomAlt));
            filledPolyline = new Polyline(posList);
            filledPolyline.setFollowGreatCircles(false);
            filledPolyline.setFilled(true);
            filledPolyline.setColor(darkSideColor);
            layer.addRenderable(filledPolyline);
            posList.clear();	// West face
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), bottomAlt));
            filledPolyline = new Polyline(posList);
            filledPolyline.setFollowGreatCircles(false);
            filledPolyline.setFilled(true);
            filledPolyline.setColor(darkSideColor);
            layer.addRenderable(filledPolyline);
            posList.clear();	// East face
            posList.add(new Position(s.getMaxLatitude(), s.getMaxLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMaxLongitude(), bottomAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMaxLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMaxLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMaxLongitude(), bottomAlt));
            filledPolyline = new Polyline(posList);
            filledPolyline.setFollowGreatCircles(false);
            filledPolyline.setFilled(true);
            filledPolyline.setColor(lightSideColor);
            layer.addRenderable(filledPolyline);
            posList.clear();	// Top face
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), topAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMaxLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMaxLongitude(), topAlt));
            posList.add(new Position(s.getMaxLatitude(), s.getMinLongitude(), topAlt));
            posList.add(new Position(s.getMinLatitude(), s.getMinLongitude(), topAlt));
            filledPolyline = new Polyline(posList);
            filledPolyline.setFollowGreatCircles(false);
            filledPolyline.setFilled(true);
            filledPolyline.setColor(topColor);
            layer.addRenderable(filledPolyline);        	
        }


Notes : this example uses one Sector to define the four corners of a box. A more versatile 
version would use four LatLon objects.