public Airspace createAirspace(WorldWindow wwd, boolean fitShapeToViewport) {
Polygon poly = new Polygon();
poly.setAttributes(getDefaultAttributes());
poly.setValue(AVKey.DISPLAY_NAME, getNextName(toString()));
poly.setAltitudes(0.0, 0.0);
poly.setTerrainConforming(true, false);
this.initializePolygon(wwd, poly, fitShapeToViewport);
return poly;
}
protected void initializePolygon(WorldWindow wwd, Polygon polygon, boolean fitShapeToViewport) {
// Creates a rectangle in the center of the viewport. Attempts to guess at a reasonable size
// and height.
Position position = ShapeUtils.getNewShapePosition(wwd);
Angle heading = ShapeUtils.getNewShapeHeading(wwd, true);
double sizeInMeters =
fitShapeToViewport ? ShapeUtils.getViewportScaleFactor(wwd) : DEFAULT_SHAPE_SIZE_METERS;
java.util.List<LatLon> locations =
ShapeUtils.createSquareInViewport(wwd, position, heading, sizeInMeters);
double maxElevation = -Double.MAX_VALUE;
Globe globe = wwd.getModel().getGlobe();
for (LatLon ll : locations) {
double e = globe.getElevation(ll.getLatitude(), ll.getLongitude());
if (e > maxElevation) maxElevation = e;
}
polygon.setAltitudes(0.0, maxElevation + sizeInMeters);
polygon.setTerrainConforming(true, false);
polygon.setLocations(locations);
}