private void adjustDateLineCrossingPoints() {
ArrayList<LatLon> corners = new ArrayList<LatLon>(Arrays.asList(sw, se, nw, ne));
if (!LatLon.locationsCrossDateLine(corners)) return;
double lonSign = 0;
for (LatLon corner : corners) {
if (Math.abs(corner.getLongitude().degrees) != 180)
lonSign = Math.signum(corner.getLongitude().degrees);
}
if (lonSign == 0) return;
if (Math.abs(sw.getLongitude().degrees) == 180
&& Math.signum(sw.getLongitude().degrees) != lonSign)
sw = new Position(sw.getLatitude(), sw.getLongitude().multiply(-1), sw.getElevation());
if (Math.abs(se.getLongitude().degrees) == 180
&& Math.signum(se.getLongitude().degrees) != lonSign)
se = new Position(se.getLatitude(), se.getLongitude().multiply(-1), se.getElevation());
if (Math.abs(nw.getLongitude().degrees) == 180
&& Math.signum(nw.getLongitude().degrees) != lonSign)
nw = new Position(nw.getLatitude(), nw.getLongitude().multiply(-1), nw.getElevation());
if (Math.abs(ne.getLongitude().degrees) == 180
&& Math.signum(ne.getLongitude().degrees) != lonSign)
ne = new Position(ne.getLatitude(), ne.getLongitude().multiply(-1), ne.getElevation());
}
protected Vec4 getSurfacePoint(LatLon latlon, double elevation) {
Vec4 point = null;
SceneController sc = this.getApp().getWwd().getSceneController();
Globe globe = this.getApp().getWwd().getModel().getGlobe();
if (sc.getTerrain() != null) {
point =
sc.getTerrain()
.getSurfacePoint(
latlon.getLatitude(),
latlon.getLongitude(),
elevation * sc.getVerticalExaggeration());
}
if (point == null) {
double e = globe.getElevation(latlon.getLatitude(), latlon.getLongitude());
point =
globe.computePointFromPosition(
latlon.getLatitude(),
latlon.getLongitude(),
(e + elevation) * sc.getVerticalExaggeration());
}
return point;
}
protected Vec4 getPoint(LatLon latlon, double elevation) {
SceneController sc = this.getApp().getWwd().getSceneController();
Globe globe = this.getApp().getWwd().getModel().getGlobe();
double e = globe.getElevation(latlon.getLatitude(), latlon.getLongitude());
return globe.computePointFromPosition(
latlon.getLatitude(),
latlon.getLongitude(),
(e + elevation) * sc.getVerticalExaggeration());
}
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);
}