protected boolean areShapesIntersecting(Airspace a1, Airspace a2) {
if ((a1 instanceof SphereAirspace) && (a2 instanceof SphereAirspace)) {
SphereAirspace s1 = (SphereAirspace) a1;
SphereAirspace s2 = (SphereAirspace) a2;
LatLon location1 = s1.getLocation();
LatLon location2 = s2.getLocation();
double altitude1 = s1.getAltitudes()[0];
double altitude2 = s2.getAltitudes()[0];
boolean terrainConforming1 = s1.isTerrainConforming()[0];
boolean terrainConforming2 = s2.isTerrainConforming()[0];
// We have to compute the 3D coordinates of the sphere's center ourselves here.
Vec4 p1 =
terrainConforming1
? this.getSurfacePoint(location1, altitude1)
: this.getPoint(location1, altitude1);
Vec4 p2 =
terrainConforming2
? this.getSurfacePoint(location2, altitude2)
: this.getPoint(location2, altitude2);
double r1 = s1.getRadius();
double r2 = s2.getRadius();
double d = p1.distanceTo3(p2);
return d <= (r1 + r2);
}
return false;
}
public Airspace createAirspace(WorldWindow wwd, boolean fitShapeToViewport) {
SphereAirspace sphere = new SphereAirspace();
sphere.setAttributes(getDefaultAttributes());
sphere.setValue(AVKey.DISPLAY_NAME, getNextName(toString()));
sphere.setAltitude(0.0);
sphere.setTerrainConforming(true);
this.initializeSphere(wwd, sphere, fitShapeToViewport);
return sphere;
}
protected void initializeSphere(
WorldWindow wwd, SphereAirspace sphere, boolean fitShapeToViewport) {
// Creates a sphere in the center of the viewport. Attempts to guess at a reasonable size and
// height.
Position position = ShapeUtils.getNewShapePosition(wwd);
double sizeInMeters =
fitShapeToViewport ? ShapeUtils.getViewportScaleFactor(wwd) : DEFAULT_SHAPE_SIZE_METERS;
sphere.setLocation(new LatLon(position));
sphere.setRadius(sizeInMeters / 2.0);
}