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());
}
public SquareSector(
int UTMZone,
String hemisphere,
Sector UTMZoneSector,
double SWEasting,
double SWNorthing,
double size) {
this.UTMZone = UTMZone;
this.hemisphere = hemisphere;
this.UTMZoneSector = UTMZoneSector;
this.SWEasting = SWEasting;
this.SWNorthing = SWNorthing;
this.size = size;
// Compute corners positions
this.sw = computePosition(this.UTMZone, this.hemisphere, SWEasting, SWNorthing);
this.se = computePosition(this.UTMZone, this.hemisphere, SWEasting + size, SWNorthing);
this.nw = computePosition(this.UTMZone, this.hemisphere, SWEasting, SWNorthing + size);
this.ne = computePosition(this.UTMZone, this.hemisphere, SWEasting + size, SWNorthing + size);
this.squareCenter =
computePosition(
this.UTMZone, this.hemisphere, SWEasting + size / 2, SWNorthing + size / 2);
// Compute approximate bounding sector and center point
if (this.sw != null && this.se != null && this.nw != null && this.ne != null) {
adjustDateLineCrossingPoints();
this.boundingSector = Sector.boundingSector(Arrays.asList(sw, se, nw, ne));
if (!isInsideGridZone())
this.boundingSector = this.UTMZoneSector.intersection(this.boundingSector);
this.centroid =
this.boundingSector != null ? this.boundingSector.getCentroid() : this.squareCenter;
// this.squareCenter = this.boundingSector.getCentroid();
}
// Check whether this square is truncated by the grid zone boundary
this.isTruncated = !isInsideGridZone();
}
