protected ArrayList<SquareZone> createSquaresGrid(
int UTMZone,
String hemisphere,
Sector UTMZoneSector,
double minEasting,
double maxEasting,
double minNorthing,
double maxNorthing) {
ArrayList<SquareZone> squares = new ArrayList<SquareZone>();
double startEasting = Math.floor(minEasting / ONEHT) * ONEHT;
double startNorthing = Math.floor(minNorthing / ONEHT) * ONEHT;
int cols = (int) Math.ceil((maxEasting - startEasting) / ONEHT);
int rows = (int) Math.ceil((maxNorthing - startNorthing) / ONEHT);
SquareZone[][] squaresArray = new SquareZone[rows][cols];
int col = 0;
for (double easting = startEasting; easting < maxEasting; easting += ONEHT) {
int row = 0;
for (double northing = startNorthing; northing < maxNorthing; northing += ONEHT) {
SquareZone sz =
new SquareZone(UTMZone, hemisphere, UTMZoneSector, easting, northing, ONEHT);
if (sz.boundingSector != null && !sz.isOutsideGridZone()) {
squares.add(sz);
squaresArray[row][col] = sz;
}
row++;
}
col++;
}
// Keep track of neighbors
for (col = 0; col < cols; col++) {
for (int row = 0; row < rows; row++) {
SquareZone sz = squaresArray[row][col];
if (sz != null) {
sz.setNorthNeighbor(row + 1 < rows ? squaresArray[row + 1][col] : null);
sz.setEastNeighbor(col + 1 < cols ? squaresArray[row][col + 1] : null);
}
}
}
return squares;
}
