protected Tile[] buildTiles(PlaceNameService placeNameService, NavigationTile navTile) {
final Angle dLat = placeNameService.getTileDelta().getLatitude();
final Angle dLon = placeNameService.getTileDelta().getLongitude();
// Determine the row and column offset from the global tiling origin for the southwest tile
// corner
int firstRow = Tile.computeRow(dLat, navTile.navSector.getMinLatitude());
int firstCol = Tile.computeColumn(dLon, navTile.navSector.getMinLongitude());
int lastRow = Tile.computeRow(dLat, navTile.navSector.getMaxLatitude().subtract(dLat));
int lastCol = Tile.computeColumn(dLon, navTile.navSector.getMaxLongitude().subtract(dLon));
int nLatTiles = lastRow - firstRow + 1;
int nLonTiles = lastCol - firstCol + 1;
Tile[] tiles = new Tile[nLatTiles * nLonTiles];
Angle p1 = Tile.computeRowLatitude(firstRow, dLat);
for (int row = 0; row <= lastRow - firstRow; row++) {
Angle p2;
p2 = p1.add(dLat);
Angle t1 = Tile.computeColumnLongitude(firstCol, dLon);
for (int col = 0; col <= lastCol - firstCol; col++) {
Angle t2;
t2 = t1.add(dLon);
// Need offset row and column to correspond to total ro/col numbering
tiles[col + row * nLonTiles] =
new Tile(placeNameService, new Sector(p1, p2, t1, t2), row + firstRow, col + firstCol);
t1 = t2;
}
p1 = p2;
}
return tiles;
}
private static MeshTile[] createTiles(LevelSet levelSet, int levelNumber, MeshCoords coords) {
Sector sector = levelSet.getSector();
Level level = levelSet.getLevel(levelNumber);
Angle dLat = level.getTileDelta().getLatitude();
Angle dLon = level.getTileDelta().getLongitude();
Angle latOrigin = levelSet.getTileOrigin().getLatitude();
Angle lonOrigin = levelSet.getTileOrigin().getLongitude();
// Determine the row and column offset from the common World Wind global tiling origin.
int firstRow = Tile.computeRow(dLat, sector.getMinLatitude(), latOrigin);
int firstCol = Tile.computeColumn(dLon, sector.getMinLongitude(), lonOrigin);
int lastRow = Tile.computeRow(dLat, sector.getMaxLatitude(), latOrigin);
int lastCol = Tile.computeColumn(dLon, sector.getMaxLongitude(), lonOrigin);
int numLatTiles = lastRow - firstRow + 1;
int numLonTiles = lastCol - firstCol + 1;
AffineTransform sectorTransform = createTransform(sector, coords);
MeshTile[] tiles = new MeshTile[numLatTiles * numLonTiles];
int index = 0;
Angle p1 = Tile.computeRowLatitude(firstRow, dLat, latOrigin);
for (int row = firstRow; row <= lastRow; row++) {
Angle p2 = p1.add(dLat);
Angle t1 = Tile.computeColumnLongitude(firstCol, dLon, lonOrigin);
for (int col = firstCol; col <= lastCol; col++) {
Angle t2 = t1.add(dLon);
Sector tileSector = new Sector(p1, p2, t1, t2);
MeshCoords tileCoords = transformSector(sectorTransform, tileSector);
tiles[index++] = new MeshTile(tileSector, level, row, col, tileCoords);
t1 = t2;
}
p1 = p2;
}
return tiles;
}
