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;
}
protected List<Position> computePathPositions(
Position startPosition, Position endPosition, Angle delta) {
Angle dist = LatLon.greatCircleDistance(startPosition, endPosition);
dist = dist.multiply(0.6);
Angle azimuth = LatLon.greatCircleAzimuth(startPosition, endPosition);
LatLon locA = LatLon.greatCircleEndPosition(startPosition, azimuth.add(delta), dist);
dist = dist.multiply(0.9);
LatLon locB = LatLon.greatCircleEndPosition(startPosition, azimuth.subtract(delta), dist);
return Arrays.asList(startPosition, new Position(locA, 0), new Position(locB, 0), endPosition);
}
private void createTopLevelTiles() {
MercatorSector sector = (MercatorSector) this.levels.getSector();
Level level = levels.getFirstLevel();
Angle dLat = level.getTileDelta().getLatitude();
Angle dLon = level.getTileDelta().getLongitude();
Angle latOrigin = this.levels.getTileOrigin().getLatitude();
Angle lonOrigin = this.levels.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 nLatTiles = lastRow - firstRow + 1;
int nLonTiles = lastCol - firstCol + 1;
this.topLevels = new ArrayList<MercatorTextureTile>(nLatTiles * nLonTiles);
// Angle p1 = Tile.computeRowLatitude(firstRow, dLat);
double deltaLat = dLat.degrees / 90;
double d1 = -1.0 + deltaLat * firstRow;
for (int row = firstRow; row <= lastRow; row++) {
// Angle p2;
// p2 = p1.add(dLat);
double d2 = d1 + deltaLat;
Angle t1 = Tile.computeColumnLongitude(firstCol, dLon, lonOrigin);
for (int col = firstCol; col <= lastCol; col++) {
Angle t2;
t2 = t1.add(dLon);
this.topLevels.add(
new MercatorTextureTile(new MercatorSector(d1, d2, t1, t2), level, row, col));
t1 = t2;
}
d1 = d2;
}
}
protected Angle computeSafeRadius(DrawContext dc, SurfaceTileDrawContext sdc) {
double regionPixelSize = this.computeDrawPixelSize(dc, sdc);
Angle sectorRadius = this.computeSectorRadius(sdc.getSector());
Angle iconRadius = this.computeIconRadius(dc, regionPixelSize, sdc.getSector());
return sectorRadius.add(iconRadius);
}