protected void drawOrRequestTile(
DrawContext dc,
Tile tile,
double minDisplayDistanceSquared,
double maxDisplayDistanceSquared) {
if (!isTileVisible(dc, tile, minDisplayDistanceSquared, maxDisplayDistanceSquared)) return;
if (tile.isTileInMemoryWithData()) {
PlaceNameChunk placeNameChunk = tile.getDataChunk();
if (placeNameChunk.numEntries > 0) {
Iterable<GeographicText> renderIter = placeNameChunk.makeIterable(dc);
this.placeNameRenderer.render(dc, renderIter);
}
return;
}
// Tile's data isn't available, so request it
if (!tile.getPlaceNameService()
.isResourceAbsent(tile.getPlaceNameService().getTileNumber(tile.row, tile.column))) {
this.requestTile(dc, tile);
}
}
protected boolean isTileInMemoryWithData() {
Tile t =
(Tile) WorldWind.getMemoryCache(Tile.class.getName()).getObject(this.getFileCachePath());
return !(t == null || t.getDataChunk() == null);
}