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;
}
static Angle computeColumnLongitude(int column, Angle delta) {
if (delta == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return Angle.fromDegrees(-180 + delta.getDegrees() * column);
}
static Angle computeRowLatitude(int row, Angle delta) {
if (delta == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return Angle.fromDegrees(-90d + delta.getDegrees() * row);
}
static int computeColumn(Angle delta, Angle longitude) {
if (delta == null || longitude == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return (int) ((longitude.getDegrees() + 180d) / delta.getDegrees());
}
protected static Angle clampAngle(Angle a, Angle min, Angle max) {
double degrees = a.degrees;
double minDegrees = min.degrees;
double maxDegrees = max.degrees;
return Angle.fromDegrees(
degrees < minDegrees ? minDegrees : (degrees > maxDegrees ? maxDegrees : degrees));
}
/**
* Format an angle according to the current angle format. Prepend a specified label.
*
* @param label a label to prepend to the formatted angle. May be null to indicate no label.
* @param angle the angle to format.
* @return a string containing the formatted angle prepended with the specified label.
* @throws IllegalArgumentException if the angle is null.
*/
public String angle(String label, Angle angle) {
if (angle == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
String s;
if (this.isShowDMS()) s = String.format("%s", angle.toFormattedDMSString()).trim();
else s = String.format(this.getFormat(FORMAT_DECIMAL_DEGREES), angle.degrees).trim();
return label != null ? label + " " + s : s;
}
/**
* @author Paul Collins
* @version $Id: PlaceNameLayer.java 13201 2010-03-12 01:59:03Z tgaskins $
*/
public class PlaceNameLayer extends AbstractLayer implements BulkRetrievable {
private final PlaceNameServiceSet placeNameServiceSet;
private PriorityBlockingQueue<Runnable> requestQ = new PriorityBlockingQueue<Runnable>(64);
private Vec4 referencePoint;
protected final Object fileLock = new Object();
private boolean cullNames = false;
protected static final double LEVEL_A = 0x1 << 25;
protected static final double LEVEL_B = 0x1 << 24;
protected static final double LEVEL_C = 0x1 << 23;
protected static final double LEVEL_D = 0x1 << 22;
protected static final double LEVEL_E = 0x1 << 21;
protected static final double LEVEL_F = 0x1 << 20;
protected static final double LEVEL_G = 0x1 << 19;
protected static final double LEVEL_H = 0x1 << 18;
protected static final double LEVEL_I = 0x1 << 17;
protected static final double LEVEL_J = 0x1 << 16;
protected static final double LEVEL_K = 0x1 << 15;
protected static final double LEVEL_L = 0x1 << 14;
protected static final double LEVEL_M = 0x1 << 13;
protected static final double LEVEL_N = 0x1 << 12;
protected static final double LEVEL_O = 0x1 << 11;
protected static final double LEVEL_P = 0x1 << 10;
protected static final LatLon GRID_1x1 =
new LatLon(Angle.fromDegrees(180d), Angle.fromDegrees(360d));
protected static final LatLon GRID_4x8 =
new LatLon(Angle.fromDegrees(45d), Angle.fromDegrees(45d));
protected static final LatLon GRID_8x16 =
new LatLon(Angle.fromDegrees(22.5d), Angle.fromDegrees(22.5d));
protected static final LatLon GRID_16x32 =
new LatLon(Angle.fromDegrees(11.25d), Angle.fromDegrees(11.25d));
protected static final LatLon GRID_36x72 =
new LatLon(Angle.fromDegrees(5d), Angle.fromDegrees(5d));
protected static final LatLon GRID_72x144 =
new LatLon(Angle.fromDegrees(2.5d), Angle.fromDegrees(2.5d));
protected static final LatLon GRID_144x288 =
new LatLon(Angle.fromDegrees(1.25d), Angle.fromDegrees(1.25d));
protected static final LatLon GRID_288x576 =
new LatLon(Angle.fromDegrees(0.625d), Angle.fromDegrees(0.625d));
protected List<NavigationTile> navTiles = new ArrayList<NavigationTile>();
// top navigation tiles for each service
/**
* @param placeNameServiceSet the set of PlaceNameService objects that PlaceNameLayer will render.
* @throws IllegalArgumentException if {@link
* gov.nasa.worldwind.layers.placename.PlaceNameServiceSet} is null
*/
public PlaceNameLayer(PlaceNameServiceSet placeNameServiceSet) {
if (placeNameServiceSet == null) {
String message = Logging.getMessage("nullValue.PlaceNameServiceSetIsNull");
Logging.logger().fine(message);
throw new IllegalArgumentException(message);
}
//
this.placeNameServiceSet = placeNameServiceSet.deepCopy();
for (int i = 0; i < this.placeNameServiceSet.getServiceCount(); i++) {
// todo do this for long as well and pick min
int calc1 =
(int)
(PlaceNameService.TILING_SECTOR.getDeltaLatDegrees()
/ this.placeNameServiceSet
.getService(i)
.getTileDelta()
.getLatitude()
.getDegrees());
int numLevels = (int) Math.log(calc1);
navTiles.add(
new NavigationTile(
this.placeNameServiceSet.getService(i),
PlaceNameService.TILING_SECTOR,
numLevels,
"top"));
}
if (!WorldWind.getMemoryCacheSet().containsCache(Tile.class.getName())) {
long size = Configuration.getLongValue(AVKey.PLACENAME_LAYER_CACHE_SIZE, 2000000L);
MemoryCache cache = new BasicMemoryCache((long) (0.85 * size), size);
cache.setName("Placename Tiles");
WorldWind.getMemoryCacheSet().addCache(Tile.class.getName(), cache);
}
}
public boolean isCullNames() {
return cullNames;
}
public void setCullNames(boolean cullNames) {
this.cullNames = cullNames;
placeNameRenderer.setCullTextEnabled(cullNames);
}
public final PlaceNameServiceSet getPlaceNameServiceSet() {
return this.placeNameServiceSet;
}
private PriorityBlockingQueue<Runnable> getRequestQ() {
return this.requestQ;
}
// ============== Tile Assembly ======================= //
// ============== Tile Assembly ======================= //
// ============== Tile Assembly ======================= //
protected class NavigationTile {
String id;
protected PlaceNameService placeNameService;
public Sector navSector;
protected List<NavigationTile> subNavTiles = new ArrayList<NavigationTile>();
private List<String> tileKeys = new ArrayList<String>();
protected int level;
NavigationTile(PlaceNameService placeNameService, Sector sector, int levels, String id) {
this.placeNameService = placeNameService;
this.id = id;
this.navSector = sector;
level = levels;
}
protected void buildSubNavTiles() {
if (level > 0) {
// split sector, create a navTile for each quad
Sector[] subSectors = this.navSector.subdivide();
for (int j = 0; j < subSectors.length; j++) {
subNavTiles.add(
new NavigationTile(placeNameService, subSectors[j], level - 1, this.id + "." + j));
}
}
}
public List<NavigationTile> navTilesVisible(
DrawContext dc, double minDistSquared, double maxDistSquared) {
ArrayList<NavigationTile> navList = new ArrayList<NavigationTile>();
if (this.isNavSectorVisible(dc, minDistSquared, maxDistSquared)) {
if (this.level > 0 && !this.hasSubTiles()) this.buildSubNavTiles();
if (this.hasSubTiles()) {
for (NavigationTile nav : subNavTiles) {
navList.addAll(nav.navTilesVisible(dc, minDistSquared, maxDistSquared));
}
} else // at bottom level navigation tile
{
navList.add(this);
}
}
return navList;
}
public boolean hasSubTiles() {
return !subNavTiles.isEmpty();
}
protected boolean isNavSectorVisible(
DrawContext dc, double minDistanceSquared, double maxDistanceSquared) {
if (!navSector.intersects(dc.getVisibleSector())) return false;
View view = dc.getView();
Position eyePos = view.getEyePosition();
if (eyePos == null) return false;
// check for eyePos over globe
if (Double.isNaN(eyePos.getLatitude().getDegrees())
|| Double.isNaN(eyePos.getLongitude().getDegrees())) return false;
Angle lat =
clampAngle(eyePos.getLatitude(), navSector.getMinLatitude(), navSector.getMaxLatitude());
Angle lon =
clampAngle(
eyePos.getLongitude(), navSector.getMinLongitude(), navSector.getMaxLongitude());
Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
//noinspection RedundantIfStatement
if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;
return true;
}
public List<Tile> getTiles() {
if (tileKeys.isEmpty()) {
Tile[] tiles = buildTiles(this.placeNameService, this);
// load tileKeys
for (Tile t : tiles) {
tileKeys.add(t.getFileCachePath());
WorldWind.getMemoryCache(Tile.class.getName()).add(t.getFileCachePath(), t);
}
return Arrays.asList(tiles);
} else {
List<Tile> dataTiles = new ArrayList<Tile>();
for (String s : tileKeys) {
Tile t = (Tile) WorldWind.getMemoryCache(Tile.class.getName()).getObject(s);
if (t != null) {
dataTiles.add(t);
}
}
return dataTiles;
}
}
}
protected static class Tile implements Cacheable {
protected final PlaceNameService placeNameService;
protected final Sector sector;
protected final int row;
protected final int column;
private Integer hashInt = null;
// Computed data.
protected String fileCachePath = null;
protected double extentVerticalExaggeration = Double.MIN_VALUE;
protected double priority = Double.MAX_VALUE; // Default is minimum priority
protected PlaceNameChunk dataChunk = null;
Tile(PlaceNameService placeNameService, Sector sector, int row, int column) {
this.placeNameService = placeNameService;
this.sector = sector;
this.row = row;
this.column = column;
this.fileCachePath = this.placeNameService.createFileCachePathFromTile(this.row, this.column);
this.hashInt = this.computeHash();
}
public void setDataChunk(PlaceNameChunk chunk) {
dataChunk = chunk;
}
public PlaceNameChunk getDataChunk() {
return dataChunk;
}
public long getSizeInBytes() {
long result = 32; // references
result += this.getSector().getSizeInBytes();
if (this.getFileCachePath() != null) result += this.getFileCachePath().length();
if (dataChunk != null) {
result += dataChunk.estimatedMemorySize;
}
return result;
}
static int computeRow(Angle delta, Angle latitude) {
if (delta == null || latitude == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return (int) ((latitude.getDegrees() + 90d) / delta.getDegrees());
}
static int computeColumn(Angle delta, Angle longitude) {
if (delta == null || longitude == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return (int) ((longitude.getDegrees() + 180d) / delta.getDegrees());
}
static Angle computeRowLatitude(int row, Angle delta) {
if (delta == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return Angle.fromDegrees(-90d + delta.getDegrees() * row);
}
static Angle computeColumnLongitude(int column, Angle delta) {
if (delta == null) {
String msg = Logging.getMessage("nullValue.AngleIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return Angle.fromDegrees(-180 + delta.getDegrees() * column);
}
public Integer getHashInt() {
return hashInt;
}
int computeHash() {
return this.getFileCachePath() != null ? this.getFileCachePath().hashCode() : 0;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final Tile tile = (Tile) o;
return !(this.getFileCachePath() != null
? !this.getFileCachePath().equals(tile.getFileCachePath())
: tile.getFileCachePath() != null);
}
public String getFileCachePath() {
if (this.fileCachePath == null)
this.fileCachePath =
this.placeNameService.createFileCachePathFromTile(this.row, this.column);
return this.fileCachePath;
}
public PlaceNameService getPlaceNameService() {
return placeNameService;
}
public java.net.URL getRequestURL() throws java.net.MalformedURLException {
return this.placeNameService.createServiceURLFromSector(this.sector);
}
public Sector getSector() {
return sector;
}
public int hashCode() {
return this.hashInt;
}
protected boolean isTileInMemoryWithData() {
Tile t =
(Tile) WorldWind.getMemoryCache(Tile.class.getName()).getObject(this.getFileCachePath());
return !(t == null || t.getDataChunk() == null);
}
public double getPriority() {
return priority;
}
public void setPriority(double priority) {
this.priority = priority;
}
}
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;
}
// ============== Place Name Data Structures ======================= //
// ============== Place Name Data Structures ======================= //
// ============== Place Name Data Structures ======================= //
protected static class PlaceNameChunk implements Cacheable {
protected final PlaceNameService placeNameService;
protected final CharBuffer textArray;
protected final int[] textIndexArray;
protected final double[] latlonArray;
protected final int numEntries;
protected final long estimatedMemorySize;
protected PlaceNameChunk(
PlaceNameService service,
CharBuffer text,
int[] textIndices,
double[] positions,
int numEntries) {
this.placeNameService = service;
this.textArray = text;
this.textIndexArray = textIndices;
this.latlonArray = positions;
this.numEntries = numEntries;
this.estimatedMemorySize = this.computeEstimatedMemorySize();
}
protected long computeEstimatedMemorySize() {
long result = 0;
if (!textArray.isDirect()) result += (Character.SIZE / 8) * textArray.capacity();
result += (Integer.SIZE / 8) * textIndexArray.length;
result += (Double.SIZE / 8) * latlonArray.length;
return result;
}
protected Position getPosition(int index) {
int latlonIndex = 2 * index;
return Position.fromDegrees(latlonArray[latlonIndex], latlonArray[latlonIndex + 1], 0);
}
protected PlaceNameService getPlaceNameService() {
return this.placeNameService;
}
protected CharSequence getText(int index) {
int beginIndex = textIndexArray[index];
int endIndex = (index + 1 < numEntries) ? textIndexArray[index + 1] : textArray.length();
return this.textArray.subSequence(beginIndex, endIndex);
}
public long getSizeInBytes() {
return this.estimatedMemorySize;
}
private Iterable<GeographicText> makeIterable(DrawContext dc) {
// get dispay dist for this service for use in label annealing
double maxDisplayDistance = this.getPlaceNameService().getMaxDisplayDistance();
ArrayList<GeographicText> list = new ArrayList<GeographicText>();
for (int i = 0; i < this.numEntries; i++) {
CharSequence str = getText(i);
Position pos = getPosition(i);
GeographicText text = new UserFacingText(str, pos);
text.setFont(this.placeNameService.getFont());
text.setColor(this.placeNameService.getColor());
text.setBackgroundColor(this.placeNameService.getBackgroundColor());
text.setVisible(isNameVisible(dc, this.placeNameService, pos));
text.setPriority(maxDisplayDistance);
list.add(text);
}
return list;
}
}
// ============== Rendering ======================= //
// ============== Rendering ======================= //
// ============== Rendering ======================= //
private final GeographicTextRenderer placeNameRenderer = new GeographicTextRenderer();
@Override
protected void doRender(DrawContext dc) {
this.referencePoint = this.computeReferencePoint(dc);
int serviceCount = this.placeNameServiceSet.getServiceCount();
for (int i = 0; i < serviceCount; i++) {
PlaceNameService placeNameService = this.placeNameServiceSet.getService(i);
if (!isServiceVisible(dc, placeNameService)) continue;
double minDistSquared =
placeNameService.getMinDisplayDistance() * placeNameService.getMinDisplayDistance();
double maxDistSquared =
placeNameService.getMaxDisplayDistance() * placeNameService.getMaxDisplayDistance();
if (isSectorVisible(
dc, placeNameService.getMaskingSector(), minDistSquared, maxDistSquared)) {
ArrayList<Tile> baseTiles = new ArrayList<Tile>();
NavigationTile navTile = this.navTiles.get(i);
// drill down into tiles to find bottom level navTiles visible
List<NavigationTile> list = navTile.navTilesVisible(dc, minDistSquared, maxDistSquared);
for (NavigationTile nt : list) {
baseTiles.addAll(nt.getTiles());
}
for (Tile tile : baseTiles) {
try {
drawOrRequestTile(dc, tile, minDistSquared, maxDistSquared);
} catch (Exception e) {
Logging.logger()
.log(
Level.FINE,
Logging.getMessage("layers.PlaceNameLayer.ExceptionRenderingTile"),
e);
}
}
}
}
this.sendRequests();
this.requestQ.clear();
}
protected Vec4 computeReferencePoint(DrawContext dc) {
if (dc.getViewportCenterPosition() != null)
return dc.getGlobe().computePointFromPosition(dc.getViewportCenterPosition());
java.awt.geom.Rectangle2D viewport = dc.getView().getViewport();
int x = (int) viewport.getWidth() / 2;
for (int y = (int) (0.5 * viewport.getHeight()); y >= 0; y--) {
Position pos = dc.getView().computePositionFromScreenPoint(x, y);
if (pos == null) continue;
return dc.getGlobe().computePointFromPosition(pos.getLatitude(), pos.getLongitude(), 0d);
}
return null;
}
protected Vec4 getReferencePoint() {
return this.referencePoint;
}
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 static boolean isServiceVisible(DrawContext dc, PlaceNameService placeNameService) {
//noinspection SimplifiableIfStatement
if (!placeNameService.isEnabled()) return false;
return (dc.getVisibleSector() != null)
&& placeNameService.getMaskingSector().intersects(dc.getVisibleSector());
//
// return
// placeNameService.getExtent(dc).intersects(dc.getView().getFrustumInModelCoordinates());
}
protected static boolean isSectorVisible(
DrawContext dc, Sector sector, double minDistanceSquared, double maxDistanceSquared) {
View view = dc.getView();
Position eyePos = view.getEyePosition();
if (eyePos == null) return false;
Angle lat = clampAngle(eyePos.getLatitude(), sector.getMinLatitude(), sector.getMaxLatitude());
Angle lon =
clampAngle(eyePos.getLongitude(), sector.getMinLongitude(), sector.getMaxLongitude());
Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
//noinspection RedundantIfStatement
if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;
return true;
}
protected static boolean isTileVisible(
DrawContext dc, Tile tile, double minDistanceSquared, double maxDistanceSquared) {
if (!tile.getSector().intersects(dc.getVisibleSector())) return false;
View view = dc.getView();
Position eyePos = view.getEyePosition();
if (eyePos == null) return false;
Angle lat =
clampAngle(
eyePos.getLatitude(),
tile.getSector().getMinLatitude(),
tile.getSector().getMaxLatitude());
Angle lon =
clampAngle(
eyePos.getLongitude(),
tile.getSector().getMinLongitude(),
tile.getSector().getMaxLongitude());
Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
//noinspection RedundantIfStatement
if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;
return true;
}
protected static boolean isNameVisible(
DrawContext dc, PlaceNameService service, Position namePosition) {
double elevation = dc.getVerticalExaggeration() * namePosition.getElevation();
Vec4 namePoint =
dc.getGlobe()
.computePointFromPosition(
namePosition.getLatitude(), namePosition.getLongitude(), elevation);
Vec4 eyeVec = dc.getView().getEyePoint();
double dist = eyeVec.distanceTo3(namePoint);
return dist >= service.getMinDisplayDistance() && dist <= service.getMaxDisplayDistance();
}
protected static Angle clampAngle(Angle a, Angle min, Angle max) {
double degrees = a.degrees;
double minDegrees = min.degrees;
double maxDegrees = max.degrees;
return Angle.fromDegrees(
degrees < minDegrees ? minDegrees : (degrees > maxDegrees ? maxDegrees : degrees));
}
// ============== Image Reading and Downloading ======================= //
// ============== Image Reading and Downloading ======================= //
// ============== Image Reading and Downloading ======================= //
protected void requestTile(DrawContext dc, Tile tile) {
Vec4 centroid = dc.getGlobe().computePointFromPosition(tile.getSector().getCentroid(), 0);
if (this.getReferencePoint() != null)
tile.setPriority(centroid.distanceTo3(this.getReferencePoint()));
RequestTask task = new RequestTask(tile, this);
this.getRequestQ().add(task);
}
protected void sendRequests() {
Runnable task = this.requestQ.poll();
while (task != null) {
if (!WorldWind.getTaskService().isFull()) {
WorldWind.getTaskService().addTask(task);
}
task = this.requestQ.poll();
}
}
protected static class RequestTask implements Runnable, Comparable<RequestTask> {
protected final PlaceNameLayer layer;
protected final Tile tile;
RequestTask(Tile tile, PlaceNameLayer layer) {
this.layer = layer;
this.tile = tile;
}
public void run() {
if (this.tile.isTileInMemoryWithData()) return;
final java.net.URL tileURL =
this.layer.getDataFileStore().findFile(tile.getFileCachePath(), false);
if (tileURL != null) {
if (this.layer.loadTile(this.tile, tileURL)) {
tile.getPlaceNameService()
.unmarkResourceAbsent(
tile.getPlaceNameService().getTileNumber(tile.row, tile.column));
this.layer.firePropertyChange(AVKey.LAYER, null, this);
return;
}
}
this.layer.downloadTile(this.tile);
}
/**
* @param that the task to compare
* @return -1 if <code>this</code> less than <code>that</code>, 1 if greater than, 0 if equal
* @throws IllegalArgumentException if <code>that</code> is null
*/
public int compareTo(RequestTask that) {
if (that == null) {
String msg = Logging.getMessage("nullValue.RequestTaskIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
return this.tile.getPriority() == that.tile.getPriority()
? 0
: this.tile.getPriority() < that.tile.getPriority() ? -1 : 1;
}
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final RequestTask that = (RequestTask) o;
// Don't include layer in comparison so that requests are shared among layers
return !(tile != null ? !tile.equals(that.tile) : that.tile != null);
}
public int hashCode() {
return (tile != null ? tile.hashCode() : 0);
}
public String toString() {
return this.tile.toString();
}
}
protected boolean loadTile(Tile tile, java.net.URL url) {
if (WWIO.isFileOutOfDate(url, this.placeNameServiceSet.getExpiryTime())) {
// The file has expired. Delete it then request download of newer.
this.getDataFileStore().removeFile(url);
String message = Logging.getMessage("generic.DataFileExpired", url);
Logging.logger().fine(message);
return false;
}
PlaceNameChunk tileData;
synchronized (this.fileLock) {
tileData = readTileData(tile, url);
}
if (tileData == null) {
// Assume that something's wrong with the file and delete it.
this.getDataFileStore().removeFile(url);
tile.getPlaceNameService()
.markResourceAbsent(tile.getPlaceNameService().getTileNumber(tile.row, tile.column));
String message = Logging.getMessage("generic.DeletedCorruptDataFile", url);
Logging.logger().fine(message);
return false;
}
tile.setDataChunk(tileData);
WorldWind.getMemoryCache(Tile.class.getName()).add(tile.getFileCachePath(), tile);
return true;
}
protected static PlaceNameChunk readTileData(Tile tile, java.net.URL url) {
java.io.InputStream is = null;
try {
String path = url.getFile();
path =
path.replaceAll(
"%20", " "); // TODO: find a better way to get a path usable by FileInputStream
java.io.FileInputStream fis = new java.io.FileInputStream(path);
java.io.BufferedInputStream buf = new java.io.BufferedInputStream(fis);
is = new java.util.zip.GZIPInputStream(buf);
GMLPlaceNameSAXHandler handler = new GMLPlaceNameSAXHandler();
javax.xml.parsers.SAXParserFactory.newInstance().newSAXParser().parse(is, handler);
return handler.createPlaceNameChunk(tile.getPlaceNameService());
} catch (Exception e) {
// todo log actual error
Logging.logger()
.log(
Level.FINE,
Logging.getMessage(
"layers.PlaceNameLayer.ExceptionAttemptingToReadFile", url.toString()),
e);
} finally {
try {
if (is != null) is.close();
} catch (java.io.IOException e) {
Logging.logger()
.log(
Level.FINE,
Logging.getMessage(
"layers.PlaceNameLayer.ExceptionAttemptingToReadFile", url.toString()),
e);
}
}
return null;
}
protected static CharBuffer newCharBuffer(int numElements) {
ByteBuffer bb = ByteBuffer.allocateDirect((Character.SIZE / 8) * numElements);
bb.order(ByteOrder.nativeOrder());
return bb.asCharBuffer();
}
protected static class GMLPlaceNameSAXHandler extends org.xml.sax.helpers.DefaultHandler {
protected static final String GML_FEATURE_MEMBER = "gml:featureMember";
protected static final String TOPP_FULL_NAME_ND = "topp:full_name_nd";
protected static final String TOPP_LATITUDE = "topp:latitude";
protected static final String TOPP_LONGITUDE = "topp:longitude";
protected final LinkedList<String> internedQNameStack = new LinkedList<String>();
protected boolean inBeginEndPair = false;
protected StringBuilder latBuffer = new StringBuilder();
protected StringBuilder lonBuffer = new StringBuilder();
StringBuilder textArray = new StringBuilder();
int[] textIndexArray = new int[16];
double[] latlonArray = new double[16];
int numEntries = 0;
protected GMLPlaceNameSAXHandler() {}
protected PlaceNameChunk createPlaceNameChunk(PlaceNameService service) {
int numChars = this.textArray.length();
CharBuffer textBuffer = newCharBuffer(numChars);
textBuffer.put(this.textArray.toString());
textBuffer.rewind();
return new PlaceNameChunk(
service, textBuffer, this.textIndexArray, this.latlonArray, this.numEntries);
}
protected void beginEntry() {
int textIndex = this.textArray.length();
this.textIndexArray = append(this.textIndexArray, this.numEntries, textIndex);
this.inBeginEndPair = true;
}
protected void endEntry() {
double lat = this.parseDouble(this.latBuffer);
double lon = this.parseDouble(this.lonBuffer);
int numLatLon = 2 * this.numEntries;
this.latlonArray = this.append(this.latlonArray, numLatLon, lat);
numLatLon++;
this.latlonArray = this.append(this.latlonArray, numLatLon, lon);
this.latBuffer.delete(0, this.latBuffer.length());
this.lonBuffer.delete(0, this.lonBuffer.length());
this.inBeginEndPair = false;
this.numEntries++;
}
protected double parseDouble(StringBuilder sb) {
double value = 0;
try {
value = Double.parseDouble(sb.toString());
} catch (NumberFormatException e) {
Logging.logger()
.log(
Level.FINE,
Logging.getMessage("layers.PlaceNameLayer.ExceptionAttemptingToReadFile", ""),
e);
}
return value;
}
protected int[] append(int[] array, int index, int value) {
if (index >= array.length) array = this.resizeArray(array);
array[index] = value;
return array;
}
protected int[] resizeArray(int[] oldArray) {
int newSize = 2 * oldArray.length;
int[] newArray = new int[newSize];
System.arraycopy(oldArray, 0, newArray, 0, oldArray.length);
return newArray;
}
protected double[] append(double[] array, int index, double value) {
if (index >= array.length) array = this.resizeArray(array);
array[index] = value;
return array;
}
protected double[] resizeArray(double[] oldArray) {
int newSize = 2 * oldArray.length;
double[] newArray = new double[newSize];
System.arraycopy(oldArray, 0, newArray, 0, oldArray.length);
return newArray;
}
@SuppressWarnings({"StringEquality"})
public void characters(char ch[], int start, int length) {
if (!this.inBeginEndPair) return;
// Top of QName stack is an interned string,
// so we can use pointer comparison.
String internedTopQName = this.internedQNameStack.getFirst();
StringBuilder sb = null;
if (TOPP_LATITUDE == internedTopQName) sb = this.latBuffer;
else if (TOPP_LONGITUDE == internedTopQName) sb = this.lonBuffer;
else if (TOPP_FULL_NAME_ND == internedTopQName) sb = this.textArray;
if (sb != null) sb.append(ch, start, length);
}
public void startElement(
String uri, String localName, String qName, org.xml.sax.Attributes attributes) {
// Don't validate uri, localName or attributes because they aren't used.
// Intern the qName string so we can use pointer comparison.
String internedQName = qName.intern();
//noinspection StringEquality
if (GML_FEATURE_MEMBER == internedQName) this.beginEntry();
this.internedQNameStack.addFirst(internedQName);
}
public void endElement(String uri, String localName, String qName) {
// Don't validate uri or localName because they aren't used.
// Intern the qName string so we can use pointer comparison.
String internedQName = qName.intern();
//noinspection StringEquality
if (GML_FEATURE_MEMBER == internedQName) this.endEntry();
this.internedQNameStack.removeFirst();
}
}
protected void downloadTile(final Tile tile) {
downloadTile(tile, null);
}
protected void downloadTile(final Tile tile, DownloadPostProcessor postProcessor) {
if (!this.isNetworkRetrievalEnabled()) return;
if (!WorldWind.getRetrievalService().isAvailable()) return;
java.net.URL url;
try {
url = tile.getRequestURL();
if (WorldWind.getNetworkStatus().isHostUnavailable(url)) return;
} catch (java.net.MalformedURLException e) {
Logging.logger()
.log(
java.util.logging.Level.SEVERE,
Logging.getMessage("layers.PlaceNameLayer.ExceptionCreatingUrl", tile),
e);
return;
}
Retriever retriever;
if ("http".equalsIgnoreCase(url.getProtocol()) || "https".equalsIgnoreCase(url.getProtocol())) {
if (postProcessor == null) postProcessor = new DownloadPostProcessor(this, tile);
retriever = new HTTPRetriever(url, postProcessor);
} else {
Logging.logger()
.severe(
Logging.getMessage("layers.PlaceNameLayer.UnknownRetrievalProtocol", url.toString()));
return;
}
// Apply any overridden timeouts.
Integer cto = AVListImpl.getIntegerValue(this, AVKey.URL_CONNECT_TIMEOUT);
if (cto != null && cto > 0) retriever.setConnectTimeout(cto);
Integer cro = AVListImpl.getIntegerValue(this, AVKey.URL_READ_TIMEOUT);
if (cro != null && cro > 0) retriever.setReadTimeout(cro);
Integer srl = AVListImpl.getIntegerValue(this, AVKey.RETRIEVAL_QUEUE_STALE_REQUEST_LIMIT);
if (srl != null && srl > 0) retriever.setStaleRequestLimit(srl);
WorldWind.getRetrievalService().runRetriever(retriever, tile.getPriority());
}
protected void saveBuffer(java.nio.ByteBuffer buffer, java.io.File outFile)
throws java.io.IOException {
synchronized (this.fileLock) // sychronized with read of file in RequestTask.run()
{
WWIO.saveBuffer(buffer, outFile);
}
}
protected static class DownloadPostProcessor extends AbstractRetrievalPostProcessor {
protected final PlaceNameLayer layer;
protected final Tile tile;
protected final FileStore fileStore;
public DownloadPostProcessor(PlaceNameLayer layer, Tile tile) {
// No arg check; the class has protected access.
this(layer, tile, null);
}
public DownloadPostProcessor(PlaceNameLayer layer, Tile tile, FileStore fileStore) {
// No arg check; the class has protected access.
//noinspection RedundantCast
super((AVList) layer);
this.layer = layer;
this.tile = tile;
this.fileStore = fileStore;
}
protected FileStore getFileStore() {
return this.fileStore != null ? this.fileStore : this.layer.getDataFileStore();
}
@Override
protected void markResourceAbsent() {
this.tile
.getPlaceNameService()
.markResourceAbsent(
this.tile.getPlaceNameService().getTileNumber(this.tile.row, this.tile.column));
}
@Override
protected Object getFileLock() {
return this.layer.fileLock;
}
protected File doGetOutputFile() {
return this.getFileStore().newFile(this.tile.getFileCachePath());
}
@Override
protected ByteBuffer handleSuccessfulRetrieval() {
ByteBuffer buffer = super.handleSuccessfulRetrieval();
if (buffer != null) {
// Fire a property change to denote that the layer's backing data has changed.
this.layer.firePropertyChange(AVKey.LAYER, null, this);
}
return buffer;
}
@Override
protected ByteBuffer handleXMLContent() throws IOException {
// Check for an exception report
String s = WWIO.byteBufferToString(this.getRetriever().getBuffer(), 1024, null);
if (s.contains("<ExceptionReport>")) {
// TODO: Parse the xml and include only the message text in the log message.
StringBuilder sb = new StringBuilder(this.getRetriever().getName());
sb.append("\n");
sb.append(WWIO.byteBufferToString(this.getRetriever().getBuffer(), 2048, null));
Logging.logger().warning(sb.toString());
return null;
}
this.saveBuffer();
return this.getRetriever().getBuffer();
}
}
// *** Bulk download ***
// *** Bulk download ***
// *** Bulk download ***
/**
* Start a new {@link BulkRetrievalThread} that downloads all placenames for a given sector and
* resolution to the current World Wind file cache.
*
* <p>This method creates and starts a thread to perform the download. A reference to the thread
* is returned. To create a downloader that has not been started, construct a {@link
* PlaceNameLayerBulkDownloader}.
*
* <p>Note that the target resolution must be provided in radians of latitude per texel, which is
* the resolution in meters divided by the globe radius.
*
* @param sector the sector to download data for.
* @param resolution the target resolution, provided in radians of latitude per texel.
* @param listener an optional retrieval listener. May be null.
* @return the {@link PlaceNameLayerBulkDownloader} that executes the retrieval.
* @throws IllegalArgumentException if the sector is null or the resolution is less than zero.
* @see PlaceNameLayerBulkDownloader
*/
public BulkRetrievalThread makeLocal(
Sector sector, double resolution, BulkRetrievalListener listener) {
PlaceNameLayerBulkDownloader thread =
new PlaceNameLayerBulkDownloader(
this, sector, resolution, this.getDataFileStore(), listener);
thread.setDaemon(true);
thread.start();
return thread;
}
/**
* Start a new {@link BulkRetrievalThread} that downloads all placenames for a given sector and
* resolution to a specified file store.
*
* <p>This method creates and starts a thread to perform the download. A reference to the thread
* is returned. To create a downloader that has not been started, construct a {@link
* PlaceNameLayerBulkDownloader}.
*
* <p>Note that the target resolution must be provided in radians of latitude per texel, which is
* the resolution in meters divided by the globe radius.
*
* @param sector the sector to download data for.
* @param resolution the target resolution, provided in radians of latitude per texel.
* @param fileStore the file store in which to place the downloaded elevations. If null the
* current World Wind file cache is used.
* @param listener an optional retrieval listener. May be null.
* @return the {@link PlaceNameLayerBulkDownloader} that executes the retrieval.
* @throws IllegalArgumentException if the sector is null or the resolution is less than zero.
* @see PlaceNameLayerBulkDownloader
*/
public BulkRetrievalThread makeLocal(
Sector sector, double resolution, FileStore fileStore, BulkRetrievalListener listener) {
PlaceNameLayerBulkDownloader thread =
new PlaceNameLayerBulkDownloader(this, sector, resolution, fileStore, listener);
thread.setDaemon(true);
thread.start();
return thread;
}
/**
* Get the estimated size in bytes of the placenames not in the World Wind file cache for the
* given sector and resolution.
*
* <p>Note that the target resolution must be provided in radians of latitude per texel, which is
* the resolution in meters divided by the globe radius.
*
* @param sector the sector to estimate.
* @param resolution the target resolution, provided in radians of latitude per texel.
* @return the estimated size in bytes of the missing placenames.
* @throws IllegalArgumentException if the sector is null or the resolution is less than zero.
*/
public long getEstimatedMissingDataSize(Sector sector, double resolution) {
return this.getEstimatedMissingDataSize(sector, resolution, this.getDataFileStore());
}
/**
* Get the estimated size in bytes of the placenames not in a specified file store for the given
* sector and resolution.
*
* <p>Note that the target resolution must be provided in radians of latitude per texel, which is
* the resolution in meters divided by the globe radius.
*
* @param sector the sector to estimate.
* @param resolution the target resolution, provided in radians of latitude per texel.
* @param fileStore the file store to examine. If null the current World Wind file cache is used.
* @return the estimated size in byte of the missing placenames.
* @throws IllegalArgumentException if the sector is null or the resolution is less than zero.
*/
public long getEstimatedMissingDataSize(Sector sector, double resolution, FileStore fileStore) {
try {
PlaceNameLayerBulkDownloader downloader =
new PlaceNameLayerBulkDownloader(
this,
sector,
resolution,
fileStore != null ? fileStore : this.getDataFileStore(),
null);
return downloader.getEstimatedMissingDataSize();
} catch (Exception e) {
String message =
Logging.getMessage("generic.ExceptionDuringDataSizeEstimate", this.getName());
Logging.logger().severe(message);
throw new RuntimeException(message);
}
}
}