/**
* Asks the MapQuest API to generate the map-image url.
*
* @return
*/
public URL getTileUrl() {
try {
int scale = (int) MQSource.scaleList[zoomLevel.getZoomLevel()];
// the map is generated by the center coordinate
double lon = getCenterLon(scale);
double lat = getCenterLat(scale);
MQAPIWrapper apiWrapper = mqSource.getApiWrapper();
String mapImageUrl =
apiWrapper.getUrl(scale, lon, lat, MQSource.TILESIZE_WIDTH, MQSource.TILESIZE_HEIGHT);
return new URL(null, mapImageUrl, CorePlugin.RELAXED_HANDLER);
} catch (Exception e) {
WMTPlugin.log(
"[MQTile] Could not create the url for tile (Zoom: "
+ zoomLevel.getZoomLevel()
+ //$NON-NLS-1$
", X: "
+ getX()
+ ", "
+ getY(),
e); //$NON-NLS-1$ //$NON-NLS-2$
}
return null;
}
/**
* Finds out the tile which contains the coordinate at a given zoom level.
*
* <p>see:
* http://developer.mapquest.com/content/documentation/ApiDocumentation/53/JavaScript/JS_DeveloperGuide_v5.3.0.1.htm#styler-id1.17
*
* @param lat y
* @param lon x
* @param zoomLevel
* @param wmtSource
* @return
*/
public MQTile getTileFromCoordinate(
double lat, double lon, WMTZoomLevel zoomLevel, WMTSource wmtSource) {
// normalize latitude and longitude
lat = WMTTileFactory.normalizeDegreeValue(lat, 90);
lon = WMTTileFactory.normalizeDegreeValue(lon, 180);
double y =
(lat + 90.0)
* (MQSource.PIXELSPERLATDEGREE / MQSource.scaleList[zoomLevel.getZoomLevel()]);
int row = (int) (y / MQSource.TILESIZE_HEIGHT);
double x =
(lon + 180.0)
* (MQSource.PIXELSPERLNGDEGREE / MQSource.scaleList[zoomLevel.getZoomLevel()]);
int col = (int) (x / MQSource.TILESIZE_WIDTH);
WMTPlugin.debug(
"[MQTile.getTileFromCoordinate] "
+ zoomLevel.getZoomLevel()
+ //$NON-NLS-1$
"/"
+ col
+ "/"
+ row
+ " lon: "
+ lon
+ " lat: "
+ lat,
Trace.MQ); // $NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
return new MQTile(col, row, (MQZoomLevel) zoomLevel, (MQSource) wmtSource);
}
// region Build geo-resources list for service
public void buildGeoResources(WMTService service, List<IGeoResource> geoResources)
throws Exception {
geoResources.clear();
try {
List<?> tiledGroups = tiledPatterns.getChildren("TiledGroup"); // $NON-NLS-1$
buildGeoResourcesFromTiledGroups(service, geoResources, tiledGroups, ""); // $NON-NLS-1$
} catch (Exception exc) {
WMTPlugin.log("[NASASourceManager.buildGeoResources] Failed: ", exc); // $NON-NLS-1$
throw exc;
}
}
// region Build TreeItem for Wizard
public void buildWizardTree(TreeItem treeItem) {
NASAControl controlFactory = new NASAControl();
try {
List<?> tiledGroups = tiledPatterns.getChildren("TiledGroup"); // $NON-NLS-1$
WMTService service = serviceExtension.createService(NASASource.class);
List<IGeoResource> geoResources = service.emptyResourcesList(null);
geoResources.clear();
WMTWizardTreeItemData data = new WMTWizardTreeItemData(service, controlFactory);
treeItem.setData(data);
buildWizardTreeFromTiledGroups(
service, geoResources, treeItem, tiledGroups, "", controlFactory); // $NON-NLS-1$
} catch (Exception exc) {
WMTPlugin.log("[NASASourceManager.buildWizardTree] Failed: ", exc); // $NON-NLS-1$
}
}
private NASASourceManager() {
serviceExtension = new WMTServiceExtension();
try {
// open file
URL url = NASASource.class.getResource(TILESERVICE_FILE);
SAXBuilder builder = new SAXBuilder(false);
URLConnection connection = url.openConnection();
Document dom = builder.build(connection.getInputStream());
Element root = dom.getRootElement();
tiledPatterns = root.getChild("TiledPatterns"); // $NON-NLS-1$
} catch (Exception exc) {
WMTPlugin.log(
"[NASASourceManager] Loading tileservice-file failed: " + TILESERVICE_FILE,
exc); //$NON-NLS-1$
tiledPatterns = null;
}
}