/**
* Get the four coordinates that represent the bounding box which includes all the layers
* indicated for a WMTS Server
*
* @param urlServer Url of the WMTS server to connect and get the data
* @param crs CRS of the bounding box
* @param layers List of layers to include in the bounding box calculated
* @return A list of coordinates that represents the bounding box calculated (minX, minY, maxX,
* maxY). null if haven't valid bounding box
*/
private List<String> getWMTSLayersBoundingBox(String urlServer, String crs, String layerId) {
List<String> boundingBox = new ArrayList<String>();
WMTSBoundingBox bBox = null;
String[] crsSplit = crs.split(":");
String regExpCrs =
"(.*)(:?)"
.concat(crsSplit[0])
.concat("((:)(.*)(:)")
.concat(crsSplit[1])
.concat("|(:)")
.concat(crsSplit[1])
.concat(")");
try {
// get WMTS manager
WMTSOGCManager wmtsMan = WMTSOGCLocator.getManager();
WMTSClient wmtsClient = wmtsMan.createWMTSClient(urlServer);
wmtsClient.connect(true, null);
if (StringUtils.isNotEmpty(layerId)) {
WMTSLayer layer = getLayerWMTSById(wmtsClient, layerId);
if (layer != null) {
// TODO
// Need a list of bounding box of the layer
// to calculate which is the most appropiate
// WMTSBoundingBox bBox = layer.getBBox();
List<WMTSTileMatrixSetLink> tileMatrixSetLink = layer.getTileMatrixSetLink();
Iterator<WMTSTileMatrixSetLink> itTileMatrix = tileMatrixSetLink.iterator();
while (itTileMatrix.hasNext()) {
WMTSTileMatrixSetLink wmtsTileMatrixSetLink = itTileMatrix.next();
WMTSTileMatrixSet tileMatrixSet = wmtsTileMatrixSetLink.getTileMatrixSet();
String supportedCRS = tileMatrixSet.getSupportedCRS();
if (supportedCRS.equals(crs) || supportedCRS.matches(regExpCrs)) {
bBox = tileMatrixSet.getBoundingBox();
break;
}
}
if (bBox != null) {
double[] lowerCorner = bBox.getLowerCorner();
double[] upperCorner = bBox.getUpperCorner();
boundingBox.add(String.valueOf(lowerCorner[0]));
boundingBox.add(String.valueOf(lowerCorner[1]));
boundingBox.add(String.valueOf(upperCorner[0]));
boundingBox.add(String.valueOf(upperCorner[1]));
}
}
}
} catch (Exception exc) {
logger.error("Exception on getWMTSLayersBoundingBox", exc);
throw new ServerGeoException();
}
return boundingBox;
}
