public void loadData(Envelope envelope, int zoom) {
long timeStart = System.currentTimeMillis();
// TODO: use fromInternal(Envelope) here
MapPos minPos = projection.fromInternal(envelope.getMinX(), envelope.getMinY());
MapPos maxPos = projection.fromInternal(envelope.getMaxX(), envelope.getMaxY());
String sqlBbox = "" + minPos.x + "," + minPos.y + "," + maxPos.x + "," + maxPos.y;
// load geometries
List<Geometry> newVisibleElementsList = new LinkedList<Geometry>();
try {
Uri.Builder uri =
Uri.parse("http://kaart.maakaart.ee/poiexport/roads.php?output=gpoly&").buildUpon();
uri.appendQueryParameter("bbox", sqlBbox);
uri.appendQueryParameter("max", String.valueOf(maxObjects));
Log.debug("Vector API url:" + uri.build().toString());
JSONObject jsonData = NetUtils.getJSONFromUrl(uri.build().toString());
if (jsonData == null) {
Log.debug("No CartoDB data");
return;
}
JSONArray rows = jsonData.getJSONArray("res");
for (int i = 0; i < rows.length(); i++) {
JSONObject row = rows.getJSONObject(i);
String the_geom_encoded = row.getString("g");
String name = row.getString("n");
String type = row.getString("t");
Vector<MapPos> mapPos = GeoUtils.decompress(the_geom_encoded, 5, projection);
Geometry newObject = new Line(mapPos, new DefaultLabel(name, type), lineStyleSet, null);
newObject.attachToLayer(this);
newObject.setActiveStyle(zoom);
newVisibleElementsList.add(newObject);
}
} catch (ParseException e) {
Log.error("Error parsing data " + e.toString());
} catch (JSONException e) {
Log.error("Error parsing JSON data " + e.toString());
}
long timeEnd = System.currentTimeMillis();
Log.debug(
"OnlineVector loaded N:"
+ newVisibleElementsList.size()
+ " time ms:"
+ (timeEnd - timeStart));
setVisibleElements(newVisibleElementsList);
}
public StoredMapConfig readConfig(final FileSystem fs) {
try {
final String filename = path + "/" + CONFIG_FILENAME;
final byte[] data = fs.readFile(filename);
final String sdata = new String(data);
final String[] lines = Utils.split(sdata, "\n");
for (int i = 0; i < lines.length; i++) {
// split into at most 2 tokens
final String[] tokens = Tools.split(lines[i].trim(), '=', false, 2);
if (tokens.length == 2) {
final String name = tokens[0].trim().toLowerCase();
final String value = tokens[1].trim();
// ignore empty values
if (value.length() == 0) {
continue;
}
// ignore comments
if (name.startsWith("#")) {
continue;
}
if (name.equals("tiles_per_file")) {
final int tpf = Integer.parseInt(value);
if (tpf > 0 && (tpf & (-tpf)) == tpf) {
setTilesPerFile(tpf);
} else {
throw new IOException("Invalid tiles_per_file");
}
} else if (name.equals("hash_size")) {
final int hs = Integer.parseInt(value);
if (hs >= 1 && hs < 100) {
setHashSize(hs);
} else {
throw new IOException("Invalid hash_size");
}
} else if (name.equals("center")) {
try {
final String[] xyz = Tools.split(value.trim(), ',', false, 4);
double lat = Float.parseFloat(xyz[0].trim());
double lon = Float.parseFloat(xyz[1].trim());
int zoom = Integer.parseInt(xyz[2].trim());
Log.debug("center zoom found = " + lat + " " + lon + " " + zoom);
setCenterLocation(new WgsPoint(lon, lat), zoom);
} catch (final Exception ex) {
throw new IOException("invalid center location");
}
}
}
}
} catch (final IOException ex) {
Log.error("Error reading " + CONFIG_FILENAME);
Log.printStackTrace(ex);
return null;
}
return new StoredMapConfig(tilesPerFile, tpfx, tpfy, hashSize);
}
