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);
}
