moved to backup
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Hannes Janetzek
parent
b8b09f9455
commit
76c3e71ae4
@ -1,266 +0,0 @@
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/*
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* Copyright 2012 Hannes Janetzek
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*
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* This program is free software: you can redistribute it and/or modify it under the
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* terms of the GNU Lesser General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.oscim.view;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.ArrayList;
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import java.util.Properties;
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import org.oscim.core.GeoPoint;
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import org.oscim.core.MapPosition;
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import org.oscim.core.MercatorProjection;
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import android.os.AsyncTask;
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import android.util.FloatMath;
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import android.util.Log;
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import android.widget.Toast;
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public class RegionLookup {
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final static String TAG = RegionLookup.class.getName();
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class BBox {
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String level, name, boundary;
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GeoPoint min, max;
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float area;
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}
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private Connection connection = null;
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private PreparedStatement prepQuery = null;
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/* package */MapView mMapView;
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/* pacakge */BBox mSelected;
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// __get_regions_around(lat double precision, lon double precision)
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// returns table (level text, boundary text, name text, xmin double precision, ymin double precision, xmax double
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// precision, ymax double precision)
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// language sql as
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// $$
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// select admin_level, boundary, name, xmin(box), ymin(box), xmax(box), ymax(box) from
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// .. (select distinct on (box) * from
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// .... (select *, st_transform(st_envelope(way),4326) box
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// ...... from planet_polygon, st_transform(st_setsrid(st_makepoint($2,$1),4326),900913) point
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// ...... where (boundary is not null) and st_contains(way, point)
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// .... )p
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// .. )p order by st_area(box)
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// $$;
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private static final String QUERY = "SELECT * from __get_regions_around(?,?)";
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public RegionLookup(MapView mapView) {
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mMapView = mapView;
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}
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boolean connect() {
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Connection conn = null;
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String dburl = "jdbc:postgresql://city.informatik.uni-bremen.de:5432/gis";
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Properties dbOpts = new Properties();
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dbOpts.setProperty("user", "osm");
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dbOpts.setProperty("password", "osm");
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dbOpts.setProperty("socketTimeout", "50");
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dbOpts.setProperty("tcpKeepAlive", "true");
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try {
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DriverManager.setLoginTimeout(20);
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Log.d(TAG, "Creating JDBC connection...");
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Class.forName("org.postgresql.Driver");
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conn = DriverManager.getConnection(dburl, dbOpts);
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connection = conn;
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prepQuery = conn.prepareStatement(QUERY);
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} catch (Exception e) {
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Log.d(TAG, "Aborted due to error:" + e);
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return false;
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}
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return true;
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}
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boolean updatePosition() {
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if (connection == null) {
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if (!connect())
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return false;
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}
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ResultSet r;
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MapPosition pos = mMapView.getMapPosition().getMapPosition();
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try {
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if (mPos == null) {
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prepQuery.setDouble(1, pos.lat);
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prepQuery.setDouble(2, pos.lon);
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} else {
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prepQuery.setDouble(1, mPos.getLatitude());
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prepQuery.setDouble(2, mPos.getLongitude());
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}
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Log.d(TAG, prepQuery.toString());
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prepQuery.execute();
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r = prepQuery.getResultSet();
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} catch (SQLException e) {
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e.printStackTrace();
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connection = null;
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return false;
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}
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ArrayList<BBox> boxes = new ArrayList<BBox>(10);
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try {
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while (r != null && r.next()) {
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BBox bbox = new BBox();
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bbox.level = r.getString(1);
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bbox.boundary = r.getString(2);
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bbox.name = r.getString(3);
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bbox.min = new GeoPoint(r.getDouble(5), r.getDouble(4));
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bbox.max = new GeoPoint(r.getDouble(7), r.getDouble(6));
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bbox.area = (float) Math.abs((bbox.max.getLatitude()
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- bbox.min.getLatitude())
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* (bbox.max.getLongitude()
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- bbox.min.getLongitude()));
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Log.d(TAG, "got:" + bbox.area
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+ " " + bbox.level + " b:" + bbox.boundary +
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" n:" + bbox.name + " " + bbox.min + " " + bbox.max);
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boxes.add(bbox);
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}
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} catch (SQLException e) {
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e.printStackTrace();
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connection = null;
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return false;
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}
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double w = (mMapView.getWidth() >> 1) / pos.scale;
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double h = (mMapView.getHeight() >> 1) / pos.scale;
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float minx = (float) MercatorProjection
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.pixelXToLongitude(pos.x - w, pos.zoomLevel);
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float maxx = (float) MercatorProjection
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.pixelXToLongitude(pos.x + w, pos.zoomLevel);
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float miny = (float) MercatorProjection
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.pixelYToLatitude(pos.y - h, pos.zoomLevel);
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float maxy = (float) MercatorProjection
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.pixelYToLatitude(pos.y + h, pos.zoomLevel);
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float area = Math.abs((maxx - minx) * (miny - maxy));
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Log.d(TAG, " BBOX " + area + " " + minx + " "
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+ miny + " " + maxx + " " + maxy);
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w = mMapView.getWidth();
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h = mMapView.getHeight();
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mSelected = null;
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if (mDirection < 0) {
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// get the next larger bbox, union with current and set view region to it.
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for (int i = 0, n = boxes.size(); i < n; i++) {
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BBox bbox = boxes.get(i);
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if (bbox.area > area || i == n - 1) {
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mSelected = bbox;
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break;
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}
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}
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} else {
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for (int i = boxes.size() - 1; i >= 0; i--) {
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BBox bbox = boxes.get(i);
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// if (bbox.area < area) {
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//
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// double clat = bbox.min.getLatitude()
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// + (bbox.max.getLatitude() - bbox.min.getLatitude()) / 2;
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double clon = Math.abs(bbox.max.getLongitude()
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- bbox.min.getLongitude());
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float zoom = (float) (-Math.log(4) * Math.log(clon / 360) + 0.25);
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// float scale = 1 + (zoom - FloatMath.floor(zoom));
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// MapPosition mapPos = new MapPosition(clat,
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// bbox.min.getLongitude() + clon / 2,
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// (byte) zoom, 1 + (zoom - FloatMath.floor(zoom)), 0);
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mSelected = bbox;
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Log.d(TAG, "jump to: " + bbox.name + " " +
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-Math.log(4) * Math.log(clon / 360) + " " + (byte) zoom);
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if ((byte) zoom > pos.zoomLevel) {
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break;
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}
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}
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}
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if (mSelected != null) {
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BBox bbox = mSelected;
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double clat = bbox.min.getLatitude()
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+ (bbox.max.getLatitude() - bbox.min.getLatitude()) / 2;
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double clon = Math.abs(bbox.max.getLongitude() - bbox.min.getLongitude());
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Log.d(TAG, "jump to: " + bbox.name + " " +
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-Math.log(4) * Math.log(clon / 360));
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float zoom = (float) (-Math.log(4) * Math.log(clon / 360) + 0.25);
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MapPosition mapPos = new MapPosition(clat,
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bbox.min.getLongitude() + clon / 2,
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(byte) zoom, 1 + (zoom - FloatMath.floor(zoom)), 0);
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mMapView.setMapCenter(mapPos);
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}
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return true;
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}
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private int mDirection;
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private GeoPoint mPos;
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public synchronized void updateRegion(int direction, GeoPoint pos) {
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mDirection = direction;
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mPos = pos;
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new AsyncTask<Object, Integer, Long>() {
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@Override
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protected Long doInBackground(Object... params) {
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RegionLookup.this.updatePosition();
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return null;
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}
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@Override
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protected void onPostExecute(Long result) {
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// Log.d(TAG, "got sth " + result);
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if (mSelected != null) {
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Toast toast = Toast.makeText(mMapView.getContext(), mSelected.name,
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Toast.LENGTH_SHORT);
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// toast.setDuration(1000);
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toast.show();
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}
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}
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}.execute(null, null, null);
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mSelected = null;
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}
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// private final Handler mHandler = new Handler() {
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// @Override
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// public void handleMessage(Message msg) {
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// Log.d(TAG, "message: " + msg.what);
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// // switch (msg.what) {
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// // handle update
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// // .....
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// // }
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// }
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// };
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}
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