*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
-package org.altusmetrum.altoslib_7;
+package org.altusmetrum.altoslib_11;
import java.io.*;
import java.util.*;
+import java.util.concurrent.*;
import java.text.*;
import java.lang.Math;
import java.net.URL;
import java.net.URLConnection;
-public class AltosMapLoader implements AltosMapTileListener {
+public class AltosMapLoader extends Thread implements AltosMapStoreListener {
AltosMapLoaderListener listener;
double latitude, longitude;
int cur_z;
int all_types;
int cur_type;
- int radius;
+ double radius;
+ int scale;
- int tiles_per_layer;
- int tiles_loaded;
+ int tiles_loaded_layer;
+ int tiles_loaded_total;
+ int tiles_this_layer;
+ int tiles_total;
int layers_total;
int layers_loaded;
- AltosMap map;
- AltosMapCache cache;
+ private static final int MAX_LOADING = 200;
- public void do_load() {
- map.set_zoom(cur_z + AltosMap.default_zoom);
- map.set_maptype(cur_type);
- map.set_load_params(latitude, longitude, radius, this);
+ private Semaphore loading = new Semaphore(MAX_LOADING);
+
+ boolean abort;
+
+ int tile_radius(int zoom) {
+ double delta_lon = AltosMapTransform.lon_from_distance(latitude, radius);
+
+ AltosMapTransform t = new AltosMapTransform(256, 256, zoom + AltosMap.default_zoom, new AltosLatLon(latitude, longitude));
+
+ AltosPointDouble center = t.point(new AltosLatLon(latitude, longitude));
+ AltosPointDouble edge = t.point(new AltosLatLon(latitude, longitude + delta_lon));
+
+ int tile_radius = (int) Math.ceil(Math.abs(center.x - edge.x) / AltosMap.px_size);
+
+ return tile_radius;
+ }
+
+ int tiles_per_layer(int zoom) {
+ int tile_radius = tile_radius(zoom);
+ return (tile_radius * 2 + 1) * (tile_radius * 2 + 1);
}
- public int next_type(int start) {
+ private boolean do_load() {
+ tiles_this_layer = tiles_per_layer(cur_z);
+ tiles_loaded_layer = 0;
+ listener.debug("tiles_this_layer %d (zoom %d)\n", tiles_this_layer, cur_z);
+
+ int load_radius = tile_radius(cur_z);
+ int zoom = cur_z + AltosMap.default_zoom;
+ int maptype = cur_type;
+ AltosLatLon load_centre = new AltosLatLon(latitude, longitude);
+ AltosMapTransform transform = new AltosMapTransform(256, 256, zoom, load_centre);
+
+ AltosPointInt upper_left;
+ AltosPointInt lower_right;
+
+ AltosPointInt centre = AltosMap.floor(transform.point(load_centre));
+
+ upper_left = new AltosPointInt(centre.x - load_radius * AltosMap.px_size,
+ centre.y - load_radius * AltosMap.px_size);
+ lower_right = new AltosPointInt(centre.x + load_radius * AltosMap.px_size,
+ centre.y + load_radius * AltosMap.px_size);
+
+
+ for (int y = (int) upper_left.y; y <= lower_right.y; y += AltosMap.px_size) {
+ for (int x = (int) upper_left.x; x <= lower_right.x; x += AltosMap.px_size) {
+ try {
+ loading.acquire();
+ } catch (InterruptedException ie) {
+ return false;
+ }
+ AltosPointInt point = new AltosPointInt(x, y);
+ AltosLatLon ul = transform.lat_lon(point);
+ AltosLatLon center = transform.lat_lon(new AltosPointDouble(x + AltosMap.px_size/2, y + AltosMap.px_size/2));
+ AltosMapStore store = AltosMapStore.get(center, zoom, maptype, AltosMap.px_size, scale);
+ listener.debug("load state %s url %s\n", AltosMapTile.status_name(store.status()), store.url);
+ store.add_listener(this);
+ if (abort)
+ return false;
+ }
+ }
+ return true;
+ }
+
+ private int next_type(int start) {
int next_type;
for (next_type = start;
next_type <= AltosMap.maptype_terrain && (all_types & (1 << next_type)) == 0;
return next_type;
}
- public void next_load() {
+ private boolean next_load() {
int next_type = next_type(cur_type + 1);
if (next_type > AltosMap.maptype_terrain) {
if (cur_z == max_z) {
- return;
+ return false;
} else {
cur_z++;
}
next_type = next_type(0);
}
cur_type = next_type;
- do_load();
+ return true;
}
- private void start_load() {
+ public void run() {
cur_z = min_z;
int ntype = 0;
}
cur_type = next_type(0);
- tiles_per_layer = (radius * 2 + 1) * (radius * 2 + 1);
+
+ tiles_total = 0;
+ for (int z = min_z; z <= max_z; z++)
+ tiles_total += tiles_per_layer(z) * ntype;
+
layers_total = (max_z - min_z + 1) * ntype;
layers_loaded = 0;
- tiles_loaded = 0;
+ tiles_loaded_total = 0;
- listener.loader_start(layers_total * tiles_per_layer);
- do_load();
- }
+ listener.debug("total tiles %d layers %d\n", tiles_total, layers_total);
- public void load(double latitude, double longitude, int min_z, int max_z, int radius, int all_types) {
- this.latitude = latitude;
- this.longitude = longitude;
- this.min_z = min_z;
- this.max_z = max_z;
- this.radius = radius;
- this.all_types = all_types;
- start_load();
+ listener.loader_start(tiles_total);
+ do {
+ if (!do_load())
+ break;
+ } while (next_load());
+ if (abort)
+ listener.loader_done(tiles_total);
}
- public synchronized void notify_tile(AltosMapTile tile, int status) {
+ public synchronized void notify_store(AltosMapStore store, int status) {
boolean do_next = false;
- if (status == AltosMapTile.loading)
+ if (status == AltosMapTile.fetching)
return;
+ loading.release();
+
+ store.remove_listener(this);
+
if (layers_loaded >= layers_total)
return;
- ++tiles_loaded;
+ ++tiles_loaded_total;
+ ++tiles_loaded_layer;
+
+ listener.debug("AltosMapLoader.notify_store status %d total %d of %d layer %d of %d\n",
+ status, tiles_loaded_total, tiles_total, tiles_loaded_layer, tiles_this_layer);
- if (tiles_loaded == tiles_per_layer) {
- tiles_loaded = 0;
+ if (tiles_loaded_layer == tiles_this_layer) {
++layers_loaded;
- if (layers_loaded == layers_total) {
- listener.loader_done(layers_total * tiles_per_layer);
- return;
- } else {
- do_next = true;
- }
+ listener.debug("%d layers loaded\n", layers_loaded);
+ do_next = true;
}
- listener.loader_notify(layers_loaded * tiles_per_layer + tiles_loaded,
- layers_total * tiles_per_layer, tile.store.file.toString());
- if (do_next)
- next_load();
+
+ if (tiles_loaded_total == tiles_total)
+ listener.loader_done(tiles_total);
+ else
+ listener.loader_notify(tiles_loaded_total,
+ tiles_total, store.file.toString());
}
- public AltosMapCache cache() { return cache; }
+ public void abort() {
+ this.abort = true;
+ }
- public AltosMapLoader(AltosMap map, AltosMapCache cache,
- AltosMapLoaderListener listener) {
- this.map = map;
- this.cache = cache;
+ public AltosMapLoader(AltosMapLoaderListener listener,
+ double latitude, double longitude, int min_z, int max_z, double radius, int all_types, int scale) {
+ listener.debug("lat %f lon %f min_z %d max_z %d radius %f all_types %d\n",
+ latitude, longitude, min_z, max_z, radius, all_types);
this.listener = listener;
+ this.latitude = latitude;
+ this.longitude = longitude;
+ this.min_z = min_z;
+ this.max_z = max_z;
+ this.radius = radius;
+ this.all_types = all_types;
+ this.scale = scale;
+ this.abort = false;
+ start();
}
}
projects / fw / altos / blobdiff