* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
-package org.altusmetrum.altoslib_7;
+package org.altusmetrum.altoslib_9;
import java.io.*;
import java.util.*;
import java.net.URL;
import java.net.URLConnection;
-public class AltosMapLoader implements AltosMapTileListener {
+public class AltosMapLoader implements AltosMapTileListener, AltosMapStoreListener {
AltosMapLoaderListener listener;
double latitude, longitude;
int cur_z;
int all_types;
int cur_type;
- int radius;
+ double radius;
- 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;
+ 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 void do_load() {
- map.set_load_params(cur_z + AltosMap.default_zoom, cur_type, latitude, longitude, radius, this);
+ 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);
+
+ map.centre(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) {
+ listener.debug("Make tile at %d, %d\n", x, y);
+ 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));
+ AltosMapTile tile = map.map_interface.new_tile(this, ul, center, zoom, maptype, AltosMap.px_size);
+ tile.add_store_listener(this);
+ if (tile.store_status() != AltosMapTile.loading)
+ notify_tile(tile, tile.store_status());
+ }
+ }
}
public int next_type(int start) {
}
cur_type = next_type(0);
- tiles_per_layer = (radius * 2 + 1) * (radius * 2 + 1);
+
+ for (int z = min_z; z <= max_z; z++)
+ tiles_total += tiles_per_layer(z);
+
layers_total = (max_z - min_z + 1) * ntype;
layers_loaded = 0;
- tiles_loaded = 0;
+ tiles_loaded_total = 0;
+
+ listener.debug("total tiles %d\n", tiles_total);
- listener.loader_start(layers_total * tiles_per_layer);
+ listener.loader_start(tiles_total);
do_load();
}
- public void load(double latitude, double longitude, int min_z, int max_z, int radius, int all_types) {
+ public void load(double latitude, double longitude, int min_z, int max_z, double radius, int all_types) {
+ 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.latitude = latitude;
this.longitude = longitude;
this.min_z = min_z;
start_load();
}
- 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)
return;
if (layers_loaded >= layers_total)
return;
- ++tiles_loaded;
+ ++tiles_loaded_total;
+ ++tiles_loaded_layer;
+ listener.debug("total %d layer %d\n", tiles_loaded_total, tiles_loaded_layer);
- if (tiles_loaded == tiles_per_layer) {
- tiles_loaded = 0;
+ if (tiles_loaded_layer == tiles_this_layer) {
++layers_loaded;
+ listener.debug("%d layers loaded\n", layers_loaded);
if (layers_loaded == layers_total) {
- listener.loader_done(layers_total * tiles_per_layer);
+ listener.loader_done(tiles_total);
return;
} else {
do_next = true;
}
}
- listener.loader_notify(layers_loaded * tiles_per_layer + tiles_loaded,
- layers_total * tiles_per_layer, tile.store.file.toString());
+ listener.loader_notify(tiles_loaded_total,
+ tiles_total, store.file.toString());
if (do_next)
next_load();
}
+ public synchronized void notify_tile(AltosMapTile tile, int status) {
+ notify_store(tile.store, status);
+ }
+
public AltosMapCache cache() { return map.cache(); }
public AltosMapLoader(AltosMap map, AltosMapLoaderListener listener) {