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/*
* Copyright © 2015 Keith Packard <keithp@keithp.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
package org.altusmetrum.altoslib_7;
import java.io.*;
import java.util.*;
import java.text.*;
import java.lang.Math;
import java.net.URL;
import java.net.URLConnection;
public class AltosMapLoader implements AltosMapTileListener {
AltosMapLoaderListener listener;
double latitude, longitude;
int min_z;
int max_z;
int cur_z;
int all_types;
int cur_type;
int radius;
int tiles_per_layer;
int tiles_loaded;
int layers_total;
int layers_loaded;
AltosMap map;
public void do_load() {
map.set_load_params(cur_z + AltosMap.default_zoom, cur_type, latitude, longitude, radius, this);
}
public int next_type(int start) {
int next_type;
for (next_type = start;
next_type <= AltosMap.maptype_terrain && (all_types & (1 << next_type)) == 0;
next_type++)
;
return next_type;
}
public void next_load() {
int next_type = next_type(cur_type + 1);
if (next_type > AltosMap.maptype_terrain) {
if (cur_z == max_z) {
return;
} else {
cur_z++;
}
next_type = next_type(0);
}
cur_type = next_type;
do_load();
}
private void start_load() {
cur_z = min_z;
int ntype = 0;
for (int t = AltosMap.maptype_hybrid; t <= AltosMap.maptype_terrain; t++)
if ((all_types & (1 << t)) != 0)
ntype++;
if (ntype == 0) {
all_types = (1 << AltosMap.maptype_hybrid);
ntype = 1;
}
cur_type = next_type(0);
tiles_per_layer = (radius * 2 + 1) * (radius * 2 + 1);
layers_total = (max_z - min_z + 1) * ntype;
layers_loaded = 0;
tiles_loaded = 0;
listener.loader_start(layers_total * tiles_per_layer);
do_load();
}
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();
}
public synchronized void notify_tile(AltosMapTile tile, int status) {
boolean do_next = false;
if (status == AltosMapTile.loading)
return;
if (layers_loaded >= layers_total)
return;
++tiles_loaded;
if (tiles_loaded == tiles_per_layer) {
tiles_loaded = 0;
++layers_loaded;
if (layers_loaded == layers_total) {
listener.loader_done(layers_total * tiles_per_layer);
return;
} else {
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();
}
public AltosMapCache cache() { return map.cache(); }
public AltosMapLoader(AltosMap map, AltosMapLoaderListener listener) {
this.map = map;
this.listener = listener;
}
}
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