Initial Commit - Copy from Altus Metrum AltOS
This commit is contained in:
524
altoslib/AltosMap.java
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524
altoslib/AltosMap.java
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/*
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* Copyright © 2010 Anthony Towns <aj@erisian.com.au>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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package org.altusmetrum.altoslib_14;
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import java.io.*;
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import java.lang.*;
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import java.util.*;
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import java.util.concurrent.*;
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public class AltosMap implements AltosMapTileListener, AltosMapStoreListener {
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public static final int px_size = 512;
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public static final int maptype_hybrid = 0;
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public static final int maptype_roadmap = 1;
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public static final int maptype_satellite = 2;
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public static final int maptype_terrain = 3;
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public static final int maptype_default = maptype_hybrid;
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public static final int default_zoom = 15;
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public static final int min_zoom = 3;
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public static final int max_zoom = 21;
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public static final String[] maptype_names = {
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"hybrid",
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"roadmap",
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"satellite",
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"terrain"
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};
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public static final String[] maptype_labels = {
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"Hybrid",
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"Roadmap",
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"Satellite",
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"Terrain"
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};
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AltosMapInterface map_interface;
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int scale;
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AltosMapCache cache;
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public AltosMapCache cache() { return cache; }
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LinkedList<AltosMapMark> marks = new LinkedList<AltosMapMark>();
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AltosMapPath path;
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AltosMapLine line;
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public AltosLatLon last_position;
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boolean have_boost = false;
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boolean have_landed = false;
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ConcurrentHashMap<AltosPointInt,AltosMapTile> tiles = new ConcurrentHashMap<AltosPointInt,AltosMapTile>();
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int load_radius;
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AltosLatLon load_centre = null;
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AltosMapTileListener load_listener;
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int zoom = AltosMap.default_zoom;
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int maptype = AltosMap.maptype_default;
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long user_input_time;
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/* Milliseconds to wait after user action before auto-scrolling
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*/
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static final long auto_scroll_delay = 20 * 1000;
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public AltosMapTransform transform;
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public AltosLatLon centre;
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public void reset() {
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// nothing
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}
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/* MapInterface wrapping functions */
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public void repaint(int x, int y, int w, int h) {
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map_interface.repaint(new AltosRectangle(x, y, w, h));
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}
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public void repaint(AltosMapRectangle damage, int pad) {
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AltosRectangle r = transform.screen(damage);
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repaint(r.x - pad, r.y - pad, r.width + pad * 2, r.height + pad * 2);
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}
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public void repaint() {
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map_interface.repaint();
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}
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public int width() {
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return map_interface.width();
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}
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public int height() {
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return map_interface.height();
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}
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public void debug(String format, Object ... arguments) {
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map_interface.debug(format, arguments);
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}
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static public AltosPointInt floor(AltosPointDouble point) {
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return new AltosPointInt ((int) Math.floor(point.x / AltosMap.px_size) * AltosMap.px_size,
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(int) Math.floor(point.y / AltosMap.px_size) * AltosMap.px_size);
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}
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static public AltosPointInt ceil(AltosPointDouble point) {
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return new AltosPointInt ((int) Math.ceil(point.x / AltosMap.px_size) * AltosMap.px_size,
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(int) Math.ceil(point.y / AltosMap.px_size) * AltosMap.px_size);
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}
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public void notice_user_input() {
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user_input_time = System.currentTimeMillis();
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}
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public boolean recent_user_input() {
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return (System.currentTimeMillis() - user_input_time) < auto_scroll_delay;
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}
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public boolean has_centre() {
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return centre != null;
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}
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public boolean far_from_centre(AltosLatLon lat_lon) {
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if (centre == null || transform == null)
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return true;
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AltosPointDouble screen = transform.screen(lat_lon);
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int width = width();
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int dx = Math.abs ((int) (double) screen.x - width/2);
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if (dx > width / 4)
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return true;
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int height = height();
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int dy = Math.abs ((int) (double) screen.y - height/2);
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if (dy > height / 4)
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return true;
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return false;
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}
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public void set_transform() {
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if (centre != null) {
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transform = new AltosMapTransform(width(), height(), zoom, centre);
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repaint();
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}
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}
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private void set_zoom_label() {
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map_interface.set_zoom_label(String.format("Zoom %d", get_zoom() - default_zoom));
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}
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public boolean set_zoom(int zoom) {
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notice_user_input();
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if (AltosMap.min_zoom <= zoom && zoom <= AltosMap.max_zoom && zoom != this.zoom) {
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this.zoom = zoom;
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tiles.clear();
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set_transform();
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set_zoom_label();
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return true;
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}
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return false;
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}
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public boolean set_zoom_centre(int zoom, AltosPointInt centre) {
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AltosLatLon mouse_lat_lon = null;
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boolean ret;
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if (transform != null)
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mouse_lat_lon = transform.screen_lat_lon(centre);
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ret = set_zoom(zoom);
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if (ret && mouse_lat_lon != null) {
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AltosPointDouble new_mouse = transform.screen(mouse_lat_lon);
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double dx = width()/2.0 - centre.x;
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double dy = height()/2.0 - centre.y;
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AltosLatLon new_centre = transform.screen_lat_lon(new AltosPointDouble(new_mouse.x + dx, new_mouse.y + dy));
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centre(new_centre);
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}
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return ret;
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}
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public int get_zoom() {
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return zoom;
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}
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public boolean set_maptype(int maptype) {
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/*
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if (maptype != this.maptype) {
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this.maptype = maptype;
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tiles.clear();
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repaint();
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return true;
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}
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*/
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return false;
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}
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public void show(AltosGPS gps, double time, int state, double gps_height) {
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/*
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* If insufficient gps data, nothing to update
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*/
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if (gps == null)
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return;
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if (!gps.locked && gps.nsat < 4)
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return;
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switch (state) {
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case AltosLib.ao_flight_boost:
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if (!have_boost) {
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add_mark(gps.lat, gps.lon, state);
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have_boost = true;
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}
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break;
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case AltosLib.ao_flight_landed:
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if (!have_landed) {
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add_mark(gps.lat, gps.lon, state);
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have_landed = true;
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}
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break;
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}
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if (path != null) {
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AltosMapRectangle damage = path.add(gps, time, state, gps_height);
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if (damage != null)
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repaint(damage, AltosMapPath.stroke_width);
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}
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last_position = new AltosLatLon(gps.lat, gps.lon);
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maybe_centre(gps.lat, gps.lon);
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}
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public void show(AltosState state, AltosListenerState listener_state) {
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show(state.gps, state.time, state.state(), state.gps_height());
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}
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public void centre(AltosLatLon lat_lon) {
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centre = lat_lon;
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set_transform();
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}
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public void centre(double lat, double lon) {
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centre(new AltosLatLon(lat, lon));
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}
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public void centre(AltosGPS gps) {
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if (!gps.locked && gps.nsat < 4)
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return;
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centre(gps.lat, gps.lon);
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}
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public void centre(AltosState state) {
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centre(state.gps);
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}
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public void maybe_centre(double lat, double lon) {
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AltosLatLon lat_lon = new AltosLatLon(lat, lon);
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if (centre == null || (!recent_user_input() && far_from_centre(lat_lon)))
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centre(lat_lon);
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}
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public AltosMapMark add_mark(double lat, double lon, int state, String label) {
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AltosMapMark mark;
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synchronized(marks) {
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mark = map_interface.new_mark(lat, lon, state, label);
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if (mark != null)
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marks.add(mark);
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}
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repaint();
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return mark;
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}
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public AltosMapMark add_mark(double lat, double lon, int state) {
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return add_mark(lat, lon, state, null);
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}
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public void del_mark(AltosMapMark mark) {
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marks.remove(mark);
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}
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public void clear_marks() {
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synchronized(marks) {
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marks.clear();
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}
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}
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private void make_tiles() {
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AltosPointInt upper_left;
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AltosPointInt lower_right;
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if (load_centre != null) {
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AltosPointInt centre = floor(transform.point(load_centre));
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upper_left = new AltosPointInt(centre.x - load_radius * AltosMap.px_size,
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centre.y - load_radius * AltosMap.px_size);
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lower_right = new AltosPointInt(centre.x + load_radius * AltosMap.px_size,
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centre.y + load_radius * AltosMap.px_size);
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} else {
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upper_left = floor(transform.screen_point(new AltosPointInt(0, 0)));
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lower_right = floor(transform.screen_point(new AltosPointInt(width(), height())));
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}
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Enumeration<AltosPointInt> keyEnumeration = tiles.keys();
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while (keyEnumeration.hasMoreElements()) {
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AltosPointInt point = keyEnumeration.nextElement();
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if (point.x < upper_left.x || lower_right.x < point.x ||
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point.y < upper_left.y || lower_right.y < point.y) {
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tiles.remove(point);
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}
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}
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cache.set_cache_size((width() / AltosMap.px_size + 2) * (height() / AltosMap.px_size + 2));
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for (int y = (int) upper_left.y; y <= lower_right.y; y += AltosMap.px_size) {
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for (int x = (int) upper_left.x; x <= lower_right.x; x += AltosMap.px_size) {
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AltosPointInt point = new AltosPointInt(x, y);
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if (!tiles.containsKey(point)) {
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AltosLatLon ul = transform.lat_lon(point);
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AltosLatLon center = transform.lat_lon(new AltosPointDouble(x + AltosMap.px_size/2, y + AltosMap.px_size/2));
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AltosMapTile tile = map_interface.new_tile(cache, ul, center, zoom, maptype, px_size, scale);
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int status = tile.store.status();
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if (status == AltosMapTile.fetching)
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debug("Fetching %.6f %.6f %d\n", center.lat, center.lon, zoom);
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tile.add_listener(this);
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tiles.put(point, tile);
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}
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}
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}
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}
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public void set_load_params(int new_zoom, int new_type, double lat, double lon, int radius, AltosMapTileListener listener) {
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if (AltosMap.min_zoom <= new_zoom && new_zoom <= AltosMap.max_zoom)
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zoom = new_zoom;
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/* maptype = new_type; */
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load_centre = new AltosLatLon(lat, lon);
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load_radius = radius;
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load_listener = listener;
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centre(lat, lon);
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tiles.clear();
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make_tiles();
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repaint();
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}
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public String getName() {
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return "Map";
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}
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public void paint() {
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if (centre != null)
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make_tiles();
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if (transform == null)
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return;
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for (AltosMapTile tile : tiles.values())
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tile.paint(transform);
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synchronized(marks) {
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for (AltosMapMark mark : marks)
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mark.paint(transform);
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}
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if (path != null)
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path.paint(transform);
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if (line != null)
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line.paint(transform);
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}
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/* AltosMapTileListener methods */
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public synchronized void notify_tile(AltosMapTile tile, int status) {
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Enumeration<AltosPointInt> keyEnumeration = tiles.keys();
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while (keyEnumeration.hasMoreElements()) {
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AltosPointInt point = keyEnumeration.nextElement();
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if (tile == tiles.get(point)) {
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AltosPointInt screen = transform.screen(point);
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repaint(screen.x, screen.y, AltosMap.px_size, AltosMap.px_size);
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}
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}
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}
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/* AltosMapStoreListener methods */
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public synchronized void notify_store(AltosMapStore store, int status) {
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if (load_listener != null) {
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for (AltosMapTile tile : tiles.values())
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if (store.equals(tile.store))
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load_listener.notify_tile(tile, status);
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}
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}
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/* UI elements */
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AltosPointInt drag_start;
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boolean dragged;
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static final double drag_far = 20;
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private void drag(int x, int y) {
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if (drag_start == null)
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return;
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int dx = x - drag_start.x;
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int dy = y - drag_start.y;
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double distance = Math.hypot(dx, dy);
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if (distance > drag_far)
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dragged = true;
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if (transform == null)
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return;
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AltosLatLon new_centre = transform.screen_lat_lon(new AltosPointInt(width() / 2 - dx, height() / 2 - dy));
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centre(new_centre);
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drag_start = new AltosPointInt(x, y);
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}
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private void drag_start(int x, int y) {
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drag_start = new AltosPointInt(x, y);
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dragged = false;
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}
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private void drag_stop(int x, int y) {
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if (!dragged) {
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if (transform == null) {
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return;
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}
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map_interface.select_object (transform.screen_lat_lon(new AltosPointInt(x,y)));
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}
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}
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private void line_start(int x, int y) {
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if (line != null && transform != null) {
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line.pressed(new AltosPointInt(x, y), transform);
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repaint();
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}
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}
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private void line(int x, int y) {
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if (line != null && transform != null) {
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line.dragged(new AltosPointInt(x, y), transform);
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repaint();
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}
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}
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public void touch_start(int x, int y, boolean is_drag) {
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notice_user_input();
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if (is_drag)
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drag_start(x, y);
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else
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line_start(x, y);
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}
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public void touch_continue(int x, int y, boolean is_drag) {
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notice_user_input();
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if (is_drag)
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drag(x, y);
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else
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line(x, y);
|
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}
|
||||
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||||
public void touch_stop(int x, int y, boolean is_drag) {
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notice_user_input();
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if (is_drag)
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drag_stop(x, y);
|
||||
}
|
||||
|
||||
public AltosMapPathPoint nearest(int x, int y) {
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notice_user_input();
|
||||
if (path == null)
|
||||
return null;
|
||||
if (transform == null)
|
||||
return null;
|
||||
AltosLatLon at = transform.screen_lat_lon(new AltosPointInt(x, y));
|
||||
return path.nearest(at);
|
||||
}
|
||||
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||||
public AltosMap(AltosMapInterface map_interface, int scale) {
|
||||
this.map_interface = map_interface;
|
||||
this.scale = scale;
|
||||
cache = new AltosMapCache(map_interface);
|
||||
line = map_interface.new_line();
|
||||
path = map_interface.new_path();
|
||||
set_zoom_label();
|
||||
}
|
||||
|
||||
public AltosMap(AltosMapInterface map_interface) {
|
||||
this(map_interface, 1);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user