altosui/altosuilib/altoslib: Move more stuff out of autosui. Reduce site map memory

Prepare to share with TeleGPS application.

This also has the changes to the site map tile which cache only a few
images and regenerate the flight path on the fly, saving piles of memory

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 0 insertions, 476 deletions

diff --git a/altosui/AltosSiteMap.java b/altosui/AltosSiteMap.java
deleted file mode 100644
index 643417b5..00000000
--- a/altosui/AltosSiteMap.java
+++ /dev/null
@@ -1,476 +0,0 @@
-/*
- * Copyright © 2010 Anthony Towns <aj@erisian.com.au>
- *
- * 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 altosui;
-
-import java.awt.*;
-import javax.swing.*;
-import java.io.*;
-import java.lang.Math;
-import java.awt.geom.Point2D;
-import java.util.concurrent.*;
-import org.altusmetrum.altoslib_3.*;
-import org.altusmetrum.altosuilib_1.*;
-
-public class AltosSiteMap extends JScrollPane implements AltosFlightDisplay {
-	// preferred vertical step in a tile in naut. miles
-	// will actually choose a step size between x and 2x, where this
-	// is 1.5x
-	static final double tile_size_nmi = 0.75;
-
-	static final int px_size = 512;
-
-	static final int MAX_TILE_DELTA = 100;
-
-	private static Point2D.Double translatePoint(Point2D.Double p,
-			Point2D.Double d)
-	{
-		return new Point2D.Double(p.x + d.x, p.y + d.y);
-	}
-
-	static class LatLng {
-		public double lat, lng;
-		public LatLng(double lat, double lng) {
-			this.lat = lat;
-			this.lng = lng;
-		}
-	}
-
-	// based on google js
-	//  http://maps.gstatic.com/intl/en_us/mapfiles/api-3/2/10/main.js
-	// search for fromLatLngToPoint and fromPointToLatLng
-	/*
-	private static Point2D.Double pt(LatLng latlng, int zoom) {
-		double scale_x = 256/360.0 * Math.pow(2, zoom);
-		double scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
-		return pt(latlng, scale_x, scale_y);
-	}
-	*/
-
-	private static Point2D.Double pt(LatLng latlng,
-					 double scale_x, double scale_y)
-	{
-		Point2D.Double res = new Point2D.Double();
-		double e;
-
-		res.x = latlng.lng * scale_x;
-
-		e = Math.sin(Math.toRadians(latlng.lat));
-		e = Math.max(e,-(1-1.0E-15));
-		e = Math.min(e,  1-1.0E-15 );
-
-		res.y = 0.5*Math.log((1+e)/(1-e))*-scale_y;
-		return res;
-	}
-
-	static private LatLng latlng(Point2D.Double pt,
-				     double scale_x, double scale_y)
-	{
-		double lat, lng;
-		double rads;
-
-		lng = pt.x/scale_x;
-		rads = 2 * Math.atan(Math.exp(-pt.y/scale_y));
-		lat = Math.toDegrees(rads - Math.PI/2);
-
-		return new LatLng(lat,lng);
-	}
-
-	int zoom;
-	double scale_x, scale_y;
-
-	int radius;	/* half width/height of tiles to load */
-
-	private Point2D.Double pt(double lat, double lng) {
-		return pt(new LatLng(lat, lng), scale_x, scale_y);
-	}
-
-	private LatLng latlng(double x, double y) {
-		return latlng(new Point2D.Double(x,y), scale_x, scale_y);
-	}
-	/*
-	private LatLng latlng(Point2D.Double pt) {
-		return latlng(pt, scale_x, scale_y);
-	}
-	*/
-
-	ConcurrentHashMap<Point,AltosSiteMapTile> mapTiles = new ConcurrentHashMap<Point,AltosSiteMapTile>();
-	Point2D.Double centre;
-
-	private Point2D.Double tileCoordOffset(Point p) {
-		return new Point2D.Double(centre.x - p.x*px_size,
-					  centre.y - p.y * px_size);
-	}
-
-	private Point tileOffset(Point2D.Double p) {
-		return new Point((int)Math.floor((centre.x+p.x)/px_size),
-				 (int)Math.floor((centre.y+p.y)/px_size));
-	}
-
-	private Point2D.Double getBaseLocation(double lat, double lng) {
-		Point2D.Double locn, north_step;
-
-		zoom = 2;
-		// stupid loop structure to please Java's control flow analysis
-		do {
-			zoom++;
-			scale_x = 256/360.0 * Math.pow(2, zoom);
-			scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
-			locn = pt(lat, lng);
-			north_step = pt(lat+tile_size_nmi*4/3/60.0, lng);
-			if (locn.y - north_step.y > px_size)
-				break;
-		} while (zoom < 22);
-		locn.x = -px_size * Math.floor(locn.x/px_size);
-		locn.y = -px_size * Math.floor(locn.y/px_size);
-		return locn;
-	}
-
-	public void reset() {
-		// nothing
-	}
-
-	public void set_font() {
-		// nothing
-	}
-
-	private void loadMap(final AltosSiteMapTile tile,
-			     File pngfile, String pngurl)
-	{
-		final ImageIcon res = AltosSiteMapCache.fetchAndLoadMap(pngfile, pngurl);
-		if (res != null) {
-			SwingUtilities.invokeLater(new Runnable() {
-					public void run() {
-						tile.loadMap(res);
-					}
-				});
-		} else {
-			System.out.printf("# Failed to fetch file %s\n", pngfile);
-			System.out.printf(" wget -O '%s' '%s'\n", pngfile, pngurl);
-		}
-	}
-
-	File pngfile;
-	String pngurl;
-
-	public int prefetchMap(int x, int y) {
-		LatLng map_latlng = latlng(
-			-centre.x + x*px_size + px_size/2,
-			-centre.y + y*px_size + px_size/2);
-		pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom);
-		pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom);
-		if (pngfile.exists()) {
-			return 1;
-		} else if (AltosSiteMapCache.fetchMap(pngfile, pngurl)) {
-			return 0;
-		} else {
-			return -1;
-		}
-	}
-
-	public static void prefetchMaps(double lat, double lng) {
-		int w = AltosSiteMapPreload.width;
-		int h = AltosSiteMapPreload.height;
-		AltosSiteMap asm = new AltosSiteMap(true);
-		asm.centre = asm.getBaseLocation(lat, lng);
-
-		//Point2D.Double p = new Point2D.Double();
-		//Point2D.Double p2;
-		int dx = -w/2, dy = -h/2;
-		for (int y = dy; y < h+dy; y++) {
-			for (int x = dx; x < w+dx; x++) {
-				int r = asm.prefetchMap(x, y);
-				switch (r) {
-				case 1:
-					System.out.printf("Already have %s\n", asm.pngfile);
-					break;
-				case 0:
-					System.out.printf("Fetched map %s\n", asm.pngfile);
-					break;
-				case -1:
-					System.out.printf("# Failed to fetch file %s\n", asm.pngfile);
-					System.out.printf(" wget -O '%s' ''\n", asm.pngfile, asm.pngurl);
-					break;
-				}
-			}
-		}
-	}
-
-	public String initMap(Point offset) {
-		AltosSiteMapTile tile = mapTiles.get(offset);
-		Point2D.Double coord = tileCoordOffset(offset);
-
-		LatLng map_latlng = latlng(px_size/2-coord.x, px_size/2-coord.y);
-
-		File pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom);
-		String pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom);
-		loadMap(tile, pngfile, pngurl);
-		return pngfile.toString();
-	}
-
-	public void initAndFinishMapAsync (final AltosSiteMapTile tile, final Point offset) {
-		Thread thread = new Thread() {
-				public void run() {
-					initMap(offset);
-					finishTileLater(tile, offset);
-				}
-			};
-		thread.start();
-	}
-
-	public void setBaseLocation(double lat, double lng) {
-		for (Point k : mapTiles.keySet()) {
-			AltosSiteMapTile tile = mapTiles.get(k);
-			tile.clearMap();
-		}
-
-		centre = getBaseLocation(lat, lng);
-		scrollRocketToVisible(pt(lat,lng));
-	}
-
-	private void initMaps(double lat, double lng) {
-		setBaseLocation(lat, lng);
-
-		Thread thread = new Thread() {
-				public void run() {
-					for (Point k : mapTiles.keySet())
-						initMap(k);
-				}
-			};
-		thread.start();
-	}
-
-	private static File MapFile(double lat, double lng, int zoom) {
-		char chlat = lat < 0 ? 'S' : 'N';
-		char chlng = lng < 0 ? 'W' : 'E';
-		if (lat < 0) lat = -lat;
-		if (lng < 0) lng = -lng;
-		return new File(AltosUIPreferences.mapdir(),
-				String.format("map-%c%.6f,%c%.6f-%d.png",
-					      chlat, lat, chlng, lng, zoom));
-	}
-
-	private static String MapURL(double lat, double lng, int zoom) {
-		return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&sensor=false&maptype=hybrid&format=png32", lat, lng, zoom, px_size, px_size);
-	}
-
-	boolean initialised = false;
-	Point2D.Double last_pt = null;
-	int last_state = -1;
-
-	public void show(double lat, double lon) {
-		System.out.printf ("show %g %g\n", lat, lon);
-		return;
-//		initMaps(lat, lon);
-//		scrollRocketToVisible(pt(lat, lon));
-	}
-	public void show(final AltosState state, final AltosListenerState listener_state) {
-		// if insufficient gps data, nothing to update
-		AltosGPS	gps = state.gps;
-
-		if (gps == null)
-			return;
-
-		if (!gps.locked && gps.nsat < 4)
-			return;
-
-		if (!initialised) {
-			if (state.pad_lat != AltosLib.MISSING && state.pad_lon != AltosLib.MISSING) {
-				initMaps(state.pad_lat, state.pad_lon);
-				initialised = true;
-			} else if (gps.lat != AltosLib.MISSING && gps.lon != AltosLib.MISSING) {
-				initMaps(gps.lat, gps.lon);
-				initialised = true;
-			} else {
-				return;
-			}
-		}
-
-		final Point2D.Double pt = pt(gps.lat, gps.lon);
-		if (last_pt == pt && last_state == state.state)
-			return;
-
-		if (last_pt == null) {
-			last_pt = pt;
-		}
-		boolean in_any = false;
-		for (Point offset : mapTiles.keySet()) {
-			AltosSiteMapTile tile = mapTiles.get(offset);
-			Point2D.Double ref, lref;
-			ref = translatePoint(pt, tileCoordOffset(offset));
-			lref = translatePoint(last_pt, tileCoordOffset(offset));
-			tile.show(state, listener_state, lref, ref);
-			if (0 <= ref.x && ref.x < px_size)
-				if (0 <= ref.y && ref.y < px_size)
-					in_any = true;
-		}
-
-		Point offset = tileOffset(pt);
-		if (!in_any) {
-			Point2D.Double ref, lref;
-			ref = translatePoint(pt, tileCoordOffset(offset));
-			lref = translatePoint(last_pt, tileCoordOffset(offset));
-
-			AltosSiteMapTile tile = createTile(offset);
-			tile.show(state, listener_state, lref, ref);
-			initAndFinishMapAsync(tile, offset);
-		}
-
-		scrollRocketToVisible(pt);
-
-		if (offset != tileOffset(last_pt)) {
-			ensureTilesAround(offset);
-		}
-
-		last_pt = pt;
-		last_state = state.state;
-	}
-
-	public void centre(Point2D.Double pt) {
-		Rectangle r = comp.getVisibleRect();
-		Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
-		int dx = (int)copt.x - r.width/2 - r.x;
-		int dy = (int)copt.y - r.height/2 - r.y;
-		r.x += dx;
-		r.y += dy;
-		comp.scrollRectToVisible(r);
-	}
-
-	public void centre(AltosState state) {
-		if (!state.gps.locked && state.gps.nsat < 4)
-			return;
-		centre(pt(state.gps.lat, state.gps.lon));
-	}
-
-	public void draw_circle(double lat, double lon) {
-		final Point2D.Double pt = pt(lat, lon);
-
-		for (Point offset : mapTiles.keySet()) {
-			AltosSiteMapTile tile = mapTiles.get(offset);
-			Point2D.Double ref = translatePoint(pt, tileCoordOffset(offset));
-			tile.draw_circle(ref);
-		}
-	}
-
-	private AltosSiteMapTile createTile(Point offset) {
-		AltosSiteMapTile tile = new AltosSiteMapTile(px_size);
-		mapTiles.put(offset, tile);
-		return tile;
-	}
-	private void finishTileLater(final AltosSiteMapTile tile,
-				     final Point offset)
-	{
-		SwingUtilities.invokeLater( new Runnable() {
-			public void run() {
-				addTileAt(tile, offset);
-			}
-		} );
-	}
-
-	private void ensureTilesAround(Point base_offset) {
-		for (int x = -radius; x <= radius; x++) {
-			for (int y = -radius; y <= radius; y++) {
-				Point offset = new Point(base_offset.x + x, base_offset.y + y);
-				if (mapTiles.containsKey(offset))
-					continue;
-				AltosSiteMapTile tile = createTile(offset);
-				initAndFinishMapAsync(tile, offset);
-			}
-		}
-	}
-
-	private Point topleft = new Point(0,0);
-	private void scrollRocketToVisible(Point2D.Double pt) {
-		Rectangle r = comp.getVisibleRect();
-		Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
-		int dx = (int)copt.x - r.width/2 - r.x;
-		int dy = (int)copt.y - r.height/2 - r.y;
-		if (Math.abs(dx) > r.width/4 || Math.abs(dy) > r.height/4) {
-			r.x += dx;
-			r.y += dy;
-			comp.scrollRectToVisible(r);
-		}
-	}
-
-	private void addTileAt(AltosSiteMapTile tile, Point offset) {
-		if (Math.abs(offset.x) >= MAX_TILE_DELTA ||
-				Math.abs(offset.y) >= MAX_TILE_DELTA)
-		{
-			System.out.printf("Rocket too far away from pad (tile %d,%d)\n",
-					  offset.x, offset.y);
-			return;
-		}
-
-		boolean review = false;
-		Rectangle r = comp.getVisibleRect();
-		if (offset.x < topleft.x) {
-			r.x += (topleft.x - offset.x) * px_size;
-			topleft.x = offset.x;
-			review = true;
-		}
-		if (offset.y < topleft.y) {
-			r.y += (topleft.y - offset.y) * px_size;
-			topleft.y = offset.y;
-			review = true;
-		}
-		GridBagConstraints c = new GridBagConstraints();
-		c.anchor = GridBagConstraints.CENTER;
-		c.fill = GridBagConstraints.BOTH;
-		// put some space between the map tiles, debugging only
-		// c.insets = new Insets(5, 5, 5, 5);
-
-		c.gridx = offset.x + MAX_TILE_DELTA;
-		c.gridy = offset.y + MAX_TILE_DELTA;
-		layout.setConstraints(tile, c);
-
-		comp.add(tile);
-		if (review) {
-			comp.scrollRectToVisible(r);
-		}
-	}
-
-	private AltosSiteMap(boolean knowWhatYouAreDoing) {
-		if (!knowWhatYouAreDoing) {
-			throw new RuntimeException("Arggh.");
-		}
-	}
-
-	JComponent comp = new JComponent() { };
-	private GridBagLayout layout = new GridBagLayout();
-
-	public AltosSiteMap(int in_radius) {
-		radius = in_radius;
-
-		GrabNDrag scroller = new GrabNDrag(comp);
-
-		comp.setLayout(layout);
-
-		for (int x = -radius; x <= radius; x++) {
-			for (int y = -radius; y <= radius; y++) {
-				Point offset = new Point(x, y);
-				AltosSiteMapTile t = createTile(offset);
-				addTileAt(t, offset);
-			}
-		}
-		setViewportView(comp);
-		setPreferredSize(new Dimension(500,500));
-	}
-
-	public AltosSiteMap() {
-		this(1);
-	}
-}