import java.awt.geom.Line2D;
public class AltosSiteMap extends JScrollPane implements AltosFlightDisplay {
- // max vertical step in a tile in naut. miles
- static final double tile_size_nmi = 1.0;
+ // 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;
return latlng(pt, scale_x, scale_y);
}
- AltosSiteMapTile [] mapTiles = new AltosSiteMapTile[9];
- Point2D.Double [] tileOffset = new Point2D.Double[9];
+ HashMap<Point,AltosSiteMapTile> mapTiles = new HashMap<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;
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/60.0, 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);
// nothing
}
- private void bgLoadMap(final int i,
+ private void bgLoadMap(final AltosSiteMapTile tile,
final File pngfile, final String pngurl)
{
+ //System.out.printf("Loading/fetching map %s\n", pngfile);
Thread thread = new Thread() {
public void run() {
ImageIcon res;
res = AltosSiteMapCache.fetchAndLoadMap(pngfile, pngurl);
if (res != null) {
- mapTiles[i].loadMap(res);
+ tile.loadMap(res);
} else {
System.out.printf("# Failed to fetch file %s\n", pngfile);
System.out.printf(" wget -O '%s' ''\n", pngfile, pngurl);
AltosPreferences.init(null);
AltosSiteMap asm = new AltosSiteMap(true);
- Point2D.Double c = asm.getBaseLocation(lat, lng);
+ 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++) {
LatLng map_latlng = asm.latlng(
- -c.x + x*px_size + px_size/2,
- -c.y + y*px_size + px_size/2);
+ -asm.centre.x + x*px_size + px_size/2,
+ -asm.centre.y + y*px_size + px_size/2);
File pngfile = asm.MapFile(map_latlng.lat, map_latlng.lng);
String pngurl = asm.MapURL(map_latlng.lat, map_latlng.lng);
if (pngfile.exists()) {
}
}
- private void initMaps(double lat, double lng) {
- Point2D.Double c = getBaseLocation(lat, lng);
- Point2D.Double p = new Point2D.Double();
+ private void initMap(AltosSiteMapTile tile, Point offset) {
+ Point2D.Double coord = tileCoordOffset(offset);
+
+ LatLng map_latlng = latlng(px_size/2-coord.x, px_size/2-coord.y);
- for (int i = 0; i < 9; i++) {
- int x = i%3 - 1, y = i/3 - 1;
+ File pngfile = MapFile(map_latlng.lat, map_latlng.lng);
+ String pngurl = MapURL(map_latlng.lat, map_latlng.lng);
+ bgLoadMap(tile, pngfile, pngurl);
+ }
- tileOffset[i] = new Point2D.Double(
- c.x - x*px_size, p.y = c.y - y*px_size);
- LatLng map_latlng = latlng(
- -tileOffset[i].x+px_size/2,
- -tileOffset[i].y+px_size/2);
+ private void initMaps(double lat, double lng) {
+ centre = getBaseLocation(lat, lng);
- File pngfile = MapFile(map_latlng.lat, map_latlng.lng);
- String pngurl = MapURL(map_latlng.lat, map_latlng.lng);
- bgLoadMap(i, pngfile, pngurl);
+ for (Point k : mapTiles.keySet()) {
+ initMap(mapTiles.get(k), k);
}
}
}
boolean initialised = false;
- public void show(AltosState state, int crc_errors) {
+ Point2D.Double last_pt = null;
+ int last_state = -1;
+ public void show(final AltosState state, final int crc_errors) {
// if insufficient gps data, nothing to update
- if (state.gps == null || !state.gps.locked) {
- if (state.pad_lat == 0 && state.pad_lon == 0)
- return;
- if (state.ngps < 3)
+ if (state.gps == null)
+ return;
+ if (state.pad_lat == 0 && state.pad_lon == 0)
+ return;
+ if (!state.gps.locked) {
+ if (state.gps.nsat < 4)
return;
}
initialised = true;
}
- Point2D.Double pt = pt(state.gps.lat, state.gps.lon);
- for (int x = 0; x < mapTiles.length; x++) {
- mapTiles[x].show(state, crc_errors,
- translatePoint(pt, tileOffset[x]));
+ final Point2D.Double pt = pt(state.gps.lat, state.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, crc_errors, lref, ref);
+ if (0 <= ref.x && ref.x < px_size)
+ if (0 <= ref.y && ref.y < px_size)
+ in_any = true;
+ }
+ if (!in_any) {
+ final AltosSiteMapTile tile = new AltosSiteMapTile(px_size);
+ final Point offset = tileOffset(pt);
+ mapTiles.put(offset, tile);
+
+ Point2D.Double ref, lref;
+ ref = translatePoint(pt, tileCoordOffset(offset));
+ lref = translatePoint(last_pt, tileCoordOffset(offset));
+ tile.show(state, crc_errors, lref, ref);
+
+ initMap(tile, offset);
+
+ SwingUtilities.invokeLater( new Runnable() {
+ public void run() {
+ addTileAt(tile, offset);
+ setViewportView(comp);
+ }
+ } );
+ }
+ last_pt = pt;
+ last_state = state.state;
+ }
+
+ private void addTileAt(AltosSiteMapTile tile, Point offset) {
+ 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 + 100;
+ c.gridy = offset.y + 100;
+ layout.setConstraints(tile, c);
+ comp.add(tile);
}
private AltosSiteMap(boolean knowWhatYouAreDoing) {
}
}
+ JComponent comp;
+ private GridBagLayout layout;
+
public AltosSiteMap() {
- JComponent comp = new JComponent() {
+ comp = new JComponent() {
GrabNDrag scroller = new GrabNDrag(this);
{
addMouseMotionListener(scroller);
}
};
- GridBagLayout layout = new GridBagLayout();
+ layout = new GridBagLayout();
comp.setLayout(layout);
- 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);
- for (int x = 0; x < 9; x++) {
- c.gridx = x % 3;
- c.gridy = x / 3;
- mapTiles[x] = new AltosSiteMapTile(px_size);
- layout.setConstraints(mapTiles[x], c);
- comp.add(mapTiles[x]);
+ for (int x = -1; x <= 1; x++) {
+ for (int y = -1; y <= 1; y++) {
+ AltosSiteMapTile t = new AltosSiteMapTile(px_size);
+ Point offset = new Point(x, y);
+ mapTiles.put(offset, t);
+ addTileAt(t, offset);
+ }
}
setViewportView(comp);
setPreferredSize(new Dimension(500,200));
projects / fw / altos / blobdiff