// 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 = 1.5;
+ 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 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;
// 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);
- for (int i = 0; i < 9; i++) {
- int x = i%3 - 1, y = i/3 - 1;
+ LatLng map_latlng = latlng(px_size/2-coord.x, px_size/2-coord.y);
- 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);
+ File pngfile = MapFile(map_latlng.lat, map_latlng.lng);
+ String pngurl = MapURL(map_latlng.lat, map_latlng.lng);
+ bgLoadMap(tile, pngfile, pngurl);
+ }
+
+ 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)
return;
+ if (state.pad_lat == 0 && state.pad_lon == 0)
+ return;
if (!state.gps.locked) {
- if (state.pad_lat == 0 && state.pad_lon == 0)
- return;
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;
}
- }
- private AltosSiteMap(boolean knowWhatYouAreDoing) {
- if (!knowWhatYouAreDoing) {
- throw new RuntimeException("Arggh.");
+ 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, crc_errors, lref, ref);
+ initMap(tile, offset);
+ finishTileLater(tile, offset);
+ }
+
+ scrollRocketToVisible(pt);
+
+ if (offset != tileOffset(last_pt)) {
+ ensureTilesAround(offset);
}
+
+ last_pt = pt;
+ last_state = state.state;
}
- public AltosSiteMap() {
- JComponent comp = new JComponent() {
- GrabNDrag scroller = new GrabNDrag(this);
- {
- addMouseMotionListener(scroller);
- addMouseListener(scroller);
- setAutoscrolls(true);
+ 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);
}
- };
+ } );
+ }
- GridBagLayout layout = new GridBagLayout();
- comp.setLayout(layout);
+ private void ensureTilesAround(Point base_offset) {
+ for (int x = -1; x <= 1; x++) {
+ for (int y = -1; y <= 1; y++) {
+ Point offset = new Point(base_offset.x + x, base_offset.y + y);
+ if (mapTiles.containsKey(offset))
+ continue;
+ AltosSiteMapTile tile = createTile(offset);
+ initMap(tile, offset);
+ finishTileLater(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);
- 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]);
+
+ 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() {
+ GrabNDrag scroller = new GrabNDrag(comp);
+
+ comp.setLayout(layout);
+
+ for (int x = -1; x <= 1; x++) {
+ for (int y = -1; y <= 1; y++) {
+ Point offset = new Point(x, y);
+ AltosSiteMapTile t = createTile(offset);
+ addTileAt(t, offset);
+ }
}
setViewportView(comp);
setPreferredSize(new Dimension(500,200));
projects / fw / altos / blobdiff