Пример #1
0
 /**
  * Get the GeoPoint for x,y in screen coordinates.
  *
  * @param x screen coordinate
  * @param y screen coordinate
  * @return the corresponding GeoPoint
  */
 public GeoPoint fromScreenPoint(float x, float y) {
   fromScreenPoint(x, y, mMovePoint);
   return new GeoPoint(
       MercatorProjection.toLatitude(mMovePoint.y), MercatorProjection.toLongitude(mMovePoint.x));
 }
Пример #2
0
  @Override
  public void query(MapTile tile, ITileDataSink sink) {

    if (mTileSource.fileHeader == null) {
      sink.completed(FAILED);
      return;
    }

    if (mIntBuffer == null) mIntBuffer = new int[MAXIMUM_WAY_NODES_SEQUENCE_LENGTH * 2];

    try {
      mTileProjection.setTile(tile);
      // mTile = tile;

      /* size of tile in map coordinates; */
      double size = 1.0 / (1 << tile.zoomLevel);

      /* simplification tolerance */
      int pixel = (tile.zoomLevel > 11) ? 1 : 2;

      int simplify = Tile.SIZE / pixel;

      /* translate screen pixel for tile to latitude and longitude
       * tolerance for point reduction before projection. */
      minDeltaLat =
          (int)
                  (Math.abs(
                          MercatorProjection.toLatitude(tile.y + size)
                              - MercatorProjection.toLatitude(tile.y))
                      * 1e6)
              / simplify;
      minDeltaLon =
          (int)
                  (Math.abs(
                          MercatorProjection.toLongitude(tile.x + size)
                              - MercatorProjection.toLongitude(tile.x))
                      * 1e6)
              / simplify;

      QueryParameters queryParameters = new QueryParameters();
      queryParameters.queryZoomLevel = mTileSource.fileHeader.getQueryZoomLevel(tile.zoomLevel);

      /* get and check the sub-file for the query zoom level */
      SubFileParameter subFileParameter =
          mTileSource.fileHeader.getSubFileParameter(queryParameters.queryZoomLevel);

      if (subFileParameter == null) {
        log.warn("no sub-file for zoom level: " + queryParameters.queryZoomLevel);

        sink.completed(FAILED);
        return;
      }

      QueryCalculations.calculateBaseTiles(queryParameters, tile, subFileParameter);
      QueryCalculations.calculateBlocks(queryParameters, subFileParameter);
      processBlocks(sink, queryParameters, subFileParameter);
    } catch (IOException e) {
      log.error(e.getMessage());
      sink.completed(FAILED);
      return;
    }

    sink.completed(SUCCESS);
  }