Java Code Examples for org.oscim.core.MercatorProjection#toLongitude()

static TileSource.OpenResult initialize(SQLiteTileSource tileSource, SQLiteDatabase database) {
    try {
        int minZoom = (int) database.compileStatement(SQL_GET_MIN_ZOOM).simpleQueryForLong();
        int maxZoom = (int) database.compileStatement(SQL_GET_MAX_ZOOM).simpleQueryForLong();
        tileSource.setMinZoom(minZoom);
        tileSource.setMaxZoom(maxZoom);

        String[] args = {String.valueOf(17 - maxZoom)};
        int minX = getInt(database, SQL_GET_MIN_X, args);
        int minY = getInt(database, SQL_GET_MIN_Y, args);
        int maxX = getInt(database, SQL_GET_MAX_X, args) + 1;
        int maxY = getInt(database, SQL_GET_MAX_Y, args) + 1;

        double scale = 1 << maxZoom;
        tileSource.mBoundingBox = new BoundingBox(
                MercatorProjection.toLatitude(maxY / scale),
                MercatorProjection.toLongitude(minX / scale),
                MercatorProjection.toLatitude(minY / scale),
                MercatorProjection.toLongitude(maxX / scale)
        );

        //TODO Try to fill zoom table and see what happens
    } catch (SQLException e) {
        return new TileSource.OpenResult(e.toString());
    }
    return TileSource.OpenResult.SUCCESS;
}
 

/**
 * Checks if map contains given point
 */
public boolean contains(double x, double y) {
    if (polygonPoints == null) {
        GeoPoint geoPoint = new GeoPoint(MercatorProjection.toLatitude(y), MercatorProjection.toLongitude(x));
        return boundingBox.contains(geoPoint);
    }
    // http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html
    //  Note that division by zero is avoided because the division is protected
    //  by the "if" clause which surrounds it.
    int j = polygonPoints.length - 2;
    boolean inside = false;

    for (int i = 0; i < polygonPoints.length; i += 2) {
        double ix = polygonPoints[i];
        double iy = polygonPoints[i + 1];
        double jx = polygonPoints[j];
        double jy = polygonPoints[j + 1];
        if (iy < y && jy >= y || jy < y && iy >= y) {
            if (ix + (y - iy) * 1. / (jy - iy) * (jx - ix) < x) {
                inside = !inside;
            }
        }
        j = i;
    }

    return inside;
}
 

public static LatLngBounds toLatLngBounds(Box box) {
    double minLon = MercatorProjection.toLongitude(box.xmin);
    double maxLon = MercatorProjection.toLongitude(box.xmax);
    double minLat = MercatorProjection.toLatitude(box.ymax);
    double maxLat = MercatorProjection.toLatitude(box.ymin);
    if (Double.isNaN(minLon) || Double.isNaN(maxLon) || Double.isNaN(minLat) || Double.isNaN(maxLat))
        minLon = maxLon = minLat = maxLat = 0;
    return new LatLngBounds(new LatLng(minLat, minLon), new LatLng(maxLat, maxLon));
}
 

public BoundingBox getMapLimit() {
    return new BoundingBox(
            MercatorProjection.toLatitude(mMaxY), MercatorProjection.toLongitude(mMinX),
            MercatorProjection.toLatitude(mMinY), MercatorProjection.toLongitude(mMaxX)
    );
}
 

/**
 * Get the GeoPoint for x,y in screen coordinates.
 *
 * @param x screen coordinate
 * @param y screen coordinate
 * @return the corresponding GeoPoint
 */
public synchronized GeoPoint fromScreenPoint(float x, float y) {
    fromScreenPoint(x, y, mMovePoint);
    return new GeoPoint(
            MercatorProjection.toLatitude(mMovePoint.y),
            MercatorProjection.toLongitude(mMovePoint.x));
}