/**
* @param zoom level of the tile
* @return how many pixels of the screen occupies one pixel of the tile
*/
private double getTileToScreenRatio(int zoom) {
MapView mv = Main.map.mapView;
LatLon topLeft = mv.getLatLon(0, 0);
LatLon botLeft = mv.getLatLon(0, tileSource.getTileSize());
TileXY topLeftTile = tileSource.latLonToTileXY(topLeft.toCoordinate(), zoom);
ICoordinate north =
tileSource.tileXYToLatLon(topLeftTile.getXIndex(), topLeftTile.getYIndex(), zoom);
ICoordinate south =
tileSource.tileXYToLatLon(topLeftTile.getXIndex(), topLeftTile.getYIndex() + 1, zoom);
return Math.abs((north.getLat() - south.getLat()) / (topLeft.lat() - botLeft.lat()));
}
/** Restores the previous settings in the download dialog. */
public void restoreSettings() {
cbDownloadOsmData.setSelected(Main.pref.getBoolean("download.osm", true));
cbDownloadGpxData.setSelected(Main.pref.getBoolean("download.gps", false));
cbNewLayer.setSelected(Main.pref.getBoolean("download.newlayer", false));
cbStartup.setSelected(isAutorunEnabled());
int idx = Main.pref.getInteger("download.tab", 0);
if (idx < 0 || idx > tpDownloadAreaSelectors.getTabCount()) {
idx = 0;
}
tpDownloadAreaSelectors.setSelectedIndex(idx);
if (Main.isDisplayingMapView()) {
MapView mv = Main.map.mapView;
currentBounds = new Bounds(mv.getLatLon(0, mv.getHeight()), mv.getLatLon(mv.getWidth(), 0));
boundingBoxChanged(currentBounds, null);
} else {
Bounds bounds = getSavedDownloadBounds();
if (bounds != null) {
currentBounds = bounds;
boundingBoxChanged(currentBounds, null);
}
}
}