/** Sets the displayed map pane and zoom level so that all map markers are visible. */
public void setDisplayToFitMapRectangle() {
if (mapRectangleList == null || mapRectangleList.size() == 0) {
return;
}
int x_min = Integer.MAX_VALUE;
int y_min = Integer.MAX_VALUE;
int x_max = Integer.MIN_VALUE;
int y_max = Integer.MIN_VALUE;
int mapZoomMax = tileController.getTileSource().getMaxZoom();
for (MapRectangle rectangle : mapRectangleList) {
x_max = Math.max(x_max, OsmMercator.LonToX(rectangle.getBottomRight().getLon(), mapZoomMax));
y_max = Math.max(y_max, OsmMercator.LatToY(rectangle.getTopLeft().getLat(), mapZoomMax));
x_min = Math.min(x_min, OsmMercator.LonToX(rectangle.getTopLeft().getLon(), mapZoomMax));
y_min = Math.min(y_min, OsmMercator.LatToY(rectangle.getBottomRight().getLat(), mapZoomMax));
}
int height = Math.max(0, getHeight());
int width = Math.max(0, getWidth());
// System.out.println(x_min + " < x < " + x_max);
// System.out.println(y_min + " < y < " + y_max);
// System.out.println("tiles: " + width + " " + height);
int newZoom = mapZoomMax;
int x = x_max - x_min;
int y = y_max - y_min;
while (x > width || y > height) {
// System.out.println("zoom: " + zoom + " -> " + x + " " + y);
newZoom--;
x >>= 1;
y >>= 1;
}
x = x_min + (x_max - x_min) / 2;
y = y_min + (y_max - y_min) / 2;
int z = 1 << (mapZoomMax - newZoom);
x /= z;
y /= z;
setDisplayPosition(x, y, newZoom);
}
public void setDisplayPosition(int x, int y, int zoom) {
setDisplayPosition(new Point(getWidth() / 2, getHeight() / 2), x, y, zoom);
}
/**
* Changes the map pane so that the specified coordinate at the given zoom level is displayed on
* the map at the screen coordinate <code>mapPoint</code>.
*
* @param mapPoint point on the map denoted in pixels where the coordinate should be set
* @param lat latitude of the specified coordinate
* @param lon longitude of the specified coordinate
* @param zoom {@link #MIN_ZOOM} <= zoom level <= {@link TileSource#getMaxZoom()}
*/
public void setDisplayPositionByLatLon(Point mapPoint, double lat, double lon, int zoom) {
int x = OsmMercator.LonToX(lon, zoom);
int y = OsmMercator.LatToY(lat, zoom);
setDisplayPosition(mapPoint, x, y, zoom);
}