private Point getUpperLeftCornerOfCenterMapTileInScreen(
final int[] centerMapTileCoords, final int tileSizePx, final Point reuse) {
if (OpenStreetMapViewConstants.DEBUGMODE)
Log.d("RMAPS-Me", "YandexTrafficOverlay getUpperLeftCornerOfCenterMapTileInScreen is Called");
final Point out = (reuse != null) ? reuse : new Point();
final int viewWidth = mMapView.getWidth();
final int viewWidth_2 = viewWidth / 2;
final int viewHeight = mMapView.getHeight();
final int viewHeight_2 = viewHeight / 2;
/*
* Calculate the Latitude/Longitude on the left-upper ScreenCoords of the center MapTile. So in the end we can
* determine which MapTiles we additionally need next to the centerMapTile.
*/
final BoundingBoxE6 bb =
Util.getBoundingBoxFromMapTile(
centerMapTileCoords, mMapView.getZoomLevel(), mRendererInfo.PROJECTION);
final float[] relativePositionInCenterMapTile =
bb.getRelativePositionOfGeoPointInBoundingBoxWithLinearInterpolation(
mMapView.getMapCenterLatitudeE6(), mMapView.getMapCenterLongitudeE6(), null);
final int centerMapTileScreenLeft =
viewWidth_2 - (int) (0.5f + (relativePositionInCenterMapTile[1] * tileSizePx));
final int centerMapTileScreenTop =
viewHeight_2 - (int) (0.5f + (relativePositionInCenterMapTile[0] * tileSizePx));
out.set(centerMapTileScreenLeft, centerMapTileScreenTop);
return out;
}
// TODO rework zoomToSpan
public void zoomToSpan(final int reqLatSpan, final int reqLonSpan) {
if (reqLatSpan <= 0 || reqLonSpan <= 0) return;
final BoundingBoxE6 bb = this.mOsmv.getVisibleBoundingBoxE6();
final int curZoomLevel = this.mOsmv.getZoomLevel();
final int curLatSpan = bb.getLatitudeSpanE6();
final int curLonSpan = bb.getLongitudeSpanE6();
final float diffNeededLat = (float) reqLatSpan / curLatSpan; // i.e. 600/500 = 1,2
final float diffNeededLon = (float) reqLonSpan / curLonSpan; // i.e. 300/400 = 0,75
final float diffNeeded = Math.max(diffNeededLat, diffNeededLon); // i.e. 1,2
if (diffNeeded > 1) { // Zoom Out
this.mOsmv.setZoomLevel(curZoomLevel - MyMath.getNextSquareNumberAbove(diffNeeded));
} else if (diffNeeded < 0.5) { // Can Zoom in
this.mOsmv.setZoomLevel(curZoomLevel + MyMath.getNextSquareNumberAbove(1 / diffNeeded) - 1);
}
}
public void zoomToSpan(BoundingBoxE6 bb) {
zoomToSpan(bb.getLatitudeSpanE6(), bb.getLongitudeSpanE6());
}
