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Merge "commons" into the project root directory

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This commit is contained in:
Yusuke Matsubara 2016-07-02 16:20:43 +09:00
parent d42db0612e
commit b4231bbfdc
324 changed files with 22 additions and 23 deletions
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app/src/main/java/fr/free/nrw/commons/caching/CacheController.java Normal file
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package fr.free.nrw.commons.caching;
import android.util.Log;
import com.github.varunpant.quadtree.Point;
import com.github.varunpant.quadtree.QuadTree;
import java.util.ArrayList;
import java.util.List;
import fr.free.nrw.commons.upload.MwVolleyApi;
public class CacheController {
private double x, y;
private QuadTree quadTree;
private Point[] pointsFound;
private double xMinus, xPlus, yMinus, yPlus;
private static final String TAG = CacheController.class.getName();
private static final int EARTH_RADIUS = 6378137;
public CacheController() {
quadTree = new QuadTree(-180, -90, +180, +90);
}
public void setQtPoint(double decLongitude, double decLatitude) {
x = decLongitude;
y = decLatitude;
Log.d(TAG, "New QuadTree created");
Log.d(TAG, "X (longitude) value: " + x + ", Y (latitude) value: " + y);
}
public void cacheCategory() {
List<String> pointCatList = new ArrayList<String>();
if (MwVolleyApi.GpsCatExists.getGpsCatExists() == true) {
pointCatList.addAll(MwVolleyApi.getGpsCat());
Log.d(TAG, "Categories being cached: " + pointCatList);
} else {
Log.d(TAG, "No categories found, so no categories cached");
}
quadTree.set(x, y, pointCatList);
}
public List findCategory() {
//Convert decLatitude and decLongitude to a coordinate offset range
convertCoordRange();
pointsFound = quadTree.searchWithin(xMinus, yMinus, xPlus, yPlus);
List<String> displayCatList = new ArrayList<String>();
Log.d(TAG, "Points found in quadtree: " + pointsFound);
if (pointsFound.length != 0) {
Log.d(TAG, "Entering for loop");
for (Point point : pointsFound) {
Log.d(TAG, "Nearby point: " + point.toString());
displayCatList = (List<String>)point.getValue();
Log.d(TAG, "Nearby cat: " + point.getValue());
}
Log.d(TAG, "Categories found in cache: " + displayCatList.toString());
} else {
Log.d(TAG, "No categories found in cache");
}
return displayCatList;
}
//Based on algorithm at http://gis.stackexchange.com/questions/2951/algorithm-for-offsetting-a-latitude-longitude-by-some-amount-of-meters
public void convertCoordRange() {
//Position, decimal degrees
double lat = y;
double lon = x;
//offsets in meters
double offset = 100;
//Coordinate offsets in radians
double dLat = offset/EARTH_RADIUS;
double dLon = offset/(EARTH_RADIUS*Math.cos(Math.PI*lat/180));
//OffsetPosition, decimal degrees
yPlus = lat + dLat * 180/Math.PI;
yMinus = lat - dLat * 180/Math.PI;
xPlus = lon + dLon * 180/Math.PI;
xMinus = lon - dLon * 180/Math.PI;
Log.d(TAG, "Search within: xMinus=" + xMinus + ", yMinus=" + yMinus + ", xPlus=" + xPlus + ", yPlus=" + yPlus);
}
}