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package cgeo.geocaching.sorting;
import cgeo.geocaching.cgBase;
import cgeo.geocaching.cgCache;
import cgeo.geocaching.geopoint.Geopoint;
/**
* sorts caches by distance to current position
*
*/
public class DistanceComparator extends AbstractCacheComparator {
private Geopoint coords = null;
public DistanceComparator() {
// nothing
}
public DistanceComparator(final Geopoint coords) {
setCoords(coords);
}
public void setCoords(final Geopoint coords) {
this.coords = coords;
}
@Override
protected boolean canCompare(cgCache cache1, cgCache cache2) {
return true;
}
@Override
protected int compareCaches(final cgCache cache1, final cgCache cache2) {
if ((cache1.coords == null || cache2.coords == null)
&& cache1.distance != null && cache2.distance != null) {
if (cache1.distance < cache2.distance) {
return -1;
} else if (cache1.distance > cache2.distance) {
return 1;
} else {
return 0;
}
} else {
if (cache1.coords == null) {
return 1;
}
if (cache2.coords == null) {
return -1;
}
Double distance1 = cgBase.getDistance(coords, cache1.coords);
Double distance2 = cgBase.getDistance(coords, cache2.coords);
if (distance1 < distance2) {
return -1;
} else if (distance1 > distance2) {
return 1;
}
}
return 0;
}
}
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