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Cleanup: mainly code formatting and made LocationIterator implement autoclosable.

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This commit is contained in:
Dennis Guse
2019-09-07 12:23:56 +02:00
parent 025dee6821
commit 87d92d25f9
104 changed files with 1076 additions and 1526 deletions
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src/main/java/de/dennisguse/opentracks/util/LocationUtils.java
+21 -17
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@@ -18,30 +18,30 @@ package de.dennisguse.opentracks.util;
import android.location.Location;
import android.util.Log;
import de.dennisguse.opentracks.content.Track;
import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import de.dennisguse.opentracks.content.Track;
/**
* Utility class for decimating tracks at a given level of precision.
*
* @author Leif Hendrik Wilden
*/
//TODO Cleanup: rename variables
public class LocationUtils {
private static final String TAG = LocationUtils.class.getSimpleName();
// 1 minute in milliseconds
private static final long MAX_LOCATION_AGE_MS = (long) (UnitConversions.MIN_TO_S
* UnitConversions.S_TO_MS);
private static final long MAX_LOCATION_AGE_MS = (long) (UnitConversions.MIN_TO_S * UnitConversions.S_TO_MS);
private LocationUtils() {
}
/**
* Computes the distance on the two sphere between the point c0 and the line
* segment c1 to c2.
* Computes the distance on the two sphere between the point c0 and the line segment c1 to c2.
*
* @param c0 the first coordinate
* @param c1 the beginning of the line segment
@@ -64,31 +64,36 @@ public class LocationUtils {
double s2s1lng = s2lng - s1lng;
final double u = ((s0lat - s1lat) * s2s1lat + (s0lng - s1lng) * s2s1lng)
/ (s2s1lat * s2s1lat + s2s1lng * s2s1lng);
if (u <= 0) {
return c0.distanceTo(c1);
}
if (u >= 1) {
return c0.distanceTo(c2);
}
Location sa = new Location("");
sa.setLatitude(c0.getLatitude() - c1.getLatitude());
sa.setLongitude(c0.getLongitude() - c1.getLongitude());
Location sb = new Location("");
sb.setLatitude(u * (c2.getLatitude() - c1.getLatitude()));
sb.setLongitude(u * (c2.getLongitude() - c1.getLongitude()));
return sa.distanceTo(sb);
}
/**
* Decimates the given locations for a given zoom level. This uses a
* Douglas-Peucker decimation algorithm.
* Decimates the given locations for a given zoom level.
* This uses a Douglas-Peucker decimation algorithm.
*
* @param tolerance in meters
* @param locations input
* @param decimated output
*/
private static void decimate(
double tolerance, ArrayList<Location> locations, ArrayList<Location> decimated) {
//TODO What was it used for? Sharing data with other apps?
private static void decimate(double tolerance, List<Location> locations, List<Location> decimated) {
final int n = locations.size();
if (n < 1) {
return;
@@ -153,16 +158,16 @@ public class LocationUtils {
}
/**
* Checks if a given location is a valid (i.e. physically possible) location
* on Earth. Note: The special separator locations (which have latitude = 100)
* will not qualify as valid. Neither will locations with lat=0 and lng=0 as
* these are most likely "bad" measurements which often cause trouble.
* Checks if a given location is a valid (i.e. physically possible) locationon Earth.
* Note: The special separator locations (which have latitude = 100) will not qualify as valid.
* Neither will locations with lat=0 and lng=0 as these are most likely "bad" measurements which often cause trouble.
*
* @param location the location to test
* @return true if the location is a valid location.
*/
public static boolean isValidLocation(Location location) {
return location != null && Math.abs(location.getLatitude()) <= 90
return location != null
&& Math.abs(location.getLatitude()) <= 90
&& Math.abs(location.getLongitude()) <= 180;
}
@@ -172,7 +177,6 @@ public class LocationUtils {
* @param location the location
*/
public static boolean isLocationOld(Location location) {
return !LocationUtils.isValidLocation(location)
|| (System.currentTimeMillis() - location.getTime() > MAX_LOCATION_AGE_MS);
return !LocationUtils.isValidLocation(location) || (System.currentTimeMillis() - location.getTime() > MAX_LOCATION_AGE_MS);
}
}