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using ellipsoidal 'distanceBetween' instead of spherical haversine (MapUtils.getDistance) is a little more exact, also seems slightly faster

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sonora 2013-06-18 18:46:35 +02:00
parent d7c033de05
commit 0cf97ac820
1 changed files with 5 additions and 5 deletions
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OsmAnd/src/net/osmand/plus/activities/LocalIndexHelper.java
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@ -137,7 +137,7 @@ public class LocalIndexHelper {
int speedCount = 0; int speedCount = 0;
double totalSpeedSum = 0; double totalSpeedSum = 0;
//float[] calculations = new float[1]; float[] calculations = new float[1];
int points = 0; int points = 0;
for(int i = 0; i< result.tracks.size() ; i++){ for(int i = 0; i< result.tracks.size() ; i++){
@ -175,10 +175,10 @@ public class LocalIndexHelper {
diffElevationDown -= diff; diffElevationDown -= diff;
} }
} }
totalDistance += MapUtils.getDistance(prev.lat, prev.lon, point.lat, point.lon); //totalDistance += MapUtils.getDistance(prev.lat, prev.lon, point.lat, point.lon);
// using ellipsoidal 'distanceBetween' instead of spherical haversine (MapUtils.getDistance) should be more exact, but makes little practical difference: // using ellipsoidal 'distanceBetween' instead of spherical haversine (MapUtils.getDistance) is a little more exact, also seems slightly faster:
//net.osmand.Location.distanceBetween(prev.lat, prev.lon, point.lat, point.lon, calculations); net.osmand.Location.distanceBetween(prev.lat, prev.lon, point.lat, point.lon, calculations);
//totalDistance += calculations[0]; totalDistance += calculations[0];
} }
} }
} }