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Merge pull request #644 from afischerdev/srtm-gen

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Elevation raster generation (*.bef files)
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afischerdev 2024-04-03 14:29:34 +02:00 • committed by GitHub
commit 6330325d04
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17 changed files with 1418 additions and 782 deletions
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21
brouter-core/src/main/java/btools/router/RoutingEngine.java
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@ -20,6 +20,7 @@ import btools.mapaccess.OsmLink;
import btools.mapaccess.OsmLinkHolder;
import btools.mapaccess.OsmNode;
import btools.mapaccess.OsmNodePairSet;
import btools.mapaccess.OsmPos;
import btools.util.CompactLongMap;
import btools.util.SortedHeap;
import btools.util.StackSampler;
@ -907,11 +908,12 @@ public class RoutingEngine extends Thread {
if (ele_last != Short.MIN_VALUE) {
ehb = ehb + (ele_last - ele) * eleFactor;
}
double filter = elevationFilter(n);
if (ehb > 0) {
ascend += ehb;
ehb = 0;
} else if (ehb < -10) {
ehb = -10;
} else if (ehb < filter) {
ehb = filter;
}
}
@ -948,6 +950,21 @@ public class RoutingEngine extends Thread {
logInfo("filtered ascend = " + t.ascend);
}
/**
* find the elevation type for position
* to determine the filter value
*
* @param n the point
* @return the filter value for 1sec / 3sec elevation source
*/
double elevationFilter(OsmPos n) {
if (nodesCache != null) {
int r = nodesCache.getElevationType(n.getILon(), n.getILat());
if (r == 1) return -5.;
}
return -10.;
}
// geometric position matching finding the nearest routable way-section
private void matchWaypointsToNodes(List<MatchedWaypoint> unmatchedWaypoints) {
resetCache(false);