HillIndexGraphStorageBuilder.java
/* This file is part of Openrouteservice.
*
* Openrouteservice is free software; you can redistribute it and/or modify it under the terms of the
* GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License along with this library;
* if not, see <https://www.gnu.org/licenses/>.
*/
package org.heigit.ors.routing.graphhopper.extensions.storages.builders;
import com.graphhopper.GraphHopper;
import com.graphhopper.reader.ReaderWay;
import com.graphhopper.storage.GraphExtension;
import com.graphhopper.util.EdgeIteratorState;
import com.graphhopper.util.FetchMode;
import com.graphhopper.util.PointList;
import org.heigit.ors.routing.graphhopper.extensions.storages.HillIndexGraphStorage;
import org.heigit.ors.routing.util.HillIndexCalculator;
public class HillIndexGraphStorageBuilder extends AbstractGraphStorageBuilder {
private HillIndexGraphStorage storage;
private HillIndexCalculator hillIndexCalc;
public GraphExtension init(GraphHopper graphhopper) throws Exception {
if (storage != null)
throw new Exception("GraphStorageBuilder has been already initialized.");
if (graphhopper.hasElevation()) {
storage = new HillIndexGraphStorage(parameters);
hillIndexCalc = new HillIndexCalculator();
return storage;
}
throw new Exception("HillIndexGraphStorageBuilder cannot be initialized since elevation is deactivated for this profile.");
}
public void processWay(ReaderWay way) {
// do nothing
}
public void processEdge(ReaderWay way, EdgeIteratorState edge) {
boolean revert = edge.getBaseNode() > edge.getAdjNode();
PointList points = edge.fetchWayGeometry(FetchMode.ALL);
byte hillIndex = hillIndexCalc.getHillIndex(points, false);
byte reverseHillIndex = hillIndexCalc.getHillIndex(points, true);
if (revert)
storage.setEdgeValue(edge.getEdge(), reverseHillIndex, hillIndex);
else
storage.setEdgeValue(edge.getEdge(), hillIndex, reverseHillIndex);
}
@Override
public String getName() {
return "HillIndex";
}
}