public void prepare() {
boolean tmpPrepare = doPrepare && prepare != null;
graph.getProperties().put("prepare.done", tmpPrepare);
if (tmpPrepare) {
if (prepare instanceof PrepareContractionHierarchies
&& encodingManager.getVehicleCount() > 1) {
throw new IllegalArgumentException(
"Contraction hierarchies preparation "
+ "requires (at the moment) only one vehicle. But was:"
+ encodingManager);
}
logger.info("calling prepare.doWork ... (" + Helper.getMemInfo() + ")");
prepare.doWork();
}
}
private void postProcessing() {
encodingManager = graph.getEncodingManager();
if (chUsage) {
PrepareContractionHierarchies tmpPrepareCH = new PrepareContractionHierarchies();
FlagEncoder encoder = encodingManager.getSingle();
if (chFast) tmpPrepareCH.setType(new FastestCalc(encoder));
else tmpPrepareCH.setType(new ShortestCalc());
tmpPrepareCH.setVehicle(encoder);
tmpPrepareCH
.setPeriodicUpdates(periodicUpdates)
.setLazyUpdates(lazyUpdates)
.setNeighborUpdates(neighborUpdates);
prepare = tmpPrepareCH;
prepare.setGraph(graph);
}
if ("false".equals(graph.getProperties().get("prepare.done"))) prepare();
}
@Override
public GHResponse route(GHRequest request) {
request.check();
StopWatch sw = new StopWatch().start();
GHResponse rsp = new GHResponse();
if (!setSupportsVehicle(request.getVehicle())) {
rsp.addError(
new IllegalArgumentException(
"Vehicle "
+ request.getVehicle()
+ " unsupported. Supported are: "
+ getEncodingManager()));
return rsp;
}
EdgeFilter edgeFilter = new DefaultEdgeFilter(encodingManager.getEncoder(request.getVehicle()));
int from =
index
.findClosest(request.getFrom().lat, request.getFrom().lon, edgeFilter)
.getClosestNode();
int to =
index.findClosest(request.getTo().lat, request.getTo().lon, edgeFilter).getClosestNode();
String debug = "idLookup:" + sw.stop().getSeconds() + "s";
if (from < 0)
rsp.addError(new IllegalArgumentException("Cannot find point 1: " + request.getFrom()));
if (to < 0)
rsp.addError(new IllegalArgumentException("Cannot find point 2: " + request.getTo()));
if (from == to) rsp.addError(new IllegalArgumentException("Point 1 is equal to point 2"));
sw = new StopWatch().start();
RoutingAlgorithm algo = null;
if (chUsage) {
if (request.getAlgorithm().equals("dijkstrabi")) algo = prepare.createAlgo();
else if (request.getAlgorithm().equals("astarbi"))
algo = ((PrepareContractionHierarchies) prepare).createAStar();
else
rsp.addError(
new IllegalStateException(
"Only dijkstrabi and astarbi is supported for LevelGraph (using contraction hierarchies)!"));
} else {
prepare =
NoOpAlgorithmPreparation.createAlgoPrepare(
graph,
request.getAlgorithm(),
encodingManager.getEncoder(request.getVehicle()),
request.getType());
algo = prepare.createAlgo();
}
if (rsp.hasErrors()) {
return rsp;
}
debug += ", algoInit:" + sw.stop().getSeconds() + "s";
sw = new StopWatch().start();
Path path = algo.calcPath(from, to);
debug +=
", "
+ algo.getName()
+ "-routing:"
+ sw.stop().getSeconds()
+ "s"
+ ", "
+ path.getDebugInfo();
PointList points = path.calcPoints();
simplifyRequest = request.getHint("simplifyRequest", simplifyRequest);
if (simplifyRequest) {
sw = new StopWatch().start();
int orig = points.getSize();
double minPathPrecision = request.getHint("douglas.minprecision", 1d);
if (minPathPrecision > 0) {
new DouglasPeucker().setMaxDistance(minPathPrecision).simplify(points);
}
debug +=
", simplify (" + orig + "->" + points.getSize() + "):" + sw.stop().getSeconds() + "s";
}
enableInstructions = request.getHint("instructions", enableInstructions);
if (enableInstructions) {
sw = new StopWatch().start();
rsp.setInstructions(path.calcInstructions());
debug += ", instructions:" + sw.stop().getSeconds() + "s";
}
return rsp.setPoints(points)
.setDistance(path.getDistance())
.setTime(path.getTime())
.setDebugInfo(debug);
}