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Introduce reverse search parameter

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This commit is contained in:
Victor Shcherb 2011-07-03 21:24:13 +02:00
parent 90d574c04e
commit 5ad8716d7a
2 changed files with 37 additions and 25 deletions
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56
DataExtractionOSM/src/net/osmand/router/BinaryRoutePlanner.java
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@ -12,6 +12,7 @@ import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.PriorityQueue;
@ -32,7 +33,7 @@ public class BinaryRoutePlanner {
private final static boolean PRINT_TO_CONSOLE_ROUTE_INFORMATION_TO_TEST = true;
private final BinaryMapIndexReader[] map;
private static int DEFAULT_HEURISTIC_COEFFICIENT = 1;
private static int DEFAULT_HEURISTIC_COEFFICIENT = 3;
private static final Log log = LogUtil.getLog(BinaryRoutePlanner.class);
@ -159,6 +160,7 @@ public class BinaryRoutePlanner {
// measure time
ctx.timeToLoad = 0;
ctx.visitedSegments = 0;
boolean reverseWaySearch = false;
long startNanoTime = System.nanoTime();
// Initializing priority queue to visit way segments
@ -174,6 +176,11 @@ public class BinaryRoutePlanner {
TLongHashSet visitedSegments = new TLongHashSet();
if(reverseWaySearch){
RouteSegment t = start;
start = end;
end = t;
}
int targetEndX = end.road.getPoint31XTile(end.segmentEnd);
int targetEndY = end.road.getPoint31YTile(end.segmentEnd);
int startX = start.road.getPoint31XTile(start.segmentStart);
@ -220,37 +227,39 @@ public class BinaryRoutePlanner {
int middle = segment.segmentStart;
int middlex = road.getPoint31XTile(middle);
int middley = road.getPoint31YTile(middle);
// +/- diff from middle point
int d = 1;
boolean oneway = ctx.router.isOneWay(road.getHighwayAttributes());
boolean minus = true;
boolean plus = true;
boolean minusAllowed = !oneway || reverseWaySearch;
boolean plusAllowed = !oneway || !reverseWaySearch;
if(end.road.getId() == road.getId() && end.segmentStart == middle){
finalRoute = segment;
}
// +/- diff from middle point
int d = plusAllowed ? 1 : -1;
// Go through all point of the way and find ways to continue
while(finalRoute == null && ((!oneway && minus) || plus)) {
while(finalRoute == null && (minusAllowed || plusAllowed)) {
// 1. calculate point not equal to middle
// (algorithm should visit all point on way if it is not oneway)
int j = middle + d;
if(oneway){
if (!minusAllowed && d > 0) {
d++;
} else if (!plusAllowed && d < 0) {
d--;
} else {
if(d <= 0){
if (d <= 0){
d = -d + 1;
} else {
d = -d;
}
}
if(j < 0){
minus = false;
minusAllowed = false;
continue;
}
if(j >= road.getPointsLength()){
plus = false;
plusAllowed = false;
continue;
}
@ -281,7 +290,8 @@ public class BinaryRoutePlanner {
// 4. Route is found : collect all segments and prepare result
return prepareResult(ctx, start, end, startNanoTime, finalRoute);
return prepareResult(ctx, start, end, startNanoTime, finalRoute, !reverseWaySearch);
}
@ -380,7 +390,7 @@ public class BinaryRoutePlanner {
private List<RouteSegmentResult> prepareResult(RoutingContext ctx, RouteSegment start, RouteSegment end, long startNanoTime,
RouteSegment finalRoute) {
RouteSegment finalRoute, boolean reverseResult) {
List<RouteSegmentResult> result = new ArrayList<RouteSegmentResult>();
// Try to define direction of last movement and reverse start and end point for end if needed
int parentSegmentEnd = finalRoute != null && finalRoute.segmentStart <= end.segmentStart ?
@ -401,10 +411,6 @@ public class BinaryRoutePlanner {
res.endPointIndex = parentSegmentEnd;
res.startPointIndex = segment.segmentStart;
parentSegmentEnd = segment.parentSegmentEnd;
if (PRINT_TO_CONSOLE_ROUTE_INFORMATION_TO_TEST) {
// System.out.println(segment.road.name + " time to go " +
// (segment.distanceFromStart / 60) + " estimate time " + (segment.distanceToEnd / 60));
}
segment = segment.parentRoute;
// reverse start and end point for start if needed
@ -413,17 +419,23 @@ public class BinaryRoutePlanner {
}
// do not add segments consists from 1 point
if(res.startPointIndex != res.endPointIndex) {
if (PRINT_TO_CONSOLE_ROUTE_INFORMATION_TO_TEST) {
System.out.println("id=" + (res.object.getId() >> 1) + " start=" + res.startPointIndex + " end=" + res.endPointIndex);
}
result.add(0, res);
result.add(res);
}
res.startPoint = convertPoint(res.object, res.startPointIndex);
res.endPoint = convertPoint(res.object, res.endPointIndex);
}
if(reverseResult){
Collections.reverse(result);
}
if (PRINT_TO_CONSOLE_ROUTE_INFORMATION_TO_TEST) {
for (RouteSegmentResult res : result) {
System.out.println("id=" + (res.object.getId() >> 1) + " start=" + res.startPointIndex + " end=" + res.endPointIndex);
System.out.println("Name :" + res.object.getName());
}
}
ctx.timeToCalculate = (System.nanoTime() - startNanoTime);
log.info("Time to calculate : " + ctx.timeToCalculate / 1e6 +", time to load : " + ctx.timeToLoad / 1e6 + ", loaded tiles : " + ctx.loadedTiles.size() +
", visited segments " + ctx.visitedSegments );

6
DataExtractionOSM/src/net/osmand/router/CarRouter.java
View file

@ -39,9 +39,9 @@ public class CarRouter extends VehicleRouter {
autoPriorityValues.put("primary_link", 1d);
autoPriorityValues.put("secondary", 1.0d);
autoPriorityValues.put("secondary_link", 1.0d);
autoPriorityValues.put("tertiary", 1.0d);
autoPriorityValues.put("tertiary_link", 1.0d);
autoPriorityValues.put("residential", 0.8d);
autoPriorityValues.put("tertiary", 0.85d);
autoPriorityValues.put("tertiary_link", 0.85d);
autoPriorityValues.put("residential", 0.7d);
autoPriorityValues.put("service", 0.6d);
autoPriorityValues.put("unclassified", 0.4d);
autoPriorityValues.put("road", 0.4d);