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Code Issues 4 Releases Wiki Activity

Add extra information in graph.

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Holt59 2018-03-02 23:48:32 +01:00
parent 2e7a1c564a
commit ae082d0b8a
6 changed files with 82 additions and 232 deletions
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33
src/main/org/insa/graph/Graph.java
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@ -14,14 +14,25 @@ public class Graph {
// Nodes of the graph.
private final List<Node> nodes;
// Graph information of this graph.
private final GraphInformation graphInfo;
/**
* @param mapId ID of this graph.
* @param list List of nodes for this graph.
*/
public Graph(String mapId, String mapName, List<Node> list) {
public Graph(String mapId, String mapName, List<Node> list, GraphInformation graphInformation) {
this.mapId = mapId;
this.mapName = mapName;
this.nodes = list;
this.graphInfo = graphInformation;
}
/**
* @return GraphInformation of this graph.
*/
public GraphInformation getGraphInformation() {
return this.graphInfo;
}
/**
@ -31,26 +42,6 @@ public class Graph {
return Collections.unmodifiableList(nodes);
}
/**
* Find the closet node to the given point.
*
* @param point
*
* @return Closest node to the given point.
*/
public Node findClosestNode(Point point) {
Node node = null;
double minDis = Double.POSITIVE_INFINITY;
for (int n = 0; n < nodes.size(); ++n) {
double dis = point.distanceTo(nodes.get(n).getPoint());
if (dis < minDis) {
node = nodes.get(n);
minDis = dis;
}
}
return node;
}
/**
* @return Map ID of this graph.
*/

39
src/main/org/insa/graph/GraphInformation.java Normal file
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@ -0,0 +1,39 @@
package org.insa.graph;
/**
* Utility class that stores some information for a graph that are no easy to
* access quickly.
*
*/
public class GraphInformation {
// Maximum speed on this graph (in kmph).
private final int maximumSpeed;
// Maximum length of any arc on this graph.
private final int maximumLength;
/**
* @param maximumSpeed
* @param maximumLength
*/
public GraphInformation(int maximumSpeed, int maximumLength) {
this.maximumLength = maximumLength;
this.maximumSpeed = maximumSpeed;
}
/**
* @return Maximum speed of any arc in the graph.
*/
public int getMaximumSpeed() {
return this.maximumSpeed;
}
/**
* @return Maximum length of any arc in the graph.
*/
public int getMaximumLength() {
return this.maximumLength;
}
}

197
src/main/org/insa/graph/io/BinaryGraphReaderInsa2016.java
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@ -1,197 +0,0 @@
package org.insa.graph.io;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import org.insa.graph.Arc;
import org.insa.graph.Graph;
import org.insa.graph.Node;
import org.insa.graph.Point;
import org.insa.graph.RoadInformation;
import org.insa.graph.RoadInformation.AccessRestriction;
import org.insa.graph.RoadInformation.RoadType;
public class BinaryGraphReaderInsa2016 extends BinaryReader implements GraphReader {
// Map version and magic number targeted for this reader.
private static final int VERSION = 4;
private static final int MAGIC_NUMBER = 0xbacaff;
/**
* Convert a character to its corresponding road type.
*
* @param ch Character to convert.
*
* @return Road type corresponding to ch.
*
* @see http://wiki.openstreetmap.org/wiki/Highway_tag_usage.
*/
public static RoadType toRoadType(char ch) {
switch (ch) {
case 'a':
return RoadType.MOTORWAY;
case 'b':
return RoadType.TRUNK;
case 'c':
return RoadType.PRIMARY;
case 'd':
return RoadType.SECONDARY;
case 'e':
return RoadType.MOTORWAY_LINK;
case 'f':
return RoadType.TRUNK_LINK;
case 'g':
return RoadType.PRIMARY_LINK;
case 'h':
return RoadType.SECONDARY_LINK;
case 'i':
return RoadType.TERTIARY;
case 'j':
return RoadType.RESIDENTIAL;
case 'k':
return RoadType.UNCLASSIFIED;
case 'l':
return RoadType.ROAD;
case 'm':
return RoadType.LIVING_STREET;
case 'n':
return RoadType.SERVICE;
case 'o':
return RoadType.ROUNDABOUT;
case 'z':
return RoadType.COASTLINE;
}
return RoadType.UNCLASSIFIED;
}
/**
* Create a new BinaryGraphReader using the given DataInputStream.
*
* @param dis
*/
public BinaryGraphReaderInsa2016(DataInputStream dis) {
super(MAGIC_NUMBER, VERSION, dis);
}
@Override
public Graph read() throws IOException {
// Read and check magic number and file version.
checkMagicNumberOrThrow(dis.readInt());
checkVersionOrThrow(dis.readInt());
// Read map id.
int mapId = dis.readInt();
// Read zone.
int graphZone = dis.readInt();
// Number of descriptors and nodes.
int nbDesc = dis.readInt();
int nbNodes = dis.readInt();
// Number of successors for each nodes.
int[] nbSuccessors = new int[nbNodes];
// Construct an array list with initial capacity of nbNodes.
ArrayList<Node> nodes = new ArrayList<Node>(nbNodes);
// Read nodes.
for (int node = 0; node < nbNodes; ++node) {
float longitude = ((float) dis.readInt()) / 1E6f;
float latitude = ((float) dis.readInt()) / 1E6f;
nbSuccessors[node] = dis.readUnsignedByte();
nodes.add(new Node(node, new Point(longitude, latitude)));
}
// Check format.
checkByteOrThrow(255);
// Read descriptors.
RoadInformation[] descs = new RoadInformation[nbDesc];
// Read
for (int descr = 0; descr < nbDesc; ++descr) {
descs[descr] = readRoadInformation();
}
// Check format.
checkByteOrThrow(254);
// Read successors and convert to arcs.
for (int node = 0; node < nbNodes; ++node) {
for (int succ = 0; succ < nbSuccessors[node]; ++succ) {
// Read destination zone.
int destZone = dis.readUnsignedByte();
// Read target node number.
int destNode = this.read24bits();
// Read information number.
int descrNum = this.read24bits();
// Length of the arc.
int length = dis.readUnsignedShort();
// Number of segments.
int nbSegments = dis.readUnsignedShort();
// Chain of points corresponding to the segments.
ArrayList<Point> points = new ArrayList<Point>(nbSegments + 2);
points.add(nodes.get(node).getPoint());
for (int seg = 0; seg < nbSegments; ++seg) {
Point lastPoint = points.get(points.size() - 1);
float dlon = (dis.readShort()) / 2.0e5f;
float dlat = (dis.readShort()) / 2.0e5f;
points.add(new Point(lastPoint.getLongitude() + dlon,
lastPoint.getLatitude() + dlat));
}
points.add(nodes.get(destNode).getPoint());
if (graphZone == destZone) {
RoadInformation info = descs[descrNum];
Node orig = nodes.get(node);
Node dest = nodes.get(destNode);
// Add successor to initial arc.
new Arc(orig, dest, length, info, points);
// And reverse arc if its a two-way road.
if (!info.isOneWay()) {
// Add without segments.
ArrayList<Point> rPoints = new ArrayList<Point>(points);
Collections.reverse(rPoints);
new Arc(dest, orig, length, info, rPoints);
}
}
}
}
// Check format.
checkByteOrThrow(253);
return new Graph(Integer.toHexString(mapId), "", nodes);
}
/**
* Read the next road information from the stream.
*
* @throws IOException
*/
private RoadInformation readRoadInformation() throws IOException {
char type = (char) dis.readUnsignedByte();
int x = dis.readUnsignedByte();
return new RoadInformation(toRoadType(type), new AccessRestriction(), (x & 0x80) > 0,
(x & 0x7F) * 5, dis.readUTF());
}
}

24
src/main/org/insa/graph/io/BinaryGraphReaderInsa2018.java
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@ -9,6 +9,7 @@ import java.util.Map;
import org.insa.graph.Arc;
import org.insa.graph.Graph;
import org.insa.graph.GraphInformation;
import org.insa.graph.Node;
import org.insa.graph.Point;
import org.insa.graph.RoadInformation;
@ -63,8 +64,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
allowedModes.put(AccessMode.MOTORCAR, (access & MASK_MOTORCAR) != 0);
allowedModes.put(AccessMode.BUS, (access & MASK_BUS) != 0);
return new AccessRestriction((access & MASK_PRIVATE) != 0,
(access & MASK_PUBLIC_TRANSPORT) != 0, allowedModes);
return new AccessRestriction((access & MASK_PRIVATE) != 0, (access & MASK_PUBLIC_TRANSPORT) != 0, allowedModes);
}
/**
@ -138,9 +138,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
mapId = "0x" + Integer.toHexString(dis.readInt());
}
else {
byte[] byteId = new byte[MAP_ID_FIELD_LENGTH];
dis.read(byteId);
mapId = new String(byteId, "UTF-8");
mapId = readFixedLengthString(MAP_ID_FIELD_LENGTH, "UTF-8");
mapName = dis.readUTF();
}
@ -177,16 +175,21 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
// Read
observers.forEach((observer) -> observer.notifyStartReadingDescriptors(nbDesc));
int maxSpeed = 0;
for (int descr = 0; descr < nbDesc; ++descr) {
final RoadInformation roadinf = readRoadInformation();
descs[descr] = roadinf;
observers.forEach((observer) -> observer.notifyNewDescriptorRead(roadinf));
// Update max speed
maxSpeed = Math.max(roadinf.getMaximumSpeed(), maxSpeed);
}
// Check format.
checkByteOrThrow(254);
// Read successors and convert to arcs.
int maxLength = 0;
final int copyNbTotalSuccesors = nbTotalSuccessors; // Stupid Java...
observers.forEach((observer) -> observer.notifyStartReadingArcs(copyNbTotalSuccesors));
for (int node = 0; node < nbNodes; ++node) {
@ -200,6 +203,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
// Length of the arc.
int length = dis.readUnsignedShort();
maxLength = Math.max(length, maxLength);
// Number of segments.
int nbSegments = dis.readUnsignedShort();
@ -214,8 +218,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
float dlon = (dis.readShort()) / 2.0e5f;
float dlat = (dis.readShort()) / 2.0e5f;
points.add(new Point(lastPoint.getLongitude() + dlon,
lastPoint.getLatitude() + dlat));
points.add(new Point(lastPoint.getLongitude() + dlon, lastPoint.getLatitude() + dlat));
}
points.add(nodes.get(destNode).getPoint());
@ -243,7 +246,9 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
observers.forEach((observer) -> observer.notifyEndReading());
return new Graph(mapId, mapName, nodes);
this.dis.close();
return new Graph(mapId, mapName, nodes, new GraphInformation(maxSpeed, maxLength));
}
/**
@ -258,8 +263,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
if (getCurrentVersion() >= 6) {
access = toAccessInformation(dis.readUnsignedShort());
}
return new RoadInformation(toRoadType(type), access, (x & 0x80) > 0, (x & 0x7F) * 5,
dis.readUTF());
return new RoadInformation(toRoadType(type), access, (x & 0x80) > 0, (x & 0x7F) * 5, dis.readUTF());
}
}

5
src/main/org/insa/graph/io/BinaryPathReader.java
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@ -26,10 +26,7 @@ public class BinaryPathReader extends BinaryReader implements PathReader {
checkVersionOrThrow(dis.readInt());
// Read map ID and check against graph.
byte[] mapIdBytes = new byte[BinaryGraphReaderInsa2018.MAP_ID_FIELD_LENGTH];
dis.read(mapIdBytes);
String mapId = new String(mapIdBytes, "UTF-8");
String mapId = readFixedLengthString(BinaryGraphReaderInsa2018.MAP_ID_FIELD_LENGTH, "UTF-8");
if (!mapId.equals(graph.getMapId())) {
throw new MapMismatchException(mapId, graph.getMapId());

16
src/main/org/insa/graph/io/BinaryReader.java
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@ -76,6 +76,22 @@ public abstract class BinaryReader {
}
}
/**
* Read an bytes array of fixed length from the input and convert it to a string
* using the given charset, removing any trailing '\0'.
*
* @param length
* @param charset
*
* @return an UTF-8 string read from the input.
* @throws IOException
*/
protected String readFixedLengthString(int length, String charset) throws IOException {
byte[] bytes = new byte[length];
this.dis.read(bytes);
return new String(bytes, "UTF-8").trim();
}
/**
* Read 24 bits from the stream and return the corresponding integer value.
*