269 lines
9.2 KiB
Java
269 lines
9.2 KiB
Java
package org.insa.graph.io;
|
|
|
|
import java.io.DataInputStream;
|
|
import java.io.IOException;
|
|
import java.util.ArrayList;
|
|
import java.util.Collections;
|
|
import java.util.EnumMap;
|
|
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;
|
|
import org.insa.graph.RoadInformation.AccessMode;
|
|
import org.insa.graph.RoadInformation.AccessRestriction;
|
|
import org.insa.graph.RoadInformation.RoadType;
|
|
|
|
public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphReader {
|
|
|
|
// Map version and magic number targeted for this reader.
|
|
private static final int VERSION = 5;
|
|
private static final int MAGIC_NUMBER = 0x208BC3B3;
|
|
|
|
// Length of the map id field (in bytes)
|
|
protected static final int MAP_ID_FIELD_LENGTH = 32;
|
|
|
|
// Some masks...
|
|
private static final int MASK_UNKNOWN = 0x01;
|
|
private static final int MASK_PRIVATE = 0x02;
|
|
@SuppressWarnings("unused")
|
|
private static final int MASK_AGRICULTURAL = 0x04;
|
|
@SuppressWarnings("unused")
|
|
private static final int MASK_SERVICE = 0x08;
|
|
private static final int MASK_PUBLIC_TRANSPORT = 0x10;
|
|
|
|
private static final int MASK_FOOT = 0x01 << 8;
|
|
private static final int MASK_BICYCLE = 0x02 << 8;
|
|
private static final int MASK_MOTORCYCLE = 0x0C << 8;
|
|
private static final int MASK_SMALL_MOTORCYCLE = 0x08 << 8;
|
|
private static final int MASK_MOTORCAR = 0x10 << 8;
|
|
private static final int MASK_BUS = 0x20 << 8;
|
|
|
|
/**
|
|
* Create a new access information by parsing the given value.
|
|
*
|
|
* @param access
|
|
* @return
|
|
*/
|
|
protected static AccessRestriction toAccessInformation(int access) {
|
|
|
|
// Unknown -> Return default access information.
|
|
if ((access & MASK_UNKNOWN) != 0) {
|
|
return new AccessRestriction();
|
|
}
|
|
|
|
Map<AccessMode, Boolean> allowedModes = new EnumMap<>(AccessMode.class);
|
|
|
|
allowedModes.put(AccessMode.FOOT, (access & MASK_FOOT) != 0);
|
|
allowedModes.put(AccessMode.BICYCLE, (access & MASK_BICYCLE) != 0);
|
|
allowedModes.put(AccessMode.SMALL_MOTORCYCLE, (access & MASK_SMALL_MOTORCYCLE) != 0);
|
|
allowedModes.put(AccessMode.MOTORCYCLE, (access & MASK_MOTORCYCLE) != 0);
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
protected 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 BinaryGraphReaderInsa2018(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.
|
|
String mapId;
|
|
String mapName = "";
|
|
|
|
if (getCurrentVersion() < 6) {
|
|
mapId = "0x" + Integer.toHexString(dis.readInt());
|
|
}
|
|
else {
|
|
mapId = readFixedLengthString(MAP_ID_FIELD_LENGTH, "UTF-8");
|
|
mapName = dis.readUTF();
|
|
}
|
|
|
|
observers.forEach((observer) -> observer.notifyStartReading(mapId));
|
|
|
|
// Number of descriptors and nodes.
|
|
int nbDesc = dis.readInt();
|
|
int nbNodes = dis.readInt();
|
|
|
|
// Number of successors for each nodes.
|
|
int[] nbSuccessors = new int[nbNodes];
|
|
int nbTotalSuccessors = 0;
|
|
|
|
// Construct an array list with initial capacity of nbNodes.
|
|
ArrayList<Node> nodes = new ArrayList<Node>(nbNodes);
|
|
|
|
// Read nodes.
|
|
observers.forEach((observer) -> observer.notifyStartReadingNodes(nbNodes));
|
|
for (int node = 0; node < nbNodes; ++node) {
|
|
float longitude = ((float) dis.readInt()) / 1E6f;
|
|
float latitude = ((float) dis.readInt()) / 1E6f;
|
|
nbSuccessors[node] = dis.readUnsignedByte();
|
|
nbTotalSuccessors += nbSuccessors[node];
|
|
final Node aNode = new Node(node, new Point(longitude, latitude));
|
|
nodes.add(aNode);
|
|
observers.forEach((observer) -> observer.notifyNewNodeRead(aNode));
|
|
}
|
|
|
|
// Check format.
|
|
checkByteOrThrow(255);
|
|
|
|
// Read descriptors.
|
|
RoadInformation[] descs = new RoadInformation[nbDesc];
|
|
|
|
// 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) {
|
|
for (int succ = 0; succ < nbSuccessors[node]; ++succ) {
|
|
|
|
// Read target node number.
|
|
int destNode = this.read24bits();
|
|
|
|
// Read information number.
|
|
int descrNum = this.read24bits();
|
|
|
|
// Length of the arc.
|
|
int length = dis.readUnsignedShort();
|
|
maxLength = Math.max(length, maxLength);
|
|
|
|
// 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());
|
|
|
|
RoadInformation info = descs[descrNum];
|
|
Node orig = nodes.get(node);
|
|
Node dest = nodes.get(destNode);
|
|
|
|
// Add successor to initial arc.
|
|
Arc 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);
|
|
}
|
|
observers.forEach((observer) -> observer.notifyNewArcRead(arc));
|
|
}
|
|
}
|
|
|
|
// Check format.
|
|
checkByteOrThrow(253);
|
|
|
|
observers.forEach((observer) -> observer.notifyEndReading());
|
|
|
|
this.dis.close();
|
|
|
|
return new Graph(mapId, mapName, nodes, new GraphInformation(maxSpeed, maxLength));
|
|
}
|
|
|
|
/**
|
|
* Read the next road information from the stream.
|
|
*
|
|
* @throws IOException
|
|
*/
|
|
private RoadInformation readRoadInformation() throws IOException {
|
|
char type = (char) dis.readUnsignedByte();
|
|
int x = dis.readUnsignedByte();
|
|
AccessRestriction access = new AccessRestriction();
|
|
if (getCurrentVersion() >= 6) {
|
|
access = toAccessInformation(dis.readUnsignedShort());
|
|
}
|
|
return new RoadInformation(toRoadType(type), access, (x & 0x80) > 0, (x & 0x7F) * 5, dis.readUTF());
|
|
}
|
|
|
|
}
|