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Update javadoc, clean Arc implementation.

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This commit is contained in:
Mikael Capelle 2018-03-07 16:51:03 +01:00
parent 1454e651dc
commit 04bddb0d34
11 changed files with 174 additions and 132 deletions
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5
src/main/org/insa/graph/Arc.java
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@ -7,6 +7,11 @@ import java.util.List;
* class to allow us to represent two-ways roads in a memory efficient manner
* (without having to duplicate attributes).
*
* Arc should never be created manually but always using the
* {@link Node#linkNodes(Node, Node, int, RoadInformation, java.util.ArrayList)}
* method to ensure proper instantiation of the {@link ArcForward} and
* {@link ArcBackward} classes.
*
* @see ArcForward
* @see ArcBackward
*

6
src/main/org/insa/graph/ArcBackward.java
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@ -10,7 +10,7 @@ import java.util.List;
* the original arc.
*
*/
public class ArcBackward implements Arc {
class ArcBackward implements Arc {
// Original arc
private final ArcForward originalArc;
@ -19,9 +19,9 @@ public class ArcBackward implements Arc {
* Create a new backward arc which corresponds to the reverse arc of the given
* arc.
*
* @param originalArc
* @param originalArc Original forwarc arc corresponding to this backward arc.
*/
public ArcBackward(ArcForward originalArc) {
protected ArcBackward(ArcForward originalArc) {
this.originalArc = originalArc;
this.originalArc.getDestination().addSuccessor(this);
}

32
src/main/org/insa/graph/ArcForward.java
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@ -24,7 +24,7 @@ public class ArcForward implements Arc {
private final ArrayList<Point> points;
/**
* Create a new arc and automatically link it with the given origin.
* Create a new ArcForward with the given attributes.
*
* @param origin Origin of this arc.
* @param dest Destination of this arc.
@ -32,54 +32,44 @@ public class ArcForward implements Arc {
* @param roadInformation Road information for this arc.
* @param points Points representing this arc.
*/
public ArcForward(Node origin, Node dest, int length, RoadInformation roadInformation,
protected ArcForward(Node origin, Node dest, int length, RoadInformation roadInformation,
ArrayList<Point> points) {
this.origin = origin;
this.destination = dest;
this.length = length;
this.info = roadInformation;
this.points = points;
origin.addSuccessor(this);
}
/**
* {@inheritDoc}
*/
@Override
public Node getOrigin() {
return origin;
}
/**
* {@inheritDoc}
*/
@Override
public Node getDestination() {
return destination;
}
/**
* {@inheritDoc}
*/
@Override
public int getLength() {
return length;
}
/**
* {@inheritDoc}
*/
@Override
public double getMinimumTravelTime() {
return getLength() * 3600.0 / (info.getMaximumSpeed() * 1000.0);
}
/**
* {@inheritDoc}
*/
@Override
public RoadInformation getRoadInformation() {
return info;
}
/**
* {@inheritDoc}
*/
@Override
public List<Point> getPoints() {
return Collections.unmodifiableList(points);
}

35
src/main/org/insa/graph/Graph.java
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@ -3,6 +3,13 @@ package org.insa.graph;
import java.util.Collections;
import java.util.List;
/**
* Main graph class.
*
* This class acts as a object-oriented adjacency list for a graph, i.e. it
* holds a list of nodes and each node holds a list of its successors.
*
*/
public class Graph {
// Map identifier.
@ -15,35 +22,39 @@ public class Graph {
private final List<Node> nodes;
// Graph information of this graph.
private final GraphInformation graphInfo;
private final GraphStatistics graphStatistics;
/**
* @param mapId ID of this graph.
* @param list List of nodes for this graph.
* Create a new graph with the given ID, name, nodes and information.
*
* @param mapId ID of the map corresponding to this graph.
* @param mapName Name of the map corresponding to this graph.
* @param nodes List of nodes for this graph.
* @param graphStatistics Information for this graph.
*/
public Graph(String mapId, String mapName, List<Node> list, GraphInformation graphInformation) {
public Graph(String mapId, String mapName, List<Node> nodes, GraphStatistics graphStatistics) {
this.mapId = mapId;
this.mapName = mapName;
this.nodes = list;
this.graphInfo = graphInformation;
this.nodes = nodes;
this.graphStatistics = graphStatistics;
}
/**
* @return GraphInformation of this graph.
* @return The GraphStatistics instance associated with this graph.
*/
public GraphInformation getGraphInformation() {
return this.graphInfo;
public GraphStatistics getGraphInformation() {
return this.graphStatistics;
}
/**
* @return Immutable list of nodes of this graph.
* @return Immutable view of the list of nodes of this graph.
*/
public List<Node> getNodes() {
return Collections.unmodifiableList(nodes);
}
/**
* @return Map ID of this graph.
* @return ID of the map associated with this graph.
*/
public String getMapId() {
return mapId;
@ -57,7 +68,7 @@ public class Graph {
}
/**
* @return Return the transpose graph of this graph.
* @return Transpose graph of this graph.
*/
public Graph transpose() {
// TODO:

39
src/main/org/insa/graph/GraphInformation.java
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@ -1,39 +0,0 @@
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;
}
}

46
src/main/org/insa/graph/GraphStatistics.java Normal file
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@ -0,0 +1,46 @@
package org.insa.graph;
/**
* Utility class that stores some statistics of graphs that are not easy to
* access.
*
* This class is used to provide O(1) access to information in graph that do not
* change, and that usually require O(n) to compute.
*
*/
public class GraphStatistics {
// Maximum speed on this graph (in kmph).
private final int maximumSpeed;
// Maximum length of any arc on this graph.
private final int maximumLength;
/**
* Create a new GraphStatistics instance with the given value.
*
* @param maximumSpeed Maximum speed of any road of the graph. A value of 0 may
* be used to indicate that this graph has no maximum limitation.
* @param maximumLength Maximum length of any arc of the graph.
*/
public GraphStatistics(int maximumSpeed, int maximumLength) {
this.maximumLength = maximumLength;
this.maximumSpeed = maximumSpeed;
}
/**
* @return Maximum speed of any arc in the graph, or 0 if some road have no
* speed limitations.
*/
public int getMaximumSpeed() {
return this.maximumSpeed;
}
/**
* @return Maximum length of any arc in the graph.
*/
public int getMaximumLength() {
return this.maximumLength;
}
}

57
src/main/org/insa/graph/Node.java
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@ -4,8 +4,43 @@ import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Class representing a Node in a {@link Graph}.
*
* This class holds information regarding nodes in the graph together with the
* successors associated to the nodes.
*
* Nodes are comparable based on their ID.
*
*/
public class Node implements Comparable<Node> {
/**
* Link the two given nodes with one or two arcs (depending on roadInformation),
* with the given attributes.
*
* If `roadInformation.isOneWay()` is true, only a forward arc is created
* (origin to destination) and added to origin. Otherwise, a corresponding
* backward arc is created and add to destination.
*
* @param origin Origin of the arc.
* @param destination Destination of the arc.
* @param length Length of the arc.
* @param roadInformation Information corresponding to the arc.
* @param points Points for the arc.
*
* @return The newly created forward arc (origin to destination).
*/
public static Arc linkNodes(Node origin, Node destination, int length,
RoadInformation roadInformation, ArrayList<Point> points) {
ArcForward arc = new ArcForward(origin, destination, length, roadInformation, points);
origin.addSuccessor(arc);
if (!roadInformation.isOneWay()) {
destination.addSuccessor(new ArcBackward(arc));
}
return arc;
}
// ID of the node.
private final int id;
@ -16,10 +51,11 @@ public class Node implements Comparable<Node> {
private final ArrayList<Arc> successors;
/**
* Create a new Node corresponding to the given Point with an empty list of
* successors.
* Create a new Node with the given ID corresponding to the given Point with an
* empty list of successors.
*
* @param point
* @param id ID of the node.
* @param point Position of the node.
*/
public Node(int id, Point point) {
this.id = id;
@ -44,24 +80,19 @@ public class Node implements Comparable<Node> {
}
/**
* @return List of successors of this node.
* @return Immutable view of the list of successors of this node.
*/
public List<Arc> getSuccessors() {
return Collections.unmodifiableList(successors);
}
/**
* @return Point of this node.
* @return Location of this node.
*/
public Point getPoint() {
return point;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object other) {
if (other instanceof Node) {
@ -70,8 +101,10 @@ public class Node implements Comparable<Node> {
return false;
}
/*
* (non-Javadoc)
/**
* Compare the ID of this node with the ID of the given node.
*
* @param other Node to compare this node with.
*
* @see java.lang.Comparable#compareTo(java.lang.Object)
*/

25
src/main/org/insa/graph/Point.java
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@ -1,20 +1,23 @@
package org.insa.graph;
/**
* Class representing a point on Earth.
* Class representing a point (position) on Earth.
*
*/
public final class Point {
// Earth radius, in meters;
private static final double EARTH_RADIUS = 6378137.0;
/**
* Approximated Earth radius (in meters).
*/
public static final double EARTH_RADIUS = 6378137.0;
/**
* Compute the distance in meters between the two given points.
*
* @param p1, p2
* @param p1 First point.
* @param p2 second point.
*
* @return Distance between the two given points, in meters.
* @return Distance between the two given points (in meters).
*/
public static double distance(Point p1, Point p2) {
double sinLat = Math.sin(Math.toRadians(p1.getLatitude()))
@ -29,9 +32,10 @@ public final class Point {
private final float longitude, latitude;
/**
* Create a new point corresponding to the given (longitude, latitude) position.
*
* @param longitude Longitude of the point, in degrees.
* @param latitude Latitude of the point, in degrees.
* @param longitude Longitude of the point (in degrees).
* @param latitude Latitude of the point (in degrees).
*/
public Point(float longitude, float latitude) {
this.longitude = longitude;
@ -55,7 +59,7 @@ public final class Point {
/**
* Compute the distance from this point to the given point
*
* @param target Target point.
* @param target Target point to compute distance to.
*
* @return Distance between this point and the target point, in meters.
*/
@ -63,11 +67,6 @@ public final class Point {
return distance(this, target);
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return String.format("Point(%f, %f)", getLongitude(), getLatitude());

23
src/main/org/insa/graph/RoadInformation.java
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@ -3,6 +3,9 @@ package org.insa.graph;
/**
* Class containing information for road that may be shared by multiple arcs.
*
* Sharing information between arcs reduces memory footprints of the program - A
* long road is often split into multiple arcs at each intersection.
*
*/
public class RoadInformation {
@ -45,6 +48,16 @@ public class RoadInformation {
// Name of the road.
private final String name;
/**
* Create a new RoadInformation instance containing the given parameters.
*
* @param roadType Type of the road (see {@link RoadType}).
* @param access Access restrictions for the road (see
* {@link AccessRestrictions}).
* @param isOneWay true if this road is a one way road, false otherwise.
* @param maxSpeed Maximum speed for the road (in kilometers-per-hour).
* @param name Name of the road.
*/
public RoadInformation(RoadType roadType, AccessRestrictions access, boolean isOneWay,
int maxSpeed, String name) {
this.type = roadType;
@ -55,7 +68,7 @@ public class RoadInformation {
}
/**
* @return true if this is a private road.
* @return Access restrictions for this road.
*/
public AccessRestrictions getAccessRestrictions() {
return this.access;
@ -69,14 +82,14 @@ public class RoadInformation {
}
/**
* @return true if this is a one-way road.
* @return true if the road is a one-way road.
*/
public boolean isOneWay() {
return oneway;
}
/**
* @return Maximum speed for this road (in kmph).
* @return Maximum speed for this road (in kilometers-per-hour).
*/
public int getMaximumSpeed() {
return maxSpeed;
@ -89,10 +102,6 @@ public class RoadInformation {
return name;
}
/*
* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
String typeAsString = "road";

22
src/main/org/insa/graph/io/BinaryGraphReaderInsa2018.java
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@ -8,10 +8,9 @@ import java.util.EnumMap;
import org.insa.graph.AccessRestrictions;
import org.insa.graph.AccessRestrictions.AccessMode;
import org.insa.graph.AccessRestrictions.AccessRestriction;
import org.insa.graph.ArcBackward;
import org.insa.graph.ArcForward;
import org.insa.graph.Arc;
import org.insa.graph.Graph;
import org.insa.graph.GraphInformation;
import org.insa.graph.GraphStatistics;
import org.insa.graph.Node;
import org.insa.graph.Point;
import org.insa.graph.RoadInformation;
@ -41,7 +40,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
// the order correspond to the 4 bits value (i.e. FORBIDDEN is 0 or PRIVATE is
// 2) - UKNOWN is not included because value above 6 (FORESTRY) are all
// considered unknown.
final AccessRestriction[] allRestrictions = new AccessRestriction[] {
final AccessRestriction[] allRestrictions = new AccessRestriction[]{
AccessRestriction.FORBIDDEN, AccessRestriction.ALLOWED, AccessRestriction.PRIVATE,
AccessRestriction.DESTINATION, AccessRestriction.DELIVERY,
AccessRestriction.CUSTOMERS, AccessRestriction.FORESTRY };
@ -49,7 +48,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
// The order of values inside this array is VERY IMPORTANT: The order is such
// that each 4-bits group of the long value is processed in the correct order,
// i.e. FOOT is processed first (4 lowest bits), and so on.
final AccessMode[] allModes = new AccessMode[] { AccessMode.FOOT, null, AccessMode.BICYCLE,
final AccessMode[] allModes = new AccessMode[]{ AccessMode.FOOT, null, AccessMode.BICYCLE,
AccessMode.SMALL_MOTORCYCLE, AccessMode.AGRICULTURAL, AccessMode.MOTORCYCLE,
AccessMode.MOTORCAR, AccessMode.HEAVY_GOODS, null, AccessMode.PUBLIC_TRANSPORT };
@ -240,16 +239,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
Node dest = nodes.get(destNode);
// Add successor to initial arc.
ArcForward arc = new ArcForward(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, null);
new ArcBackward(arc);
}
Arc arc = Node.linkNodes(orig, dest, length, info, points);
observers.forEach((observer) -> observer.notifyNewArcRead(arc));
}
}
@ -261,7 +251,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
this.dis.close();
return new Graph(mapId, mapName, nodes, new GraphInformation(maxSpeed, maxLength));
return new Graph(mapId, mapName, nodes, new GraphStatistics(maxSpeed, maxLength));
}
/**

16
src/main/org/insa/graphics/drawing/components/BasicDrawing.java
View file

@ -22,7 +22,6 @@ import java.util.List;
import javax.swing.JPanel;
import org.insa.graph.Arc;
import org.insa.graph.ArcForward;
import org.insa.graph.Graph;
import org.insa.graph.Node;
import org.insa.graph.Path;
@ -395,7 +394,6 @@ public class BasicDrawing extends JPanel implements Drawing {
/*
* (non-Javadoc)
*
* @see org.insa.graphics.drawing.Drawing#clear()
*/
@Override
@ -411,7 +409,6 @@ public class BasicDrawing extends JPanel implements Drawing {
/*
* (non-Javadoc)
*
* @see org.insa.graphics.drawing.Drawing#clearOverlays()
*/
@Override
@ -472,7 +469,6 @@ public class BasicDrawing extends JPanel implements Drawing {
/*
* (non-Javadoc)
*
* @see
* org.insa.graphics.drawing.Drawing#addDrawingClickListener(org.insa.graphics.
* drawing.DrawingClickListener)
@ -484,7 +480,6 @@ public class BasicDrawing extends JPanel implements Drawing {
/*
* (non-Javadoc)
*
* @see org.insa.graphics.drawing.Drawing#removeDrawingClickListener(org.insa.
* graphics.drawing.DrawingClickListener)
*/
@ -528,9 +523,9 @@ public class BasicDrawing extends JPanel implements Drawing {
*
* @param arc Arc to draw.
* @param palette Palette to use to retrieve color and width for arc, or null to
* use current settings.
* use current settings.
*/
protected void drawArc(ArcForward arc, GraphPalette palette, boolean repaint) {
protected void drawArc(Arc arc, GraphPalette palette, boolean repaint) {
List<Point> pts = arc.getPoints();
if (!pts.isEmpty()) {
if (palette != null) {
@ -645,8 +640,11 @@ public class BasicDrawing extends JPanel implements Drawing {
for (Node node: graph.getNodes()) {
for (Arc arc: node.getSuccessors()) {
if (arc instanceof ArcForward) { // draw only "true" arcs
drawArc((ArcForward) arc, palette, false);
// Draw arcs only if there are one-way arcs or if origin is lower than
// destination, avoid drawing two-ways arc twice.
if (arc.getRoadInformation().isOneWay()
|| arc.getOrigin().compareTo(arc.getDestination()) < 0) {
drawArc(arc, palette, false);
}
}
if (node.getId() % repaintModulo == 0) {