[31] | 1 | /************************************************************************************ |
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| 2 | * Copyright (C) 2008 by Politehnica University of Bucharest and Rutgers University |
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| 3 | * All rights reserved. |
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| 4 | * Refer to LICENSE for terms and conditions of use. |
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| 5 | ***********************************************************************************/ |
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| 6 | package vnsim.vehicular.simulator.intersections; |
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| 7 | |
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| 8 | import java.util.ArrayList; |
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| 9 | import java.util.Collections; |
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| 10 | import java.util.LinkedList; |
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| 11 | import java.util.ListIterator; |
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| 12 | |
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| 13 | import vnsim.applications.adaptiveTL.*; |
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| 14 | import vnsim.applications.trafficview.SimulatedCarInfo; |
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| 15 | import vnsim.map.object.*; |
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| 16 | import vnsim.vehicular.simulator.RouteSegment; |
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| 17 | |
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| 18 | public class DirectedRoadSegment implements java.io.Serializable { |
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| 19 | |
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| 20 | // represents a road segment of road "roadIndex", starting |
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| 21 | // from point "pointIndex" going either towards point "0" (if |
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| 22 | // "direction"=false) or towards the last point on the road |
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| 23 | // (if "direction"=true); |
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| 24 | private static final long serialVersionUID = -5883719321862303634L; |
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| 25 | |
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| 26 | public int roadIndex; |
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| 27 | public int pointIndex; |
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| 28 | public boolean direction; |
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| 29 | public int segmentIndex; |
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| 30 | public Intersection intersection = null; |
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| 31 | |
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| 32 | public double angle; // degrees ( 0 - 360) |
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| 33 | |
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| 34 | public SortedIntersectionRecordList cars = null; |
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| 35 | |
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| 36 | public ArrayList<IntersectionPath> paths = new ArrayList<IntersectionPath>(); |
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| 37 | public IntersectionCarRecord[] endOfQueue = null; |
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| 38 | public double[] queueDischargeRate; |
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| 39 | |
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| 40 | public double leftProc; |
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| 41 | public double pedestrianCrossingTime = 0; // seconds |
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| 42 | public double noOfStops = 0; |
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| 43 | public int totalLaneNo; |
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| 44 | public Road road; |
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| 45 | |
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| 46 | public int demand = 0; |
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| 47 | public int totalVolume = 0; |
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| 48 | public int carryOver = 0; |
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| 49 | |
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| 50 | TrafficLightInfo lightInfo = null; |
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| 51 | TrafficLightInfo newLightInfo = null; |
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| 52 | |
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| 53 | public WirelessTrafficLight nextwtl = null; |
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| 54 | public int nextwtlPointIndex = -1; |
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| 55 | |
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| 56 | public DirectedRoadSegment left = null, right = null, front = null, pair = null; |
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| 57 | |
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| 58 | // queue sizes measured for a speciffic analysis period |
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| 59 | public LinkedList<Double> queueSizes = new LinkedList<Double>(); |
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| 60 | public int crossedLeft = 0; |
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| 61 | |
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| 62 | |
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| 63 | public DirectedRoadSegment(int roadIndex, int pointIndex, boolean direction) |
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| 64 | { |
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| 65 | this.roadIndex=roadIndex; |
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| 66 | this.pointIndex=pointIndex; |
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| 67 | this.direction=direction; |
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| 68 | // set the angle |
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| 69 | |
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| 70 | Road r1 = Globals.map.roads.get(roadIndex); |
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| 71 | this.road = r1; |
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| 72 | Point p1 = r1.points.get(pointIndex); |
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| 73 | Point p2; |
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| 74 | if (direction) { |
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| 75 | p2 = Globals.map.roads.get(roadIndex).points.get(pointIndex + 1); |
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| 76 | } else { |
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| 77 | p2 = Globals.map.roads.get(roadIndex).points.get(pointIndex - 1); |
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| 78 | } |
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| 79 | |
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| 80 | double dy = p2.getLatitude() - p1.getLatitude(); |
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| 81 | double dx = p2.getLongitude() - p1.getLongitude(); |
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| 82 | |
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| 83 | if (dx == 0) { |
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| 84 | if (dy > 0) |
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| 85 | angle = 90.0; |
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| 86 | else |
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| 87 | angle = 270.0; |
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| 88 | return; |
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| 89 | } |
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| 90 | double rads = Math.atan(dy / dx); |
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| 91 | if (rads > 0) { |
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| 92 | if (dx > 0) { |
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| 93 | // dx and dy both positive |
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| 94 | angle = Math.toDegrees(rads); |
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| 95 | } else { |
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| 96 | // both negative |
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| 97 | angle = Math.toDegrees(rads + Math.PI); |
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| 98 | } |
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| 99 | } else { |
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| 100 | if (dx < 0) { |
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| 101 | // dx negative, dy positive |
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| 102 | angle = Math.toDegrees(Math.PI + rads); |
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| 103 | } else { |
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| 104 | // dy negative, dx positive |
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| 105 | angle = Math.toDegrees(2 * Math.PI + rads); |
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| 106 | } |
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| 107 | } |
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| 108 | |
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| 109 | // compute crossing time and maximum intergreen time |
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| 110 | Road r = Globals.map.roads.get(roadIndex); |
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| 111 | if (r.oneWay == 0) { |
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| 112 | totalLaneNo = 2 * r.laneNo; |
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| 113 | } else { |
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| 114 | totalLaneNo = r.laneNo; |
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| 115 | } |
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| 116 | pedestrianCrossingTime = Math.ceil((double) (totalLaneNo * Globals.LANE_WIDTH) / Globals.PEDESTRIAN_SPEED); |
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| 117 | } |
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| 118 | |
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| 119 | public boolean equals(Object o) { |
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| 120 | try { |
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| 121 | DirectedRoadSegment drs = (DirectedRoadSegment) o; |
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| 122 | if (drs.roadIndex == roadIndex && drs.pointIndex == pointIndex && drs.direction == direction) |
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| 123 | return true; |
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| 124 | return false; |
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| 125 | } catch (Exception ex) { |
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| 126 | return false; |
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| 127 | } |
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| 128 | } |
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| 129 | |
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| 130 | public boolean isSameSegment(RouteSegment s1) { |
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| 131 | // should be on the same road |
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| 132 | if (s1.roadIndex != this.roadIndex) |
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| 133 | return false; |
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| 134 | // should have a point in common |
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| 135 | if (s1.pt1 == this.pointIndex) { |
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| 136 | if (s1.pt2 < s1.pt1 && this.direction == false) |
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| 137 | return true; |
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| 138 | if (s1.pt2 > s1.pt1 && this.direction == true) |
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| 139 | return true; |
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| 140 | } |
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| 141 | if (s1.pt2 == this.pointIndex) { |
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| 142 | if (s1.pt1 < s1.pt2 && this.direction == false) |
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| 143 | return true; |
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| 144 | if (s1.pt1 > s1.pt2 && this.direction == true) |
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| 145 | return true; |
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| 146 | } |
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| 147 | return false; |
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| 148 | } |
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| 149 | |
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| 150 | public boolean isExitOnly() { |
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| 151 | Road r = Globals.map.roads.get(roadIndex); |
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| 152 | if (r.oneWay == 0) |
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| 153 | return false; |
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| 154 | if (r.oneWay == 1) { |
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| 155 | if (direction) |
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| 156 | return true; |
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| 157 | else |
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| 158 | return false; |
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| 159 | } |
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| 160 | if (r.oneWay == 2) { |
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| 161 | if (direction) |
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| 162 | return false; |
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| 163 | else |
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| 164 | return true; |
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| 165 | } |
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| 166 | System.out.println("ERROR! isExitOnly found an unexpected value for oneWay!"); |
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| 167 | return false; |
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| 168 | } |
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| 169 | |
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| 170 | public boolean isEntryOnly() { |
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| 171 | Road r = Globals.map.roads.get(roadIndex); |
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| 172 | if (r.oneWay == 0) |
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| 173 | return false; |
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| 174 | if (r.oneWay == 1) { |
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| 175 | if (direction) |
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| 176 | return false; |
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| 177 | else |
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| 178 | return true; |
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| 179 | } |
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| 180 | if (r.oneWay == 2) { |
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| 181 | if (direction) |
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| 182 | return true; |
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| 183 | else |
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| 184 | return false; |
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| 185 | } |
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| 186 | System.out.println("ERROR! isEntryOnly found an unexpected value for oneWay!"); |
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| 187 | return false; |
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| 188 | } |
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| 189 | |
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| 190 | public boolean carEntersIntersection(IntersectionCarRecord icr) { |
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| 191 | SimulatedCarInfo sc = icr.getCar(); |
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| 192 | if (roadIndex == sc.getRoadIdx() && sc.getPointIdx() == pointIndex && (sc.getDirection() == 1) == !direction) |
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| 193 | return true; |
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| 194 | return false; |
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| 195 | } |
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| 196 | |
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| 197 | public boolean carExitsIntersection(IntersectionCarRecord icr) { |
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| 198 | SimulatedCarInfo sc = icr.getCar(); |
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| 199 | if (roadIndex == sc.getRoadIdx() && sc.getPointIdx() == pointIndex && (sc.getDirection() == 1) == direction) |
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| 200 | return true; |
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| 201 | return false; |
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| 202 | } |
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| 203 | |
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| 204 | public boolean containsCar(IntersectionCarRecord icr) { |
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| 205 | SimulatedCarInfo sc = icr.getCar(); |
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| 206 | if (roadIndex == sc.getRoadIdx() |
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| 207 | && ((sc.getPointIdx() > pointIndex && direction == true) || (sc.getPointIdx() < pointIndex && direction == false))) { |
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| 208 | // || (sc.getPointIdx() == pointIndex) && (sc.getDirection() == 1) |
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| 209 | // == direction)) |
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| 210 | if (nextwtl != null) { |
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| 211 | if (direction == true && sc.getPointIdx() >= nextwtlPointIndex) |
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| 212 | return false; |
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| 213 | if (direction == false && sc.getPointIdx() <= nextwtlPointIndex) |
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| 214 | return false; |
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| 215 | } |
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| 216 | return true; |
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| 217 | } |
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| 218 | return false; |
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| 219 | } |
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| 220 | |
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| 221 | public boolean isCarApproaching(IntersectionCarRecord icr) { |
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| 222 | SimulatedCarInfo sc = icr.getCar(); |
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| 223 | if (this.roadIndex == sc.getRoadIdx()) { |
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| 224 | if (sc.getPointIdx() >= this.pointIndex && this.direction == true) { |
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| 225 | if (sc.getDirection() == 1) { |
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| 226 | return false; |
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| 227 | } else { |
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| 228 | return true; |
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| 229 | } |
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| 230 | } |
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| 231 | if (sc.getPointIdx() <= this.pointIndex && this.direction == false) { |
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| 232 | if (sc.getDirection() == 1) { |
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| 233 | return true; |
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| 234 | } else { |
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| 235 | return false; |
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| 236 | } |
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| 237 | } |
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| 238 | } |
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| 239 | return false; |
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| 240 | } |
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| 241 | |
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| 242 | public void computeEndOfQueue(IntersectionCarRecord icr) { |
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| 243 | SimulatedCarInfo car = icr.getCar(); |
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| 244 | endOfQueue[car.getLane()] = null; |
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| 245 | ListIterator<IntersectionCarRecord> it = cars.listIterator(); |
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| 246 | Point px = Globals.map.roads.get(roadIndex).points.get(pointIndex); |
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| 247 | IntersectionCarRecord end = new IntersectionCarRecord(null); |
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| 248 | while (it.hasNext()) { |
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| 249 | IntersectionCarRecord crt = it.next(); |
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| 250 | SimulatedCarInfo crtcar = crt.getCar(); |
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| 251 | if (cars.getComparator().compare(crt, icr) > 0 && crtcar.getPointIdx() != car.getPointIdx()) |
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| 252 | break; |
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| 253 | if (crtcar.getLane() != car.getLane()) |
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| 254 | continue; |
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| 255 | |
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| 256 | Point p = Globals.map.roads.get(roadIndex).points.get(crtcar.getPointIdx()); |
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| 257 | double dist = p.getDistance() - px.getDistance(); |
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| 258 | if (dist < 0) |
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| 259 | dist = -dist; |
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| 260 | if (dist < WirelessTrafficLight.MAX_QUEUE_GAP) { |
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| 261 | end = crt; |
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| 262 | } |
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| 263 | px = p; |
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| 264 | } |
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| 265 | endOfQueue[car.getLane()] = end; |
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| 266 | } |
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| 267 | |
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| 268 | public boolean isCarQueuing(IntersectionCarRecord icr) { |
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| 269 | SimulatedCarInfo car = icr.getCar(); |
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| 270 | if (car.getSpeed() < WirelessTrafficLight.LOW_SPEED) { |
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| 271 | int lane = car.getLane(); |
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| 272 | Point p = Globals.map.roads.get(roadIndex).points.get(car.getPointIdx()); |
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| 273 | Point px = null; |
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| 274 | if (endOfQueue[lane].getCar() == null) { |
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| 275 | // intersection point |
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| 276 | px = Globals.map.roads.get(roadIndex).points.get(pointIndex); |
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| 277 | |
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| 278 | } else { |
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| 279 | if (cars.getComparator().compare(endOfQueue[lane], icr) > 0) |
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| 280 | return true; |
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| 281 | |
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| 282 | if (endOfQueue[lane].equals(icr)) { |
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| 283 | // endOfQueue[lane] = icr; |
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| 284 | // return true; |
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| 285 | int idx = Collections.binarySearch(cars, icr, cars.getComparator()); |
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| 286 | ListIterator<IntersectionCarRecord> it = cars.listIterator(idx); |
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| 287 | boolean first = true; |
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| 288 | while (it.hasPrevious()) { |
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| 289 | SimulatedCarInfo carInFront = it.previous().getCar(); |
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| 290 | if (carInFront.getLane() != car.getLane()) |
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| 291 | continue; |
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| 292 | |
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| 293 | first = false; |
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| 294 | int pi = endOfQueue[lane].getCar().getPointIdx(); |
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| 295 | px = Globals.map.roads.get(roadIndex).points.get(pi); |
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| 296 | double dist = p.getDistance() - px.getDistance(); |
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| 297 | if (dist < 0) |
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| 298 | dist = -dist; |
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| 299 | if (dist < WirelessTrafficLight.MAX_QUEUE_GAP * 2) { |
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| 300 | endOfQueue[lane] = icr; |
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| 301 | return true; |
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| 302 | } else { |
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| 303 | computeEndOfQueue(endOfQueue[lane]); |
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| 304 | return false; |
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| 305 | } |
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| 306 | } |
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| 307 | if (first) { |
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| 308 | endOfQueue[lane] = new IntersectionCarRecord(null); |
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| 309 | return isCarQueuing(icr); |
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| 310 | } |
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| 311 | } else { |
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| 312 | int pi = endOfQueue[lane].getCar().getPointIdx(); |
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| 313 | px = Globals.map.roads.get(roadIndex).points.get(pi); |
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| 314 | } |
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| 315 | } |
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| 316 | |
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| 317 | double dist = p.getDistance() - px.getDistance(); |
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| 318 | if (dist < 0) |
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| 319 | dist = -dist; |
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| 320 | if (dist < WirelessTrafficLight.MAX_QUEUE_GAP) { |
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| 321 | endOfQueue[lane] = icr; |
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| 322 | return true; |
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| 323 | } |
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| 324 | } |
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| 325 | return false; |
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| 326 | } |
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| 327 | |
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| 328 | // the number of seconds to extend the green phase, for protected left |
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| 329 | public int leftSignalExtension() { |
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| 330 | int leftLane = road.laneNo; |
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| 331 | if (endOfQueue[leftLane].getCar() == null || this.front == null) { |
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| 332 | return 0; |
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| 333 | } |
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| 334 | |
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| 335 | ListIterator<IntersectionCarRecord> it = cars.listIterator(); |
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| 336 | int leftRq = 0; |
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| 337 | while (it.hasNext()) { |
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| 338 | IntersectionCarRecord crt = it.next(); |
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| 339 | SimulatedCarInfo crtcar = crt.getCar(); |
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| 340 | if (crtcar.getLane() != leftLane) { |
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| 341 | continue; |
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| 342 | } |
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| 343 | if (cars.getComparator().compare(crt, endOfQueue[leftLane]) > 0) |
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| 344 | break; |
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| 345 | if (crtcar.getSignal() == (byte) 1) { |
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| 346 | leftRq++; |
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| 347 | } |
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| 348 | } |
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| 349 | if (leftRq == 0) |
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| 350 | return 0; |
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| 351 | int i = paths.indexOf(new IntersectionPath(this, this.front)); |
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| 352 | double stops = paths.get(i).computeAvgNoOfStops(Globals.ANALYSIS_PERIOD); |
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| 353 | if (stops == 0) |
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| 354 | stops = 0.5; |
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| 355 | if (crossedLeft != 0 && (double) (crossedLeft + leftRq) / crossedLeft < 2 * stops) |
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| 356 | return 0; |
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| 357 | int shouldPass = (int) (2 * stops * (leftRq + crossedLeft)) - crossedLeft; |
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| 358 | |
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| 359 | if (shouldPass == 0) |
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| 360 | return 0; |
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| 361 | |
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| 362 | leftRq = 0; |
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| 363 | int k = 0; |
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| 364 | it = cars.listIterator(); |
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| 365 | while (it.hasNext()) { |
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| 366 | IntersectionCarRecord crt = it.next(); |
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| 367 | SimulatedCarInfo crtcar = crt.getCar(); |
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| 368 | if (crtcar.getLane() != leftLane) { |
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| 369 | continue; |
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| 370 | } |
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| 371 | if (cars.getComparator().compare(crt, endOfQueue[leftLane]) > 0) |
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| 372 | break; |
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| 373 | k++; |
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| 374 | if (crtcar.getSignal() == (byte) 1) { |
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| 375 | leftRq++; |
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| 376 | } |
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| 377 | if (leftRq == shouldPass) { |
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| 378 | break; |
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| 379 | } |
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| 380 | } |
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| 381 | // 0.5 veh/s |
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| 382 | return k * 2; |
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| 383 | } |
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| 384 | |
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| 385 | public int computeDemand(int period) { |
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| 386 | if (paths.size() == 0) |
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| 387 | return 0; |
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| 388 | IntersectionPath ip = paths.get(0); |
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| 389 | |
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| 390 | demand = ip.computeDemand(period); |
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| 391 | |
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| 392 | int left = ip.computeLeftDemand(period); |
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| 393 | leftProc = (double) left * 100.0 / demand; |
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| 394 | // if (Globals.engine.crtTime < period ) |
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| 395 | // demand = (int)((double) (Globals.HOUR * demand) / |
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| 396 | // Globals.engine.crtTime ); |
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| 397 | // else |
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| 398 | // demand = (int)((double) (Globals.HOUR * demand) / period); |
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| 399 | demand = (int) ((double) (Globals.HOUR * demand) / ip.analysisPeriod); |
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| 400 | |
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| 401 | return demand; |
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| 402 | } |
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| 403 | |
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| 404 | public int computeVolume(int period) { |
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| 405 | totalVolume = 0; |
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| 406 | noOfStops = 0; |
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| 407 | int analysisPeriod = 0; |
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| 408 | |
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| 409 | for (int i = 0; i < paths.size(); i++) { |
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| 410 | IntersectionPath ip = paths.get(i); |
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| 411 | int vol = ip.computeVolume(period); |
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| 412 | analysisPeriod += ip.analysisPeriod; |
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| 413 | totalVolume += vol; |
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| 414 | double stops = ip.computeAvgNoOfStops(period); |
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| 415 | noOfStops += (double) vol * stops; |
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| 416 | } |
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| 417 | try { |
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| 418 | analysisPeriod /= paths.size(); |
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| 419 | noOfStops /= totalVolume; |
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| 420 | totalVolume = (int) ((double) (Globals.HOUR * totalVolume) / analysisPeriod); |
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| 421 | } catch (Exception e) { |
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| 422 | totalVolume = 0; |
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| 423 | noOfStops = 0; |
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| 424 | } |
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| 425 | return totalVolume; |
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| 426 | } |
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| 427 | |
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| 428 | // public double computeLastCycleQueueSize(){ |
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| 429 | // if (paths.size() == 0) |
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| 430 | // return 0; |
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| 431 | // IntersectionPath ip = paths.get(0); |
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| 432 | // return ip.computeLastCycleQueueSize(); |
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| 433 | // } |
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| 434 | |
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| 435 | public void changePhase(DirectedRoadSegment connection, int crtTime, int color) { |
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| 436 | if (color == Globals.GREEN) { |
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| 437 | crossedLeft = 0; |
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| 438 | } |
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| 439 | if (connection == null) { |
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| 440 | // one single color for all directions |
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| 441 | int n = 0; |
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| 442 | for (int i = 0; i < paths.size(); i++) { |
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| 443 | IntersectionPath ip = paths.get(i); |
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| 444 | |
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| 445 | n += ip.lastHourHistory.getLast().getCarsNo(); |
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| 446 | |
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| 447 | ip.changePhase(crtTime, color); |
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| 448 | } |
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| 449 | |
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| 450 | } else { |
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| 451 | int i = paths.indexOf(connection); |
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| 452 | assert (i != -1); |
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| 453 | IntersectionPath ip = paths.get(i); |
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| 454 | ip.changePhase(crtTime, color); |
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| 455 | } |
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| 456 | } |
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| 457 | |
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| 458 | public void recordCar(IntersectionCarRecord icr, DirectedRoadSegment newseg) { |
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| 459 | int i = paths.indexOf(new IntersectionPath(this, newseg)); |
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| 460 | if (this.left != null && this.left.equals(newseg)) { |
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| 461 | crossedLeft++; |
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| 462 | } |
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| 463 | if (i == -1) |
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| 464 | return; |
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| 465 | IntersectionPath ip = paths.get(i); |
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| 466 | ip.recordCar(icr); |
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| 467 | } |
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| 468 | |
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| 469 | public void recordQueueSize() { |
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| 470 | double avg = 0; |
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| 471 | Point px = road.points.get(pointIndex); |
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| 472 | for (int i = 1; i < endOfQueue.length; i++) { |
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| 473 | if (endOfQueue[i].getCar() != null) { |
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| 474 | Point p = road.points.get(endOfQueue[i].getCar().getPointIdx()); |
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| 475 | avg += Math.abs(p.getDistance() - px.getDistance()); |
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| 476 | } |
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| 477 | } |
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| 478 | try { |
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| 479 | avg /= endOfQueue.length - 1; |
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| 480 | } catch (Exception e) { |
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| 481 | avg = 0; |
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| 482 | } |
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| 483 | |
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| 484 | queueSizes.add(new Double(avg)); |
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| 485 | while (queueSizes.size() > Globals.ANALYSIS_PERIOD / (10 * Globals.SECOND)) { |
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| 486 | queueSizes.removeFirst(); |
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| 487 | } |
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| 488 | |
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| 489 | } |
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| 490 | |
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| 491 | public double get95thQueueSize() { |
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| 492 | if (queueSizes.size() == 0) { |
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| 493 | return 0; |
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| 494 | } |
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| 495 | ArrayList<Double> array = new ArrayList<Double>(); |
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| 496 | array.addAll(queueSizes); |
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| 497 | Collections.sort(array); |
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| 498 | int idx = (int) (array.size() * 0.95); |
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| 499 | return array.get(idx).doubleValue(); |
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| 500 | } |
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| 501 | |
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| 502 | public String toString() { |
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| 503 | return "(Rd=" + roadIndex + ";Pt=" + pointIndex + ";Dir=" + direction + " + ANGLE=" + angle + ") "; |
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| 504 | } |
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| 505 | |
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| 506 | public TrafficLightInfo getLightInfo() { |
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| 507 | return lightInfo; |
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| 508 | } |
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| 509 | |
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| 510 | public void setLightInfo(TrafficLightInfo lightInfo) { |
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| 511 | this.lightInfo = lightInfo; |
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| 512 | } |
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| 513 | |
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| 514 | public TrafficLightInfo getNewLightInfo() { |
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| 515 | return newLightInfo; |
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| 516 | } |
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| 517 | |
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| 518 | public void setNewLightInfo(TrafficLightInfo newLightInfo) { |
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| 519 | this.newLightInfo = newLightInfo; |
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| 520 | } |
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| 521 | } |
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