/**
* Sets the Agent up to proceed along an Edge
*
* @param edge the GeomPlanarGraphEdge to traverse next
*/
void setupEdge(GeomPlanarGraphEdge edge) {
// clean up on old edge
if (currentEdge != null) {
ArrayList<AgentCopy> traffic = world.edgeTraffic.get(currentEdge);
traffic.remove(this);
}
currentEdge = edge;
// update new edge traffic
if (world.edgeTraffic.get(currentEdge) == null) {
world.edgeTraffic.put(currentEdge, new ArrayList<AgentCopy>());
}
world.edgeTraffic.get(currentEdge).add(this);
// set up the new segment and index info
LineString line = edge.getLine();
segment = new LengthIndexedLine(line);
startIndex = segment.getStartIndex();
endIndex = segment.getEndIndex();
linkDirection = 1;
// check to ensure that Agent is moving in the right direction
double distanceToStart = line.getStartPoint().distance(location.geometry),
distanceToEnd = line.getEndPoint().distance(location.geometry);
if (distanceToStart <= distanceToEnd) { // closer to start
currentIndex = startIndex;
linkDirection = 1;
} else if (distanceToEnd < distanceToStart) { // closer to end
currentIndex = endIndex;
linkDirection = -1;
}
}
private static List<SimpleFeature> processEdges(
List<String> unvisited,
Node startNode,
GeometryFactory geometryFactory,
SimpleFeatureType featureType,
long startTime,
int pathID,
List<SimpleFeature> featuresList,
double stepTime,
int maxTime,
int intersectionWait,
int stepDistance) {
LineString line;
Node currentNode = startNode;
int crossings = 0;
int walkDistance = 0;
long walkTime = startTime;
while ((unvisited.size() > 0) && (walkTime <= maxTime)) {
if (currentNode.getEdges().size() > 0) {
int crossingWait = 0;
if (currentNode.getEdges().size() > 2) {
// This is an intersection - therefore delay for crossing
crossingWait = intersectionWait;
crossings++;
}
for (Edge edge : (List<Edge>) currentNode.getEdges()) {
if (unvisited.contains(String.valueOf(edge.getID()))) {
line = (LineString) edge.getObject();
Coordinate pt = ((Point) currentNode.getObject()).getCoordinate();
LengthIndexedLine lil = new LengthIndexedLine(line);
if (lil.project(pt) == lil.getStartIndex()) {
// start coordinate is at start of line
for (int index = 0; index < lil.getEndIndex(); index += stepDistance) {
Coordinate coordinate = lil.extractPoint(index);
Point point = geometryFactory.createPoint(coordinate);
SimpleFeature feature =
buildTimeFeatureFromGeometry(
featureType,
point,
walkTime,
crossings,
walkDistance,
String.valueOf(pathID));
walkDistance += stepDistance;
walkTime += stepTime + crossingWait;
crossingWait = 0; // only perform wait once
featuresList.add(feature);
}
} else if (lil.project(pt) == lil.getEndIndex()) {
// start coordinate is at the end of the line
for (int index = (int) lil.getEndIndex(); index >= 0; index -= stepDistance) {
Coordinate coordinate = lil.extractPoint(index);
Point point = geometryFactory.createPoint(coordinate);
SimpleFeature feature =
buildTimeFeatureFromGeometry(
featureType,
point,
walkTime,
crossings,
walkDistance,
String.valueOf(pathID));
walkDistance += stepDistance;
walkTime += stepTime + crossingWait;
crossingWait = 0; // only perform wait once
featuresList.add(feature);
}
} else {
LOGGER.error("Start coordinate did not match with Index!");
}
unvisited.remove(String.valueOf(edge.getID()));
Node nextNode = edge.getOtherNode(currentNode);
if (nextNode != null) {
currentNode = nextNode;
} else {
break;
}
}
}
}
}
return featuresList;
}