/**
* 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;
}
}
double progress(double val) {
double edgeLength = currentEdge.getLine().getLength();
double traffic = world.edgeTraffic.get(currentEdge).size();
double factor = 1000 * edgeLength / (traffic * 5);
factor = Math.min(1, factor);
return val * linkDirection * factor;
}