/*
* initialize the number of nodes, and the empty vector of neighbors
*/
public static void init(int s) {
size = s;
nodes = new Vector(size);
neighborHistory = new Vector(size);
neighborCurrent = new Vector(size);
for (int i = 0; i < size; i++) {
nodes.add(null);
neighborHistory.add(null);
neighborCurrent.add(null);
}
}
/*
* find the new appeared neighbors by comparing the current neighbor with the history
*/
public static Vector findNewNeighbor(int pos) {
Vector result = new Vector();
Vector cur = (Vector) neighborCurrent.get(pos);
Vector his = (Vector) neighborHistory.get(pos);
if (his == null || his.size() == 0) return cur;
for (int i = 0; i < cur.size(); i++) {
if (!his.contains(cur.get(i))) {
result.add(cur.get(i));
}
}
return result;
}
/*
* deep copy from current neighbors to history neighbors
*/
public static void currentToHistory() {
// neighborHistory = neighborCurrent;
for (int i = 0; i < size; i++) {
Vector currN = (Vector) neighborCurrent.get(i);
Vector histN = new Vector();
for (int j = 0; j < currN.size(); j++) {
int temp = (Integer) currN.get(j);
histN.add(temp);
}
neighborHistory.set(i, histN);
}
}
/*
* update neighborCurrent, based on the knowledge of the nodes
*/
public static void updateCurrentNeighbor() {
for (int i = 0; i < size; i++) {
// add the neighbors for the ith node
Vector nb = new Vector();
for (int j = 0; j < size; j++) {
if (i == j) continue;
Location li = ((RouteGPSR) nodes.get(i)).getCurrentLocation();
Location lj = ((RouteGPSR) nodes.get(j)).getCurrentLocation();
if (distance(li, lj) < JistExperiment.market_radius) {
nb.add(j);
}
}
neighborCurrent.set(i, nb);
}
}