void addNode(Node node) {
setNodeReachable(node);
EdgeList list = node.incoming;
Edge e;
for (int i = 0; i < list.size(); i++) {
e = list.getEdge(i);
if (!isNodeReachable(e.source)) {
if (!isCandidate(e)) {
setCandidate(e);
candidates.add(e);
}
} else candidates.remove(e);
}
list = node.outgoing;
for (int i = 0; i < list.size(); i++) {
e = list.getEdge(i);
if (!isNodeReachable(e.target)) {
if (!isCandidate(e)) {
setCandidate(e);
candidates.add(e);
}
} else candidates.remove(e);
}
members.add(node);
}
protected void solve() {
Node root = graph.nodes.getNode(0);
setParentEdge(root, null);
addNode(root);
while (members.size() < graph.nodes.size()) {
if (candidates.size() == 0)
throw new RuntimeException("graph is not fully connected"); // $NON-NLS-1$
int minSlack = Integer.MAX_VALUE, slack;
Edge minEdge = null, edge;
for (int i = 0; i < candidates.size() && minSlack > 0; i++) {
edge = candidates.getEdge(i);
slack = edge.getSlack();
if (slack < minSlack) {
minSlack = slack;
minEdge = edge;
}
}
addEdge(minEdge);
}
graph.nodes.normalizeRanks();
}