public static SubGraph getABackup(GraphModel g) {
SubGraph ret = new SubGraph(g);
for (VertexModel v : g) {
ret.vertices.add(v);
}
for (EdgeModel e : g.edges()) {
ret.edges.add(e);
}
return ret;
}
public static GraphModel getACopy(GraphModel g) {
GraphModel ret = new GraphModel(g.isDirected());
VertexModel[] map = new VertexModel[g.getVerticesCount()];
for (VertexModel v : g) {
VertexModel t = new VertexModel(v);
map[v.getId()] = t;
ret.insertVertex(t);
}
for (EdgeModel e : g.edges()) {
EdgeModel t = new EdgeModel(e, map[e.source.getId()], map[e.target.getId()]);
ret.insertEdge(t);
setDup(e, t);
}
return ret;
}
static GraphModel createUndirectedCopy(GraphModel network) {
GraphModel U = new GraphModel(false);
for (VertexModel scan : network) {
VertexModel dup = new VertexModel(scan);
U.addVertex(dup);
scan.getProp().obj = dup;
dup.getProp().obj = scan;
}
for (EdgeModel scan : network.edges()) {
EdgeModel dup =
new EdgeModel(
scan,
(VertexModel) scan.source.getProp().obj,
(VertexModel) scan.target.getProp().obj);
U.addEdge(dup);
setDup(scan, dup);
}
return U;
}
@Override
public void doAlgorithm() {
step("TEST the step");
GraphModel g = graphData.getGraph();
Vertex v1 = requestVertex(g, "select the first vertex");
Vertex v2 = requestVertex(g, "select the second vertex");
step("color v1 and v2");
v1.setColor(2);
v2.setColor(2);
step("mark v1 neighbours");
for (Vertex v : g.neighbors(v1)) v.setMark(true);
step("color v1 edges");
for (Edge e : g.edges(v1)) e.setColor(3);
step("connect v2 to the neighbors of its neighbours");
Vector<Edge> toInsert = new Vector<Edge>();
for (Vertex v : g.neighbors(v2))
for (Vertex vv : g.neighbors(v)) toInsert.add(new Edge(v2, vv));
g.insertEdges(toInsert);
step("mark the path connecting v1 and v2, using helper methods in AlgorithmUtils");
Path<Vertex> path = AlgorithmUtils.getPath(g, v1, v2);
Vertex last = v2;
for (Vertex v : path) {
Edge e = g.getEdge(v, last);
if (e != null) e.setColor(6);
last = v;
}
step("the graph matrix<br>" + getMatrixHTML(g));
step("That's it!");
step("Start making your algorithm by modifing this file, and running make.sh");
step("have fun :)");
}