public static HyperGraph CreateTriominoGraph()
{
IEnumerable <string> vertices = GraphGenerator.GetAllTriominoVertices();
IEnumerable <HyperEdge> edges = GraphGenerator.GetAllTriominoEdges();
HyperGraph triomionGraph = new HyperGraph();
// Add all vertices
foreach (string vertexValue in vertices)
{
triomionGraph.AddVertex(vertexValue);
}
// Add all Edges
foreach (HyperEdge edge in edges)
{
if (edge.IsTwoSidedEdge())
{
triomionGraph.AddEdge(edge.Vertices[0].Value, edge.Vertices[1].Value);
}
else
{
triomionGraph.AddEdge(edge.Vertices[0].Value, edge.Vertices[1].Value, edge.Vertices[2].Value);
}
}
return(triomionGraph);
}
/// <summary>
/// Lädt einen HyperGraphen aus einer Datei.
/// </summary>
/// <param name="path">Der Pfad zu der Datei.</param>
/// <returns>Den geladenen Graphen.</returns>
public static HyperGraph LoadHyperGraphFromFile(string path)
{
// Die Daten aus der Datei laden.
IEnumerable <string> lines = File.ReadLines(path);
if (lines.Count() < 1)
{
throw new InvalidDataException("The given File is empty");
}
// Den Graphen erstellen.
HyperGraph hyperGraph = new HyperGraph();
// Die einzelnen Zeilen der Datei auslesen.
int lineNumber = 0;
IEnumerator <string> linesEnumerator = lines.GetEnumerator();
while (linesEnumerator.MoveNext())
{
string[] lineData = linesEnumerator.Current.Split(' ');
if (lineData.Count() < 2)
{
continue;
//throw new ArgumentException("One edge must connect at least two vertices (Line: " + lineNumber + ").");
}
// Die Knoten hinzufügen, falls noch nicht vorhanden.
foreach (string vertex in lineData)
{
if (!hyperGraph.HasVertex(vertex))
{
hyperGraph.AddVertex(vertex);
}
}
// Die Kante hinzufügen, falls noch nicht vorhanden
HyperEdge hyperEdge = (lineData.Length == 2) ? new HyperEdge(lineData[0], lineData[1]) : new HyperEdge(lineData[0], lineData[1], lineData[2]);
if (!hyperGraph.HasEdge(hyperEdge))
{
if (hyperEdge.IsThreeSidedEdge())
{
hyperGraph.AddEdge(hyperEdge.Vertices[0], hyperEdge.Vertices[1], hyperEdge.Vertices[2]);
}
else
{
hyperGraph.AddEdge(hyperEdge.Vertices[0], hyperEdge.Vertices[1]);
}
}
lineNumber++;
}
return(hyperGraph);
}
