public static bool VertexCountEqual <TVertex>(this IVertexSet <TVertex> left, IVertexSet <TVertex> right)
{
Contract.Requires(left != null);
Contract.Requires(right != null);
return(left.VertexCount == right.VertexCount);
}
/// <summary>
/// Gets the vertex identity.
/// </summary>
/// <remarks>
/// Returns more efficient methods for primitive types,
/// otherwise builds a dictionary
/// </remarks>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="graph">The graph.</param>
/// <returns></returns>
public static VertexIdentity <TVertex> GetVertexIdentity <TVertex>(
#if !NET20
this
#endif
IVertexSet <TVertex> graph)
{
Contract.Requires(graph != null);
// simpler identity for primitive types
var type = typeof(TVertex);
if (type == typeof(Boolean) || (type == typeof(Byte)) || (type == typeof(Char)) ||
(type == typeof(UInt16)) || (type == typeof(UInt32)) || (type == typeof(UInt64)) ||
(type == typeof(SByte)) || (type == typeof(Int16)) || (type == typeof(Int32)) ||
(type == typeof(Int64)) || (type == typeof(String)) || (type == typeof(Single)) ||
(type == typeof(Double)) || (type == typeof(DateTime)) || (type == (typeof(Decimal))))
{
return((v) => v.ToString());
}
// create dictionary
var ids = new Dictionary <TVertex, string>(graph.VertexCount);
return(v =>
{
string id;
if (!ids.TryGetValue(v, out id))
{
ids[v] = id = ids.Count.ToString();
}
return id;
});
}
public static void AssertVertexCountEqual <TVertex>(
this IVertexSet <TVertex> left,
IVertexSet <TVertex> right)
{
Assert.IsNotNull(left);
Assert.IsNotNull(right);
Assert.AreEqual(left.VertexCount, right.VertexCount);
}
public static bool InVertexSet <TVertex>(
this IVertexSet <TVertex> g,
TVertex v)
{
Contract.Requires(g != null);
Contract.Requires(v != null);
// todo make requires
return(g.ContainsVertex(v));
}
private static void CheckComponentCount<TVertex, TEdge>(
[NotNull] IVertexListGraph<TVertex, TEdge> graph,
[NotNull] IVertexSet<AdjacencyGraph<TVertex, TEdge>> condensedGraph)
where TEdge : IEdge<TVertex>
{
// Check number of vertices = number of strongly connected components
int components = graph.WeaklyConnectedComponents(new Dictionary<TVertex, int>());
Assert.AreEqual(components, condensedGraph.VertexCount, "Component count does not match.");
}
protected static void AddVertex_ImmutableGraph_WithUpdate(
IMutableVertexSet <int> wrappedGraph,
Func <IVertexSet <int> > createGraph)
{
IVertexSet <int> graph = createGraph();
wrappedGraph.AddVertex(1);
AssertHasVertices(graph, new[] { 1 }); // Graph is updated
}
protected static void AddVertex_ImmutableGraph_NoUpdate(
IMutableVertexSet <int> wrappedGraph,
Func <IVertexSet <int> > createGraph)
{
IVertexSet <int> graph = createGraph();
wrappedGraph.AddVertex(1);
AssertNoVertex(graph); // Graph is not updated
}
public static TVertex GetVertex <TVertex>(
[NotNull] IVertexSet <TVertex> graph,
[NotNull] Random rng)
{
if (graph is null)
{
throw new ArgumentNullException(nameof(graph));
}
return(GetVertex(graph.Vertices, graph.VertexCount, rng));
}
protected static void CheckComponentCount <TVertex, TEdge>(
IVertexListGraph <TVertex, TEdge> graph,
IVertexSet <AdjacencyGraph <TVertex, TEdge> > condensedGraph)
where TEdge : IEdge <TVertex>
{
// Check number of vertices = number of strongly connected components
var components = new Dictionary <TVertex, int>();
int componentCount = graph.StronglyConnectedComponents(components);
Assert.AreEqual(componentCount, condensedGraph.VertexCount, "Component count does not match.");
}
private static void VerifyVertexCount <TVertex, TEdge>(
[NotNull] IVertexSet <TVertex> graph,
// ReSharper disable once ParameterOnlyUsedForPreconditionCheck.Local
[NotNull] MultiSourceSinkGraphAugmentorAlgorithm <TVertex, TEdge> augmentor,
int vertexCount)
where TEdge : IEdge <TVertex>
{
Assert.AreEqual(vertexCount + 2 /* Source + Sink */, graph.VertexCount);
Assert.IsTrue(graph.ContainsVertex(augmentor.SuperSource));
Assert.IsTrue(graph.ContainsVertex(augmentor.SuperSink));
}
public static void AssertHasVertices <TVertex>(
IVertexSet <TVertex> graph,
IEnumerable <TVertex> vertices)
{
TVertex[] vertexArray = vertices.ToArray();
CollectionAssert.IsNotEmpty(vertexArray);
Assert.IsFalse(graph.IsVerticesEmpty);
Assert.AreEqual(vertexArray.Length, graph.VertexCount);
CollectionAssert.AreEquivalent(vertexArray, graph.Vertices);
}
public static void AssumeInVertexSet <TVertex>(
IVertexSet <TVertex> g,
TVertex v,
string parameterName)
{
AssumeNotNull(g, "g");
AssumeNotNull(v, parameterName);
if (!g.ContainsVertex(v))
{
throw new VertexNotFoundException(parameterName);
}
}
public static void AssumeNotInVertexSet <TVertex>(
IVertexSet <TVertex> g,
TVertex v,
string parameterName)
{
AssumeNotNull(g, "g");
AssumeNotNull(v, parameterName);
if (g.ContainsVertex(v))
{
throw new ArgumentException("vertex already in set", parameterName);
}
}
public static bool VertexCountEqual <TVertex>(
#if !NET20
this
#endif
IVertexSet <TVertex> left,
IVertexSet <TVertex> right)
{
//Contract.Requires(left != null);
//Contract.Requires(right != null);
return(left.VertexCount == right.VertexCount);
}
protected static void CheckVertexCount <TVertex, TEdge>(
IVertexSet <TVertex> graph,
IVertexSet <AdjacencyGraph <TVertex, TEdge> > condensedGraph)
where TEdge : IEdge <TVertex>
{
int count = 0;
foreach (AdjacencyGraph <TVertex, TEdge> vertices in condensedGraph.Vertices)
{
count += vertices.VertexCount;
}
Assert.AreEqual(graph.VertexCount, count, $"{nameof(graph.VertexCount)} does not match.");
}
private void Check(IVertexSet <IGeometry> graph, IDictionary <IEdge <IGeometry>, double> consts,
VertexPredecessorRecorderObserver <IGeometry, IEdge <IGeometry> > predecessorObserver)
{
foreach (IGeometry v in graph.Vertices)
{
double distance = 0;
IGeometry vertex = v;
IEdge <IGeometry> predecessor;
while (predecessorObserver.VertexPredecessors.TryGetValue(vertex, out predecessor))
{
distance += consts[predecessor];
vertex = predecessor.Source;
}
Console.WriteLine("A -> {0}: {1}", v, distance);
}
}
/// <summary>
/// Gets the vertex identity.
/// </summary>
/// <remarks>
/// Returns more efficient methods for primitive types,
/// otherwise builds a dictionary
/// </remarks>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="graph">The graph.</param>
/// <returns></returns>
public static VertexIdentity <TVertex> GetVertexIdentity <TVertex>(
#if !NET20
this
#endif
IVertexSet <TVertex> graph)
{
Contract.Requires(graph != null);
// simpler identity for primitive types
switch (Type.GetTypeCode(typeof(TVertex)))
{
case TypeCode.String:
case TypeCode.Boolean:
case TypeCode.Byte:
case TypeCode.Char:
case TypeCode.Decimal:
case TypeCode.Double:
case TypeCode.Int16:
case TypeCode.Int32:
case TypeCode.Int64:
case TypeCode.SByte:
case TypeCode.Single:
case TypeCode.UInt16:
case TypeCode.UInt32:
case TypeCode.UInt64:
return((v) => v.ToString());
}
// create dictionary
var ids = new Dictionary <TVertex, string>(graph.VertexCount);
return(v =>
{
string id;
if (!ids.TryGetValue(v, out id))
{
ids[v] = id = ids.Count.ToString();
}
return id;
});
}
/// <summary>
/// Gets the vertex identity.
/// </summary>
/// <remarks>
/// Returns more efficient methods for primitive types,
/// otherwise builds a dictionary
/// </remarks>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="graph">The graph.</param>
/// <returns></returns>
public static VertexIdentity <TVertex> GetVertexIdentity <TVertex>(
this IVertexSet <TVertex> graph)
{
Contract.Requires(graph != null);
// simpler identity for primitive types
if (typeof(TVertex) == typeof(string) ||
typeof(TVertex) == typeof(bool) ||
typeof(TVertex) == typeof(byte) ||
typeof(TVertex) == typeof(char) ||
typeof(TVertex) == typeof(decimal) ||
typeof(TVertex) == typeof(double) ||
typeof(TVertex) == typeof(short) ||
typeof(TVertex) == typeof(int) ||
typeof(TVertex) == typeof(long) ||
typeof(TVertex) == typeof(sbyte) ||
typeof(TVertex) == typeof(float) ||
typeof(TVertex) == typeof(ushort) ||
typeof(TVertex) == typeof(uint) ||
typeof(TVertex) == typeof(ulong))
{
return((v) => v.ToString());
}
// create dictionary
var ids = new Dictionary <TVertex, string>(graph.VertexCount);
return(v =>
{
string id;
if (!ids.TryGetValue(v, out id))
{
ids[v] = id = ids.Count.ToString();
}
return id;
});
}
private static Size EvaluateCanvasSize(
[NotNull] IVertexSet <object> compoundGraph,
[NotNull] ILayoutAlgorithm <object, IEdge <object>, CompoundGraph <object, IEdge <object> > > algorithm,
[NotNull] IReadOnlyDictionary <object, Size> verticesSizes)
{
var topLeft = new Point(double.PositiveInfinity, double.PositiveInfinity);
var bottomRight = new Point(double.NegativeInfinity, double.NegativeInfinity);
foreach (object v in compoundGraph.Vertices)
{
Point pos = algorithm.VerticesPositions[v];
Size size = verticesSizes[v];
topLeft.X = Math.Min(topLeft.X, pos.X - size.Width / 2.0);
topLeft.Y = Math.Min(topLeft.Y, pos.Y - size.Height / 2.0);
bottomRight.X = Math.Max(bottomRight.X, pos.X + size.Width / 2.0);
bottomRight.Y = Math.Max(bottomRight.Y, pos.Y + size.Height / 2.0);
}
Vector sizeVector = bottomRight - topLeft;
return(new Size(sizeVector.X, sizeVector.Y));
}
public static void AssertNoVertex <TVertex>(IVertexSet <TVertex> graph)
{
Assert.IsTrue(graph.IsVerticesEmpty);
Assert.AreEqual(0, graph.VertexCount);
CollectionAssert.IsEmpty(graph.Vertices);
}
private void Check(IVertexSet<IGeometry> graph, IDictionary<IEdge<IGeometry>, double> consts,
VertexPredecessorRecorderObserver<IGeometry, IEdge<IGeometry>> predecessorObserver)
{
foreach (IGeometry v in graph.Vertices)
{
double distance = 0;
IGeometry vertex = v;
IEdge<IGeometry> predecessor;
while (predecessorObserver.VertexPredecessors.TryGetValue(vertex, out predecessor))
{
distance += consts[predecessor];
vertex = predecessor.Source;
}
Console.WriteLine("A -> {0}: {1}", v, distance);
}
}
public static bool InVertexSet <TVertex>(
[NotNull] IVertexSet <TVertex> graph,
[NotNull] TVertex vertex)
{
return(graph.ContainsVertex(vertex));
}
public static bool InVertexSet <TVertex>(
IVertexSet <TVertex> graph,
TVertex vertex)
{
return(graph.ContainsVertex(vertex));
}