public void OrderSubdomainDofs(ISet <XSubdomain2D_old> enrichedSubdomains, ISet <XSubdomain2D_old> modifiedSubdomains,
ICrackDescription crack)
{
int numTotalDofs = NumStandardDofs;
foreach (var subdomain in enrichedSubdomains)
{
if (modifiedSubdomains.Contains(subdomain))
{
subdomain.DofOrderer = XSubdomainDofOrderer.CreateNodeMajor(crack, subdomain);
}
subdomain.DofOrderer.FirstGlobalDofIndex = numTotalDofs;
numTotalDofs += subdomain.DofOrderer.NumEnrichedDofs;
}
}
/// <summary>
/// </summary>
/// <param name="element"></param>
/// <param name="globalFreeVector">Both the free standard and enriched dofs.</param>
/// <returns></returns>
public Vector ExtractEnrichedDisplacementsOfElementFromGlobal(XCluster2D cluster, XContinuumElement2D element,
Vector globalFreeVector)
{
// While Heaviside dofs on boundary nodes that would cause singular stiffness matrices are generally avoided,
// the returned vector of this method must include them. Since H(x)-H(xNode)=0, it wouldn't be wrong to exclude
// them in theory. However it would cause indexing problems if they are missing, since other XFEM classes (such as
// XContinuumElement) have no concept of a node being enriched only for some elements.
DofTable <EnrichedDof> elementDofs = element.GetEnrichedDofs();
double[] elementVector = new double[elementDofs.EntryCount];
foreach (XNode node in element.Nodes)
{
bool isSingularityNode = SingularHeavisideEnrichments.TryGetValue(node,
out HashSet <IEnrichmentItem2D> singularEnrichments);
foreach (IEnrichmentItem2D enrichment in node.EnrichmentItems.Keys)
{
XSubdomainDofOrderer correctOrderer = this;
if (isSingularityNode && singularEnrichments.Contains(enrichment))
{
// Find global dof index from other subdomain, sine it is not stored here
correctOrderer = FindSubdomainWhereNodeEnrichmentIsNotSingular(cluster, node, enrichment).DofOrderer;
}
foreach (var dofType in enrichment.Dofs)
{
int elementDofIdx = elementDofs[node, dofType];
int globalDofIdx = correctOrderer.FirstGlobalDofIndex +
correctOrderer.subdomainEnrichedDofs[node, dofType];
elementVector[elementDofIdx] = globalFreeVector[globalDofIdx];
}
}
}
//foreach (Tuple<XNode2D, EnrichedDof, int> entry in elementDofs)
//{
// int globalEnrichedDof = globalEnrichedDofs[entry.Item1, entry.Item2];
// elementVector[entry.Item3] = globalFreeVector[globalEnrichedDof];
//}
return(Vector.CreateFromArray(elementVector));
}
