/// <summary>
/// Computation of mass matrix, makes use of <see cref="MassMatrixFactory"/>
/// </summary>
public void ComputeMatrix <M, V>(M MassMatrix, V AffineOffset, double oodt = 1.0)
where M : IMutableMatrixEx
where V : IList <double>
{
if (!MassMatrix.RowPartitioning.EqualsPartition(this.CodomainMapping))
{
throw new ArgumentException("Mismatch between matrix columns and domain variable mapping.");
}
if (!MassMatrix.ColPartition.EqualsPartition(this.DomainMapping))
{
throw new ArgumentException("Mismatch between matrix columns and domain variable mapping.");
}
if (DomainMapping.NoOfVariables != CodomainMapping.NoOfVariables)
{
throw new NotSupportedException($"Mismatch between number of variables in domain ({DomainMapping.NoOfVariables}) and codomain ({CodomainMapping.NoOfVariables}).");
}
int QuadratureOrder = m_Owner.owner.GetOrderFromQuadOrderFunction(DomainMapping.BasisS, XSpatialOperatorMk2.GetBasisS(Parameters), CodomainMapping.BasisS);
LevelSetTracker _LsTrk;
if (m_Owner.m_lstrk != null)
{
_LsTrk = m_Owner.m_lstrk;
}
else
{
_LsTrk = XSpatialOperatorMk2.GetTracker(DomainMapping.BasisS, XSpatialOperatorMk2.GetBasisS(Parameters), CodomainMapping.BasisS);
}
SpeciesId[] _SpeciesToCompute = m_Owner.owner.Species.Select(spcName => _LsTrk.GetSpeciesId(spcName)).ToArray();
Dictionary <SpeciesId, IEnumerable <double> > MassScale = new Dictionary <SpeciesId, IEnumerable <double> >();
foreach (var spc in _SpeciesToCompute)
{
double[] diag = m_Owner.m_DiagonalScale[_LsTrk.GetSpeciesName(spc)].CloneAs();
diag.ScaleV(oodt);
MassScale.Add(spc, diag);
}
//double MaxTime = _LsTrk.RegionsHistory.AvailabelIndices.Max((int iHist) => _LsTrk.RegionsHistory[iHist].Time.Abs());
double[] AvailableTimes = _LsTrk.TimeLevelsInStack;
int ii = AvailableTimes.IndexOfMin((double t) => Math.Abs(t - this.time));
int BestTimeIdx = _LsTrk.RegionsHistory.AvailabelIndices[ii];
if (Math.Abs(Math.Abs(time - _LsTrk.RegionsHistory[BestTimeIdx].Time)) >= time * 1e-10 + 1e-10)
{
Console.WriteLine("unknown time level");
}
//BestTimeIdx = 1;
MassMatrixFactory MassFact = _LsTrk.GetXDGSpaceMetrics(_SpeciesToCompute, QuadratureOrder, HistoryIndex: BestTimeIdx).MassMatrixFactory;
MassFact.AccMassMatrix(MassMatrix, DomainMapping, MassScale);
}