/// <summary>
/// Method that is called by the base class constructor. In this implicit euler scheme, it simply
/// adds the diagonal entries to the operator matrix.
/// Currently only working for fields that should be included in the time stepping.
/// </summary>
/// <param name="OperatorMatrix">The operator matrix that should be adjusted and passed onto the solver</param>
/// <param name="dt">time step size</param>
protected override void DefineMatrix(MsrMatrix OperatorMatrix, double dt)
{
int[] cells = m_Subgrid.SubgridIndex2LocalCellIndex;
IList <Field> fields = m_SubgridMapping.Fields;
int CoordinateOffset = 0;
for (int g = 0; g < temporalOp.Length; g++)
{
if (temporalOp[g])
{
Field gamma = fields[g];
for (int j = 0; j < cells.Length; j++)
{
int iglob = j * m_SubgridMapping.MaxTotalNoOfCoordinatesPerCell + CoordinateOffset + (int)OperatorMatrix.RowPartition.i0;
for (int n = 0; n < gamma.Basis.MaximalLength; n++)
{
double vadd = 1.0 / dt;
double v = OperatorMatrix.GetDiagElement(iglob);
v += vadd;
OperatorMatrix.SetDiagElement(iglob, v);
iglob++;
}
}
}
CoordinateOffset += fields[g].Basis.MaximalLength;
}
m_Solver.DefineMatrix(OperatorMatrix);
OperatorMatrix.SaveToTextFileSparse("Matrix.txt");
}