/// <summary>
/// Based on the Ideas by
/// C. Basting and D. Kuzmin,
/// “A minimization-based finite element formulation for interface-preserving level set reinitialization”,
/// Computing, vol. 95, no. 1, pp. 13–25, Dec. 2012.
/// </summary>
/// <param name="LSTrck"></param>
/// <param name="bcmap">Boundary Conditions for the LevelSet Equations</param>
/// <param name="Control">various parameters <paramref name="EllipticReinitControl"/></param>
public Extender(SinglePhaseField Extension, LevelSetTracker LSTrck, ILevelSetComponent InterfaceFlux, List <DGField> InterfaceParams, VectorField <SinglePhaseField> LevelSetGradient, EllipticExtVelAlgoControl Control)
{
if (InterfaceFlux.ParameterOrdering.Count != InterfaceParams.Count)
{
throw new ArgumentException("Missmatch in Number of Parameters and expected amount in the given flux.");
}
this.InterfaceParams = InterfaceParams;
this.Control = Control;
int D = LSTrck.GridDat.SpatialDimension;
//this.InterfaceValue = InterfaceValue;
//InterfaceValue.Identification = "InterfaceValue";
this.Extension = Extension;
this.LevelSetTracker = LSTrck;
Phi = LevelSetTracker.LevelSets[0] as LevelSet;
this.LevelSetGradient = LevelSetGradient;
switch (Control.FluxVariant)
{
case FluxVariant.GradientBased:
// Flux Direction based on Mean Level Set Gradient
MeanLevelSetGradient = new VectorField <SinglePhaseField>(
D.ForLoop(
d => new SinglePhaseField(
new Basis(LSTrck.GridDat, 0), VariableNames.MeanLevelSetGradientComponent(d)
)
)
);
BulkParams = new List <DGField> {
};
BulkParams = ArrayTools.Cat(BulkParams, LevelSetGradient.ToArray(), Phi, MeanLevelSetGradient.ToArray(), InterfaceParams.ToArray());
break;
case FluxVariant.ValueBased:
// Flux Direction Based on Cell-Averaged Level-Set Value
MeanLevelSet = new SinglePhaseField(new Basis(LSTrck.GridDat, 0), "MeanLevelSet");
BulkParams = ArrayTools.Cat(LevelSetGradient.ToArray(), Phi, MeanLevelSet);
break;
case FluxVariant.SWIP:
BulkParams = LevelSetGradient.ToArray();
break;
default:
throw new NotImplementedException();
}
this.D = LevelSetTracker.GridDat.SpatialDimension;
double PenaltyBase = Control.PenaltyMultiplierFlux * ((double)((Phi.Basis.Degree + 1) * (Phi.Basis.Degree + D))) / ((double)D);
DefineBulkOperator(LSTrck, InterfaceFlux, D, PenaltyBase);
Operator_interface = InterfaceFlux.XOperator(QuadOrderFunc.FixedOrder(2 * Extension.Basis.Degree + 2));
}