void GetAllSignCodesRecursive(int iLs, int NoOfLS, List <LevelSetSignCode> R, bool[] PrevSigns)
{
Debug.Assert(PrevSigns.Length == iLs);
bool[] Sings_iLs;
switch (GetSign(iLs))
{
case LevelsetSign.Negative: Sings_iLs = new bool[] { false }; break;
case LevelsetSign.Positive: Sings_iLs = new bool[] { true }; break;
case LevelsetSign.Both: Sings_iLs = new bool[] { false, true }; break;
default: throw new NotImplementedException();
}
bool[] AllSigns = new bool[PrevSigns.Length + 1];
if (PrevSigns.Length > 0)
{
Array.Copy(PrevSigns, AllSigns, PrevSigns.Length);
}
if (iLs < NoOfLS - 1)
{
foreach (bool b in Sings_iLs)
{
AllSigns[iLs] = b;
GetAllSignCodesRecursive(iLs + 1, NoOfLS, R, AllSigns);
}
}
else
{
// end of recursion
Debug.Assert(AllSigns.Length == NoOfLS);
foreach (bool b in Sings_iLs)
{
AllSigns[iLs] = b;
var lssc = new LevelSetSignCode();
lssc.SetSigns(AllSigns);
R.Add(lssc);
}
}
}
/// <summary>
/// true, if <paramref name="cd"/> is contained in this
/// </summary>
public bool IsContained(LevelSetSignCode cd, int NoOfSignificant_LevSets)
{
for (int i = 0; i < NoOfSignificant_LevSets; i++)
{
LevelsetSign ls_i = GetSign(i);
if (ls_i == LevelsetSign.Both)
{
continue;
}
LevelsetSign sg = cd.GetSign(i) ? LevelsetSign.Positive : LevelsetSign.Negative;
if (sg != ls_i)
{
return(false);
}
}
return(true);
}
/// <summary>
/// evaluation of field in cut- or near - cells;
/// </summary>
private void EvaluateMultiphase(int jCell, NodeSet NS, ReducedRegionCode ReducedRegionCode, int NoOfSpecies, MultidimensionalArray result, int ResultCellindexOffset, double ResultPreScale,
EvaluateInternalSignature EvalFunc,
ref MultidimensionalArray[] Buffer, Func <int, int[]> BufferDim,
Picker p)
{
LevelSetTracker trk = this.Basis.Tracker;
int NoOfLevSets = trk.LevelSets.Count;
int M = NS.NoOfNodes;
{
//var resultAcc = result.ExtractSubArrayShallow(new int[] { ResultCellindexOffset + j, 0 }, new int[] { ResultCellindexOffset + j, M - 1 });
ushort RegionCode = trk.Regions.m_LevSetRegions[jCell];
bool OnlyOneSpecies = true;
for (int i = 0; i < NoOfLevSets; i++)
{
int dst = LevelSetTracker.DecodeLevelSetDist(RegionCode, i);
if (dst == 0)
{
// cut-cell with respect or levelset #i
// +++++++++++++++++++++++++++++++++++++
OnlyOneSpecies = false;
_levSetVals[i] = trk.DataHistories[i].Current.GetLevSetValues(NS, jCell, 1);
}
else
{
// near-cell with respect or levelset #i
// +++++++++++++++++++++++++++++++++++++
// find the species index...
_levSetVals[i] = null;
_levSetSign[i] = dst;
}
//_levSetSign2[i] = dst;
}
if (OnlyOneSpecies)
{
// all level sets are 'NEAR'
// +++++++++++++++++++++++++
LevelSetSignCode levset_bytecode = LevelSetSignCode.ComputeLevelSetBytecode(_levSetSign);
int SpecInd = trk.GetSpeciesIndex(ReducedRegionCode, levset_bytecode);
// evaluate species ...
Evaluate_ithSpecies(jCell, NS, result, ResultCellindexOffset, ResultPreScale, SpecInd, EvalFunc);
}
else
{
// at least one cell is 'CUT'
// ++++++++++++++++++++++++++
// allocate buffers/evaluate all species ...
if (Buffer.Length < NoOfSpecies)
{
int oldL = Buffer.Length;
Array.Resize(ref Buffer, NoOfSpecies);
for (int i = oldL; i < NoOfSpecies; i++)
{
Buffer[i] = MultidimensionalArray.Create(BufferDim(M));
}
}
for (int i = 0; i < NoOfSpecies; i++)
{
if (Buffer[i].Dimension > 1 && Buffer[i].GetLength(1) != M)
{
Buffer[i].Allocate(BufferDim(M));
}
this.Evaluate_ithSpecies(jCell, NS, Buffer[i], 0, 0.0, i, EvalFunc);
}
// ... and pick the right species for the Node
for (int m = 0; m < M; m++) // loop over nodes
{
for (int i = 0; i < NoOfLevSets; i++)
{
if (_levSetVals[i] != null)
{
_levSetSign[i] = _levSetVals[i][0, m];
}
}
LevelSetSignCode levset_bytecode = LevelSetSignCode.ComputeLevelSetBytecode(_levSetSign);
int SpecInd = trk.GetSpeciesIndex(ReducedRegionCode, levset_bytecode);
p(result, ResultCellindexOffset, m, SpecInd, Buffer);
}
}
}
}
protected override void ComputeValues(NodeSet NS, int j0, int Len, MultidimensionalArray output)
{
Debug.Assert(CheckAll(j0, Len), "basis length must be equal for all cells from j0 to j0+Len");
int l0 = m_Owner.GetLength(j0);
var trk = m_Owner.Tracker;
// evaluation of un-cut polynomials
// ================================
var BasisValues = NonXEval(NS, j0, Len);
// evaluation of XDG
// =================
if (l0 == m_Owner.NonX_Basis.Length)
{
// uncut region -> evaluation is equal to uncut basis
// ++++++++++++++++++++++++++++++++++++++++++++++++++
output.Set(BasisValues);
}
else
{
// modulated basis polynomials
// +++++++++++++++++++++++++++
int NoOfLevSets = trk.LevelSets.Count;
int M = output.GetLength(1); // number of nodes
output.Clear();
ReducedRegionCode rrc;
int NoOfSpecies = trk.Regions.GetNoOfSpecies(j0, out rrc);
int Nsep = m_Owner.DOFperSpeciesPerCell;
for (int j = 0; j < Len; j++) // loop over cells
{
int jCell = j + j0;
ushort RegionCode = trk.Regions.m_LevSetRegions[jCell];
int dist = 0;
for (int i = 0; i < NoOfLevSets; i++)
{
dist = LevelSetTracker.DecodeLevelSetDist(RegionCode, i);
if (dist == 0)
{
m_levSetVals[i] = trk.DataHistories[i].Current.GetLevSetValues(NS, jCell, 1);
}
else
{
//_levSetVals[i] = m_CCBasis.Tracker.GetLevSetValues(i, NodeSet, jCell, 1);
m_levSetVals[i] = null;
m_levSetSign[i] = dist;
}
}
LevelSetSignCode levset_bytecode;
int SpecInd;
if (dist != 0)
{
// near - field:
// Basis contains zero-entries
// ++++++++++++++++++++++++++++
levset_bytecode = LevelSetSignCode.ComputeLevelSetBytecode(m_levSetSign);
SpecInd = trk.GetSpeciesIndex(rrc, levset_bytecode);
}
else
{
levset_bytecode = default(LevelSetSignCode);
SpecInd = 0;
}
for (int m = 0; m < M; m++) // loop over nodes
{
if (dist == 0)
{
// cut cells
// Modulation necessary
// +++++++++++++++++++++
for (int i = 0; i < NoOfLevSets; i++)
{
if (m_levSetVals[i] != null)
{
m_levSetSign[i] = m_levSetVals[i][0, m];
}
}
// re-compute species index
levset_bytecode = LevelSetSignCode.ComputeLevelSetBytecode(m_levSetSign);
SpecInd = trk.GetSpeciesIndex(rrc, levset_bytecode);
}
// separate coordinates
{
int n0 = Nsep * SpecInd;
for (int n = 0; n < Nsep; n++) // loop over basis polynomials
//output[j, m, n0 + n] = BasisValues[m, n];
{
Operation(output, BasisValues, j, m, n0 + n, n);
}
}
}
}
}
}