Method AddMeshTriangle

Common/DataModel/vtkReebGraph.cxx:2859–2925

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//------------------------------------------------------------------------------
int vtkReebGraph::Implementation::AddMeshTriangle(
  vtkIdType vertex0Id, double f0, vtkIdType vertex1Id, double f1, vtkIdType vertex2Id, double f2)
{

  int vertex0 = this->VertexStream[vertex0Id], vertex1 = this->VertexStream[vertex1Id],
      vertex2 = this->VertexStream[vertex2Id];

  int N0 = this->VertexMap[vertex0];
  int N1 = this->VertexMap[vertex1];
  int N2 = this->VertexMap[vertex2];

  // Consistency less check
  if (f2 < f1 || (f2 == f1 && vertex2 < vertex1))
  {
    vtkReebGraphSwapVars(int, vertex1, vertex2);
    vtkReebGraphSwapVars(int, N1, N2);
    vtkReebGraphSwapVars(double, f1, f2);
  }
  if (f1 < f0 || (f1 == f0 && vertex1 < vertex0))
  {
    vtkReebGraphSwapVars(int, vertex0, vertex1);
    vtkReebGraphSwapVars(int, N0, N1);
    // there is a useless assignment to f0 below
    // keeping for clarity and consistency
    vtkReebGraphSwapVars(double, f0, f1);
  }
  if (f2 < f1 || (f2 == f1 && vertex2 < vertex1))
  {
    vtkReebGraphSwapVars(int, vertex1, vertex2);
    vtkReebGraphSwapVars(int, N1, N2);
    // there is a useless assignment below
    // keeping for clarity and consistency
    vtkReebGraphSwapVars(double, f1, f2);
  }

  vtkReebLabelTag Label01 = ((vtkReebLabelTag)vertex0) | (((vtkReebLabelTag)vertex1) << 32);
  vtkReebLabelTag Label12 = ((vtkReebLabelTag)vertex1) | (((vtkReebLabelTag)vertex2) << 32);
  vtkReebLabelTag Label02 = ((vtkReebLabelTag)vertex0) | (((vtkReebLabelTag)vertex2) << 32);

  if (!this->FindUpLabel(N0, Label01))
  {
    vtkIdType N01[] = { N0, N1 };
    this->AddPath(2, N01, Label01);
  }
  if (!this->FindUpLabel(N1, Label12))
  {
    vtkIdType N12[] = { N1, N2 };
    this->AddPath(2, N12, Label12);
  }
  if (!this->FindUpLabel(N0, Label02))
  {
    vtkIdType N02[] = { N0, N2 };
    this->AddPath(2, N02, Label02);
  }

  this->Collapse(N0, N1, Label01, Label02);
  this->Collapse(N1, N2, Label12, Label02);