Method TriangulateLocalIds

Common/DataModel/vtkConvexPointSet.cxx:98–134

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//------------------------------------------------------------------------------
int vtkConvexPointSet::TriangulateLocalIds(int vtkNotUsed(index), vtkIdList* ptIds)
{
  vtkIdType numPts = this->GetNumberOfPoints();
  double x[3];
  vtkIdType ptId;

  // Initialize
  ptIds->Reset();
  if (numPts < 1)
  {
    return 0;
  }

  // Initialize Delaunay insertion process.
  // No more than numPts points can be inserted.
  this->Triangulator->InitTriangulation(this->GetBounds(), numPts);

  // Inject cell points into triangulation. Recall that the PreSortedOff()
  // flag was set which means that the triangulator will order the points
  // according to point id. We insert points with id == the index into the
  // vtkConvexPointSet::PointIds and Points; but sort on the global point
  // id.
  for (vtkIdType i = 0; i < numPts; i++)
  {
    ptId = i; // Do not use this->PointIds->GetId(i) because we want local cell point ids
    this->Points->GetPoint(i, x);
    this->Triangulator->InsertPoint(i, ptId, x, x, 0);
  } // for all points

  // triangulate the points
  this->Triangulator->Triangulate();

  // Add the triangulation to the mesh
  this->Triangulator->AddTetras(0, ptIds);

  return 1;
}

//------------------------------------------------------------------------------
void vtkConvexPointSet::Contour(double value, vtkDataArray* cellScalars,