Method InitFastGeomQuadAllocation

Filters/Geometry/vtkDataSetSurfaceFilter.cxx:2567–2597

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//------------------------------------------------------------------------------
void vtkDataSetSurfaceFilter::InitFastGeomQuadAllocation(vtkIdType numberOfCells)
{
  int idx;

  this->DeleteAllFastGeomQuads();
  // Allocate 100 pointers to arrays.
  // This should be plenty (unless we have triangle strips) ...
  this->NumberOfFastGeomQuadArrays = 100;
  this->FastGeomQuadArrays = new unsigned char*[this->NumberOfFastGeomQuadArrays];
  // Initialize all to nullptr;
  for (idx = 0; idx < this->NumberOfFastGeomQuadArrays; ++idx)
  {
    this->FastGeomQuadArrays[idx] = nullptr;
  }
  // Set pointer to the beginning.
  this->NextArrayIndex = 0;
  this->NextQuadIndex = 0;

  // size the chunks based on the size of a quadrilateral
  int quadSize = sizeofFastQuad(4);

  // Lets keep the chunk size relatively small.
  if (numberOfCells < 100)
  {
    this->FastGeomQuadArrayLength = 50 * quadSize;
  }
  else
  {
    this->FastGeomQuadArrayLength = (numberOfCells / 2) * quadSize;
  }
}

//------------------------------------------------------------------------------
void vtkDataSetSurfaceFilter::DeleteAllFastGeomQuads()