Method SetNumberOfTransforms

Filters/Hybrid/vtkWeightedTransformFilter.cxx:77–144

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void vtkWeightedTransformFilter::SetNumberOfTransforms(int num)
{
  int i;
  vtkAbstractTransform** newTransforms;

  if (num < 0)
  {
    vtkErrorMacro(<< "Cannot set transform count below zero");
    return;
  }

  if (this->Transforms == nullptr)
  {
    // first time
    this->Transforms = new vtkAbstractTransform*[num];
    for (i = 0; i < num; i++)
    {
      this->Transforms[i] = nullptr;
    }
    this->NumberOfTransforms = num;
    return;
  }

  if (num == this->NumberOfTransforms)
  {
    return;
  }

  if (num < this->NumberOfTransforms)
  {
    // create a smaller array, free up references to cut-off elements,
    // and copy other elements
    for (i = num; i < this->NumberOfTransforms; i++)
    {
      if (this->Transforms[i] != nullptr)
      {
        this->Transforms[i]->UnRegister(this);
        this->Transforms[i] = nullptr;
      }
    }
    newTransforms = new vtkAbstractTransform*[num];
    for (i = 0; i < num; i++)
    {
      newTransforms[i] = this->Transforms[i];
    }
    delete[] this->Transforms;
    this->Transforms = newTransforms;
  }
  else
  {
    // create a new array and copy elements, no unregistering needed.
    newTransforms = new vtkAbstractTransform*[num];
    for (i = 0; i < this->NumberOfTransforms; i++)
    {
      newTransforms[i] = this->Transforms[i];
    }

    for (i = this->NumberOfTransforms; i < num; i++)