Method SetNumberOfHandles

Interaction/Widgets/vtkCameraPathRepresentation.cxx:139–178

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//------------------------------------------------------------------------------
void vtkCameraPathRepresentation::SetNumberOfHandles(int npts)
{
  if (this->NumberOfHandles == npts)
  {
    return;
  }

  if (npts < 0)
  {
    vtkErrorMacro(<< "ERROR: Invalid npts, must be >= 0\n");
    return;
  }

  if (npts == 0)
  {
    this->ClearCameraHandles();
    this->NumberOfHandles = 0;
    this->CleanRepresentation();
    vtkGenericWarningMacro(
      << "vtkCameraPathRepresentation: there is not any camera handle defined at the moment.");
    return;
  }

  // Ensure no handle is highlighted
  this->HighlightHandle(nullptr);

  if (this->GetParametricSpline() && this->NumberOfHandles > 1)
  {
    this->ReconfigureHandles(npts, this->NumberOfHandles);
  }
  else
  {
    // reallocate the handles
    this->CreateDefaultHandles(npts);
  }

  this->NumberOfHandles = npts;

  this->RebuildRepresentation();
}

//------------------------------------------------------------------------------
void vtkCameraPathRepresentation::SetParametricSpline(vtkParametricSpline* spline)