Method InvertTable

Interaction/Widgets/vtkImagePlaneWidget.cxx:1205–1225

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//------------------------------------------------------------------------------
void vtkImagePlaneWidget::InvertTable()
{
  int index = this->LookupTable->GetNumberOfTableValues();
  unsigned char swap[4];
  size_t num = 4 * sizeof(unsigned char);
  vtkUnsignedCharArray* table = this->LookupTable->GetTable();
  for (int count = 0; count < --index; count++)
  {
    unsigned char* rgba1 = table->GetPointer(4 * count);
    unsigned char* rgba2 = table->GetPointer(4 * index);
    memcpy(swap, rgba1, num);
    memcpy(rgba1, rgba2, num);
    memcpy(rgba2, swap, num);
  }

  // force the lookuptable to update its InsertTime to avoid
  // rebuilding the array
  double temp[4];
  this->LookupTable->GetTableValue(0, temp);
  this->LookupTable->SetTableValue(0, temp);
}

//------------------------------------------------------------------------------
void vtkImagePlaneWidget::SetWindowLevel(double window, double level, int copy)