Method ClearBrushPoints

Views/Infovis/vtkParallelCoordinatesView.cxx:353–378

}

void vtkParallelCoordinatesView::ClearBrushPoints()
{
  this->NumberOfBrushPoints = 0;

  vtkIdType npts = this->BrushData->GetPoints()->GetNumberOfPoints();
  for (vtkIdType i = 0; i < npts; i++)
    this->BrushData->GetPoints()->SetPoint(i, -1, -1, 0);

  // clear them for all of the lines
  vtkNew<vtkIdList> cell;
  auto cellIter = vtk::TakeSmartPointer(this->BrushData->GetLines()->NewIterator());
  for (cellIter->GoToFirstCell(); !cellIter->IsDoneWithTraversal(); cellIter->GoToNextCell())
  {
    const vtkIdType cellNum = cellIter->GetCurrentCellId();
    cellIter->GetCurrentCell(cell);

    for (vtkIdType j = 0; j < cell->GetNumberOfIds(); j++)
    {
      cell->SetId(j, cellNum * this->MaximumNumberOfBrushPoints);
    }

    cellIter->ReplaceCurrentCell(cell);
  }

  this->BrushData->Modified();
}

//------------------------------------------------------------------------------
int vtkParallelCoordinatesView::AddLassoBrushPoint(double* p)