vtkActor aLineActor = new vtkActor();
aLineActor.SetMapper(aLineMapper);
//aLineActor.GetProperty().SetDiffuseColor(.2, 1, 1);
vtkActor aLineActor = new vtkActor();
aLineActor.SetMapper(aLineMapper);
//aLineActor.GetProperty().SetDiffuseColor(.2, 1, 1);