  /*************************************************************************/
  // Retrieve two points from scalar opacity transfer function
  double v1, v2;
  v1 = myTransferFunction->GetScalarOpacityFunction()->GetValue(3.0);
  v2 = myTransferFunction->GetScalarOpacityFunction()->GetValue(10.0);
  MITK_TEST_CONDITION_REQUIRED((fabs(v1 - 0.2) < 1.0e-5) && (fabs(v2 - 1.0) < 1.0e-5),
                               "Retrieving values at two points from scalar opacity transfer function");
