message: Flip point matrix in 2D.
diff: @@ -1635,6 +1635,14 @@ const DenseMatrix* InterpolationManager::GetCoarseToFineInterpolation(
  IsoparametricTransformation isotr;
  isotr.SetIdentityTransformation(trace_fe->GetGeomType());
  isotr.SetPointMat(*ptMat);
  + DenseMatrix& trans_pt_mat = isotr.GetPointMat();
  + trans_pt_mat = (*ptMat);
  + // PointMatrix needs to be flipped in 2D
  + if ( trace_fe->GetGeomType()==Geometry::SEGMENT &&
  + !face.IsSharedNonConformingSlave() )
  + {
  + std::swap(trans_pt_mat(0,0),trans_pt_mat(0,1));
  + }
  // trace_fe->GetLocalInterpolation(isotr, *interpolator);
  DenseMatrix native_interpolator(face_dofs,face_dofs);
  trace_fe->GetLocalInterpolation(isotr, native_interpolator);
  