From 8b9849b07de325ebe1fbf413eddd571edc6449e4 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Wed, 8 Feb 2023 18:10:01 -0700
Subject: [PATCH] Get rid of two lambda functions by combining their action
 using ReferenceCell.

---
 source/base/qprojector.cc | 25 +++----------------------
 1 file changed, 3 insertions(+), 22 deletions(-)

diff --git a/source/base/qprojector.cc b/source/base/qprojector.cc
index e7b59b3427..35d43fb58b 100644
--- a/source/base/qprojector.cc
+++ b/source/base/qprojector.cc
@@ -643,24 +643,6 @@ Quadrature<3>
 QProjector<3>::project_to_all_faces(const ReferenceCell &     reference_cell,
                                     const hp::QCollection<2> &quadrature)
 {
-  const auto support_points_tri =
-    [](const std::vector<Point<3>> &face,
-       const unsigned char          orientation) -> std::vector<Point<3>> {
-    const boost::container::small_vector<Point<3>, 8> temp =
-      ReferenceCells::Triangle.permute_by_combined_orientation<Point<3>>(
-        face, orientation);
-    return std::vector<Point<3>>(temp.begin(), temp.end());
-  };
-
-  const auto support_points_quad =
-    [](const std::vector<Point<3>> &face,
-       const unsigned char          orientation) -> std::vector<Point<3>> {
-    const boost::container::small_vector<Point<3>, 8> temp =
-      ReferenceCells::Quadrilateral.permute_by_combined_orientation<Point<3>>(
-        face, orientation);
-    return std::vector<Point<3>>(temp.begin(), temp.end());
-  };
-
   const auto process = [&](const std::vector<std::vector<Point<3>>> &faces) {
     // new (projected) quadrature points and weights
     std::vector<Point<3>> points;
@@ -691,10 +673,9 @@ QProjector<3>::project_to_all_faces(const ReferenceCell &     reference_cell,
           {
             const auto &face = faces[face_no];
 
-            const auto support_points =
-              n_linear_shape_functions == 3 ?
-                support_points_tri(face, orientation) :
-                support_points_quad(face, orientation);
+            const boost::container::small_vector<Point<3>, 8> support_points =
+              reference_cell.face_reference_cell(face_no)
+                .permute_by_combined_orientation<Point<3>>(face, orientation);
 
             // the quadrature rule to be projected ...
             const auto &sub_quadrature_points =
-- 
2.39.5