From 8a65af67af063953a8605b3025efd546c93211e5 Mon Sep 17 00:00:00 2001 From: Wolfgang Bangerth Date: Fri, 21 Oct 2016 16:22:25 -0500 Subject: [PATCH] Add a comment. --- source/grid/grid_generator.cc | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/source/grid/grid_generator.cc b/source/grid/grid_generator.cc index 89fca82001..dad0f4a50a 100644 --- a/source/grid/grid_generator.cc +++ b/source/grid/grid_generator.cc @@ -4134,7 +4134,14 @@ namespace GridGenerator s.boundary_quads.push_back(quad); } - // use all of this to finally create the extruded 3d triangulation + // use all of this to finally create the extruded 3d + // triangulation. it is not necessary to call + // GridReordering<3,3>::reorder_cells because the cells we have + // constructed above are automatically correctly oriented. this is + // because the 2d base mesh is always correctly oriented, and + // extruding it automatically yields a correctly oriented 3d mesh, + // as discussed in the edge orientation paper mentioned in the + // introduction to the GridReordering class. result.create_triangulation (points, cells, s); -- 2.39.5