From: Wolfgang Bangerth Date: Mon, 23 Jan 2006 23:21:47 +0000 (+0000) Subject: Add one more link. X-Git-Tag: v8.0.0~12539 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f9340797863e328577de5c1ccee1de845c289087;p=dealii.git Add one more link. git-svn-id: https://svn.dealii.org/trunk@12136 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/deal.II/include/grid/tria.h b/deal.II/deal.II/include/grid/tria.h index c01196e3b1..56fe2b2f34 100644 --- a/deal.II/deal.II/include/grid/tria.h +++ b/deal.II/deal.II/include/grid/tria.h @@ -1395,9 +1395,12 @@ namespace internal * * The face normals can be deduced from the face orientation by * applying the right hand side rule (x,y -> normal). We note, that - * in the standard orientation of faces in 3d, faces 0, 2, and 4 + * in the standard orientation of faces in 2d, faces 0 and 2 have + * normals that point into the cell, and faces 1 and 3 have normals + * pointing outward. In 3d, faces 0, 2, and 4 * have normals that point into the cell, while the normals of faces - * 1, 3, and 5 point outward. + * 1, 3, and 5 point outward. This information, again, can be queried from + * GeometryInfo::unit_normal_orientation. * * However, it turns out that a significant number of meshes cannot * satisfy this convention. This is due to the fact that the face