Merge pull request #12843 from bangerth/refcell

Systematize vertex construction.
dealii · Oct 19, 2021 · 6e182af · 6e182af
2 parents 84e3ecb + 16decae
commit 6e182af
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/include/deal.II/grid/reference_cell.h b/include/deal.II/grid/reference_cell.h
@@ -884,10 +884,12 @@ ReferenceCell::vertex(const unsigned int v) const
     }
   else if ((dim == 3) && (*this == ReferenceCells::Tetrahedron))
     {
-      static const Point<dim> vertices[4] = {Point<dim>{0.0, 0.0, 0.0},
-                                             Point<dim>{1.0, 0.0, 0.0},
-                                             Point<dim>{0.0, 1.0, 0.0},
-                                             Point<dim>{0.0, 0.0, 1.0}};
+      static const Point<dim> vertices[4] = {
+        Point<dim>(),               // the origin
+        Point<dim>::unit_vector(0), // unit point along x-axis
+        Point<dim>::unit_vector(1), // unit point along y-axis
+        Point<dim>::unit_vector(2)  // unit point along z-axis
+      };
       return vertices[v];
     }
   else if ((dim == 3) && (*this == ReferenceCells::Pyramid))