From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Fri, 3 Jul 1998 09:12:55 +0000 (+0000)
Subject: Aim at equilibrating cell sizes at the transition from the inner part of the triangul... 
X-Git-Tag: v8.0.0~22819
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=822d1d6a74cb6961533545cb012ace43d4a9e71c;p=dealii.git

Aim at equilibrating cell sizes at the transition from the inner part of the triangulation of the circle to the radial cells.


git-svn-id: https://svn.dealii.org/trunk@435 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/deal.II/source/grid/tria.cc b/deal.II/deal.II/source/grid/tria.cc
index 5470960a93..ff8cbb8221 100644
--- a/deal.II/deal.II/source/grid/tria.cc
+++ b/deal.II/deal.II/source/grid/tria.cc
@@ -605,7 +605,9 @@ void Triangulation<2>::create_hyper_L (const double a, const double b) {
 template <>
 void Triangulation<2>::create_hyper_ball (const Point<2> &p, const double radius) {
   const unsigned int dim=2;
-  const double a = 1./(1+sqrt(2)/2);         // equilibrate cell sizes
+  const double a = 1./(1+sqrt(2)); // equilibrate cell sizes at transition
+				   // from the inner part to the radial
+				   // cells
   const Point<dim> vertices[8] = { p+Point<dim>(-1,-1)*(radius/sqrt(2)),
 				   p+Point<dim>(+1,-1)*(radius/sqrt(2)),
 				   p+Point<dim>(-1,-1)*(radius/sqrt(2)*a),