From: hartmann <hartmann@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Wed, 28 Nov 2001 12:08:02 +0000 (+0000)
Subject: refine and coarsen functions failed when criteria.all_zero()==true. This is now fixed.
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=283cf33774525592a457c38504fbd30619f4d90d;p=dealii-svn.git

refine and coarsen functions failed when criteria.all_zero()==true. This is now fixed.


git-svn-id: https://svn.dealii.org/trunk@5291 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/deal.II/source/grid/grid_refinement.cc b/deal.II/deal.II/source/grid/grid_refinement.cc
index 0f7c109390..d0e22723bf 100644
--- a/deal.II/deal.II/source/grid/grid_refinement.cc
+++ b/deal.II/deal.II/source/grid/grid_refinement.cc
@@ -82,6 +82,12 @@ void GridRefinement::refine (Triangulation<dim>   &tria,
 	  ExcInvalidVectorSize(criteria.size(), tria.n_active_cells()));
   Assert (*std::min_element(criteria.begin(), criteria.end()) >= 0,
 	  ExcInvalidParameterValue());
+
+				   // when all indicators are zero we
+				   // do not need to refine but only
+				   // to coarsen
+  if (criteria.all_zero())
+    return;
   
   typename Triangulation<dim>::active_cell_iterator cell = tria.begin_active();
   const unsigned int n_cells = criteria.size();