From f29efdeaf0c6deb786d80a1af1ecf0c080b4cffc Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Tue, 22 Mar 2022 12:22:46 -0600
Subject: [PATCH] Add an assertion.

---
 source/particles/generators.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/particles/generators.cc b/source/particles/generators.cc
index bcb04164dc..f4604217ce 100644
--- a/source/particles/generators.cc
+++ b/source/particles/generators.cc
@@ -121,6 +121,9 @@ namespace Particles
         const Mapping<dim, spacedim> &mapping,
         std::mt19937 &                random_number_generator)
       {
+        Assert(cell->reference_cell().is_hyper_cube() == true,
+               ExcNotImplemented());
+
         // Uniform distribution on the interval [0,1]. This
         // will be used to generate random particle locations.
         std::uniform_real_distribution<double> uniform_distribution_01(0, 1);
-- 
2.39.5