From 66e7e998af4f37b70b48f6dbf6526724adfbd76e Mon Sep 17 00:00:00 2001
From: Patrick Shriwise <pshriwise@gmail.com>
Date: Wed, 31 Mar 2021 23:31:12 -0500
Subject: [PATCH] Always call LocalCoord::rotate and set LocalCoord::rotated.

---
 src/geometry.cpp | 4 +---
 src/particle.cpp | 4 ++++
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/geometry.cpp b/src/geometry.cpp
index 8e6519fa86..9d612412b5 100644
--- a/src/geometry.cpp
+++ b/src/geometry.cpp
@@ -188,9 +188,7 @@ find_cell_inner(Particle& p, const NeighborList* neighbor_list)
       coord.r -= c.translation_;
 
       // Apply rotation.
-      if (!c.rotation_.empty()) {
-        coord.rotate(c.rotation_);
-      }
+      coord.rotate(c.rotation_);
 
     } else if (c.type_ == Fill::LATTICE) {
       //========================================================================
diff --git a/src/particle.cpp b/src/particle.cpp
index 2e24131742..d05b81d848 100644
--- a/src/particle.cpp
+++ b/src/particle.cpp
@@ -38,6 +38,10 @@ namespace openmc {
 void
 LocalCoord::rotate(const std::vector<double>& rotation)
 {
+  if (rotation.empty()) {
+    this->rotated = false;
+    return;
+  }
   this->r = this->r.rotate(rotation);
   this->u = this->u.rotate(rotation);
   this->rotated = true;