From 0a969f82817595b1592f6e0e18cbc333ae822be0 Mon Sep 17 00:00:00 2001
From: adigitoleo <adigitoleo@posteo.net>
Date: Fri, 19 Apr 2024 00:30:54 +1000
Subject: [PATCH] fix: Fix fl-corner2d example

We need to spawn some particles to stop the h5part data from being cut
off when particles start to exit the domain. Within the particle
spawning shim, it's necessary to return an empty list (and not None) if
particles should not be spawned at that particular time.
---
 examples/fluidity/corner2d/corner2d.flml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/examples/fluidity/corner2d/corner2d.flml b/examples/fluidity/corner2d/corner2d.flml
index ca5d0861..1a344bf3 100644
--- a/examples/fluidity/corner2d/corner2d.flml
+++ b/examples/fluidity/corner2d/corner2d.flml
@@ -83,6 +83,17 @@
     return INITIAL_POSITIONS</string_value>
           </python>
         </initial_position>
+        <initialise_during_simulation>
+          <python>
+            <string_value type="code" language="python" lines="20">def val(t):
+    from corner2d import INITIAL_POSITIONS
+
+    if 8.7e13 &lt; t &lt; 8.75e13 or 4.3e14 &lt; t &lt; 4.4e14:
+        return INITIAL_POSITIONS
+    else:
+        return []</string_value>
+          </python>
+        </initialise_during_simulation>
         <attributes>
           <scalar_attribute_array name="CPO_">
             <dimension>