From fd4d19bf8dd04a978a6cad4d89949f3c08a1cd78 Mon Sep 17 00:00:00 2001
From: Lex Neva <github.com@lexneva.name>
Date: Sun, 31 Dec 2017 22:28:43 -0500
Subject: [PATCH] don't start outdated simulation

---
 embroider_params.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/embroider_params.py b/embroider_params.py
index 8300cbc24..ffd9d53ae 100644
--- a/embroider_params.py
+++ b/embroider_params.py
@@ -388,7 +388,7 @@ class SettingsFrame(wx.Frame):
     def update_patches(self):
         patches = self.generate_patches()
 
-        if patches:
+        if patches and not self.simulate_refresh_needed.is_set():
             wx.CallAfter(self.refresh_simulator, patches)
 
     def refresh_simulator(self, patches):