From aebf568eaec7f62b95b29037851c04d1a6f65d47 Mon Sep 17 00:00:00 2001
From: Roy-043 <70520633+Roy-043@users.noreply.github.com>
Date: Tue, 27 Oct 2020 12:07:22 +0100
Subject: [PATCH] Draft: Draft_Dimension_linked_geometry_fix

Linked geometry was not handled if the selected edge started or ended at vertex zero.
---
 src/Mod/Draft/draftguitools/gui_dimensions.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Draft/draftguitools/gui_dimensions.py b/src/Mod/Draft/draftguitools/gui_dimensions.py
index 0b37e41f9f2d..7d8acfe642e9 100644
--- a/src/Mod/Draft/draftguitools/gui_dimensions.py
+++ b/src/Mod/Draft/draftguitools/gui_dimensions.py
@@ -168,7 +168,7 @@ def set_selection(self):
                     if v.Point == edge.Vertexes[1].Point:
                         v2 = i
 
-                if v1 and v2:
+                if v1 != None and v2 != None: # note that v1 or v2 can be zero
                     self.link = [sel_object.Object, v1, v2]
             elif DraftGeomUtils.geomType(edge) == "Circle":
                 self.node.extend([edge.Curve.Center,