From f09bf02b6d7906f52e1fb1edf917b219ec988bd4 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sun, 14 May 2023 18:12:50 +0200
Subject: [PATCH] Part: fixes #5967: Weird behavior in Placement dialog when
 using "center of mass" with Datum Plane

---
 src/Mod/Part/App/TopoShape.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 98a6428d0b..36ce36688a 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -1223,6 +1223,9 @@ bool TopoShape::getCenterOfGravity(Base::Vector3d& center) const
     // Computing of CentreOfMass
     GProp_GProps prop;
     if (getShapeProperties(_Shape, prop)) {
+        if (prop.Mass() > Precision::Infinite()) {
+            return false;
+        }
         gp_Pnt pnt = prop.CentreOfMass();
         center.Set(pnt.X(), pnt.Y(), pnt.Z());
         return true;