From 2cfc1cc85b29bc82fce96082f0a559e5df42c9ae Mon Sep 17 00:00:00 2001
From: PaddleStroke <pierrelouis.boyer@gmail.com>
Date: Thu, 14 Mar 2024 17:10:25 +0100
Subject: [PATCH] Assembly: Fix distance 0 between 2 vertex. Issue mentioned in
 #12490

---
 src/Mod/Assembly/App/AssemblyObject.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Mod/Assembly/App/AssemblyObject.cpp b/src/Mod/Assembly/App/AssemblyObject.cpp
index 3ca1b7e60a..2fba4b82ad 100644
--- a/src/Mod/Assembly/App/AssemblyObject.cpp
+++ b/src/Mod/Assembly/App/AssemblyObject.cpp
@@ -785,8 +785,12 @@ std::shared_ptr<ASMTJoint> AssemblyObject::makeMbdJointDistance(App::DocumentObj
 
     if (type == DistanceType::PointPoint) {
         // Point to point distance, or ball joint if distance=0.
+        double distance = getJointDistance(joint);
+        if (distance < Precision::Confusion()) {
+            return CREATE<ASMTSphericalJoint>::With();
+        }
         auto mbdJoint = CREATE<ASMTSphSphJoint>::With();
-        mbdJoint->distanceIJ = getJointDistance(joint);
+        mbdJoint->distanceIJ = distance;
         return mbdJoint;
     }