From 6500a872eb8ccc632dd7b705c86418ca8ec41a92 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@freecad.org>
Date: Sat, 5 Apr 2025 22:06:08 +0200
Subject: [PATCH] Part: Improve TopoShape::findPlane

Since OCC 7.7 using GeomLib_IsPlanarSurface without a custom tolerance may fail because the default value is too strict.
To fix this problem forward the passed tolerance value to GeomLib_IsPlanarSurface.

This fixes issue 20633
---
 src/Mod/Part/App/TopoShape.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 28cc7198ce..6e4fce8e24 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -3970,7 +3970,7 @@ bool TopoShape::findPlane(gp_Pln& pln, double tol, double atol) const
             else {
                 TopLoc_Location loc;
                 Handle(Geom_Surface) surf = BRep_Tool::Surface(face, loc);
-                GeomLib_IsPlanarSurface check(surf);
+                GeomLib_IsPlanarSurface check(surf, tol);
                 if (check.IsPlanar()) {
                     plane = check.Plan();
                 }