From 28fa5ecd2b5f70740522bfbb37eb1c782cc6f03c Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Tue, 29 Mar 2022 17:17:26 +0100
Subject: [PATCH] Fix API of Default visitor

---
 .../internal/Corefinement/intersection_impl.h              | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Corefinement/intersection_impl.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Corefinement/intersection_impl.h
index 295de1aaacf..beaf89b7c61 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Corefinement/intersection_impl.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Corefinement/intersection_impl.h
@@ -120,6 +120,13 @@ struct Default_surface_intersection_visitor{
     const TriangleMesh&,
     const Non_manifold_feature_map<TriangleMesh>&)
   {}
+
+  // needed for progress tracking
+  void progress_filter_intersection(double d){}
+
+  void start_filter_intersections() const {}
+
+  void end_filter_intersections() const {}
 };
 
 struct Node_id_set {