From 38a23a84a739f7b895ba7d50a15cd1f37ada6957 Mon Sep 17 00:00:00 2001
From: Giles Bathgate <giles.bathgate@gmail.com>
Date: Mon, 19 Jul 2021 17:38:07 +0100
Subject: [PATCH] Remove redundant comparison functors

---
 Nef_3/include/CGAL/Nef_3/K3_tree.h            | 26 -----------
 Nef_3/include/CGAL/Nef_3/SNC_k3_tree_traits.h | 43 -------------------
 2 files changed, 69 deletions(-)

diff --git a/Nef_3/include/CGAL/Nef_3/K3_tree.h b/Nef_3/include/CGAL/Nef_3/K3_tree.h
index 25fb6c76df1..dc819e5f607 100644
--- a/Nef_3/include/CGAL/Nef_3/K3_tree.h
+++ b/Nef_3/include/CGAL/Nef_3/K3_tree.h
@@ -62,32 +62,6 @@ private:
   Coordinate coord;
 };
 
-
-template <typename Vertex, typename Coordinate, typename EK>
-  class Smaller_than<CGAL::Lazy_kernel<EK>, Vertex, Coordinate>
-{
-public:
-  Smaller_than(Coordinate c) : coord(c) {
-    CGAL_assertion( c >= 0 && c <=2);
-  }
-  bool operator()( const Vertex& v1, const Vertex& v2) {
-    switch(coord) {
-    case 0: return CGAL::to_interval(v1->point().x()).second <
-                           CGAL::to_interval(v2->point().x()).first;
-    case 1: return CGAL::to_interval(v1->point().y()).second <
-                           CGAL::to_interval(v2->point().y()).first;
-    case 2: return CGAL::to_interval(v1->point().z()).second <
-                           CGAL::to_interval(v2->point().z()).first;
-    default: CGAL_error();
-    }
-    return false;
-  }
-
-private:
-  Coordinate coord;
-};
-
-
 public:
   friend class Objects_along_ray;
   friend class Objects_around_segment;
diff --git a/Nef_3/include/CGAL/Nef_3/SNC_k3_tree_traits.h b/Nef_3/include/CGAL/Nef_3/SNC_k3_tree_traits.h
index 38201f2ce18..dffe54492bc 100644
--- a/Nef_3/include/CGAL/Nef_3/SNC_k3_tree_traits.h
+++ b/Nef_3/include/CGAL/Nef_3/SNC_k3_tree_traits.h
@@ -56,49 +56,6 @@ private:
 };
 
 
-template <typename Coordinate, typename EK>
-class Compare_points<CGAL::Lazy_kernel<EK>, Coordinate> {
-
-  typedef CGAL::Lazy_kernel<EK>     Kernel;
-  typedef typename Kernel::Point_3  Point_3;
- public:
-  Compare_points(Coordinate c) : coord(c) {
-    CGAL_assertion( c >= 0 && c <=2);
-  }
-  CGAL::Comparison_result operator()( const Point_3& p1, const Point_3& p2) {
-    switch(coord) {
-    case 0:
-      if(CGAL::to_interval(p1.x()).second <
-         CGAL::to_interval(p2.x()).first)
-        return CGAL::SMALLER;
-      else if(CGAL::to_interval(p2.x()).second <
-              CGAL::to_interval(p1.x()).first)
-        return CGAL::LARGER;
-      return CGAL::EQUAL;
-    case 1:
-      if(CGAL::to_interval(p1.y()).second <
-         CGAL::to_interval(p2.y()).first)
-        return CGAL::SMALLER;
-      else if(CGAL::to_interval(p2.y()).second <
-              CGAL::to_interval(p1.y()).first)
-        return CGAL::LARGER;
-      return CGAL::EQUAL;
-    case 2:
-      if(CGAL::to_interval(p1.z()).second <
-         CGAL::to_interval(p2.z()).first)
-        return CGAL::SMALLER;
-      else if(CGAL::to_interval(p2.z()).second <
-              CGAL::to_interval(p1.z()).first)
-        return CGAL::LARGER;
-      return CGAL::EQUAL;
-    default: CGAL_error();
-    }
-    return CGAL::EQUAL;
-  }
-private:
-  Coordinate coord;
-};
-
 template <class SNC_decorator>
 class Side_of_plane {