From 19f3f23d25fdd57c99e1e5f363ea8da6f0b1b6bb Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Tue, 30 May 2017 19:29:16 +0200
Subject: [PATCH] handcrafted surface_mesh::degree() function

---
 .../include/CGAL/Surface_mesh/Surface_mesh.h    | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/Surface_mesh/include/CGAL/Surface_mesh/Surface_mesh.h b/Surface_mesh/include/CGAL/Surface_mesh/Surface_mesh.h
index fa1fcd68d72..7adc71945ca 100644
--- a/Surface_mesh/include/CGAL/Surface_mesh/Surface_mesh.h
+++ b/Surface_mesh/include/CGAL/Surface_mesh/Surface_mesh.h
@@ -2376,16 +2376,17 @@ typename Surface_mesh<P>::size_type
 Surface_mesh<P>::
 degree(Vertex_index v) const
 {
-    size_type count(0);
-    if(halfedge(v) == null_halfedge()){
+    Halfedge_index h = halfedge(v);
+
+    if(h == null_halfedge()){
       return 0;
     }
-    Vertex_around_target_circulator vvit(halfedge(v), *this);
-    Vertex_around_target_circulator vvend = vvit;
-    if(vvit) do
-    {
-        ++count;
-    } while (++vvit != vvend);
+    size_type count(0);
+    Halfedge_index done = h;
+    do {
+      ++count;
+      h = opposite(next(h));
+    }while(h != done);
 
     return count;
 }