From 11704338853f0d9ccd684657c036c21d7b24d6ba Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Fri, 9 Feb 2018 14:23:40 +0000
Subject: [PATCH] Comment what default means

---
 .../Triangle_3_Segment_3_intersection.h              | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Segment_3_intersection.h b/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Segment_3_intersection.h
index 9b4051fb186..320919e4593 100644
--- a/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Segment_3_intersection.h
+++ b/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Segment_3_intersection.h
@@ -280,7 +280,7 @@ intersection_coplanar(const typename K::Triangle_3 &t,
             case NEGATIVE:
               // a is isolated on the positive side
               return t3s3_intersection_coplanar_aux(b,c,a,q,p,false,k);
-            default:
+            default: // COLLINEAR
               // b,c,p,q are aligned, [p,q]&[b,c] have the same direction
               return t3s3_intersection_collinear_aux(b,c,p,q,k);
           }
@@ -311,7 +311,7 @@ intersection_coplanar(const typename K::Triangle_3 &t,
               // the triangle lies in the negative halfspace
               // defined by the segment's supporting line.
               return intersection_return<typename K::Intersect_3, typename K::Segment_3, typename K::Triangle_3>();
-            default:
+            default: // COLLINEAR
               if ( collinear_ordered(p,c,q) ) // c is inside [p,q]
                 return intersection_return<typename K::Intersect_3, typename K::Segment_3, typename K::Triangle_3>(c);
               else
@@ -328,7 +328,7 @@ intersection_coplanar(const typename K::Triangle_3 &t,
                 return intersection_return<typename K::Intersect_3, typename K::Segment_3, typename K::Triangle_3>(b);
               else
                 return intersection_return<typename K::Intersect_3, typename K::Segment_3, typename K::Triangle_3>();
-            default:
+            default: // COLLINEAR
               // b,c,p,q are aligned, [p,q]&[c,b] have the same direction
               return t3s3_intersection_collinear_aux(c,b,p,q,k);
           }
@@ -353,7 +353,7 @@ intersection_coplanar(const typename K::Triangle_3 &t,
             case NEGATIVE:
               // b is isolated on the positive side
               return t3s3_intersection_coplanar_aux(c,a,b,q,p,false,k);
-            default:
+            default: // COLLINEAR
               // a,c,p,q are aligned, [p,q]&[c,a] have the same direction
               return t3s3_intersection_collinear_aux(c,a,p,q,k);
           }
@@ -368,7 +368,7 @@ intersection_coplanar(const typename K::Triangle_3 &t,
                 return intersection_return<typename K::Intersect_3, typename K::Segment_3, typename K::Triangle_3>(a);
               else
                 return intersection_return<typename K::Intersect_3, typename K::Segment_3, typename K::Triangle_3>();
-            default:
+            default: // COLLINEAR
               // a,c,p,q are aligned, [p,q]&[a,c] have the same direction
               return t3s3_intersection_collinear_aux(a,c,p,q,k);
           }
@@ -381,7 +381,7 @@ intersection_coplanar(const typename K::Triangle_3 &t,
             case NEGATIVE:
               // a,b,p,q are aligned, [p,q]&[b,a] have the same direction
               return t3s3_intersection_collinear_aux(b,a,p,q,k);
-            default:
+            default:  // COLLINEAR
               // case pqc == COLLINEAR is impossible since the triangle is
               // assumed to be non flat
               CGAL_error();