From 7cd501f5eea43978b9db218b44d864f13b50916a Mon Sep 17 00:00:00 2001
From: laurence <laurence>
Date: Thu, 2 May 2013 14:23:25 +0100
Subject: [PATCH] ENH: triSurfaceSearch: findLineAll returns 1 hit if line goes
 through a surface point

---
 .../triSurfaceSearch/triSurfaceSearch.C       | 23 +++++++++++++++++++
 .../triSurfaceSearch/triSurfaceSearch.H       |  3 +++
 2 files changed, 26 insertions(+)

diff --git a/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.C b/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.C
index aad1a824eb..fbff791040 100644
--- a/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.C
+++ b/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.C
@@ -54,6 +54,29 @@ bool Foam::triSurfaceSearch::checkUniqueHit
     if (nearType == 1)
     {
         // near point
+
+        const label nearPointI = f[nearLabel];
+
+        const labelList& pointFaces =
+            surface().pointFaces()[surface().meshPointMap()[nearPointI]];
+
+        forAll(pointFaces, pI)
+        {
+            const label pointFaceI = pointFaces[pI];
+
+            if (pointFaceI != currHit.index())
+            {
+                forAll(hits, hI)
+                {
+                    const pointIndexHit& hit = hits[hI];
+
+                    if (hit.index() == pointFaceI)
+                    {
+                        return false;
+                    }
+                }
+            }
+        }
     }
     else if (nearType == 2)
     {
diff --git a/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.H b/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.H
index bdca1bca83..f4176f3cfa 100644
--- a/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.H
+++ b/src/meshTools/triSurface/triSurfaceSearch/triSurfaceSearch.H
@@ -74,6 +74,9 @@ class triSurfaceSearch
 
         //- Check whether the current hit on the surface which lies on lineVec
         //  is unique.
+        //  point : return 1 unique hit
+        //  edge  : return 1 hit if in the cone of the edge faces
+        //        : return 2 hits if outside or on the cone.
         bool checkUniqueHit
         (
             const pointIndexHit& currHit,