From b9596765341d69910dd97f73c47598696323495e Mon Sep 17 00:00:00 2001
From: Joachim Schoeberl <joachim.schoeberl@tuwien.ac.at>
Date: Wed, 21 Feb 2024 15:14:33 +0100
Subject: [PATCH] check for infinite shape

---
 libsrc/occ/occgenmesh.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/libsrc/occ/occgenmesh.cpp b/libsrc/occ/occgenmesh.cpp
index 7eb2d77d..1e373ca5 100644
--- a/libsrc/occ/occgenmesh.cpp
+++ b/libsrc/occ/occgenmesh.cpp
@@ -669,9 +669,15 @@ namespace netgen
                 BRepMesh_IncrementalMesh (geom.shape, 0.01, true);
                 triangulation = BRep_Tool::Triangulation (face, loc);
               }
+            
             if(triangulation.IsNull())
-              throw Exception("OCC-Triangulation could not be built. Do you have a bounded shape?");
-
+              {
+                if (geom.shape.Infinite())
+                  throw Exception("Cannot generate mesh for an infinite geometry");
+                else
+                  throw Exception("OCC-Triangulation could not be built");
+              }
+            
             BRepAdaptor_Surface sf(face, Standard_True);
             // one prop for evaluating and one for derivatives
             BRepLProp_SLProps prop(sf, 0, 1e-5);