From e807f54280f5735888bb871bbd7536fb90f2312f Mon Sep 17 00:00:00 2001
From: nico <nico.pietroni@gmail.com>
Date: Mon, 26 Oct 2020 16:28:10 +0100
Subject: [PATCH] added IsD per face check on Computing Normal Function

---
 vcg/complex/algorithms/polygonal_algorithms.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vcg/complex/algorithms/polygonal_algorithms.h b/vcg/complex/algorithms/polygonal_algorithms.h
index bda99570..99805895 100644
--- a/vcg/complex/algorithms/polygonal_algorithms.h
+++ b/vcg/complex/algorithms/polygonal_algorithms.h
@@ -416,6 +416,7 @@ public:
     static void UpdateFaceNormals(PolyMeshType &poly_m)
     {
         for (size_t i=0;i<poly_m.face.size();i++)
+            if (!poly_m.face[i].IsD())
             UpdateNormal(poly_m.face[i]);
     }
 
@@ -424,6 +425,7 @@ public:
     static void UpdateFaceNormalByFitting(PolyMeshType &poly_m)
     {
         for (size_t i=0;i<poly_m.face.size();i++)
+            if (!poly_m.face[i].IsD())
             UpdateNormalByFitting(poly_m.face[i]);
     }