From 8147097df8f9bded3528deb64f7d6e1f334f0c55 Mon Sep 17 00:00:00 2001
From: nico <nico.pietroni@gmail.com>
Date: Wed, 15 May 2019 11:53:12 +1000
Subject: [PATCH] avoided computing curvature if not needed

---
 wrap/igl/smooth_field.h | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/wrap/igl/smooth_field.h b/wrap/igl/smooth_field.h
index e507ceb9..8c17e4a1 100644
--- a/wrap/igl/smooth_field.h
+++ b/wrap/igl/smooth_field.h
@@ -492,13 +492,21 @@ public:
     {
         //for the moment only cross and line field
 
-        //initialize direction by curvature if needed
-//        if ((SParam.alpha_curv>0)||
-//             (SParam.sharp_thr>0)||
-//             (SParam.curv_thr>0))
+//        //initialize direction by curvature if needed
+        if ((SParam.alpha_curv>0)||
+             (SParam.sharp_thr>0)||
+             (SParam.curv_thr>0))
+        {
+            InitByCurvature(mesh,SParam.curvRing);
+            SelectConstraints(mesh,SParam);
+        }
+        else
+        {
+            SelectConstraints(mesh,SParam);
+            vcg::tri::CrossField<MeshType>::PropagateFromSelF(mesh);
+        }
+
 
-        InitByCurvature(mesh,SParam.curvRing);
-        SelectConstraints(mesh,SParam);
         //then do the actual smooth
         SmoothDirections(mesh,SParam.Ndir,SParam.SmoothM,true,SParam.alpha_curv);
     }