diff --git a/src/needle.cpp b/src/needle.cpp
index 31c0819561bb2849aefd2890fbf6854d40cb987d..c9c3eb877f88ec2746cc129b8e2a50b30a29f761 100644
--- a/src/needle.cpp
+++ b/src/needle.cpp
@@ -240,10 +240,10 @@ void Needle::refine()
     REAL rayon = sim_->envMap_.volumeMaxdistance(volume) ;
     if(rayon > sim_->envMap_.maxCellRay )
     {
-//        if(sim_->envMap_.subdivideVolume(volume))
-//        {
+        if(sim_->envMap_.subdivideVolume(volume))
+        {
 //            refine();
-//        }
+        }
     }
 
 #endif
diff --git a/src/simulator.cpp b/src/simulator.cpp
index 1957af9cc144abe667d8a90e5cfa850bb304179c..89b47b3683872b0f247bf33a845b393026a89e56 100644
--- a/src/simulator.cpp
+++ b/src/simulator.cpp
@@ -26,7 +26,7 @@ void Simulator::init(int argc, char **argv)
     else
         Needle_or_knife=true;
 
-     initFixedObjects();
+//     initFixedObjects();
      initSurfaces();
      initMovingObject();
 
@@ -42,7 +42,7 @@ void Simulator::doStep()
 void Simulator::initSurfaces()
 {
 
-    Surface * obj = new Surface(this,VEC3(-1.0f,-1.5f,0.0f));
+    Surface * obj = new Surface(this,VEC3(-1.0f,-1.5f,0.69f));
     CGoGNout<<"surface initialisée : "<<obj->index_surface<<CGoGNendl;
 
 }
@@ -121,8 +121,8 @@ void Simulator::initMovingObject()
     {
         std::pair<VEC3, Dart> startingPoint ;
         Dart d=envMap_.map.indexDart(0);
-        startingPoint.first=Algo::Surface::Geometry::volumeCentroid<PFP,VertexAttribute<VEC3,MAP>>(envMap_.map,d,envMap_.position);
-//        startingPoint.first=VEC3(-2.5f,-2.5f,2.5f);
+//        startingPoint.first=Algo::Surface::Geometry::volumeCentroid<PFP,VertexAttribute<VEC3,MAP>>(envMap_.map,d,envMap_.position);
+        startingPoint.first=VEC3(-5,0,0);
         startingPoint.second=d;
         aiguille=new Needle(this,startingPoint);
     }