diff --git a/vcg/complex/algorithms/create/mc_trivial_walker.h b/vcg/complex/algorithms/create/mc_trivial_walker.h
index 71faed5f..049eb4e7 100644
--- a/vcg/complex/algorithms/create/mc_trivial_walker.h
+++ b/vcg/complex/algorithms/create/mc_trivial_walker.h
@@ -33,70 +33,77 @@ class SimpleVolume : public BasicGrid<float>
 {
 public:
   typedef VOX_TYPE VoxelType;
-  std::vector<VoxelType> Vol;
-
-//  Point3i siz;   /// Dimensioni griglia come numero di celle per lato
 
   const Point3i &ISize() {return siz;}   /// Dimensioni griglia come numero di celle per lato
 
+  float Val(const int &x,const int &y,const int &z) const {
+    return cV(x,y,z).V();
+    //else return numeric_limits<float>::quiet_NaN( );
+  }
+
+  float &Val(const int &x,const int &y,const int &z) {
+    return V(x,y,z).V();
+    //else return numeric_limits<float>::quiet_NaN( );
+  }
+
+  VOX_TYPE &V(const int &x,const int &y,const int &z) {
+    return Vol[x+y*siz[0]+z*siz[0]*siz[1]];
+  }
+
+  VOX_TYPE &V(const Point3i &pi) {
+    return Vol[ pi[0] + pi[1]*siz[0] + pi[2]*siz[0]*siz[1] ];
+  }
+
+  const VOX_TYPE &cV(const int &x,const int &y,const int &z) const {
+    return Vol[x+y*siz[0]+z*siz[0]*siz[1]];
+  }
+
+
+  template < class VertexPointerType >
+  void GetXIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
+  { GetIntercept<VertexPointerType,XAxis>(p1,p2,v,thr); }
+
+  template < class VertexPointerType >
+  void GetYIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
+  { GetIntercept<VertexPointerType,YAxis>(p1,p2,v,thr); }
+
+  template < class VertexPointerType >
+  void GetZIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
+  { GetIntercept<VertexPointerType,ZAxis>(p1,p2,v,thr); }
+
+  /// The following members/methods are just for this particular case.
+  /// The above one are the one required by the marching cube interface.
+
+  std::vector<VoxelType> Vol;
+
+  typedef enum { XAxis=0,YAxis=1,ZAxis=2} VolumeAxis;
+
+  template < class VertexPointerType,  VolumeAxis AxisVal >
+  void GetIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
+  {
+    float f1 = V(p1).V()-thr;
+    float f2 = V(p2).V()-thr;
+    float u = (float) f1/(f1-f2);
+    if(AxisVal==XAxis) v->P().X() = (float) p1.X()*(1-u) + u*p2.X();
+    else v->P().X() = (float) p1.X();
+    if(AxisVal==YAxis) v->P().Y() = (float) p1.Y()*(1-u) + u*p2.Y();
+    else v->P().Y() = (float) p1.Y();
+    if(AxisVal==ZAxis) v->P().Z() = (float) p1.Z()*(1-u) + u*p2.Z();
+    else v->P().Z() = (float) p1.Z();
+    this->IPfToPf(v->P(),v->P());
+    if(VoxelType::HasNormal()) v->N() = V(p1).N()*(1-u) + V(p2).N()*u;
+  }
+
+
+
   void Init(Point3i _sz)
   {
     siz=_sz;
     Vol.resize(siz[0]*siz[1]*siz[2]);
   }
 
-  float Val(const int &x,const int &y,const int &z) const {
-      return cV(x,y,z).V();
-    //else return numeric_limits<float>::quiet_NaN( );
-  }
-
-  float &Val(const int &x,const int &y,const int &z) {
-      return V(x,y,z).V();
-    //else return numeric_limits<float>::quiet_NaN( );
-  }
-
-    VOX_TYPE &V(const int &x,const int &y,const int &z) {
-        return Vol[x+y*siz[0]+z*siz[0]*siz[1]];
-    }
-
-    VOX_TYPE &V(const Point3i &pi) {
-        return Vol[ pi[0] + pi[1]*siz[0] + pi[2]*siz[0]*siz[1] ];
-    }
-
-    const VOX_TYPE &cV(const int &x,const int &y,const int &z) const {
-        return Vol[x+y*siz[0]+z*siz[0]*siz[1]];
-    }
 
 
-    typedef enum { XAxis=0,YAxis=1,ZAxis=2} VolumeAxis;
-
-    template < class VertexPointerType,  VolumeAxis AxisVal >
-    void GetIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
-    {
-      float f1 = V(p1).V()-thr;
-      float f2 = V(p2).V()-thr;
-      float u = (float) f1/(f1-f2);
-      if(AxisVal==XAxis) v->P().X() = (float) p1.X()*(1-u) + u*p2.X();
-                    else v->P().X() = (float) p1.X();
-      if(AxisVal==YAxis) v->P().Y() = (float) p1.Y()*(1-u) + u*p2.Y();
-                    else v->P().Y() = (float) p1.Y();
-      if(AxisVal==ZAxis) v->P().Z() = (float) p1.Z()*(1-u) + u*p2.Z();
-                    else v->P().Z() = (float) p1.Z();
-      this->IPfToPf(v->P(),v->P());
-      if(VoxelType::HasNormal()) v->N() = V(p1).N()*(1-u) + V(p2).N()*u;
-    }
-
-template < class VertexPointerType >
-  void GetXIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
-{ GetIntercept<VertexPointerType,XAxis>(p1,p2,v,thr); }
-
-template < class VertexPointerType >
-  void GetYIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
-{ GetIntercept<VertexPointerType,YAxis>(p1,p2,v,thr); }
-
-template < class VertexPointerType >
-  void GetZIntercept(const vcg::Point3i &p1, const vcg::Point3i &p2, VertexPointerType &v, const float thr)
-{ GetIntercept<VertexPointerType,ZAxis>(p1,p2,v,thr); }
 };
 
 class SimpleVoxel