diff --git a/apps/test/segmentation3d/collision_detection.h b/apps/test/segmentation3d/collision_detection.h
index 0fe55e03..60c5eb78 100644
--- a/apps/test/segmentation3d/collision_detection.h
+++ b/apps/test/segmentation3d/collision_detection.h
@@ -61,7 +61,7 @@ public:
 	bool TestRealIntersection(SimplexType *f0,SimplexType *f1)
 	{
 		
-		if ((!f0->IsActive())&&(!f1->IsActive()))
+		if (((!f0->IsActive())&&(!f1->IsActive()))||(f0->IsD())||(f1->IsD()))
 			return false;
 		//no adiacent faces
 		if ((f0!=f1)&& (!ShareEdge(f0,f1))
@@ -70,25 +70,51 @@ public:
 		return false;
 	}
 
-	///refresh the elemnt of spatial hashing table 
+	///refresh all the elements of spatial hashing table 
+	///this function must called sometimes
 	void RefreshElements()
 	{
 		HTable->Clear();
-
+		vactive.clear();///new
 		for (SimplexIterator si=_simplex.begin();si<_simplex.end();++si)
 		{
 			if ((!(*si).IsD())&&(!(*si).IsActive()))
 					HTable->addSimplex(&*si);
+			///new now
+			else
+			{
+				std::vector<Point3i> cells=HTable->addSimplex(&*si);
+				for(std::vector<Point3i>::iterator it=cells.begin();it<cells.end();it++)
+					vactive.insert(*it);
+			}
+			///end new now
 		}
 
-		UpdateStep();
+		//UpdateStep();	commented  now
 	}
 	
+	/////put active cells on apposite structure
+	//void UpdateStep()
+	//{
+	//	vactive.clear();
+	//	for (SimplexIterator si=_simplex.begin();si<_simplex.end();++si)
+	//	{
+	//		if ((((!(*si).IsD()))&&(*si).IsActive()))
+	//		{
+	//			std::vector<Point3i> cells=HTable->addSimplex(&*si);
+	//			for(std::vector<Point3i>::iterator it=cells.begin();it<cells.end();it++)
+	//				vactive.insert(*it);
+	//		}
+	//	}
+	//}
+
+
 	///put active cells on apposite structure
-	void UpdateStep()
+	template <class Container_Type>
+	void UpdateStep(Container_Type &simplex)
 	{
 		vactive.clear();
-		for (SimplexIterator si=_simplex.begin();si<_simplex.end();++si)
+		for (Container_Type::iterator si=simplex.begin();si<simplex.end();++si)
 		{
 			if ((((!(*si).IsD()))&&(*si).IsActive()))
 			{
@@ -99,6 +125,7 @@ public:
 		}
 	}
 
+
 	///control the real self intersection in the mesh and returns the elements that intersect with someone
 	std::vector<SimplexType*> computeSelfIntersection()
 	{
diff --git a/apps/test/segmentation3d/main.cpp b/apps/test/segmentation3d/main.cpp
index e10ef473..94645878 100644
--- a/apps/test/segmentation3d/main.cpp
+++ b/apps/test/segmentation3d/main.cpp
@@ -1,15 +1,17 @@
 #include <qapplication.h>
 #include <qimage.h>
 #include <segmentform.h>
-#include <segmentator.h>
+//#include <segmentator.h>
 #include <qdir.h>
 #include <qcolor.h>
 #include <SimpleGLWidget.h>
 #include <qtimer.h>
 
+
 Segmentator *s;
 QTimer *timer;
 
+
 int main( int argc, char ** argv )
 {
 	s=new Segmentator();
@@ -25,6 +27,7 @@ int main( int argc, char ** argv )
 
 	//assign pointer to pricipal form
 	w.simpleGLWidget1->w=&w;
+
 	
 	#ifdef _TORUS
 		w.simpleGLWidget1->SetExtractionParameters();
@@ -32,7 +35,8 @@ int main( int argc, char ** argv )
 		s->BBox().max=Point3f(300.f,300.f,300.f);
 		s->InitSegmentation(Point3f(0.f,100.f,0.f));
 	#endif
-
+	
+	
 	/*s=new Segmentator();*/
 
 	//s->LoadFromDir("./venacava/","prova.txt");//to chANGE
diff --git a/apps/test/segmentation3d/segmentation3d.pro b/apps/test/segmentation3d/segmentation3d.pro
index 79c3d097..6591ac66 100644
--- a/apps/test/segmentation3d/segmentation3d.pro
+++ b/apps/test/segmentation3d/segmentation3d.pro
@@ -3,7 +3,16 @@ LANGUAGE	= C++
 
 CONFIG	+= qt warn_on release
 
+win32:LIBS	+= qt-mt332.lib qtmain.lib kernel32.lib user32.lib gdi32.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib imm32.lib winmm.lib wsock32.lib winspool.lib delayimp.lib opengl32.lib glu32.lib glew32.lib
+DEFINES	+= QT_NO_DEBUG _WINDOWS UNICODE WIN32 QT_DLL QT_THREAD_SUPPORT _TORUS01 _EXTENDED_MARCH1
+win32:DEFINES	+= QT_NO_DEBUG _WINDOWS UNICODE WIN32 QT_DLL QT_THREAD_SUPPORT _TORUS01 _EXTENDED_MARCH1
+win32:INCLUDEPATH	+= "$(QTDIR)\include" . "C:\Qt\3.3.2\mkspecs\win32-msvc.net" D:\sf\apps\test\segmentation3d D:\sf
 
+SOURCES	+= D:/sf/wrap/gui/trackmode.cpp \
+	D:/sf/wrap/gui/trackball.cpp \
+	D:/sf/wrap/ply/plylib.cpp \
+	simpleglwidget.cpp \
+	main.cpp
 FORMS	= segmentform.ui
 
 
@@ -20,6 +29,154 @@ FORMS	= segmentform.ui
 
 
 
+
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 unix {
   UI_DIR = .ui
   MOC_DIR = .moc
diff --git a/apps/test/segmentation3d/segmentator.h b/apps/test/segmentation3d/segmentator.h
index 504b9820..fe370cf6 100644
--- a/apps/test/segmentation3d/segmentator.h
+++ b/apps/test/segmentation3d/segmentator.h
@@ -1,11 +1,15 @@
-#ifndef SEGMENTATOR
-#define SEGMENTATOR
+#ifndef __SEGMENTATOR
+#define __SEGMENTATOR
 
-//#include <vcg/simplex/vertex/with/afvn.h>
-//#include <vcg/simplex/face/with/afav.h>
 
-#include <vcg/simplex/vertex/with/vn.h>
-#include <vcg/simplex/face/with/af.h>
+///need vertex-face topology in case of extended marching cubes
+#ifdef _EXTENDED_MARCH
+	#include <vcg/simplex/vertex/with/afvn.h>
+	#include <vcg/simplex/face/with/afavfnfmrt.h>
+#else
+	#include <vcg/simplex/vertex/with/vn.h>
+	#include <vcg/simplex/face/with/afavfnfmrt.h>
+#endif
 
 #include <sim/particle/with/basic_physics.h>
 #include <sim/methods/mass_spring/triangle.h>
@@ -15,13 +19,26 @@
 #include <vcg/complex/trimesh/allocate.h>
 #include <vcg/complex/trimesh/update/topology.h>
 #include <vcg/complex/trimesh/update/normal.h>
+#include <vcg/complex/trimesh/update/bounding.h>
+#include <vcg/complex/trimesh/update/edges.h>
 
 #include <vcg/complex/trimesh/refine.h>
-#include <vcg/complex/trimesh/platonic.h>
+#include <vcg/complex/trimesh/create/platonic.h>
 #include <volume_dataset.h>
 
 //#include <vcg/simplex/face/pos.h>
 
+///marching cubes
+
+//#include <segmentation_wolker.h>
+#include <vcg/complex/trimesh/create/resampler.h>
+
+//#ifdef _EXTENDED_MARCH
+//	#include <vcg/complex/trimesh/create/extended_marching_cubes.h>
+//#else
+//	#include <vcg/complex/trimesh/create/marching_cubes.h>
+//#endif
+
 
 #include <vcg/space/point3.h>
 #include <vcg/space/box3.h>
@@ -34,6 +51,10 @@
 #include <collision_detection.h>
 #include <vcg/complex/trimesh/smooth.h>
 
+///debugghe
+#include <wrap/io_trimesh/export_ply.h>
+///debugghe
+
 class Segmentator{
 	
 public:
@@ -42,7 +63,11 @@ struct DummyEdge;
 struct DummyTetra;
 struct MyFace;
 
-struct MyVertex: public ParticleBasic<vcg::VertexVNf<DummyEdge,MyFace,DummyTetra> >
+#ifdef _EXTENDED_MARCH
+	struct MyVertex: public ParticleBasic<vcg::VertexAFVNf<DummyEdge,MyFace,DummyTetra> >
+#else
+	struct MyVertex: public ParticleBasic<vcg::VertexVNf<DummyEdge,MyFace,DummyTetra> >
+#endif
 {
 public:
 
@@ -55,6 +80,7 @@ public:
 		stopped=false;
 		Acc()=Point3f(0,0,0);
 		Vel()=Point3f(0,0,0);
+		ClearFlags();
 		//neeed call of the super class
 	}
 
@@ -82,7 +108,7 @@ public:
 };
 
 ///this class implements the deformable triangle in a mass spring system
-struct MyFace : public TriangleMassSpring< vcg::FaceAF<MyVertex,DummyEdge,MyFace> >
+struct MyFace : public TriangleMassSpring< vcg::FaceAFAVFNFMRT<MyVertex,DummyEdge,MyFace> >
 {
 public:
 	bool intersected;
@@ -163,11 +189,25 @@ typedef  PDEIntegrator<Part_FaceContainer,Part_VertexContainer,float> myIntegrat
 typedef	 Collision_Detector<std::vector<MyFace> > Collision;
 
 
+////typedef Walker<MyTriMesh,MyTriMesh> MyWalk;
+//
+//#ifdef _EXTENDED_MARCH
+//	typedef vcg::tri::ExtendedMarchingCubes<MyTriMesh, MyWalk> MarchingCubes;
+//#else
+//	typedef vcg::tri::MarchingCubes<MyTriMesh, MyWalk> MarchingCubes;
+//#endif
+
+
 public:
 	Point3f scale;
 	
 	//VolumetricDataset<int> d;
-	MyTriMesh m;
+	/*MyTriMesh m;
+	MyTriMesh new_m;*/
+
+	MyTriMesh *m;
+	MyTriMesh *new_m;
+
 	Part_FaceContainer P_Faces;
 	Part_VertexContainer P_Vertex;
 	Part_VertexContainer V_Stopped;
@@ -206,7 +246,29 @@ public:
 
 	Segmentator()
 	{
-		CollDet=new Collision(m.face);
+		m=new MyTriMesh();
+		CollDet=new Collision(m->face);
+		//m=NULL;
+
+		//scale=Point3f(5.f,5.f,5.f);
+		//InitialBarycenter=Point3f(20.f,20.f,20.f);
+		//InitMesh(m);
+		//vcg::tri::UpdateNormals<MyTriMesh>::PerFaceNormalized(m);
+		//vcg::tri::UpdateBounding<MyTriMesh>::Box(m);
+		//vcg::tri::UpdateEdges<MyTriMesh>::Set(m);
+		///////debugghe
+		//edge_precision=4.f;
+		////edge_precision=1.f;
+		//float rx=this->m.bbox.DimX()/edge_precision;
+		//float ry=this->m.bbox.DimY()/edge_precision;
+		//float rz=this->m.bbox.DimZ()/edge_precision;
+		//Point3i res=Point3i((int)ceil(rx),(int)ceil(ry),(int)ceil(rz));
+		//// EXTENDED MARCHING CUBES
+		//MyWalk	walker(m.bbox,res);
+		//MarchingCubes emc(new_m, walker);
+		//walker.BuildMesh<MarchingCubes>(m,new_m,emc);
+
+		//vcg::tri::io::ExporterPLY<Segmentator::MyTriMesh>::Save(new_m,"D:/lillo.ply");
 	}
 
 	~Segmentator()
@@ -384,33 +446,34 @@ private:
 ///re-set physical pararmeters on the mesh
 void InitPhysParam(float k_elanst,float mass,float k_dihedral)
 {
-	for (unsigned int i=0;i<m.face.size();i++)
+	for (unsigned int i=0;i<m->face.size();i++)
 		{
-			m.face[i].Init(k_elanst,mass,k_dihedral);
+			m->face[i].Init(k_elanst,mass,k_dihedral);
 		}
 }
 
 ///set the initial mesh of deformable object
-void InitMesh(MyTriMesh &m)
+void InitMesh(MyTriMesh *m)
 	{
-		m.Clear();
+		m->Clear();
 		
-		vcg::tri::Icosahedron<MyTriMesh>(m);
+		vcg::tri::Icosahedron<MyTriMesh>(*m);
 
-		vcg::tri::UpdateTopology<MyTriMesh>::FaceFace(m);
+		vcg::tri::UpdateTopology<MyTriMesh>::FaceFace(*m);
 		
 	/*	P_Vertex.clear();
 		P_Faces.clear();*/
 		
-		for (unsigned int i=0;i<m.vert.size();i++)
+		for (unsigned int i=0;i<m->vert.size();i++)
 		{
-			m.vert[i].P()+=InitialBarycenter;
-			m.vert[i].P()=UnScale(m.vert[i].P());
+			m->vert[i].P()=UnScale(m->vert[i].P());///last change
+			m->vert[i].P()+=InitialBarycenter;
+//			m.vert[i].P()=UnScale(m.vert[i].P());
 		//	P_Vertex.push_back(&m.vert[i]);
 		}
 		
 		
-		vcg::tri::UpdateNormals<MyTriMesh>::PerVertexNormalized(m);
+		vcg::tri::UpdateNormals<MyTriMesh>::PerVertexNormalized(*m);
 
 	}
 
@@ -490,7 +553,7 @@ void Reinit_PVectors()
     P_Vertex.clear();
 	MyTriMesh::VertexIterator vi;
 
-	for (vi=m.vert.begin();vi<m.vert.end();vi++)
+	for (vi=m->vert.begin();vi<m->vert.end();vi++)
 	{
 		if ((!vi->IsD())&&(!vi->blocked))
 			P_Vertex.push_back(&(*vi));	
@@ -500,7 +563,7 @@ void Reinit_PVectors()
 
 	P_Faces.clear();
 	MyTriMesh::FaceIterator fi;
-	for (fi=m.face.begin();fi<m.face.end();fi++)
+	for (fi=m->face.begin();fi<m->face.end();fi++)
 	{
 		//if ((!fi->IsBlocked()))
 		if ((!fi->IsD())&&(!fi->IsBlocked()))
@@ -516,7 +579,7 @@ void Refresh_PVectors()
 	P_FacesAux.clear();
 	P_VertexAux.clear();
 	
-	int i=0;
+	unsigned int i=0;
 	for (i=0;i<P_Vertex.size();i++)
 	{
 		if (!P_Vertex[i]->blocked)
@@ -539,13 +602,13 @@ void Refresh_PVectors()
 ///add the new elements on partial vectors when allocate space for new vertices
 void AddNewElements(MyTriMesh::VertexIterator vi,MyTriMesh::FaceIterator fi)
 {
-	while (vi!=m.vert.end())
+	while (vi!=m->vert.end())
 	{
 		if (!(*vi).IsD())
 			P_Vertex.push_back(&(*vi));
 		vi++;
 	}
-	while (fi!=m.face.end())
+	while (fi!=m->face.end())
 	{
 		if (!(*fi).IsD())
 			P_Faces.push_back(&(*fi));
@@ -597,24 +660,24 @@ bool TimeSelfIntersection()
 ///refine the mesh and re-update eventually 
 void RefineStep(float _edge_size)
 {
-	MyTriMesh::VertexIterator vinit=m.vert.begin();
-	MyTriMesh::FaceIterator finit=m.face.begin();
-	MyTriMesh::VertexIterator vend=m.vert.end();
-	MyTriMesh::FaceIterator fend=m.face.end();
+	MyTriMesh::VertexIterator vinit=m->vert.begin();
+	MyTriMesh::FaceIterator finit=m->face.begin();
+	MyTriMesh::VertexIterator vend=m->vert.end();
+	MyTriMesh::FaceIterator fend=m->face.end();
 
-	refined=vcg::Refine(m,MidPoint<MyTriMesh>(),_edge_size);
+	refined=vcg::Refine(*m,MidPoint<MyTriMesh>(),_edge_size);
 	
 	if (refined)
 	{
-		MyTriMesh::VertexIterator vinit2=m.vert.begin();
-		MyTriMesh::FaceIterator finit2=m.face.begin();
+		MyTriMesh::VertexIterator vinit2=m->vert.begin();
+		MyTriMesh::FaceIterator finit2=m->face.begin();
 
 		if ((vinit2!=vinit)||(finit2!=finit))
 			Reinit_PVectors();
 		else
 			AddNewElements(vend,fend);
 
-		vcg::tri::UpdateNormals<MyTriMesh>::PerVertexNormalized(m);
+		vcg::tri::UpdateNormals<MyTriMesh>::PerVertexNormalized(*m);
 		CollDet->RefreshElements();
 	}
 }
@@ -648,7 +711,8 @@ void ClearStopped()
 ///do one step of controls for self collision detetction
 void CollisionDetection()
 {
-	CollDet->UpdateStep();
+	//CollDet->UpdateStep();
+	CollDet->UpdateStep<Part_FaceContainer>(P_Faces);
 	std::vector<MyFace*> coll=CollDet->computeSelfIntersection();
 	for (std::vector<MyFace*>::iterator it=coll.begin();it<coll.end();it++)
 	{
@@ -736,7 +800,7 @@ vcg::Box3<float> BBox()
 ///one step of moving for the deformable object
 void Step(float t,float _edge_size)
 {	
-	if (m.face.size()!=0)
+	if (m->face.size()!=0)
 	{
 		AddExtForces();
 		TrINT->Step(t);
@@ -755,7 +819,7 @@ void Step(float t,float _edge_size)
 
 void Smooth()
 {
-	ScaleLaplacianSmooth<MyTriMesh>(m,1,0.5);
+	ScaleLaplacianSmooth<MyTriMesh>(*m,1,0.5);
 }
 
 void AutoStep()
@@ -763,7 +827,7 @@ void AutoStep()
 	refined=false;
 	Step(time_stamp,edge_size);
 	//test on 80% of the vertex blocked
-	if ((((float)P_Vertex.size()/(float)m.vn)<0.2)&&(end_loop)&&(!refined)&&(edge_size>edge_precision))
+	if ((((float)P_Vertex.size()/(float)m->vn)<0.2)&&(end_loop)&&(!refined)&&(edge_size>edge_precision))
 	{
 				edge_size/=2.f;
 				if (edge_size<edge_precision)
@@ -772,5 +836,21 @@ void AutoStep()
 	}
 }
 
+///first version
+void Resample()
+{
+	new_m=new MyTriMesh();
+	vcg::trimesh::Resampler<MyTriMesh,MyTriMesh>::Resample<vcg::trimesh::RES::MMarchingCubes>(*m,*new_m,
+		Point3i((int) edge_precision,(int) edge_precision,(int) edge_precision));
+
+	delete(m);
+
+	m=new_m;
+	Reinit_PVectors();
+	ReinitPhysicMesh();
+	
+	CollDet->Init(bbox.min,bbox.max,5.f);
+}
+
 };
 #endif
\ No newline at end of file
diff --git a/apps/test/segmentation3d/segmentform.ui b/apps/test/segmentation3d/segmentform.ui
index 296cb3c2..ecd06015 100644
--- a/apps/test/segmentation3d/segmentform.ui
+++ b/apps/test/segmentation3d/segmentform.ui
@@ -234,6 +234,12 @@
                     <pointsize>10</pointsize>
                 </font>
             </property>
+            <property name="frameShape">
+                <enum>LineEditPanel</enum>
+            </property>
+            <property name="frameShadow">
+                <enum>Sunken</enum>
+            </property>
             <property name="text">
                 <string>0.2</string>
             </property>
@@ -361,117 +367,6 @@
                 <string>mass of particles</string>
             </property>
         </widget>
-        <widget class="QPushButton">
-            <property name="name">
-                <cstring>ClearButton</cstring>
-            </property>
-            <property name="geometry">
-                <rect>
-                    <x>30</x>
-                    <y>700</y>
-                    <width>141</width>
-                    <height>31</height>
-                </rect>
-            </property>
-            <property name="font">
-                <font>
-                    <pointsize>10</pointsize>
-                </font>
-            </property>
-            <property name="text">
-                <string>Clear</string>
-            </property>
-        </widget>
-        <widget class="QPushButton">
-            <property name="name">
-                <cstring>SaveButton</cstring>
-            </property>
-            <property name="geometry">
-                <rect>
-                    <x>30</x>
-                    <y>660</y>
-                    <width>140</width>
-                    <height>31</height>
-                </rect>
-            </property>
-            <property name="font">
-                <font>
-                    <pointsize>10</pointsize>
-                </font>
-            </property>
-            <property name="text">
-                <string>SavePly</string>
-            </property>
-        </widget>
-        <widget class="QPushButton">
-            <property name="name">
-                <cstring>SmoothButton</cstring>
-            </property>
-            <property name="geometry">
-                <rect>
-                    <x>30</x>
-                    <y>620</y>
-                    <width>140</width>
-                    <height>30</height>
-                </rect>
-            </property>
-            <property name="font">
-                <font>
-                    <pointsize>10</pointsize>
-                </font>
-            </property>
-            <property name="cursor">
-                <cursor>1</cursor>
-            </property>
-            <property name="text">
-                <string>Smooth</string>
-            </property>
-        </widget>
-        <widget class="QPushButton">
-            <property name="name">
-                <cstring>SegmentButton</cstring>
-            </property>
-            <property name="geometry">
-                <rect>
-                    <x>30</x>
-                    <y>580</y>
-                    <width>141</width>
-                    <height>31</height>
-                </rect>
-            </property>
-            <property name="font">
-                <font>
-                    <pointsize>10</pointsize>
-                </font>
-            </property>
-            <property name="text">
-                <string>Extract</string>
-            </property>
-            <property name="toggleButton">
-                <bool>true</bool>
-            </property>
-        </widget>
-        <widget class="QPushButton">
-            <property name="name">
-                <cstring>ApplyButton</cstring>
-            </property>
-            <property name="geometry">
-                <rect>
-                    <x>30</x>
-                    <y>540</y>
-                    <width>141</width>
-                    <height>31</height>
-                </rect>
-            </property>
-            <property name="font">
-                <font>
-                    <pointsize>10</pointsize>
-                </font>
-            </property>
-            <property name="text">
-                <string>Apply</string>
-            </property>
-        </widget>
         <widget class="QLabel">
             <property name="name">
                 <cstring>textLabel1_2_2_2_3</cstring>
@@ -691,6 +586,141 @@
                 <number>3</number>
             </property>
         </widget>
+        <widget class="QPushButton">
+            <property name="name">
+                <cstring>SmoothButton</cstring>
+            </property>
+            <property name="geometry">
+                <rect>
+                    <x>30</x>
+                    <y>660</y>
+                    <width>140</width>
+                    <height>30</height>
+                </rect>
+            </property>
+            <property name="font">
+                <font>
+                    <pointsize>10</pointsize>
+                </font>
+            </property>
+            <property name="cursor">
+                <cursor>0</cursor>
+            </property>
+            <property name="text">
+                <string>Smooth</string>
+            </property>
+        </widget>
+        <widget class="QPushButton">
+            <property name="name">
+                <cstring>SaveButton</cstring>
+            </property>
+            <property name="geometry">
+                <rect>
+                    <x>30</x>
+                    <y>700</y>
+                    <width>140</width>
+                    <height>31</height>
+                </rect>
+            </property>
+            <property name="font">
+                <font>
+                    <pointsize>10</pointsize>
+                </font>
+            </property>
+            <property name="text">
+                <string>SavePly</string>
+            </property>
+        </widget>
+        <widget class="QPushButton">
+            <property name="name">
+                <cstring>SegmentButton</cstring>
+            </property>
+            <property name="geometry">
+                <rect>
+                    <x>30</x>
+                    <y>580</y>
+                    <width>141</width>
+                    <height>31</height>
+                </rect>
+            </property>
+            <property name="font">
+                <font>
+                    <pointsize>10</pointsize>
+                </font>
+            </property>
+            <property name="text">
+                <string>Extract</string>
+            </property>
+            <property name="toggleButton">
+                <bool>true</bool>
+            </property>
+        </widget>
+        <widget class="QPushButton">
+            <property name="name">
+                <cstring>ClearButton</cstring>
+            </property>
+            <property name="geometry">
+                <rect>
+                    <x>30</x>
+                    <y>740</y>
+                    <width>140</width>
+                    <height>30</height>
+                </rect>
+            </property>
+            <property name="font">
+                <font>
+                    <pointsize>10</pointsize>
+                </font>
+            </property>
+            <property name="cursor">
+                <cursor>0</cursor>
+            </property>
+            <property name="text">
+                <string>ClearMesh</string>
+            </property>
+        </widget>
+        <widget class="QPushButton">
+            <property name="name">
+                <cstring>Marching_Cubes</cstring>
+            </property>
+            <property name="geometry">
+                <rect>
+                    <x>30</x>
+                    <y>619</y>
+                    <width>141</width>
+                    <height>31</height>
+                </rect>
+            </property>
+            <property name="font">
+                <font>
+                    <pointsize>10</pointsize>
+                </font>
+            </property>
+            <property name="text">
+                <string>Marching Cube</string>
+            </property>
+        </widget>
+        <widget class="QPushButton">
+            <property name="name">
+                <cstring>ApplyButton</cstring>
+            </property>
+            <property name="geometry">
+                <rect>
+                    <x>30</x>
+                    <y>540</y>
+                    <width>141</width>
+                    <height>31</height>
+                </rect>
+            </property>
+            <property name="font">
+                <font>
+                    <pointsize>10</pointsize>
+                </font>
+            </property>
+            <property name="text">
+                <string>Apply</string>
+            </property>
+        </widget>
     </widget>
     <widget class="SimpleGLWidget">
         <property name="name">
@@ -746,9 +776,9 @@
         <slot access="public" specifier="">SavePly()</slot>
         <slot access="public" specifier="">Extract()</slot>
         <slot access="public" specifier="">Apply()</slot>
-        <slot access="public" specifier="">Clear()</slot>
-        <slot access="public" specifier="">slot()</slot>
         <slot access="public" specifier="">Open()</slot>
+        <slot access="public" specifier="">CleanMesh()</slot>
+        <slot access="public" specifier="">Clear()</slot>
     </customwidget>
 </customwidgets>
 <actions>
@@ -895,12 +925,6 @@
         <receiver>simpleGLWidget1</receiver>
         <slot>Apply()</slot>
     </connection>
-    <connection>
-        <sender>ClearButton</sender>
-        <signal>pressed()</signal>
-        <receiver>simpleGLWidget1</receiver>
-        <slot>Clear()</slot>
-    </connection>
     <connection>
         <sender>fileOpenAction</sender>
         <signal>activated()</signal>
@@ -913,7 +937,22 @@
         <receiver>simpleGLWidget1</receiver>
         <slot>SavePly()</slot>
     </connection>
+    <connection>
+        <sender>Marching_Cubes</sender>
+        <signal>pressed()</signal>
+        <receiver>simpleGLWidget1</receiver>
+        <slot>CleanMesh()</slot>
+    </connection>
+    <connection>
+        <sender>ClearButton</sender>
+        <signal>pressed()</signal>
+        <receiver>simpleGLWidget1</receiver>
+        <slot>Clear()</slot>
+    </connection>
 </connections>
+<includes>
+    <include location="local" impldecl="in declaration">simpleglwidget.h</include>
+</includes>
 <pixmapinproject/>
 <layoutdefaults spacing="6" margin="11"/>
 <includehints>
diff --git a/apps/test/segmentation3d/simpleglwidget.cpp b/apps/test/segmentation3d/simpleglwidget.cpp
index 09a17e54..34df73db 100644
--- a/apps/test/segmentation3d/simpleglwidget.cpp
+++ b/apps/test/segmentation3d/simpleglwidget.cpp
@@ -20,11 +20,22 @@ QGLWidget(parent, name)
 	resultForces=false;
 	continue_int=false;
 	_numslide=0;
-	Track.center=Point3f(0,0,0);
-	Track.Reset();
-	Track.radius= 100;
+
+	TrackM.center=Point3f(0,0,0);
+	TrackM.Reset();
+	TrackM.radius= 100.f;
+
+	TrackS.center=Point3f(0,0,0);
+	TrackS.Reset();
+	TrackS.radius= 100.f;
+	
 	zoom=1;
 	path="";
+	/*s=new Segmentator();*/
+	//timer = new QTimer(this );
+	//QTimer::connect( timer, SIGNAL(timeout()), this, SLOT(Update()) );
+ //   timer->start(0); // 2 seconds single-shot timer
+	
 }
 
 void SimpleGLWidget::SaveMatrix()
@@ -185,7 +196,7 @@ void SimpleGLWidget::Save()
 	if (filename!=NULL)
 	{
 		const char *path_save=filename.ascii();
-		vcg::tri::io::ExporterPLY<Segmentator::MyTriMesh>::Save(s->m,path_save);	
+		vcg::tri::io::ExporterPLY<Segmentator::MyTriMesh>::Save((*s->m),path_save);	
 	}
 	
 }
@@ -267,27 +278,29 @@ void SimpleGLWidget::glDraw(){
 		if (_showslides)
 		{
 			vcg::Point3f p=Point3f((float)s->BBox().Center().V(0),(float)s->BBox().Center().V(1),(float)s->BBox().Center().V(2));
-			Track.radius=s->BBox().Diag();
-			Track.GetView();
-			Track.Apply();
-			Track.Draw();
+			TrackS.radius=s->BBox().Diag();
+			TrackS.GetView();
+			TrackS.Apply();
+			TrackS.Draw();
 			glScalef(1.f/s->BBox().Diag(),1.f/s->BBox().Diag(),1.f/s->BBox().Diag());
-			glScalef(GLfloat(zoom),GLfloat(zoom),GLfloat(zoom));
+			//glScalef(GLfloat(zoom),GLfloat(zoom),GLfloat(zoom));
 			glTranslate(-p);
 			//save transformation matrixes
 			SaveMatrix();
 		}
 		else
 		{
-			vcg::tri::UpdateBounding<Segmentator::MyTriMesh>::Box(s->m);
-			vcg::Point3f p=s->m.bbox.Center();
-			Track.radius=s->m.bbox.Diag();
-			Track.GetView();
-			Track.Apply();
-			Track.Draw();
-			glScalef(1/s->m.bbox.Diag(),1/s->m.bbox.Diag(),1/s->m.bbox.Diag());
-			glScalef(GLfloat(zoom),GLfloat(zoom),GLfloat(zoom));
-			glTranslate(-p);
+			if (s->m!=NULL)
+			{
+				//vcg::tri::UpdateBounding<Segmentator::MyTriMesh>::Box(*(s->m));
+				vcg::Point3f p=s->m->bbox.Center();
+				TrackM.GetView();
+				TrackM.Apply();
+				TrackM.Draw();
+				glScalef(1.f/s->m->bbox.Diag(),1.f/s->m->bbox.Diag(),1.f/s->m->bbox.Diag());
+				glTranslate(-p);
+				//glScalef(1.f/s->m->bbox.Diag(),1.f/s->m->bbox.Diag(),1.f/s->m->bbox.Diag());
+			}
 		}
 		
 		glEnable(GL_NORMALIZE);
@@ -324,9 +337,11 @@ void SimpleGLWidget::glDraw(){
 			glPolygonMode(GL_FRONT,GL_FILL);
 
 		int i=0;
-		glBegin(GL_TRIANGLES);
-		for (fi=s->m.face.begin();fi<s->m.face.end();fi++)
+		if (s->m!=NULL)
 		{
+			glBegin(GL_TRIANGLES);
+			for (fi=s->m->face.begin();fi<s->m->face.end();fi++)
+			{
 				glColor3d(0.4,0.8,0.8);
 			if (fi->intersected)
 				glColor3d(1.f,0,0);
@@ -343,7 +358,7 @@ void SimpleGLWidget::glDraw(){
 			}
 		}
 		glEnd();
-	
+		}
 		glPopMatrix();
 		//WriteInfo();
 		
@@ -390,15 +405,32 @@ void SimpleGLWidget::resizeGL( int w, int h )
 
 void SimpleGLWidget::ClearMesh()
 {
-	s->m.Clear();	
+	s->m->Clear();	
 	repaint();
 }
 
+void SimpleGLWidget::UpdateBBMesh()
+{
+	vcg::tri::UpdateBounding<Segmentator::MyTriMesh>::Box(*(s->m));
+}
 
 void SimpleGLWidget::mousePressEvent ( QMouseEvent * e )
 {
 	if (e->button()==Qt::LeftButton )
-		Track.MouseDown(e->x(),_H-e->y(),vcg::Trackball::BUTTON_LEFT);
+	{
+
+		if ((!_showslides)&&(s->m!=NULL))
+		{
+			/*vcg::tri::UpdateBounding<Segmentator::MyTriMesh>::Box(*(s->m));
+			TrackM.radius=s->m->bbox.Diag();
+			TrackM.center=s->m->bbox.Center();
+			*/
+			UpdateBBMesh();
+			TrackM.MouseDown(e->x(),_H-e->y(),vcg::Trackball::BUTTON_LEFT);
+		}
+		else if (_showslides)
+			TrackS.MouseDown(e->x(),_H-e->y(),vcg::Trackball::BUTTON_LEFT);
+	}
 	else
 	//test mass spring model
 	if ((e->button()==Qt::RightButton)&&(_showslides))
@@ -417,6 +449,8 @@ void SimpleGLWidget::mousePressEvent ( QMouseEvent * e )
 		//s->SetInitialBarycenter(Point3f(x,y,_numslide));
 		//s->InitSegmentation(Point3f(x,y,_numslide));
 		s->InitSegmentation(Point3f(x,y,z));
+		UpdateBBMesh();
+		//vcg::tri::UpdateBounding<Segmentator::MyTriMesh>::Box(*(s->m));
 		repaint();
 	}
 	//vcg::tri::UpdateBounding<Segmentator::MyTriMesh>::Box(s->m);
@@ -426,7 +460,9 @@ void SimpleGLWidget::wheelEvent(QWheelEvent *e)
 {
 	if (!_showslides)
 	{
-		zoom+=e->delta()/120.f;
+	/*	zoom+=e->delta()/120.f;
+		repaint();*/
+		TrackM.MouseWheel(e->delta()/120.f);
 		repaint();
 	}
 	else
@@ -446,7 +482,11 @@ void SimpleGLWidget::wheelEvent(QWheelEvent *e)
 
 void SimpleGLWidget::mouseReleaseEvent(QMouseEvent * e )
   {
-	  Track.MouseUp(e->x(),_H-e->y(),vcg::Trackball::BUTTON_LEFT);
+	  if (!_showslides)
+		TrackM.MouseUp(e->x(),_H-e->y(),vcg::Trackball::BUTTON_LEFT);
+	  else
+		TrackS.MouseUp(e->x(),_H-e->y(),vcg::Trackball::BUTTON_LEFT);
+
 	  repaint();
   }
 
@@ -459,6 +499,15 @@ void SimpleGLWidget::Step()
 			}
 	}
 
+void SimpleGLWidget::MarchingCube()
+{
+	if (s->m->fn>0)
+		s->Resample();
+
+	//vcg::tri::io::ExporterPLY<Segmentator::MyTriMesh>::Save((*s->new_m),"d:/march.ply");	
+	//vcg::tri::io::ExporterPLY<Segmentator::MyTriMesh>::Save((*s->m),"d:/march.ply");	
+}
+
 void SimpleGLWidget::SetExtractionParameters()
 	{
 		float mass=atof(w->M_particles->text());
@@ -476,7 +525,11 @@ void SimpleGLWidget::SetExtractionParameters()
 
 void SimpleGLWidget::mouseMoveEvent ( QMouseEvent * e )
 	{
-		Track.MouseMove(e->x(),_H-e->y());
+		if (_showslides)
+			TrackS.MouseMove(e->x(),_H-e->y());
+		else
+			TrackM.MouseMove(e->x(),_H-e->y());
+
 		repaint();
 	}
 
diff --git a/apps/test/segmentation3d/simpleglwidget.h b/apps/test/segmentation3d/simpleglwidget.h
index 09b2a156..f3ace1dc 100644
--- a/apps/test/segmentation3d/simpleglwidget.h
+++ b/apps/test/segmentation3d/simpleglwidget.h
@@ -1,14 +1,14 @@
-#include <GL\glew.h>
+#include <GL/glew.h>
 #include <qgl.h>
-#include <wrap\gl\trimesh.h>
-#include <wrap\gui\trackball.h>
+#include <wrap/gl/trimesh.h>
+#include <wrap/gui/trackball.h>
 #include <segmentator.h>
 #include <sim/tri_pde_integrator.h>
 #include <vcg/complex/trimesh/update/bounding.h>
-#include <vcg/complex/trimesh/update/bounding.h>
 #include <wrap/io_trimesh/export_ply.h>
 #include <segmentform.h>
 #include <qpushbutton.h>
+#include <qtimer.h>
 
 class SimpleGLWidget: public QGLWidget{
 
@@ -17,7 +17,8 @@ Q_OBJECT
 private :
 	int _H;
 	int _W;
-	vcg::Trackball Track;
+	vcg::Trackball TrackM;
+	vcg::Trackball TrackS;
 	double zoom;
 	GLdouble projection[16];
 	GLdouble modelMatrix[16];
@@ -31,7 +32,8 @@ private :
 	bool resultForces;
 	bool continue_int;
 	GLuint texName;
-	
+	//Segmentator *s;
+	//QTimer *timer;
 	//vcg::GlTrimesh<Segmentator::MyTriMesh> *Wrap;
 	
 public:
@@ -59,7 +61,8 @@ public:
 	void WriteInfo();
 	void ClearMesh();
 	void OpenDirectory();
-
+	void MarchingCube();
+	void UpdateBBMesh();
 	
 	//virtual void keyPressEvent(QKeyEvent *qk);
 
@@ -73,6 +76,7 @@ public:
 	void ShowSlides()
 	{
 		_showslides=!_showslides;
+		UpdateBBMesh();
 		repaint();
 	}
 
@@ -124,17 +128,21 @@ public:
 
 	void Extract()
 	{
+		UpdateBBMesh();
 		continue_int=!continue_int;
 		if (continue_int)
 		{
 			_showslides=false;
 			w->SlidesButton->setOn(false);
+			//((SegmentForm *)this->parent())->SlidesButton->setOn(false);
 		}
 		else
 		{
 			_showslides=true;
 			w->SlidesButton->setOn(true);
+			//((SegmentForm *)this->parent())->SlidesButton->setOn(true);
 		}
+		repaint();
 	}
 
 	void Update()
@@ -142,8 +150,18 @@ public:
 		Step();
 	}
 	
+
 	void Clear()
 	{
 		ClearMesh();
+		repaint();
 	}
+
+	void CleanMesh()
+	{
+		MarchingCube();
+		UpdateBBMesh();
+		repaint();
+	}
+
 };
\ No newline at end of file