diff --git a/apps/sample/sample.pro b/apps/sample/sample.pro
index 07e6859b..aa4802fd 100644
--- a/apps/sample/sample.pro
+++ b/apps/sample/sample.pro
@@ -15,6 +15,7 @@ SUBDIRS       = trimesh_base  \
                 trimesh_intersection \
                 trimesh_ball_pivoting \
                 trimesh_hole \
+                trimesh_sampling \
                 polygonmesh_base \
                 aabb_binary_tree \
                 trimesh_attribute
diff --git a/apps/sample/trimesh_inertia/trimesh_inertia.cpp b/apps/sample/trimesh_inertia/trimesh_inertia.cpp
new file mode 100644
index 00000000..d1527a54
--- /dev/null
+++ b/apps/sample/trimesh_inertia/trimesh_inertia.cpp
@@ -0,0 +1,75 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2012                                           \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+#include<vcg/complex/complex.h>
+
+#include<wrap/io_trimesh/import_off.h>
+
+#include<vcg/complex/algorithms/inertia.h>
+#include<vcg/complex/algorithms/create/platonic.h>
+
+using namespace vcg;
+using namespace std;
+
+class MyEdge;
+class MyFace;
+class MyVertex;
+struct MyUsedTypes : public UsedTypes<	Use<MyVertex>   ::AsVertexType,
+                                        Use<MyEdge>     ::AsEdgeType,
+                                        Use<MyFace>     ::AsFaceType>{};
+
+class MyVertex  : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags  >{};
+class MyFace    : public Face< MyUsedTypes, face::FFAdj, face::Normal3f, face::VertexRef, face::BitFlags > {};
+class MyEdge    : public Edge<MyUsedTypes>{};
+class MyMesh    : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge>  > {};
+
+int main( int argc, char **argv )
+{
+  MyMesh tet,oct,hex,dod,ico;
+
+  tri::Hexahedron(hex);
+  tri::Tetrahedron(tet);
+  tri::Octahedron(oct);
+  tri::Dodecahedron(dod);
+  tri::Icosahedron(ico);
+  Matrix44f ScaleM,TransM;
+  ScaleM.SetScale(1,2,1);
+  TransM.SetTranslate(1,1,1);
+//  tri::UpdatePosition<MyMesh>::Matrix(hex,ScaleM);
+  tri::UpdatePosition<MyMesh>::Matrix(hex,TransM);
+
+  tri::Inertia<MyMesh> I;
+  I.Compute(hex);
+  Point3f cc = I.CenterOfMass();
+  printf("Mass %f \n",I.Mass());
+  printf("CenterOfMass %f %f %f\n",cc[0],cc[1],cc[2]);
+  Matrix33f IT;
+  Point3f ITv;
+  I.InertiaTensorEigen(IT,ITv);
+  printf("InertiaTensor  %f %f %f\n\n",ITv[0],ITv[1],ITv[2]);
+
+  printf("InertiaTensor  %f %f %f\n",IT[0][0],IT[0][1],IT[0][2]);
+  printf("InertiaTensor  %f %f %f\n",IT[1][0],IT[1][1],IT[1][2]);
+  printf("InertiaTensor  %f %f %f\n",IT[2][0],IT[2][1],IT[2][2]);
+
+  return 0;
+}
diff --git a/apps/sample/trimesh_inertia/trimesh_inertia.pro b/apps/sample/trimesh_inertia/trimesh_inertia.pro
new file mode 100644
index 00000000..61382570
--- /dev/null
+++ b/apps/sample/trimesh_inertia/trimesh_inertia.pro
@@ -0,0 +1,3 @@
+include(../common.pri)
+TARGET = trimesh_inertia
+SOURCES += trimesh_inertia.cpp
diff --git a/apps/sample/trimesh_normal/trimesh_normal.cpp b/apps/sample/trimesh_normal/trimesh_normal.cpp
new file mode 100644
index 00000000..f7485e7e
--- /dev/null
+++ b/apps/sample/trimesh_normal/trimesh_normal.cpp
@@ -0,0 +1,79 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2012                                           \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+#include<vcg/complex/complex.h>
+
+#include<wrap/io_trimesh/import_off.h>
+
+#include<vcg/complex/algorithms/update/curvature.h>
+#include<vcg/complex/algorithms/update/normal.h>
+
+using namespace vcg;
+using namespace std;
+
+class MyEdge;
+class MyFace;
+class MyVertex;
+struct MyUsedTypes : public UsedTypes<	Use<MyVertex>   ::AsVertexType,
+                                        Use<MyEdge>     ::AsEdgeType,
+                                        Use<MyFace>     ::AsFaceType>{};
+
+class MyVertex  : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags  >{};
+class MyFace    : public Face< MyUsedTypes, face::FFAdj,  face::VertexRef, face::BitFlags > {};
+class MyEdge    : public Edge<MyUsedTypes>{};
+class MyMesh    : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge>  > {};
+
+int main( int argc, char **argv )
+{
+  if(argc<2)
+  {
+    printf("Usage trimesh_base <meshfilename.obj>\n");
+    return -1;
+  }
+
+  MyMesh m;
+
+  if(tri::io::ImporterOFF<MyMesh>::Open(m,argv[1])!=0)
+  {
+    printf("Error reading file  %s\n",argv[1]);
+    exit(0);
+  }
+
+  Matrix44f m44 = Matrix44f::Identity();
+
+  tri::UpdateNormal<MyMesh>::PerVertexClear(m);
+  tri::UpdateNormal<MyMesh>::PerVertex(m);
+  tri::UpdateNormal<MyMesh>::PerVertexAngleWeighted(m);
+  tri::UpdateNormal<MyMesh>::PerVertexNelsonMaxWeighted(m);
+  tri::UpdateNormal<MyMesh>::PerFace(m);
+  tri::UpdateNormal<MyMesh>::PerVertexFromCurrentFaceNormal(m);
+  tri::UpdateNormal<MyMesh>::PerFaceFromCurrentVertexNormal(m);
+  tri::UpdateNormal<MyMesh>::NormalizePerVertex(m);
+  tri::UpdateNormal<MyMesh>::NormalizePerFace(m);
+  tri::UpdateNormal<MyMesh>::NormalizePerFaceByArea(m);
+  tri::UpdateNormal<MyMesh>::PerBitQuadFaceNormalized(m);
+  tri::UpdateNormal<MyMesh>::PerVertexMatrix(m,m44);
+  tri::UpdateNormal<MyMesh>::PerFaceMatrix(m,m44);
+  tri::UpdateNormal<MyMesh>::PerWedgeCrease(m, math::ToRad(45.0f));
+
+  return 0;
+}
diff --git a/apps/sample/trimesh_normal/trimesh_normal.pro b/apps/sample/trimesh_normal/trimesh_normal.pro
new file mode 100644
index 00000000..977523a0
--- /dev/null
+++ b/apps/sample/trimesh_normal/trimesh_normal.pro
@@ -0,0 +1,3 @@
+include(../common.pri)
+TARGET = trimesh_normal
+SOURCES += trimesh_normal.cpp
diff --git a/apps/sample/trimesh_sampling/trimesh_sampling.cpp b/apps/sample/trimesh_sampling/trimesh_sampling.cpp
new file mode 100644
index 00000000..8df5c2fb
--- /dev/null
+++ b/apps/sample/trimesh_sampling/trimesh_sampling.cpp
@@ -0,0 +1,64 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2012                                           \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+#include<vcg/complex/complex.h>
+
+#include<wrap/io_trimesh/import_off.h>
+
+#include<vcg/complex/algorithms/point_sampling.h>
+
+using namespace vcg;
+using namespace std;
+
+class MyEdge;
+class MyFace;
+class MyVertex;
+struct MyUsedTypes : public UsedTypes<	Use<MyVertex>   ::AsVertexType,
+                                        Use<MyEdge>     ::AsEdgeType,
+                                        Use<MyFace>     ::AsFaceType>{};
+
+class MyVertex  : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags  >{};
+class MyFace    : public Face< MyUsedTypes, face::FFAdj,  face::VertexRef, face::BitFlags > {};
+class MyEdge    : public Edge<MyUsedTypes>{};
+class MyMesh    : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge>  > {};
+
+int main( int argc, char **argv )
+{
+  if(argc<2)
+  {
+    printf("Usage trimesh_base <meshfilename.obj>\n");
+    return -1;
+  }
+
+  MyMesh m;
+
+  if(tri::io::ImporterOFF<MyMesh>::Open(m,argv[1])!=0)
+  {
+    printf("Error reading file  %s\n",argv[1]);
+    exit(0);
+  }
+  vector<Point3f> pointVec;
+  float radius;
+  tri::PoissonSampling<MyMesh>(m,pointVec,1000,radius);
+
+  return 0;
+}
diff --git a/apps/sample/trimesh_sampling/trimesh_sampling.pro b/apps/sample/trimesh_sampling/trimesh_sampling.pro
new file mode 100644
index 00000000..e112f066
--- /dev/null
+++ b/apps/sample/trimesh_sampling/trimesh_sampling.pro
@@ -0,0 +1,3 @@
+include(../common.pri)
+TARGET = trimesh_sampling
+SOURCES += trimesh_sampling.cpp