diff --git a/EgtGraphics.rc b/EgtGraphics.rc
index e470297..14a6602 100644
Binary files a/EgtGraphics.rc and b/EgtGraphics.rc differ
diff --git a/ObjEGrGraphics.h b/ObjEGrGraphics.h
index b2be407..54115dd 100644
--- a/ObjEGrGraphics.h
+++ b/ObjEGrGraphics.h
@@ -38,6 +38,7 @@ class ObjEGrGraphics : public IObjGraphics
                                 const Color& colSpec, float fShin) = 0 ;
       virtual bool AddBackMaterial( const Color& colAmbDiff) = 0 ;
       virtual bool AddPoint( const Point3d& ptP, bool bAux = false) = 0 ;
+      virtual bool AddPoints( const PNTVECTOR& vPnt, bool bAux = false) = 0 ;
       virtual bool AddLines( const PNTVECTOR& vPnt, bool bAux = false) = 0 ;
       virtual bool AddPolyLine( const PolyLine& PL, bool bAux = false) = 0 ;
       virtual bool StartTriangles( int nNum, bool bAux = false) = 0 ;
diff --git a/ObjMultiGraphics.cpp b/ObjMultiGraphics.cpp
index a8a7556..4b18894 100644
--- a/ObjMultiGraphics.cpp
+++ b/ObjMultiGraphics.cpp
@@ -115,6 +115,16 @@ ObjMultiGraphics::AddPoint( const Point3d& ptP, bool bAux)
    return m_vOEGR[m_nCurr]->AddPoint( ptP, bAux) ;
 }
 
+//----------------------------------------------------------------------------
+bool
+ObjMultiGraphics::AddPoints( const PNTVECTOR& vPnt, bool bAux)
+{
+   if ( m_nCurr < 0  ||  m_nCurr >= int( m_vOEGR.size()))
+      return false ;
+   m_bValid = true ;
+   return m_vOEGR[m_nCurr]->AddPoints( vPnt, bAux) ;
+}
+
 //----------------------------------------------------------------------------
 bool
 ObjMultiGraphics::AddLines( const PNTVECTOR& vPnt, bool bAux)
diff --git a/ObjMultiGraphics.h b/ObjMultiGraphics.h
index 6c0375d..3e7315d 100644
--- a/ObjMultiGraphics.h
+++ b/ObjMultiGraphics.h
@@ -37,6 +37,7 @@ class ObjMultiGraphics : public ObjEGrGraphics
                         const Color& colSpec, float fShin) override ;
       bool AddBackMaterial( const Color& colAmbDiff) override ;
       bool AddPoint( const Point3d& ptP, bool bAux = false) override ;
+      bool AddPoints( const PNTVECTOR& vPnt, bool bAux = false) override ;
       bool AddLines( const PNTVECTOR& vPnt, bool bAux = false) override ;
       bool AddPolyLine( const PolyLine& PL, bool bAux = false) override ;
       bool StartTriangles( int nNum, bool bAux = false) override ;
diff --git a/ObjNewGraphics.cpp b/ObjNewGraphics.cpp
index 26ca8c9..e6a11a2 100644
--- a/ObjNewGraphics.cpp
+++ b/ObjNewGraphics.cpp
@@ -116,6 +116,45 @@ ObjNewGraphics::AddPoint( const Point3d& ptP, bool bAux)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+bool
+ObjNewGraphics::AddPoints( const PNTVECTOR& vPnt, bool bAux)
+{
+   if ( m_pScene == nullptr  ||  ! m_pScene->MakeCurrent())
+      return false ;
+  // definisco i buffer per la scheda grafica e vi inserisco i nuovi vertici
+   unsigned int nVaoId ;
+   glGenVertexArrays( 1, &nVaoId) ;
+   if ( nVaoId == 0)
+      return false ;
+   glBindVertexArray( nVaoId) ;
+   unsigned int nVboId ;
+   glGenBuffers( 1, &nVboId) ;
+   if ( nVboId == 0) {
+      glBindVertexArray( 0) ;
+      glDeleteVertexArrays( 1, &nVaoId) ;
+      return false ;
+   }
+   glBindBuffer( GL_ARRAY_BUFFER, nVboId) ;
+   int nCount = int( vPnt.size()) ;
+   glBufferData( GL_ARRAY_BUFFER, nCount * SIZEV3F, NULL, GL_STATIC_DRAW) ;
+   Vert3f  v3V ;
+   for ( int i = 0 ; i < nCount ; ++ i) {
+      v3V.Set( vPnt[i]) ;
+      glBufferSubData( GL_ARRAY_BUFFER, i * SIZEV3F, SIZEV3F, &v3V) ;
+      m_b3Loc.Add( vPnt[i]) ;
+   }
+   glVertexPointer( 3, GL_FLOAT, 0, ((void*)(0))) ;
+   glEnableClientState( GL_VERTEX_ARRAY) ;
+   glBindVertexArray( 0) ;
+  // aggiungo i dati in lista
+   AddVerts( GL_POINTS, nCount, nVaoId, nVboId, bAux) ;
+  // dichiaro valida la grafica
+   m_bValid = true ;
+
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 ObjNewGraphics::AddLines( const PNTVECTOR& vPnt, bool bAux)
diff --git a/ObjNewGraphics.h b/ObjNewGraphics.h
index 7ec7727..74f267c 100644
--- a/ObjNewGraphics.h
+++ b/ObjNewGraphics.h
@@ -71,6 +71,7 @@ class ObjNewGraphics : public ObjEGrGraphics
                         const Color& colSpec, float fShin) override ;
       bool AddBackMaterial( const Color& colAmbDiff) override ;
       bool AddPoint( const Point3d& ptP, bool bAux = false) override ;
+      bool AddPoints( const PNTVECTOR& vPnt, bool bAux = false) override ;
       bool AddLines( const PNTVECTOR& vPnt, bool bAux = false) override ;
       bool AddPolyLine( const PolyLine& PL, bool bAux = false) override ;
       bool StartTriangles( int nNum, bool bAux = false) override ;
diff --git a/ObjOldGraphics.cpp b/ObjOldGraphics.cpp
index e6e8f4f..4238357 100644
--- a/ObjOldGraphics.cpp
+++ b/ObjOldGraphics.cpp
@@ -97,6 +97,28 @@ ObjOldGraphics::AddPoint( const Point3d& ptP, bool bAux)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+bool
+ObjOldGraphics::AddPoints( const PNTVECTOR& vPnt, bool bAux)
+{
+  // modo corrente deve essere nullo
+   if ( m_nCurrMode != GL_NONE)
+      return false ;
+  // start
+   AddStart( GL_POINTS, bAux) ;
+  // inserisco i vertici + aggiorno bbox
+   for ( int i = 0 ; i < int( vPnt.size()) ; ++ i) {
+      AddVert3f( vPnt[i]) ;
+      m_b3Loc.Add( vPnt[i]) ;
+   }
+  // fine
+   AddEnd() ;
+  // dichiaro valida la grafica
+   m_bValid = true ;
+
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 ObjOldGraphics::AddLines( const PNTVECTOR& vPnt, bool bAux)
diff --git a/ObjOldGraphics.h b/ObjOldGraphics.h
index e071391..3d99e4f 100644
--- a/ObjOldGraphics.h
+++ b/ObjOldGraphics.h
@@ -76,6 +76,7 @@ class ObjOldGraphics : public ObjEGrGraphics
                         const Color& colSpec, float fShin) override ;
       bool AddBackMaterial( const Color& colAmbDiff) override ;
       bool AddPoint( const Point3d& ptP, bool bAux = false) override ;
+      bool AddPoints( const PNTVECTOR& vPnt, bool bAux = false) override ;
       bool AddLines( const PNTVECTOR& vPnt, bool bAux = false) override ;
       bool AddPolyLine( const PolyLine& PL, bool bAux = false) override ;
       bool StartTriangles( int nNum, bool bAux = false) override ;
diff --git a/SceneGeom.cpp b/SceneGeom.cpp
index f2c0061..96cd2f6 100644
--- a/SceneGeom.cpp
+++ b/SceneGeom.cpp
@@ -43,7 +43,8 @@ using namespace std ;
 static ObjEGrGraphics* CreateObjEGrGraphics( int nCount, bool bNewWay) ;
 static bool CalcCurveTailMark( const Vector3d& vtRef, const PolyLine& plCrv, PolyLine& plMark) ;
 static bool CalcCurveTipArrow( const Vector3d& vtRef, const PolyLine& plCrv, PolyLine& plArr) ;
-static bool CalcConnectingLines( const PolyLine& plCrv, const Vector3d& vtTh, bool bDense, PNTVECTOR& vPnt) ;
+static bool CalcCurveConnectingLines( const PolyLine& plCrv, const Vector3d& vtTh, bool bDense, PNTVECTOR& vPnt) ;
+static bool CalcCurveJoints( const ICurve* pCurve, PNTVECTOR& vPnt) ;
 
 //----------------------------------------------------------------------------
 bool
@@ -331,6 +332,9 @@ Scene::DrawGeoObj( const IGdbIterator& iIter, int nPass, const MdStMkCol& siObj)
          PolyLine PLA ;
          if ( CalcCurveTipArrow( vtRef, PL, PLA))
             pGraphics->AddPolyLine( PLA, true) ; 
+         PNTVECTOR vPnt ;
+         if ( CalcCurveJoints( pCurve, vPnt))
+            pGraphics->AddPoints( vPnt, true) ;
          // eventuale spessore
          double dTh ;
          Vector3d vtExtr ;
@@ -339,7 +343,7 @@ Scene::DrawGeoObj( const IGdbIterator& iIter, int nPass, const MdStMkCol& siObj)
            // segmenti di raccordo
             PNTVECTOR vPnt ;
             bool bDense = ( nGeoType == CRV_ARC  ||  nGeoType == CRV_BEZIER) ;
-            if ( CalcConnectingLines( PL, dTh * vtExtr, bDense, vPnt))
+            if ( CalcCurveConnectingLines( PL, dTh * vtExtr, bDense, vPnt))
                pGraphics->AddLines( vPnt) ;
            // percorso traslato
             PL.Translate( dTh * vtExtr) ;
@@ -966,7 +970,7 @@ CalcCurveTipArrow( const Vector3d& vtRef, const PolyLine& plCrv, PolyLine& plArr
 
 //----------------------------------------------------------------------------
 static bool
-CalcConnectingLines( const PolyLine& plCrv, const Vector3d& vtTh, bool bDense, PNTVECTOR& vPnt)
+CalcCurveConnectingLines( const PolyLine& plCrv, const Vector3d& vtTh, bool bDense, PNTVECTOR& vPnt)
 {
   // assegno coefficiente
    double dDelta = ( bDense ? 0.25 : 1) ;
@@ -984,4 +988,22 @@ CalcConnectingLines( const PolyLine& plCrv, const Vector3d& vtTh, bool bDense, P
       }
    }
    return true ;
-}
\ No newline at end of file
+}
+
+//----------------------------------------------------------------------------
+static bool
+CalcCurveJoints( const ICurve* pCurve, PNTVECTOR& vPnt)
+{
+  // pulisco il vettore dei punti
+   vPnt.clear() ;
+  // recupero il dominio della curva
+   double dParS = 0, dParE = 1 ;
+   pCurve->GetDomain( dParS, dParE) ;
+  // recupero i punti intermedi
+   for ( double dPar = dParS + 1 ; dPar < dParE - EPS_PARAM ; dPar += 1) {
+      Point3d ptP ;
+      if ( pCurve->GetPointD1D2( dPar, ICurve::FROM_MINUS, ptP))
+         vPnt.push_back( ptP) ;
+   }
+   return true ;
+}