diff --git a/SurfBezier.cpp b/SurfBezier.cpp
index 43e7cdf..21c8934 100644
--- a/SurfBezier.cpp
+++ b/SurfBezier.cpp
@@ -47,6 +47,7 @@ using namespace std ;
 GEOOBJ_REGISTER( SRF_BEZIER, NGE_S_BEZ, SurfBezier) ;
 
 static bool ChangeStartForClosed( PolyLine& plU0, PolyLine& plU1, ICurveComposite* pCrvU0, ICurveComposite* pCrvU1) ;
+static bool ParametrizeByLen( const ICurveComposite* pCurve, DBLVECTOR& vParam) ;
 
 //----------------------------------------------------------------------------
 SurfBezier::SurfBezier( void)
@@ -4529,32 +4530,29 @@ SurfBezier::FindMatchByParam( const PolyLine& pl0, const PolyLine& pl1, INTVECTO
 }
 
 //----------------------------------------------------------------------------
-bool
-SurfBezier::ParametrizeByLen( const ICurveComposite* pCurve0, const ICurveComposite* pCurve1, DBLVECTOR& vParam0, DBLVECTOR& vParam1) const
+static bool
+ParametrizeByLen( const ICurveComposite* pCurve, DBLVECTOR& vParam)
 {
-   int nSpanU0 = pCurve0->GetCurveCount() ;
-   int nSpanU1 = pCurve1->GetCurveCount() ;
-   DBLVECTOR vLen0 ;
-   DBLVECTOR vLen1 ;
-   double dLenTot0 = 0 ;
-   double dLenTot1 = 0 ;
-   for( int i = 0 ; i < nSpanU0 ; ++i) {
-      const ICurve* pSubCrv0 = pCurve0->GetCurve( i) ;
-      double dLen ; pSubCrv0->GetLength( dLen) ;
-      dLenTot0 += dLen ;
-      vLen0.push_back( dLen) ;
-   }
-   for( int i = 0 ; i < nSpanU1 ; ++i) {
-      const ICurve* pSubCrv1 = pCurve1->GetCurve( i) ;
-      double dLen ; pSubCrv1->GetLength( dLen) ;
-      dLenTot1 += dLen ;
-      vLen1.push_back( dLen) ;
+   int nSpanU = pCurve->GetCurveCount() ;
+   DBLVECTOR vLen ;
+   double dLenTot = 0 ;
+   for( int i = 0 ; i < nSpanU ; ++i) {
+      const ICurve* pSubCrv = pCurve->GetCurve( i) ;
+      double dLen ; pSubCrv->GetLength( dLen) ;
+      dLenTot += dLen ;
+      vLen.push_back( dLen) ;
    }
    // determino il parametro di ogni curva rispetto alla lunghezza totale
-   for ( int i = 0 ; i < nSpanU0 ; ++i)
-      vParam0.push_back( vLen0[i] / dLenTot0) ;
-   for ( int i = 0 ; i < nSpanU1 ; ++i)
-      vParam1.push_back( vLen1[i] / dLenTot1) ;
+   for ( int i = 0 ; i < nSpanU ; ++i)
+      vParam.push_back( vLen[i] / dLenTot) ;
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+static bool
+FindCommonParametrization( const DBLMATRIX& mParam, DBLVECTOR& vCommonParam)
+{
 
    return true ;
 }
@@ -4587,7 +4585,8 @@ SurfBezier::ParametrizeByLen( const ICurveComposite* pCurve0, const ICurveCompos
 //   return true ;
 //}
 
-static bool ChangeStartForClosed( PolyLine& plU0, PolyLine& plU1, ICurveComposite* pCrvU0, ICurveComposite* pCrvU1) {
+static bool
+ChangeStartForClosed( PolyLine& plU0, PolyLine& plU1, ICurveComposite* pCrvU0, ICurveComposite* pCrvU1) {
    // se sono chiuse devo controllare che gli start siano il più allineati possibile, se non lo sono cambio gli start
    if ( plU0.IsClosed() && plU1.IsClosed()) {
       vector<tuple<double,int,Point3d,int,Point3d>> vDistVert ;
diff --git a/SurfBezier.h b/SurfBezier.h
index 37c716b..86f5b54 100644
--- a/SurfBezier.h
+++ b/SurfBezier.h
@@ -203,7 +203,6 @@ class SurfBezier : public ISurfBezier, public IGeoObjRW
       // funzione che calcola se gli edge sono collassati in poli
       bool CalcPoles( void) const ;
       bool FindMatchByParam( const PolyLine& pl0, const PolyLine& pl1, INTVECTOR& vMatch, int& nLong) const ;
-      bool ParametrizeByLen( const ICurveComposite* pCurve0, const ICurveComposite* pCurve1, DBLVECTOR& vParam0, DBLVECTOR& vParam1) const ;
 
    private :
       ObjGraphicsMgr  m_OGrMgr ;        // gestore grafica dell'oggetto