diff --git a/OffsetCurve.cpp b/OffsetCurve.cpp
index c5a6cb7..b52168a 100644
--- a/OffsetCurve.cpp
+++ b/OffsetCurve.cpp
@@ -60,8 +60,8 @@ OffsetCurve::Reset( void)
       }
    }
    m_CrvLst.clear() ;
-   m_pt = P_INVALID ;
-   m_vt = V_INVALID ;
+   m_ptOffs = P_INVALID ;
+   m_vtOut = V_INVALID ;
    return true ;
 }
 
@@ -714,8 +714,8 @@ OffsetCurve::Make( const ICurve* pCrv, double dDist, int nType)
            // ( e.g. alcune curve aperte) non se ne restiusce nessuno. Da estendere, se necessario, individuando i punti dal lato 
            // di offset richiesto
             if ( vPntOffs.size() == 1) {
-               m_pt = vPntOffs[0].first ;
-               m_vt = vPntOffs[0].second ;            
+               m_ptOffs = vPntOffs[0].first ;
+               m_vtOut = vPntOffs[0].second ;            
             }        
          }
       }         
@@ -747,20 +747,20 @@ OffsetCurve::Make( const ICurve* pCrv, double dDist, int nType)
          pCrv->Scale( GLOB_FRM, 1 / dExtrOnN, 1, 1) ;
          pCrv->ToGlob( frCopy) ;
       }
-      if ( m_pt.IsValid()) {
-         m_pt.Scale( GLOB_FRM, 1 / dExtrOnN, 1, 1) ;
-         m_pt.ToGlob( frCopy) ;
-         m_vt.Scale( GLOB_FRM, 1 / dExtrOnN, 1, 1) ;
-         m_vt.ToGlob( frCopy) ;
+      if ( m_ptOffs.IsValid()) {
+         m_ptOffs.Scale( GLOB_FRM, 1 / dExtrOnN, 1, 1) ;
+         m_ptOffs.ToGlob( frCopy) ;
+         m_vtOut.Scale( GLOB_FRM, 1 / dExtrOnN, 1, 1) ;
+         m_vtOut.ToGlob( frCopy) ;
       }
 
    }
    else if ( bNeedRef) {
       for ( auto pCrv : m_CrvLst)
          pCrv->ToGlob( frCopy) ;
-      if ( m_pt.IsValid()) {       
-         m_pt.ToGlob( frCopy) ;
-         m_vt.ToGlob( frCopy) ;
+      if ( m_ptOffs.IsValid()) {       
+         m_ptOffs.ToGlob( frCopy) ;
+         m_vtOut.ToGlob( frCopy) ;
       }
    }
 
@@ -841,14 +841,14 @@ OffsetCurve::GetShorterCurve( void)
 
 //----------------------------------------------------------------------------
 bool
-OffsetCurve::GetPointOffset( Point3d& pt, Vector3d& vt)
+OffsetCurve::GetPointOffset( Point3d& ptOffs, Vector3d& vtOut)
 {
   // verifico se valori validi da restituire
-   if ( ! m_pt.IsValid()  ||  ! m_vt.IsValid())
+   if ( ! m_ptOffs.IsValid()  ||  ! m_vtOut.IsValid())
       return false ;
 
-   pt = m_pt ;
-   vt = m_vt ;
+   ptOffs = m_ptOffs ;
+   vtOut = m_vtOut ;
 
    return true ;
 }