diff --git a/EGkDistPointSurfTm.h b/EGkDistPointSurfTm.h
index 1a75aef..a168d84 100644
--- a/EGkDistPointSurfTm.h
+++ b/EGkDistPointSurfTm.h
@@ -47,6 +47,7 @@ class DistPointSurfTm
                        { return IsEpsilon( EPS_ZERO) ; }
       EGK_EXPORT bool GetMinDistPoint( Point3d& ptMinDistPoint) const ;
       EGK_EXPORT bool GetMinDistTriaIndex( int& nMinDistTriaIndex) const ;
+      EGK_EXPORT bool GetMinDistTriaIndices( INTVECTOR& vMinDistTriaIndex) const ;
       EGK_EXPORT bool IsPointInside( void) const
                         { return ( m_bIsInside  &&  m_bIsSurfClosed) ; }
       EGK_EXPORT bool IsPointOnLeftSide( void) const
@@ -56,11 +57,12 @@ class DistPointSurfTm
       void Calculate( const Point3d& ptP, const ISurfTriMesh& tmSurf) ;
 
    private :
-      double  m_dDist ;
-      Point3d m_ptMinDistPoint ;
-      int     m_nMinDistTriaIndex ;
-      bool    m_bIsInside ;
-      bool    m_bIsSurfClosed ;
+      double  m_dDist ;                   // Minima distanza del punto dalla superficie
+      Point3d m_ptMinDistPoint ;          // Punto sulla superficie a minima distanza
+      int     m_nMinDistTriaIndex ;       // Triangolo utilizzato per calcolare il punto a minima distanza
+      INTVECTOR m_vnMinDistTriaIndex ;    // Indici dei triangoli a minima distanza
+      bool    m_bIsInside ;               // Flag per punto interno o esterno alla superficie ( se chiusa )
+      bool    m_bIsSurfClosed ;           // Flag per superficie aperta o chiusa
 } ;
 
 //----------------------------------------------------------------------------
diff --git a/EGkVolZmap.h b/EGkVolZmap.h
index b158195..f38293d 100644
--- a/EGkVolZmap.h
+++ b/EGkVolZmap.h
@@ -94,6 +94,7 @@ class __declspec( novtable) IVolZmap : public IGeoObj
       virtual bool AddSurfTm( const ISurfTriMesh* pStm) = 0 ;
       virtual bool SubtractSurfTm( const ISurfTriMesh* pStm) = 0 ;
       virtual bool MakeUniform( double dToler) = 0 ;
+      virtual bool Offset( double dOffs, int nType) = 0 ;
 } ;
 
 //-----------------------------------------------------------------------------
diff --git a/EXeConst.h b/EXeConst.h
index c209fe9..22bba6c 100644
--- a/EXeConst.h
+++ b/EXeConst.h
@@ -148,6 +148,11 @@ enum SimHideErr { SHE_NONE = 0,               // nessun errore
                   SHE_SPECIAL = 5,            // errore speciale/custom
                   SHE_GENERAL = 6} ;          // errore generico
 
+//----------------- Costanti Offset per VolZmap --------------------------------
+enum VolZmapOffset { FILLET = 0 ,             // come in VolZmap
+                     CHAMFER = 1,             // come in VolZmap
+                     EXTEND = 2 } ;           // come in VolZmap
+
 //----------------- Costanti per sostituzione direttorio e nome progetto --------------------
 const std::string SUB_PROJECT_DIR = "%PRJDIR%" ;
 const std::string SUB_PROJECT_TITLE = "%PRJTITLE%" ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index fd41f99..2003750 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -733,6 +733,7 @@ EXE_EXPORT bool ExeVolZmapMillingStep( int nId, const Point3d& ptPs, const Vecto
 EXE_EXPORT bool ExeCutVolZmapPlane( int nId, const Point3d& ptOn, const Vector3d& vtN, int nRefType) ;
 EXE_EXPORT bool ExeUpdateVolZmapByAddingSurfTm( int nVolZmapId, int nStmId) ;
 EXE_EXPORT bool ExeUniformVolZmap( int nVolZmapId, double dToler) ;
+EXE_EXPORT bool ExeVolZMapOffset( int nId, double dDist, int nType) ;
 
 // GeomDB Get
 EXE_EXPORT bool ExeTextNormVersor( int nId, int nRefId, Vector3d& vtNorm) ;