diff --git a/CamData.h b/CamData.h
index 8988e47..d8fa12f 100644
--- a/CamData.h
+++ b/CamData.h
@@ -67,6 +67,8 @@ class CamData : public IUserObj
       bool SetBackAuxDir( const Vector3d& vtDir) ;
       const int GetMoveType( void) const
                          { return m_nMove ; }
+      const bool IsLine( void) const
+                         { return ( m_nMove == 0  ||  m_nMove == 1) ; }
       const bool IsArc( void) const
                          { return ( m_nMove == 2  ||  m_nMove == 3) ; }
       const Vector3d& GetToolDir( void) const
diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index e617416..016744f 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/MachMgr.h b/MachMgr.h
index d452eab..6909785 100644
--- a/MachMgr.h
+++ b/MachMgr.h
@@ -395,6 +395,7 @@ class MachMgr : public IMachMgr
       bool SetCalcSolCh( int nScc, bool bExact) ;
       bool VerifyAngleOutstroke( int nInd, double dAng) const ;
       bool VerifyOutstroke( double dX, double dY, double dZ, const DBLVECTOR& vAng, bool bClear, int& nStat) const ;
+      bool ExistProtectedAreas( void) const ;
      // Operations
       bool GetOperationNewName( std::string& sName) const ;
       const ToolData* GetMachiningToolData( void) const ;
diff --git a/MachMgrMachines.cpp b/MachMgrMachines.cpp
index e95c0a8..b4921a1 100644
--- a/MachMgrMachines.cpp
+++ b/MachMgrMachines.cpp
@@ -653,6 +653,14 @@ MachMgr::VerifyOutstroke( double dX, double dY, double dZ, const DBLVECTOR& vAng
    return ( ( pMch != nullptr) ? pMch->VerifyOutstroke( dX, dY, dZ, vAng, bClear, nStat) : false) ;
 }
 
+//----------------------------------------------------------------------------
+bool
+MachMgr::ExistProtectedAreas( void) const
+{
+   Machine* pMch = GetCurrMachine() ;
+   return ( ( pMch != nullptr) ? pMch->ExistProtectedAreas() : false) ;
+}
+
 //----------------------------------------------------------------------------
 std::string
 MachMgr::GetOutstrokeInfo( bool bMM) const
diff --git a/Machine.h b/Machine.h
index 31c0481..f8b1643 100644
--- a/Machine.h
+++ b/Machine.h
@@ -130,6 +130,7 @@ class Machine
       bool LimitAngleToStroke( int nInd, double& dAng) const ;
       bool VerifyAngleOutstroke( int nInd, double dAng) const ;
       bool VerifyOutstroke( double dX, double dY, double dZ, const DBLVECTOR& vAng, bool bClear, int& nStat) const ;
+      bool ExistProtectedAreas( void) const ;
       bool VerifyProtectedAreas( double dX, double dY, double dZ, const DBLVECTOR& vAng, int& nStat) ;
       bool VerifyOutstroke( const std::string& sAxName, double dVal) const ;
       std::string GetOutstrokeInfo( bool bMM = true) const ;
diff --git a/MachineCalc.cpp b/MachineCalc.cpp
index fddc17a..5bf557b 100644
--- a/MachineCalc.cpp
+++ b/MachineCalc.cpp
@@ -1375,6 +1375,13 @@ Machine::VerifyOutstroke( double dX, double dY, double dZ, const DBLVECTOR& vAng
    return true ;
 }
 
+//----------------------------------------------------------------------------
+ bool
+ Machine::ExistProtectedAreas(void) const
+ {
+   return LuaExistsFunction( ON_VERIFY_PROTECTEDAREAS) ;
+ }
+
 //----------------------------------------------------------------------------
 bool
 Machine::VerifyProtectedAreas( double dX, double dY, double dZ, const DBLVECTOR& vAng, int& nStat)
diff --git a/Operation.cpp b/Operation.cpp
index 5e195c2..952ff71 100644
--- a/Operation.cpp
+++ b/Operation.cpp
@@ -1241,8 +1241,31 @@ Operation::CalculateClPathAxesValues( int nClPathId, int nLinAxes, int nRotAxes,
       Vector3d vtBackAux ;
       m_pMchMgr->GetCurrMachine()->GetBackAuxDirFromAngles( vAng1, vtBackAux)  ;
       pCamData->SetBackAuxDir( vtBackAux) ;
+     // se esiste precedente, corrente è linea ed esistono aree protette, devo verificare anche i punti interni
+      if ( ! bFirst  &&  pCamData->IsLine()  &&  m_pMchMgr->ExistProtectedAreas()) {
+        // verifico i limiti di corsa dei punti lungo l'arco
+         const int NUM_VERIF_STEP = 16 ;
+         Vector3d vtN = pCamData->GetAxesNormDir() ;
+         Point3d ptPrec( dXprec, dYprec, dZprec) ;
+         Point3d ptP( dX, dY, dZ) ;
+         for ( int i = 1 ; i < NUM_VERIF_STEP ; ++ i) {
+            double dCoeff = double( i) / NUM_VERIF_STEP ;
+            Point3d ptCurr = Media( ptPrec, ptP, dCoeff) ;
+            DBLVECTOR vAng( vAng1.size()) ;
+            for ( size_t i = 0 ; i < vAng1.size() ; ++ i)
+               vAng[i] = vAxRotPrec[i] * ( 1 - dCoeff) + vAng1[i] * dCoeff ;
+            int nStat ;
+            bool bOsOk = m_pMchMgr->VerifyOutstroke( ptCurr.x, ptCurr.y, ptCurr.z, vAng, false, nStat) ;
+            if ( ! bOsOk  ||  nStat != 0) {
+               bOk = false ;
+               pCamData->SetAxes( CamData::AS_OUTSTROKE, vAxVal) ;
+               string sInfo = "Outstroke : " + m_pMchMgr->GetOutstrokeInfo() ;
+               LOG_INFO( GetEMkLogger(), sInfo.c_str())
+            }
+         }
+      }
      // se arco devo calcolarne il centro in assi macchina
-      if ( pCamData->IsArc()) {
+      else if ( pCamData->IsArc()) {
         // devo lavorare con arco schiacciato nel suo piano
          Point3d ptCen = pCamData->GetCenter() ;
          AdjustArcCenterForAxesCalc( pCamData, ptCen) ;
@@ -1334,7 +1357,6 @@ Operation::CalculateClPathAxesValues( int nClPathId, int nLinAxes, int nRotAxes,
                      pCamData->SetAxes( CamData::AS_OUTSTROKE, vAxVal) ;
                      string sInfo = "Outstroke : " + m_pMchMgr->GetOutstrokeInfo() ;
                      LOG_INFO( GetEMkLogger(), sInfo.c_str())
-                     continue ;
                   }
                }
             }