EgtMachKernel :

- migliorata gestione approcci/retrazione in fresature di utensili che non lavorano di testa
- corretta gestione passaggio da aperto a chiuso (curve a J) in svuotature.
- corretta gestione angolo di fianco in tagli con lama con variazioni di Z sulla linea da seguire.

Operation.cpp

@@ -440,6 +440,23 @@ Operation::GetElevation( int nPhase, const Point3d& ptP, const Vector3d& vtTool,
    return true ;
 }
 
+//----------------------------------------------------------------------------
+bool
+Operation::GetElevation( int nPhase, const Point3d& ptP, const Vector3d& vtTool, double dRad, double dLen,
+                         const Vector3d& vtDir, double& dElev) const
+{
+   if ( m_pMchMgr == nullptr  ||  m_pGeomDB == nullptr)
+      return false ;
+  // sopra e sotto
+   double dElev1, dElev2 ;
+   if ( ! GetElevation( nPhase, ptP, vtTool, dRad, vtDir, dElev1))
+      return false ;
+   if ( ! GetElevation( nPhase, ptP + dLen * vtTool, vtTool, dRad, vtDir, dElev2))
+      return false ;
+   dElev = max( dElev1, dElev2) ;
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 Operation::GetAhPointUnderRaw( const Point3d& ptP, const Vector3d& vtTool, double dToolRad, double dToolRadForElev,