diff --git a/Angle.cpp b/Angle.cpp
index e0ebeaa..8f8e4ee 100644
--- a/Angle.cpp
+++ b/Angle.cpp
@@ -63,3 +63,57 @@ AngleInSpan( double dAngDeg, double dAngRefDeg, double dAngSpanDeg)
                dAngDiffDeg < dHalfAngSpanDeg + EPS_ANG_SMALL) ;
    }
 }
+
+//----------------------------------------------------------------------------
+bool
+AngleInRange( double dAngDeg, double dAngMinDeg, double dAngMaxDeg)
+{
+   return AngleInSpan( dAngDeg, ( dAngMinDeg + dAngMaxDeg) / 2, dAngMaxDeg - dAngMinDeg) ;
+}
+
+//----------------------------------------------------------------------------
+bool
+AdjustAngleInSpan( double& dAngDeg, double dAngRefDeg, double dAngSpanDeg)
+{
+  // Verifico consistenza intervallo
+   if ( dAngSpanDeg < -EPS_ANG_ZERO)
+      return false ;
+   // Se intervallo vero
+   if ( dAngSpanDeg > EPS_ANG_SMALL) {
+      double dTryDeg = dAngDeg ;
+     // eseguo gli aggiustamenti
+      while ( dTryDeg < dAngRefDeg - dAngSpanDeg)
+         dTryDeg += ANG_FULL ;
+      while ( dTryDeg > dAngRefDeg + dAngSpanDeg)
+         dTryDeg -= ANG_FULL ;
+     // verifico
+      if ( dTryDeg >= dAngRefDeg - dAngSpanDeg  &&  dTryDeg <= dAngRefDeg + dAngSpanDeg) {
+         dAngDeg = dTryDeg ;
+         return true ;
+      }
+      return false ;
+   }
+  // altrimenti un valore
+   else {
+      double dTryDeg = dAngDeg ;
+     // eseguo gli aggiustamenti
+      while ( dTryDeg < dAngRefDeg - EPS_ANG_SMALL)
+         dTryDeg += ANG_FULL ;
+      while ( dTryDeg > dAngRefDeg + EPS_ANG_SMALL)
+         dTryDeg -= ANG_FULL ;
+     // verifico
+      if ( abs( dTryDeg - dAngRefDeg) < EPS_ANG_SMALL) {
+         dAngDeg = dAngRefDeg ;
+         return true ;
+      }
+      else
+         return false ;
+   }
+}
+
+//----------------------------------------------------------------------------
+bool
+AdjustAngleInRange( double& dAngDeg, double dAngMinDeg, double dAngMaxDeg)
+{
+   return AdjustAngleInSpan( dAngDeg, ( dAngMinDeg + dAngMaxDeg) / 2, dAngMaxDeg - dAngMinDeg) ;
+}
diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 613ee4f..1d89882 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ