diff --git a/CurveComposite.cpp b/CurveComposite.cpp
index 6ba894b..b1a7f09 100644
--- a/CurveComposite.cpp
+++ b/CurveComposite.cpp
@@ -1626,6 +1626,40 @@ CurveComposite::AddPoint( const Point3d& ptStart)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+bool
+CurveComposite::AddLineTg( double dLen, bool bEndOrStart)
+{
+  // verifico lo stato
+   if ( m_nStatus != OK)
+      return false ;
+  // costruisco la linea
+   PtrOwner<CurveLine> pLine( CreateBasicCurveLine()) ;
+   if ( IsNull( pLine))
+      return false ;
+  // se da aggiungere alla fine
+   if ( bEndOrStart) {
+      Point3d ptEnd ;
+      Vector3d vtEnd ;
+      if ( ! GetEndPoint( ptEnd)  ||  ! GetEndDir( vtEnd))
+         return false ;
+      Point3d ptNew = ptEnd + vtEnd * dLen ;
+      if ( ! pLine->Set( ptEnd, ptNew))
+         return false ;
+   }
+  // altrimenti da aggiungere all'inizio
+   else {
+      Point3d ptStart ;
+      Vector3d vtStart ;
+      if ( ! GetStartPoint( ptStart)  ||  ! GetStartDir( vtStart))
+         return false ;
+      Point3d ptNew = ptStart - vtStart * dLen ;
+      if ( ! pLine->Set( ptNew, ptStart))
+         return false ;
+   }
+   return AddCurve( Release( pLine), bEndOrStart) ;
+}
+
 //----------------------------------------------------------------------------
 bool
 CurveComposite::AddLine( const Point3d& ptNew, bool bEndOrStart)
diff --git a/CurveComposite.h b/CurveComposite.h
index 3e28f5d..e641285 100644
--- a/CurveComposite.h
+++ b/CurveComposite.h
@@ -1,12 +1,13 @@
 //----------------------------------------------------------------------------
 //  EgalTech 2013-2022
 //----------------------------------------------------------------------------
-// File : CurveComposite.h       Data : 23.01.22          Versione : 2.4a4
+// File : CurveComposite.h       Data : 24.03.22          Versione : 2.4c2
 // Contenuto : Dichiarazione della classe Curva composita.
 //
 //
 //
 // Modifiche : 16.04.13 DS Creazione modulo.
+//             24.03.22 DS Aggiunto metodo AddLineTg.
 //
 //
 //----------------------------------------------------------------------------
@@ -144,8 +145,9 @@ class CurveComposite : public ICurveComposite, public IGeoObjRW
       bool ChangeStartPoint( double dU) override ;
       bool AddPoint( const Point3d& ptStart) override ;
       bool AddLine( const Point3d& ptNew, bool bEndOrStart = true) override ;
-      bool AddArcTg( const Point3d& ptNew, bool bEndOrStart = true) override ;
+      bool AddLineTg( double dLen, bool bEndOrStart = true) override ;
       bool AddArc2P( const Point3d& ptOther, const Point3d& ptNew, bool bEndOrStart = true) override ;
+      bool AddArcTg( const Point3d& ptNew, bool bEndOrStart = true) override ;
       bool AddJoint( double dU) override ;
       bool ModifyJoint( int nU, const Point3d& ptNewJoint) override ;
       bool RemoveJoint( int nU) override ;
diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 1f03f6a..8ff5da2 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ