diff --git a/CDeTriaTria.cpp b/CDeTriaTria.cpp
index c4499f0..c9fd818 100644
--- a/CDeTriaTria.cpp
+++ b/CDeTriaTria.cpp
@@ -12,11 +12,10 @@
 //----------------------------------------------------------------------------
 
 #include "stdafx.h"
-#include "DistLineLine.h"
 #include "CDeTriaTria.h"
+#include "/EgtDev/Include/EGkDistLineLine.h"
 #include "/EgtDev/Include/EGkIntersPlanePlane.h"
 #include <array>
-#include <algorithm>
 
 using namespace std ;
 
diff --git a/CurveComposite.cpp b/CurveComposite.cpp
index a5f0ae0..a6132ee 100644
--- a/CurveComposite.cpp
+++ b/CurveComposite.cpp
@@ -745,7 +745,7 @@ CurveComposite::Load( NgeReader& ngeIn)
       ICurve* pCrv = ::GetCurve( pGeoO) ;
       bOk = bOk && ( pCrv != nullptr  &&  pCrv->IsSimple()) ;
      // aggiungo questa curva (sicuramente semplice)
-      bOk = bOk && AddSimpleCurve( pCrv) ;
+      bOk = bOk && AddSimpleCurve( pCrv, true, 10 * EPS_SMALL) ;
      // se errore 
      if ( ! bOk)
          return false ;
diff --git a/DistLineLine.cpp b/DistLineLine.cpp
index a045b45..4a31c30 100644
--- a/DistLineLine.cpp
+++ b/DistLineLine.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
-//  EgalTech 2020-2022
+//  EgalTech 2020-2024
 //----------------------------------------------------------------------------
-// File : DistLineLine.h      Data : 12.08.22         Versione : 2.4h1
+// File : DistLineLine.cpp      Data : 10.05.24         Versione : 2.6e3
 // Contenuto : Implementazione della classe distanza fra elementi lineari.
 //
 //
@@ -12,11 +12,10 @@
 //----------------------------------------------------------------------------
 
 #include "stdafx.h"
-#include "DistLineLine.h"
+#include "/EgtDev/Include/EGkDistLineLine.h"
 #include "/EgtDev/Include/EgtNumUtils.h"
 #include "/EgtDev/Include/EGkGeoCollection.h"
 #include "/EgtDev/Include/EGkGeoConst.h"
-#include <algorithm>
 
 using namespace std ;
 
diff --git a/DistLineLine.h b/DistLineLine.h
deleted file mode 100644
index 1315c29..0000000
--- a/DistLineLine.h
+++ /dev/null
@@ -1,53 +0,0 @@
-//----------------------------------------------------------------------------
-//  EgalTech 2020-2020
-//----------------------------------------------------------------------------
-// File : DistLineLine.h      Data : 06.11.20         Versione : 2.2k1
-// Contenuto : Dichiarazione della classe distanza fra elementi lineari.
-//
-//
-//
-// Modifiche : 06.11.20 LM Creazione modulo.
-//
-//
-//----------------------------------------------------------------------------
-
-#pragma once
-
-#include "/EgtDev/Include/EGkVector3d.h"
-#include "/EgtDev/Include/EGkPoint3d.h"
-
-//----------------------------------------------------------------------------
-class DistLineLine
-{
-   public :
-      DistLineLine( const Point3d& ptSt1, const Point3d& ptEn1,
-                    const Point3d& ptSt2, const Point3d& ptEn2,
-                    bool bIsSegment1 = true, bool bIsSegment2 = true) ;
-      DistLineLine( const Point3d& ptSt1, const Vector3d& vtD1, double dLen1,
-                    const Point3d& ptSt2, const Vector3d& vtD2, double dLen2,
-                    bool bIsSegment1 = true, bool bIsSegment2 = true) ;
-
-   public :
-      bool GetSqDist( double& dSqDist) const ;
-      bool GetDist( double& dDist) const ;
-      bool IsEpsilon( double dTol) const
-              { double dSqDist ; return ( GetSqDist( dSqDist)  &&  ( dSqDist < SQ_EPS_ZERO  ||  dSqDist < dTol * dTol)) ; }
-      bool IsSmall( void) const
-              { return IsEpsilon( EPS_SMALL) ; }
-      bool IsZero( void) const
-              { return IsEpsilon( EPS_ZERO) ;  }
-      bool GetMinDistPoints( Point3d& ptMinDist1, Point3d& ptMinDist2) const ;
-      bool GetPositionsAtMinDistPoints( double& dPos1, double& dPos2) const ;
-
-   private :
-      void Calculate( const Point3d& ptSt1, const Vector3d& vtD1, double dLen1,
-                      const Point3d& ptSt2, const Vector3d& vtD2, double dLen2,
-                      bool bIsSegment1, bool bIsSegment2) ;
-   private:
-      double  m_dSqDist ;
-      mutable double  m_dDist ;
-      double  m_dPos1 ;
-      double  m_dPos2 ;
-      Point3d m_ptMinDist1 ;
-      Point3d m_ptMinDist2 ;
-} ;
diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 6618a64..8e19baa 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/EgtGeomKernel.vcxproj b/EgtGeomKernel.vcxproj
index 801df76..5913a89 100644
--- a/EgtGeomKernel.vcxproj
+++ b/EgtGeomKernel.vcxproj
@@ -328,6 +328,7 @@ copy $(TargetPath) \EgtProg\Dll64</Command>
     <ClInclude Include="..\Include\EGkCDeConeFrustumClosedSurfTm.h" />
     <ClInclude Include="..\Include\EGkCDeConvexTorusClosedSurfTm.h" />
     <ClInclude Include="..\Include\EGkCDeRectPrismoidClosedSurfTm.h" />
+    <ClInclude Include="..\Include\EGkDistLineLine.h" />
     <ClInclude Include="..\Include\EGkIntersCurveSurfTm.h" />
     <ClInclude Include="..\Include\EGkIntersLineBox.h" />
     <ClInclude Include="..\Include\EGkIntersLineVolZmap.h" />
@@ -595,7 +596,6 @@ copy $(TargetPath) \EgtProg\Dll64</Command>
     <ClInclude Include="CAvSimpleSurfFrMove.h" />
     <ClInclude Include="CAvToolSurfTm.h" />
     <ClInclude Include="CreateCurveAux.h" />
-    <ClInclude Include="DistLineLine.h" />
     <ClInclude Include="DistPointArc.h" />
     <ClInclude Include="DistPointCrvAux.h" />
     <ClInclude Include="DistPointCrvBezier.h" />
diff --git a/EgtGeomKernel.vcxproj.filters b/EgtGeomKernel.vcxproj.filters
index edcd982..4f414fe 100644
--- a/EgtGeomKernel.vcxproj.filters
+++ b/EgtGeomKernel.vcxproj.filters
@@ -1118,9 +1118,6 @@
     <ClInclude Include="..\Include\EGkIntersPlaneBox.h">
       <Filter>File di intestazione\Include</Filter>
     </ClInclude>
-    <ClInclude Include="DistLineLine.h">
-      <Filter>File di intestazione</Filter>
-    </ClInclude>
     <ClInclude Include="CDeUtility.h">
       <Filter>File di intestazione</Filter>
     </ClInclude>
@@ -1214,6 +1211,9 @@
     <ClInclude Include="..\Include\EGkQuaternion.h">
       <Filter>File di intestazione\Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\EGkDistLineLine.h">
+      <Filter>File di intestazione\Include</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="EgtGeomKernel.rc">
diff --git a/IntersLineCaps.cpp b/IntersLineCaps.cpp
index 0b1553f..fb975b0 100644
--- a/IntersLineCaps.cpp
+++ b/IntersLineCaps.cpp
@@ -14,7 +14,7 @@
 //--------------------------- Include ----------------------------------------
 #include "stdafx.h"
 #include "IntersLineCaps.h"
-#include "DistLineLine.h"
+#include "/EgtDev/Include/EGkDistLineLine.h"
 #include "/EgtDev/Include/EGkIntersLineSphere.h"
 
 using namespace std ;
diff --git a/IntersLineTria.cpp b/IntersLineTria.cpp
index 436bb44..c831752 100644
--- a/IntersLineTria.cpp
+++ b/IntersLineTria.cpp
@@ -18,7 +18,7 @@
 #include "IntersLineLine.h"
 #include "IntersLineTria.h"
 #include "DistPointLine.h"
-#include "DistLineLine.h"
+#include "/EgtDev/Include/EGkDistLineLine.h"
 #include "/EgtDev/Include/EGkIntersLinePlane.h"
 #include "/EgtDev/Include/EGkFrame3d.h"
 #include <array>
diff --git a/SurfTriMesh.cpp b/SurfTriMesh.cpp
index 9075f16..5e847b2 100644
--- a/SurfTriMesh.cpp
+++ b/SurfTriMesh.cpp
@@ -21,9 +21,9 @@
 #include "NgeReader.h"
 #include "SurfFlatRegion.h"
 #include "DistPointLine.h"
-#include "DistLineLine.h"
 #include "Triangulate.h"
 #include "GeoConst.h"
+#include "/EgtDev/Include/EGkDistLineLine.h"
 #include "/EgtDev/Include/EGkIntersLinePlane.h"
 #include "/EgtDev/Include/EGkPointGrid3d.h"
 #include "/EgtDev/Include/EGkPolyLine.h"
diff --git a/SurfTriMeshUtilities.cpp b/SurfTriMeshUtilities.cpp
index 738d227..d1a374b 100644
--- a/SurfTriMeshUtilities.cpp
+++ b/SurfTriMeshUtilities.cpp
@@ -16,7 +16,7 @@
 #include "CurveLine.h"
 #include "Triangulate.h"
 #include "DistPointLine.h"
-#include "DistLineLine.h"
+#include "/EgtDev/Include/EGkDistLineLine.h"
 #include <unordered_map>
 
 using namespace std ;