diff --git a/EGkIntersCurves.h b/EGkIntersCurves.h
index ff55730..aed9ecd 100644
--- a/EGkIntersCurves.h
+++ b/EGkIntersCurves.h
@@ -124,7 +124,7 @@ class IntersCurveCurve
       //! Restituisce il punto di intersezione pił vicino al punto passato
       EGK_EXPORT bool GetIntersPointNearTo( int nCrv, const Point3d& ptNear, Point3d& ptI) ;
       //! Restituisce la classificazione di una curva rispetto all'altra ( nCrv=0 -> CurvaA, nCrv=1 -> CurvaB)
-      EGK_EXPORT bool GetCurveClassification( int nCrv, CRVCVECTOR& ccClass) ;
+      EGK_EXPORT bool GetCurveClassification( int nCrv, double dLenMin, CRVCVECTOR& ccClass) ;
       //! Restituisce la classificazione di curve chiuse secondo le regole delle regioni
       EGK_EXPORT int  GetRegionCurveClassification( void) ;
 
@@ -142,7 +142,7 @@ class IntersCurveCurve
       void CrvCompoCrvCompoCalculate( const ICurve& CurveA, const ICurve& CurveB) ;
       bool AdjustIntersParams( bool bAdjCrvA, bool bAdjCrvB) ;
       bool SwapInfoAB( ICCIVECTOR& Info, int IndCrvOrd) ;
-      bool CalcCurveClassification( const ICurve* pCurve, const ICCIVECTOR& Info, CRVCVECTOR& ccClass) ;
+      bool CalcCurveClassification( const ICurve* pCurve, const ICCIVECTOR& Info, double dLenMin, CRVCVECTOR& ccClass) ;
       bool CalcCurveInOrOut( const ICurve* pCurveA, const ICurve* pCurveB, CRVCVECTOR& ccClass) ;
       bool GetCurveOutClass( const ICurve* pCurve, int& nClass) ;
 
diff --git a/EGkSurfFlatRegion.h b/EGkSurfFlatRegion.h
index 269bd0a..55e14a0 100644
--- a/EGkSurfFlatRegion.h
+++ b/EGkSurfFlatRegion.h
@@ -45,7 +45,7 @@ class __declspec( novtable) ISurfFlatRegion : public ISurf
       virtual const ISurfTriMesh* GetAuxSurf( void) const = 0 ;
       virtual ISurfFlatRegion* CloneChunk( int nChunk) const = 0 ;
       virtual bool GetChunkCentroid( int nChunk, Point3d& ptCen) const ;
-      virtual bool GetCurveClassification( const ICurve& Crv, CRVCVECTOR& ccClass) const = 0 ;
+      virtual bool GetCurveClassification( const ICurve& Crv, double dLenMin, CRVCVECTOR& ccClass) const = 0 ;
       virtual int  GetChunkSimpleClassification( int nChunk, const ISurfFlatRegion& Other, int nOthChunk) const ;   // compare only outsides
 } ;