diff --git a/EGkProjectCurveSurfTm.h b/EGkProjectCurveSurfTm.h
index 1eb0038..2d2320b 100644
--- a/EGkProjectCurveSurfTm.h
+++ b/EGkProjectCurveSurfTm.h
@@ -39,5 +39,5 @@ typedef std::vector<Point5ax>        PNT5AXVECTOR ;    // vettore di Punti 5assi
 
 //----------------------------------------------------------------------------
 // Proiezione di una curva su una superficie TriMesh lungo la direzione data.
-EGK_EXPORT bool ProjectCurveOnSurfTm( const ICurve& crCrv, const ISurfTriMesh& tmSurf, const Vector3d& vtDir, double dLinTol,
-                                      PNT5AXVECTOR& vPt5ax) ;
+EGK_EXPORT bool ProjectCurveOnSurfTm( const ICurve& crCrv, const ISurfTriMesh& tmSurf, const Vector3d& vtDir,
+                                      double dLinTol, double dMaxSegmLen, PNT5AXVECTOR& vPt5ax) ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 633161d..27d24a2 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -540,7 +540,7 @@ EXE_EXPORT bool ExeInvertCurve( const INTVECTOR& vIds) ;
 EXE_EXPORT bool ExeOffsetCurve( int nId, double dDist, int nType) ;
 EXE_EXPORT int  ExeOffsetCurveAdv( int nId, double dDist, int nType, int* pnCount, double dLinTol = 10 * EPS_SMALL) ;
 EXE_EXPORT int  ExeCurveMedialAxis( int nId) ;
-EXE_EXPORT bool ExeApproxCurve( int nId, int nApprType, double dLinTol) ;
+EXE_EXPORT bool ExeApproxCurve( int nId, int nApprType, double dLinTol, double dMaxSegmLen = INFINITO) ;
 EXE_EXPORT bool ExeProjectCurveOnPlane( int nId, const Point3d& ptOn, const Vector3d& vtN, int nRefType) ;
 EXE_EXPORT bool ExeChangeClosedCurveStart( int nId, double dU) ;
 EXE_EXPORT bool ExeChangeClosedCurveStartPoint( int nId, const Point3d& ptP, int nRefType) ;
@@ -592,7 +592,8 @@ EXE_EXPORT bool ExeMergeCurvesInCurveCompo( int nId, double dLinTol, bool bStart
 EXE_EXPORT bool ExeRemoveCurveCompoUndercutOnY( int nId, double dLinTol) ;
 EXE_EXPORT bool ExeChainCurvesInGroup( int nGroupId, const Point3d& ptNear, int nRefType) ;
 EXE_EXPORT bool ExeReorderCurvesInGroup( int nGroupId, const Point3d& ptNear, int nRefType) ;
-EXE_EXPORT bool ExeProjectCurveOnSurfTm( int nCurveId, int nSurfTmId, const Vector3d& vtDir, int nDestGrpId, double dLinTol, int nRefType) ;
+EXE_EXPORT bool ExeProjectCurveOnSurfTm( int nCurveId, int nSurfTmId, const Vector3d& vtDir, int nDestGrpId,
+                                         double dLinTol, double dMaxSegmLen, int nRefType) ;
 EXE_EXPORT int  ExeCurveGetVoronoi( int nId, int nDestGrpId, int nBound, int* pnCount) ;
 EXE_EXPORT int  ExeCurveGetMedialAxis( int nId, int nDestGrpId, int nSide, int* pnCount) ;
 EXE_EXPORT int  ExeCurveGetFatCurve( int nId, int nDestGrpId, double dRad, bool bSquareEnds, bool bSquareMids, int* pnCount) ;