diff --git a/EGkSurfBezier.h b/EGkSurfBezier.h
index eaffd02..391f9ee 100644
--- a/EGkSurfBezier.h
+++ b/EGkSurfBezier.h
@@ -73,6 +73,8 @@ class __declspec( novtable) ISurfBezier : public ISurf
       virtual bool IncreaseUV( double& dU, double dx, bool bUOrV, double* dUVCopy = nullptr, bool bModifyOrig = true) const = 0 ;
       virtual bool IncreaseUV( Point3d& ptUV, Vector3d vtH , Point3d* ptUVCopy, bool bModifyOrig) const = 0 ;
       virtual bool GetLoops( ICRVCOMPOPOVECTOR& vCC, bool bLineOrBezier, int nEdge = -1) const = 0 ;
+      virtual bool MakeUniform( ISurfFlatRegion** sfr, DBLVECTOR& vU, DBLVECTOR& vV, double dScaleU, double dScaleV, bool& bRescaled, bool bRetry) const = 0 ;
+      virtual bool OnWhichEdge( double u0, double u1, double v0, double v1, int& nEdge, Point3d ptToAssign) const = 0 ;
 } ;
 
 //-----------------------------------------------------------------------------