--- /dev/null
+// Created on: 2002-08-02
+// Created by: Alexander KARTOMIN (akm)
+// Copyright (c) 2002-2014 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef _LProp3d_CurveTool_HeaderFile
+#define _LProp3d_CurveTool_HeaderFile
+
+#include <Standard.hxx>
+#include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
+
+#include <Standard_Real.hxx>
+#include <Standard_Integer.hxx>
+class Adaptor3d_HCurve;
+class gp_Pnt;
+class gp_Vec;
+
+
+
+class LProp3d_CurveTool
+{
+public:
+
+ DEFINE_STANDARD_ALLOC
+
+
+ //! Computes the point <P> of parameter <U> on the HCurve <C>.
+ Standard_EXPORT static void Value (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P);
+
+ //! Computes the point <P> and first derivative <V1> of
+ //! parameter <U> on the HCurve <C>.
+ Standard_EXPORT static void D1 (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1);
+
+ //! Computes the point <P>, the first derivative <V1> and second
+ //! derivative <V2> of parameter <U> on the HCurve <C>.
+ Standard_EXPORT static void D2 (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2);
+
+ //! Computes the point <P>, the first derivative <V1>, the
+ //! second derivative <V2> and third derivative <V3> of
+ //! parameter <U> on the HCurve <C>.
+ Standard_EXPORT static void D3 (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3);
+
+ //! returns the order of continuity of the HCurve <C>.
+ //! returns 1 : first derivative only is computable
+ //! returns 2 : first and second derivative only are computable.
+ //! returns 3 : first, second and third are computable.
+ Standard_EXPORT static Standard_Integer Continuity (const Handle(Adaptor3d_HCurve)& C);
+
+ //! returns the first parameter bound of the HCurve.
+ Standard_EXPORT static Standard_Real FirstParameter (const Handle(Adaptor3d_HCurve)& C);
+
+ //! returns the last parameter bound of the HCurve.
+ //! FirstParameter must be less than LastParamenter.
+ Standard_EXPORT static Standard_Real LastParameter (const Handle(Adaptor3d_HCurve)& C);
+
+
+
+
+protected:
+
+
+
+
+
+private:
+
+
+
+
+
+};
+
+
+
+
+
+
+
+#endif // _LProp3d_CurveTool_HeaderFile