0023948: Wrong intersection between a surface of revolution and a plane.

[occt.git] / src / Geom2dLProp / Geom2dLProp_FuncCurNul.cdl

-- Created on: 1994-09-02
-- Created by: Yves FRICAUD
-- Copyright (c) 1994-1999 Matra Datavision
-- Copyright (c) 1999-2014 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.

private class FuncCurNul from Geom2dLProp inherits FunctionWithDerivative from math
	---Purpose: Function used to find the inflections in 2d. 

uses
    Curve from Geom2d,
    Vec2d from gp,
    Pnt2d from gp,
    Dir2d from gp,
    Curve2dTool from Geom2dLProp
    
is
    Create ( C : Curve from Geom2d) returns FuncCurNul from Geom2dLProp;
    
    Value (me : in out; X : Real; F : out Real)
    	---Purpose: Returns the value for the variable <X>.
    returns Boolean;
    
    Derivative(me : in out; X : Real; D : out Real)
        ---Purpose: Returns the derivative for the variable <X>
    returns Boolean;

    Values(me : in out ; X  : Real; F  : out Real; D  : out Real)    
    	---Purpose: Returns the value of the function and the derivative
    	--          for the variable <X>.
    returns Boolean;    

fields
    theCurve : Curve from Geom2d;
    
end FuncCurNul;