-- Created on: 1997-11-06
-- Created by: Roman BORISOV
-- Copyright (c) 1997-1999 Matra Datavision
-- Copyright (c) 1999-2012 OPEN CASCADE SAS
--
-- The content of this file is subject to the Open CASCADE Technology Public
-- License Version 6.5 (the "License"). You may not use the content of this file
-- except in compliance with the License. Please obtain a copy of the License
-- at http://www.opencascade.org and read it completely before using this file.
--
-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
--
-- The Original Code and all software distributed under the License is
-- distributed on an "AS IS" basis, without warranty of any kind, and the
-- Initial Developer hereby disclaims all such warranties, including without
-- limitation, any warranties of merchantability, fitness for a particular
-- purpose or non-infringement. Please see the License for the specific terms
-- and conditions governing the rights and limitations under the License.


private  class PrjFunc from ProjLib inherits  FunctionSetWithDerivatives from math

	---Purpose: 

uses   
    Vector from math,  
    Matrix from math, 
    CurvePtr  from  Adaptor3d,
    SurfacePtr  from  Adaptor3d,
    Pnt2d  from  gp 

raises  ConstructionError

is
    Create  (C: CurvePtr  from  Adaptor3d; FixVal:  Real  from  Standard;  S:  SurfacePtr  from  Adaptor3d; Fix: Integer)   
    returns  PrjFunc 
    raises  ConstructionError;

    NbVariables(me)
    	---Purpose: returns the number of variables of the function.

    returns Integer;
    
    NbEquations(me)
    	---Purpose: returns the number of equations of the function.

    returns Integer;
    
    Value(me: in out; X: Vector  from  math; F: out Vector  from  math)
    	---Purpose: computes the values <F> of the Functions for the 
    	--          variable <X>.
    	--          Returns True if the computation was done successfully, 
    	--          False otherwise.

    returns Boolean;
    
    Derivatives(me: in out; X: Vector  from  math; D: out Matrix  from  math)
    	---Purpose: returns the values <D> of the derivatives for the 
    	--          variable <X>.
    	--          Returns True if the computation was done successfully, 
    	--          False otherwise.

    returns Boolean;
    
    Values(me: in out; X: Vector  from  math; F: out Vector  from  math; D: out Matrix  from  math)
    	---Purpose: returns the values <F> of the functions and the derivatives
    	--          <D> for the variable <X>.
    	--          Returns True if the computation was done successfully, 
    	--          False otherwise.

    returns Boolean;
  
    Solution(me)  returns  Pnt2d  from  gp; 
    	---Purpose:  returns  point  on  surface

fields 

    myCurve      :  CurvePtr    from  Adaptor3d; 
    mySurface    :  SurfacePtr  from  Adaptor3d; 
    myt          :  Real        from  Standard;
    myU,  myV    :  Real        from  Standard;	
    myFix        :  Integer     from  Standard; 
    myNorm       :  Real        from  Standard;     
end PrjFunc;