--- File:	FairCurve_DistributionOfEnergy.cdl
-- Created:	Mon Jan 22 15:11:20 1996
-- Author:	Philippe MANGIN
--		<pmn@sgi29>
---Copyright:	 Matra Datavision 1996


deferred class DistributionOfEnergy from  FairCurve 
     inherits  FunctionSet from math

	---Purpose: Abstract class to use the Energy of an FairCurve

uses  Vector        from math, 
      FunctionSet   from math,
      HArray1OfReal  from TColStd,
      HArray1OfPnt2d from TColgp   



is

---    redefined methods

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

    returns Integer is redefined;

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

    returns Integer is redefined;

    
---    new methods
    Initialize( BSplOrder : Integer;
                FlatKnots :  HArray1OfReal;
		Poles     :  HArray1OfPnt2d;
    	    	DerivativeOrder : Integer;
    	    	NbValAux  : Integer = 0);
		
    SetDerivativeOrder(me :in out; DerivativeOrder : Integer); 
		    

fields

MyBSplOrder   : Integer is protected;
MyFlatKnots   : HArray1OfReal is  protected;
MyPoles       : HArray1OfPnt2d  is protected;
MyDerivativeOrder : Integer is protected;
MyNbVar       : Integer is protected;
MyNbEqua      : Integer is protected;
MyNbValAux    : Integer is protected;


end DistributionOfEnergy ;