-- File:	FEmTool_LinearTension.cdl
-- Created:	Thu Sep 18 09:34:40 1997
-- Author:	Philippe MANGIN
--		<pmn@sgi29>
---Copyright:	 Matra Datavision 1997


class LinearTension from FEmTool inherits ElementaryCriterion from FEmTool

	---Purpose: Criterium of LinearTension To Hermit-Jacobi  elements      

uses
   Vector  from  math, 
   Matrix  from  math,  
   Shape   from GeomAbs,
   HArray2OfReal  from  TColStd, 
   HArray2OfInteger  from TColStd   
    
raises 
  NotImplemented,   
  DomainError   
    
is
    Create(WorkDegree      : Integer ; 
           ConstraintOrder : Shape from GeomAbs)   
    returns LinearTension from FEmTool;        
     
    DependenceTable(me)  
    returns  HArray2OfInteger  from TColStd   
    is  redefined;  
    
    Value  (me  : mutable)  
    returns  Real  is  redefined; 
     
    Hessian(me  :  mutable ;  
	    Dimension1  :  Integer; 
	    Dimension2  :  Integer;
            H  :  out  Matrix  from  math)
     raises  DomainError -- If DependenceTable(Dimension1,Dimension2) is False 
     is  redefined;  
   
    Gradient(me  : mutable;   
	     Dimension  :  Integer;
             G  :  out  Vector  from  math) 
    is redefined;

fields 
RefMatrix  :  Matrix  from  math;  
myOrder    :  Integer; 
end LinearTension;