0023850: TDataStd_ByteArray is too slow on storage on disk

[occt.git] / src / PLib / PLib_Base.cdl

-- Created on: 1997-10-22
-- Created by: Philippe MANGIN / Sergey SOKOLOV
-- 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.


deferred class Base from PLib inherits TShared from MMgt 

---Purpose: To work with different polynomial's Bases 

uses 
    Array1OfReal from TColStd
  
is  
    ToCoefficients (me ; Dimension, Degree : Integer;
                    CoeffinBase  : Array1OfReal from TColStd ;
                    Coefficients : out Array1OfReal from TColStd) 
---Purpose:
--   Convert the polynomial P(t) in the canonical base.
    is deferred;

    D0 (me : mutable; U : Real;  
    	BasisValue : out Array1OfReal from TColStd) 
---Purpose: Compute the values of the basis functions in u
--     
    is deferred;
 
    D1 (me : mutable; U : Real;  
      	BasisValue : out Array1OfReal from TColStd; 
     	BasisD1    : out Array1OfReal from TColStd)
---Purpose: Compute the values and the derivatives values of
--          the basis functions in u
    is deferred;
  
    D2 (me : mutable; U : Real;  
    	BasisValue : out Array1OfReal from TColStd; 
	BasisD1    : out Array1OfReal from TColStd; 
    	BasisD2    : out Array1OfReal from TColStd) 
---Purpose: Compute the values and the derivatives values of
--          the basis functions in u
    is deferred;

    D3 (me : mutable; U : Real;  
    	BasisValue : out Array1OfReal from TColStd; 
	BasisD1    : out Array1OfReal from TColStd; 
    	BasisD2    : out Array1OfReal from TColStd; 
        BasisD3    : out Array1OfReal from TColStd)
---Purpose: Compute the values and the derivatives values of
--          the basis functions in u
    is deferred; 

    WorkDegree (me)  returns Integer    
    --- Purpose: returns WorkDegree   
    is  deferred; 

    ReduceDegree ( me ; Dimension ,  MaxDegree  : Integer ;  Tol : Real ; 
                   BaseCoeff :  in  out  Real;
                   NewDegree : out Integer ;
                   MaxError  : out Real)
                            
---Purpose:
--   Compute NewDegree <= MaxDegree so that MaxError is lower
--   than Tol. 
--   MaxError can be greater than Tol if it is not possible
--   to find a NewDegree <= MaxDegree.
--   In this case NewDegree = MaxDegree
-- 

    is  deferred;

end Base;