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79 lines
2.8 KiB
Plaintext
Executable File
79 lines
2.8 KiB
Plaintext
Executable File
-- Created on: 1998-11-10
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-- Created by: Igor FEOKTISTOV
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-- Copyright (c) 1998-1999 Matra Datavision
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-- Copyright (c) 1999-2012 OPEN CASCADE SAS
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--
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-- The content of this file is subject to the Open CASCADE Technology Public
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-- License Version 6.5 (the "License"). You may not use the content of this file
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-- except in compliance with the License. Please obtain a copy of the License
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-- at http://www.opencascade.org and read it completely before using this file.
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--
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-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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--
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-- The Original Code and all software distributed under the License is
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-- distributed on an "AS IS" basis, without warranty of any kind, and the
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-- Initial Developer hereby disclaims all such warranties, including without
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-- limitation, any warranties of merchantability, fitness for a particular
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-- purpose or non-infringement. Please see the License for the specific terms
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-- and conditions governing the rights and limitations under the License.
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class ElementsOfRefMatrix from FEmTool inherits FunctionSet from math
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---Purpose: this class describes the functions needed for
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-- calculating matrix elements of RefMatrix for linear
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-- criteriums (Tension, Flexsion and Jerk).
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-- Each function from set gives value Pi(u)'*Pj(u)' or
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-- Pi(u)''*Pj(u)'' or Pi(u)'''*Pj(u)''' for each i and j,
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-- where Pi(u) is i-th basis function of expansion and
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-- (') means derivative.
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uses
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Vector from math,
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Base from PLib
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raises
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ConstructionError from Standard
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is
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Create(TheBase : Base from PLib; DerOrder : Integer from Standard)
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-- DerOrder is order of derivative (1, 2, 3)
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returns ElementsOfRefMatrix from FEmTool
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raises ConstructionError from Standard;
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-- if DerOrder is not valid
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NbVariables(me)
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---Purpose: returns the number of variables of the function.
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-- It is supposed that NbVariables = 1.
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returns Integer;
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NbEquations(me)
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---Purpose: returns the number of equations of the function.
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returns Integer;
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Value(me: in out; X: Vector; F: out Vector)
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---Purpose: computes the values <F> of the functions for the
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-- variable <X>.
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-- returns True if the computation was done successfully,
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-- False otherwise.
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-- F contains results only for i<=j in following order:
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-- P0*P0, P0*P1, P0*P2... P1*P1, P1*P2,... (upper triangle of
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-- matrix {PiPj})
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returns Boolean;
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fields
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myBase : Base from PLib;
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myDerOrder : Integer;
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myNbEquations : Integer;
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end ElementsOfRefMatrix;
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