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1 | -- Created on: 1991-07-19 |
| 2 | -- Created by: Isabelle GRIGNON |
| 3 | -- Copyright (c) 1991-1999 Matra Datavision |
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4 | -- Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | -- |
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6 | -- This file is part of Open CASCADE Technology software library. |
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7 | -- |
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8 | -- This library is free software; you can redistribute it and/or modify it under |
| 9 | -- the terms of the GNU Lesser General Public License version 2.1 as published |
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10 | -- by the Free Software Foundation, with special exception defined in the file |
| 11 | -- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 12 | -- distribution for complete text of the license and disclaimer of any warranty. |
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13 | -- |
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14 | -- Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | -- commercial license or contractual agreement. |
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16 | |
| 17 | private class MyRootFunction from CPnts |
| 18 | |
| 19 | inherits FunctionWithDerivative from math |
| 20 | |
| 21 | ---Purpose: Implements a function for the Newton algorithm to find the |
| 22 | -- solution of Integral(F) = L |
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23 | -- (compute Length and Derivative of the curve for Newton) |
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24 | |
| 25 | uses |
| 26 | MyGaussFunction from CPnts, |
| 27 | RealFunction from CPnts |
| 28 | |
| 29 | is |
| 30 | |
| 31 | Create returns MyRootFunction from CPnts; |
| 32 | ---C++: inline |
| 33 | |
| 34 | Init(me : in out; |
| 35 | F : RealFunction from CPnts; |
| 36 | D : Address from Standard; |
| 37 | Order : Integer); |
| 38 | ---Purpose: F is a pointer on a function D is a client data |
| 39 | -- Order is the order of integration to use |
| 40 | -- |
| 41 | |
| 42 | Init(me : in out; X0,L : Real); |
| 43 | ---Purpose: We want to solve Integral(X0,X,F(X,D)) = L |
| 44 | |
| 45 | Init(me : in out; X0,L,Tol : Real); |
| 46 | ---Purpose: We want to solve Integral(X0,X,F(X,D)) = L |
| 47 | -- with given tolerance |
| 48 | |
| 49 | Value(me:in out; X : Real; F : out Real) |
| 50 | ---Purpose: This is Integral(X0,X,F(X,D)) - L |
| 51 | returns Boolean |
| 52 | is static; |
| 53 | |
| 54 | Derivative(me :in out; X: Real; Df : out Real) |
| 55 | ---Purpose: This is F(X,D) |
| 56 | returns Boolean |
| 57 | is static; |
| 58 | |
| 59 | Values(me:in out; X : Real; F, Df : out Real) |
| 60 | returns Boolean |
| 61 | is static; |
| 62 | |
| 63 | fields |
| 64 | myFunction : MyGaussFunction from CPnts; |
| 65 | myX0 : Real; |
| 66 | myL : Real; |
| 67 | myOrder : Integer; |
| 68 | myTol : Real; -- rbv's modification |
| 69 | end MyRootFunction; |
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