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1 | -- Created on: 1993-04-22 |
| 2 | -- Created by: Laurent PAINNOT |
| 3 | -- Copyright (c) 1993-1999 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 | generic class LeastSquare from AppCont(MultiLine as any; |
| 18 | LineTool as any) |
| 19 | ---as TheToolLine(MultiLine) |
| 20 | |
| 21 | ---Purpose: |
| 22 | |
| 23 | |
| 24 | uses Matrix from math, |
| 25 | Vector from math, |
| 26 | Constraint from AppParCurves, |
| 27 | MultiCurve from AppParCurves |
| 28 | |
| 29 | |
| 30 | raises NotDone from StdFail, |
| 31 | OutOfRange from Standard, |
| 32 | DimensionError from Standard |
| 33 | |
| 34 | |
| 35 | |
| 36 | is |
| 37 | |
| 38 | Create(SSP: MultiLine; U0, U1: Real; FirstCons, LastCons: Constraint; |
| 39 | Deg: Integer; NbPoints: Integer = 24) |
| 40 | ---Purpose: given a continous MultiLine, this algorithm computes |
| 41 | -- the approximation into Bezier curves. |
| 42 | -- NbPoints points are taken on the initial MultiLine for |
| 43 | -- minimizing the surface between the MultiLine and the |
| 44 | -- Bezier curves doing the approximation. |
| 45 | -- The first point will be the point of parameter U0 with |
| 46 | -- a constraint FirstCons. |
| 47 | -- The last point will be the point of parameter U1 with |
| 48 | -- a constraint LastCons. |
| 49 | |
| 50 | returns LeastSquare from AppCont |
| 51 | raises DimensionError from Standard; |
| 52 | |
| 53 | |
| 54 | |
| 55 | IsDone(me) |
| 56 | ---Purpose: returns True if all has been correctly done. |
| 57 | |
| 58 | returns Boolean |
| 59 | is static; |
| 60 | |
| 61 | |
| 62 | Value(me: in out) |
| 63 | ---Purpose: returns the result of the approximation, i.e. a |
| 64 | -- MultiCurve. |
| 65 | -- An exception is raised if NotDone. |
| 66 | ---C++: return const & |
| 67 | |
| 68 | returns MultiCurve from AppParCurves |
| 69 | raises NotDone from StdFail |
| 70 | is static; |
| 71 | |
| 72 | |
| 73 | NbBColumns(me; SSP: MultiLine) |
| 74 | ---Purpose: is internally used by the constuctor. |
| 75 | |
| 76 | returns Integer |
| 77 | is static protected; |
| 78 | |
| 79 | |
| 80 | Error(me; F: in out Real; MaxE3d, MaxE2d: in out Real) |
| 81 | ---Purpose: F is the sum of the square errors at each of the |
| 82 | -- NbPoints of the MultiLine. |
| 83 | -- MaxE3d is the maximum 3d value of these errors. |
| 84 | -- MaxE2d is the maximum 2d value of these errors. |
| 85 | -- An exception is raised if NotDone. |
| 86 | |
| 87 | raises NotDone from StdFail |
| 88 | is static; |
| 89 | |
| 90 | |
| 91 | |
| 92 | fields |
| 93 | |
| 94 | Done: Boolean; |
| 95 | SCU: MultiCurve from AppParCurves; |
| 96 | Degre: Integer; |
| 97 | Nbdiscret: Integer; |
| 98 | nbP: Integer; |
| 99 | nbP2d: Integer; |
| 100 | Points: Matrix; |
| 101 | Poles: Matrix; |
| 102 | myParam: Vector; |
| 103 | VB: Matrix; |
| 104 | |
| 105 | end LeastSquare from AppCont; |
| 106 | |
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