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1 | // Created on: 1995-06-06 |
2 | // Created by: Jean Yves LEBEY |
3 | // Copyright (c) 1995-1999 Matra Datavision |
4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
5 | // |
6 | // This file is part of Open CASCADE Technology software library. |
7 | // |
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 |
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. |
13 | // |
14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
16 | |
17 | #ifndef _BRepApprox_MyGradientOfTheComputeLineBezierOfApprox_HeaderFile |
18 | #define _BRepApprox_MyGradientOfTheComputeLineBezierOfApprox_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <AppParCurves_MultiCurve.hxx> |
25 | #include <math_Vector.hxx> |
26 | #include <Standard_Real.hxx> |
27 | #include <Standard_Boolean.hxx> |
28 | #include <Standard_Integer.hxx> |
29 | #include <AppParCurves_HArray1OfConstraintCouple.hxx> |
30 | class Standard_OutOfRange; |
31 | class StdFail_NotDone; |
32 | class BRepApprox_TheMultiLineOfApprox; |
33 | class BRepApprox_TheMultiLineToolOfApprox; |
34 | class BRepApprox_ParLeastSquareOfMyGradientOfTheComputeLineBezierOfApprox; |
35 | class BRepApprox_ResConstraintOfMyGradientOfTheComputeLineBezierOfApprox; |
36 | class BRepApprox_ParFunctionOfMyGradientOfTheComputeLineBezierOfApprox; |
37 | class BRepApprox_Gradient_BFGSOfMyGradientOfTheComputeLineBezierOfApprox; |
38 | class AppParCurves_MultiCurve; |
39 | |
40 | |
41 | |
42 | class BRepApprox_MyGradientOfTheComputeLineBezierOfApprox |
43 | { |
44 | public: |
45 | |
46 | DEFINE_STANDARD_ALLOC |
47 | |
48 | |
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49 | //! Tries to minimize the sum (square(||Qui - Bi*Pi||)) |
50 | //! where Pui describe the approximating Bezier curves'Poles |
51 | //! and Qi the MultiLine points with a parameter ui. |
52 | //! In this algorithm, the parameters ui are the unknowns. |
53 | //! The tolerance required on this sum is given by Tol. |
54 | //! The desired degree of the resulting curve is Deg. |
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55 | Standard_EXPORT BRepApprox_MyGradientOfTheComputeLineBezierOfApprox(const BRepApprox_TheMultiLineOfApprox& SSP, const Standard_Integer FirstPoint, const Standard_Integer LastPoint, const Handle(AppParCurves_HArray1OfConstraintCouple)& TheConstraints, math_Vector& Parameters, const Standard_Integer Deg, const Standard_Real Tol3d, const Standard_Real Tol2d, const Standard_Integer NbIterations = 200); |
56 | |
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57 | //! returns True if all has been correctly done. |
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58 | Standard_EXPORT Standard_Boolean IsDone() const; |
59 | |
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60 | //! returns all the Bezier curves approximating the |
61 | //! MultiLine SSP after minimization of the parameter. |
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62 | Standard_EXPORT AppParCurves_MultiCurve Value() const; |
63 | |
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64 | //! returns the difference between the old and the new |
65 | //! approximation. |
66 | //! An exception is raised if NotDone. |
67 | //! An exception is raised if Index<1 or Index>NbParameters. |
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68 | Standard_EXPORT Standard_Real Error (const Standard_Integer Index) const; |
69 | |
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70 | //! returns the maximum difference between the old and the |
71 | //! new approximation. |
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72 | Standard_EXPORT Standard_Real MaxError3d() const; |
73 | |
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74 | //! returns the maximum difference between the old and the |
75 | //! new approximation. |
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76 | Standard_EXPORT Standard_Real MaxError2d() const; |
77 | |
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78 | //! returns the average error between the old and the |
79 | //! new approximation. |
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80 | Standard_EXPORT Standard_Real AverageError() const; |
81 | |
82 | |
83 | |
84 | |
85 | protected: |
86 | |
87 | |
88 | |
89 | |
90 | |
91 | private: |
92 | |
93 | |
94 | |
95 | AppParCurves_MultiCurve SCU; |
96 | math_Vector ParError; |
97 | Standard_Real AvError; |
98 | Standard_Real MError3d; |
99 | Standard_Real MError2d; |
100 | Standard_Boolean Done; |
101 | |
102 | |
103 | }; |
104 | |
105 | |
106 | |
107 | |
108 | |
109 | |
110 | |
111 | #endif // _BRepApprox_MyGradientOfTheComputeLineBezierOfApprox_HeaderFile |