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1 | -- Created on: 1996-10-14 |
2 | -- Created by: Jeannine PANTIATICI |
3 | -- Copyright (c) 1996-1999 Matra Datavision |
4 | -- Copyright (c) 1999-2012 OPEN CASCADE SAS |
5 | -- |
6 | -- The content of this file is subject to the Open CASCADE Technology Public |
7 | -- License Version 6.5 (the "License"). You may not use the content of this file |
8 | -- except in compliance with the License. Please obtain a copy of the License |
9 | -- at http://www.opencascade.org and read it completely before using this file. |
10 | -- |
11 | -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
12 | -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
13 | -- |
14 | -- The Original Code and all software distributed under the License is |
15 | -- distributed on an "AS IS" basis, without warranty of any kind, and the |
16 | -- Initial Developer hereby disclaims all such warranties, including without |
17 | -- limitation, any warranties of merchantability, fitness for a particular |
18 | -- purpose or non-infringement. Please see the License for the specific terms |
19 | -- and conditions governing the rights and limitations under the License. |
20 | |
7fd59977 |
21 | |
22 | class SimpleApprox from AdvApprox |
23 | |
24 | ---Purpose: Approximate a function on an intervall [First,Last] |
25 | -- The result is a simple polynomial whose degree is as low as |
26 | -- possible to satisfy the required tolerance and the |
27 | -- maximum degree. The maximum error and the averrage error |
28 | -- resulting from approximating the function by the polynomial are computed |
29 | |
30 | |
31 | uses HArray1OfReal from TColStd, |
32 | HArray2OfReal from TColStd, |
33 | Array1OfReal from TColStd, |
34 | Array1OfInteger from TColStd, |
35 | Shape from GeomAbs, |
36 | Vector from math, |
37 | EvaluatorFunction from AdvApprox, |
38 | JacobiPolynomial from PLib |
39 | |
40 | raises |
41 | |
42 | OutOfRange from Standard, |
43 | ConstructionError from Standard |
44 | |
45 | is |
46 | Create(TotalDimension : Integer ; |
47 | TotalNumSS : Integer ; |
48 | Continuity : Shape from GeomAbs ; |
49 | WorkDegree : Integer ; |
50 | NbGaussPoints : Integer ; |
51 | JacobiBase : JacobiPolynomial from PLib; |
52 | Func : EvaluatorFunction from AdvApprox) |
53 | |
54 | returns SimpleApprox from AdvApprox |
55 | raises ConstructionError; |
56 | |
57 | Perform(me:in out ; |
58 | LocalDimension : Array1OfInteger from TColStd; |
59 | LocalTolerancesArray: Array1OfReal from TColStd ; |
60 | First : Real ; |
61 | Last : Real ; |
62 | MaxDegree : Integer) |
63 | raises ConstructionError; |
64 | ---Purpose: Constructs approximator tool. |
65 | -- |
66 | -- Warning: |
67 | -- the Func should be valid reference to object of type |
68 | -- inherited from class EvaluatorFunction from Approx |
69 | -- with life time longer than that of the approximator tool; |
70 | -- |
71 | |
72 | IsDone(me) |
73 | returns Boolean; |
74 | |
75 | Degree (me) |
76 | returns Integer; |
77 | |
78 | Coefficients (me) |
79 | ---Purpose: returns the coefficients in the Jacobi Base |
80 | returns HArray1OfReal from TColStd; |
81 | |
82 | FirstConstr (me) |
83 | ---Purpose: returns the constraints at First |
84 | returns HArray2OfReal from TColStd; |
85 | |
86 | LastConstr (me) |
87 | ---Purpose: returns the constraints at Last |
88 | returns HArray2OfReal from TColStd; |
89 | |
90 | SomTab (me) |
91 | returns HArray1OfReal from TColStd; |
92 | |
93 | DifTab (me) |
94 | returns HArray1OfReal from TColStd; |
95 | |
96 | MaxError (me; Index : Integer) |
97 | returns Real; |
98 | |
99 | AverageError (me; Index : Integer) |
100 | returns Real; |
101 | |
102 | Dump(me; o: in out OStream); |
103 | ---Purpose: display information on approximation |
104 | |
105 | fields |
106 | |
107 | myTotalNumSS : Integer; |
108 | myTotalDimension : Integer; |
109 | myNbGaussPoints : Integer; |
110 | myWorkDegree : Integer; |
111 | myNivConstr : Integer ; |
112 | myJacPol : JacobiPolynomial from PLib; |
113 | myTabPoints : HArray1OfReal from TColStd; |
114 | myTabWeights : HArray2OfReal from TColStd; |
115 | myEvaluator : Address from Standard; |
116 | myDegree : Integer; |
117 | myCoeff : HArray1OfReal from TColStd; |
118 | myFirstConstr : HArray2OfReal from TColStd; |
119 | myLastConstr : HArray2OfReal from TColStd; |
120 | mySomTab : HArray1OfReal from TColStd; |
121 | myDifTab : HArray1OfReal from TColStd; |
122 | myMaxError : HArray1OfReal from TColStd; |
123 | myAverageError : HArray1OfReal from TColStd; |
124 | done : Boolean; |
125 | |
126 | end SimpleApprox; |
127 | |
128 | |