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1 | -- Created on: 1996-03-05 |
2 | -- Created by: Joelle CHAUVET |
3 | -- Copyright (c) 1996-1999 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 | |
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17 | -- Modified: Wed Jan 15 09:45:42 1997 |
18 | -- by: Joelle CHAUVET |
19 | -- G1135 : Approximation with criterion |
20 | -- class Criterion and enumeration CriterionType |
21 | -- G1134 : Approximation with regular cuttings |
22 | -- enumeration CriterionRepartition |
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23 | |
24 | |
25 | |
26 | package AdvApp2Var |
27 | |
28 | ---Purpose: This package provides algorithms to approximate a |
29 | -- function of 2 variables that can be multidimensional; |
30 | -- the result is a BSpline function with the required continuity |
31 | -- Warning: only one 3D BSpline for the moment |
32 | -- |
33 | |
34 | |
35 | |
36 | uses |
37 | gp, |
38 | Geom, |
39 | GeomAbs, |
40 | TColStd, |
41 | TColgp, |
42 | TColGeom, |
43 | TCollection, |
44 | AdvApprox, |
45 | Standard |
46 | |
47 | is |
48 | |
49 | enumeration CriterionType is |
50 | ---Purpose: influency of the criterion on cutting process |
51 | Absolute, |
52 | ---Purpose: cutting when criterion is not satisfied |
53 | -- desactivation of the compute of the error max |
54 | Relative |
55 | ---Purpose: cutting when error max is not good or if error |
56 | -- max is good and criterion is not satisfied |
57 | |
58 | end CriterionType; |
59 | |
60 | |
61 | enumeration CriterionRepartition is |
62 | ---Purpose: way of cutting process |
63 | Regular, |
64 | ---Purpose: all new cutting points at each step of cutting |
65 | -- process : (a+i(b-a)/N)i at step N, |
66 | -- (a+i(b-a)/(N+1))i at step N+1,... |
67 | -- where (a,b) is the global interval |
68 | Incremental |
69 | ---Purpose: add one new cutting point at each step |
70 | -- of cutting process |
71 | |
72 | end CriterionRepartition; |
73 | -- |
74 | -- |
75 | -- public classes |
76 | -- |
77 | -- |
78 | |
79 | class ApproxAFunc2Var from AdvApp2Var ; |
80 | ---Purpose: |
81 | -- this class approximates a given function of 2 variables |
82 | |
83 | imported EvaluatorFunc2Var ; |
84 | ---Purpose: |
85 | -- typedef void (*EvaluatorFunc2Var) ( |
86 | -- Standard_Integer * -- dimension |
87 | -- Standard_Real * -- first and last parameters in U |
88 | -- Standard_Real * -- first and last parameters in V |
89 | -- Standard_Integer * -- choice of constante, 1 for U, 2 for V |
90 | -- Standard_Real * -- value of constant parameter |
91 | -- Standard_Integer * -- number of parameters |
92 | -- Standard_Real * -- values of parameters |
93 | -- Standard_Integer * -- order of derivation in U |
94 | -- Standard_Integer * -- order of derivation in V |
95 | -- Standard_Real * -- evaluation |
96 | -- Standard_Integer * -- error code |
97 | -- ) ; |
98 | |
99 | deferred class Criterion from AdvApp2Var ; |
100 | ---Purpose: |
101 | -- this class contains a given criterion to be satisfied |
102 | |
103 | |
104 | -- |
105 | -- |
106 | -- private classes for Data |
107 | -- |
108 | -- |
109 | -- Basic Data |
110 | |
111 | class Context from AdvApp2Var; |
112 | ---Purpose : |
113 | -- contains all the parameters for approximation |
114 | -- ( tolerancy, computing option, ...) |
115 | -- |
116 | |
117 | class Node from AdvApp2Var; |
118 | ---Purpose : |
119 | -- used to store constraints on a (Ui,Vj) point |
120 | -- |
121 | |
122 | class Iso from AdvApp2Var; |
123 | ---Purpose : |
124 | -- used to store constraints on a line U = Ui or V = Vj |
125 | -- |
126 | |
127 | class Patch from AdvApp2Var; |
128 | ---Purpose : |
129 | -- used to store results on a domain [Ui,Ui+1]x[Vj,Vj+1] |
130 | -- |
131 | |
132 | class Strip from AdvApp2Var instantiates |
133 | Sequence from TCollection (Iso from AdvApp2Var); |
134 | ---Purpose : |
135 | -- set of constraints along a same type of Iso on the same level |
136 | |
137 | -- |
138 | -- |
139 | -- Structured Data |
140 | |
141 | class SequenceOfNode from AdvApp2Var instantiates |
142 | Sequence from TCollection (Node from AdvApp2Var); |
143 | class SequenceOfPatch from AdvApp2Var instantiates |
144 | Sequence from TCollection (Patch from AdvApp2Var); |
145 | class SequenceOfStrip from AdvApp2Var instantiates |
146 | Sequence from TCollection (Strip from AdvApp2Var); |
147 | |
148 | -- |
149 | -- |
150 | -- Final Data |
151 | |
152 | class Network from AdvApp2Var; |
153 | -- contains all the result patches and the associated parameters U and V |
154 | -- |
155 | |
156 | class Framework from AdvApp2Var; |
157 | -- contains all the constraints (Nodes and Isos) |
158 | -- |
159 | |
160 | |
161 | end AdvApp2Var; |
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