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1 | -- Created on: 1993-01-26 |
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 |
9 | -- under the terms of the GNU Lesser General Public 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. |
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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 | package Approx |
18 | |
19 | ---Purpose: Tis package provides algorithms approximating a set of |
20 | -- points or curves with the possibility of dividing into |
21 | -- one or many bezier curves. |
22 | -- It also provides an instantiation for approximating |
23 | -- a continous function f(t) into one or many curves. |
24 | |
25 | uses AdvApprox, |
26 | AppCont, |
27 | AppParCurves, |
28 | math, |
29 | gp, |
30 | GeomAbs, |
31 | Geom, |
32 | Geom2d, |
33 | Adaptor3d, |
34 | Adaptor2d, |
35 | TColStd, |
36 | TColGeom, |
37 | TColgp, |
38 | TCollection, |
39 | Standard, |
40 | StdFail |
41 | |
42 | |
43 | is |
44 | |
45 | enumeration ParametrizationType is |
46 | ChordLength, |
47 | Centripetal, |
48 | IsoParametric |
49 | end; |
50 | |
51 | enumeration Status is |
52 | PointsAdded, |
53 | NoPointsAdded, |
54 | NoApproximation |
55 | end; |
56 | |
57 | deferred generic class TheLineTool; ---Template |
58 | ---Purpose: This template is different from the one of AppParCurves. |
59 | -- In this case, it is possible to insert new points |
60 | -- during the approximation with ComputeLine. |
61 | |
62 | |
63 | |
64 | --------------------------------------------- |
65 | ---Algorithms for Bezier curves construction: |
66 | --------------------------------------------- |
67 | |
68 | |
69 | generic class ComputeLine, MyGradient; |
70 | ---Purpose: Approximate a MultiLine with a cutting. |
71 | |
72 | generic class ComputeCLine, MyLeastSquare; |
73 | ---Purpose: Approximate a continous MultiLine with a cutting. |
74 | -- The Tool of the line is the tool from AppCont. |
75 | |
76 | |
77 | generic class ComputeCSurface, MySLeastSquare; |
78 | ---Purpose: Approximate a continous Surface with or without cutting. |
79 | -- The tool is the tool of AppCont. |
80 | |
81 | |
82 | |
83 | |
84 | ---------------------------------------------- |
85 | ---Algorithms for BSpline curves construction: |
86 | ---------------------------------------------- |
87 | |
88 | |
89 | generic class BSplComputeLine, MyBSplGradient, MyGradientbis; |
90 | |
91 | ---------------------------------------------- |
92 | ---Algorithms for BSpline Surface construction: |
93 | ---------------------------------------------- |
94 | class SweepApproximation; |
95 | deferred class SweepFunction; |
96 | ----------------------------------------------------------------- |
97 | --- Transformation of connecting MultiCurves into a MultiBSpCurve |
98 | ----------------------------------------------------------------- |
99 | |
100 | |
101 | class MCurvesToBSpCurve; |
102 | |
103 | ------------------------------------------------ |
104 | ---Algorithms for PCurve approximation: |
105 | ------------------------------------------------ |
106 | class CurveOnSurface; |
107 | class Curve3d; |
108 | class Curve2d; |
109 | ------------------------------------------------ |
110 | ---Algorithms for PCurve approximation: |
111 | ------------------------------------------------ |
112 | class CurvilinearParameter; |
113 | class CurvlinFunc; |
114 | -------------------------- |
115 | --- instantiate classes: |
116 | -------------------------- |
117 | |
118 | class SequenceOfHArray1OfReal instantiates Sequence from TCollection |
119 | (HArray1OfReal from TColStd); |
120 | |
121 | |
122 | ----------------------------------------------------------------- |
123 | --- the folowing classes approximate a continous function f(t) in |
124 | --- one or many bezier curves. |
125 | ----------------------------------------------------------------- |
126 | |
127 | class FitAndDivide instantiates ComputeCLine from Approx |
128 | (Function from AppCont, FunctionTool from AppCont); |
129 | |
130 | class FitAndDivide2d instantiates ComputeCLine from Approx |
131 | (Function2d from AppCont, FunctionTool2d from AppCont); |
132 | |
133 | class SameParameter from Approx ; |
134 | ---Purpose: this makes a 3D curve from Adaptor3d and |
135 | -- a curve on surface to check and build a 2D |
136 | -- BSpline curve that has the same parameterisation |
137 | -- as the 3D curve. |
138 | class Array1OfAdHSurface instantiates Array1 from TCollection |
139 | (HSurface from Adaptor3d) ; |
140 | class HArray1OfAdHSurface instantiates HArray1 from TCollection |
141 | (HSurface from Adaptor3d, Array1OfAdHSurface) ; |
142 | class Array1OfGTrsf2d instantiates Array1 from TCollection |
143 | (GTrsf2d from gp) ; |
144 | |
145 | class HArray1OfGTrsf2d instantiates HArray1 from TCollection |
146 | (GTrsf2d from gp, Array1OfGTrsf2d) ; |
147 | |
148 | -- class ApproxPoints from Approx ; |
149 | -- class ApproxPoints from Approx ; |
150 | ---Purpose: |
151 | -- this approximates a series of points |
152 | -- Boundary conditions can be given as well |
153 | -- a given parameterisation |
154 | -- |
155 | |
156 | end Approx; |