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1 | -- Created on: 1997-08-22 |
2 | -- Created by: Jeannine PANCIATICI, Sergey SOKOLOV |
3 | -- Copyright (c) 1997-1999 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 | class CurvilinearParameter from Approx |
18 | |
19 | ---Purpose: Approximation of a Curve to make its parameter be its |
20 | -- curvilinear abscissa |
21 | -- If the curve is a curve on a surface S, C2D is the corresponding Pcurve, |
22 | -- we considere the curve is given by its representation S(C2D(u)) |
23 | -- If the curve is a curve on 2 surfaces S1 and S2 and C2D1 C2D2 are |
24 | -- the two corresponding Pcurve, we considere the curve is given |
25 | -- by its representation 1/2(S1(C2D1(u) + S2 (C2D2(u))) |
26 | |
27 | uses |
28 | Shape from GeomAbs, |
29 | HSurface from Adaptor3d, |
30 | HCurve from Adaptor3d, |
31 | HCurve2d from Adaptor2d, |
32 | BSplineCurve from Geom, |
33 | BSplineCurve from Geom2d |
34 | |
35 | raises OutOfRange from Standard, |
36 | ConstructionError from Standard |
37 | |
38 | is |
39 | Create (C3D : HCurve from Adaptor3d; |
40 | Tol : Real; |
41 | Order : Shape from GeomAbs; |
42 | MaxDegree : Integer; |
43 | MaxSegments : Integer) |
44 | |
45 | returns CurvilinearParameter from Approx |
46 | ---Purpose : case of a free 3D curve |
47 | -- |
48 | raises ConstructionError; |
49 | -- If the length of the curve can't be computed or if the length is null |
50 | |
51 | Create (C2D : HCurve2d from Adaptor2d; |
52 | Surf : HSurface from Adaptor3d; |
53 | Tol : Real; |
54 | Order : Shape from GeomAbs; |
55 | MaxDegree : Integer; |
56 | MaxSegments : Integer) |
57 | returns CurvilinearParameter from Approx |
58 | ---Purpose : case of a curve on one surface |
59 | -- |
60 | raises ConstructionError; |
61 | -- If the length of the curve can't be computed or if the length is null |
62 | |
63 | Create (C2D1 : HCurve2d from Adaptor2d; |
64 | Surf1 : HSurface from Adaptor3d; |
65 | C2D2 : HCurve2d from Adaptor2d; |
66 | Surf2 : HSurface from Adaptor3d; |
67 | Tol : Real; |
68 | Order : Shape from GeomAbs; |
69 | MaxDegree : Integer; |
70 | MaxSegments : Integer) |
71 | returns CurvilinearParameter from Approx |
72 | ---Purpose : case of a curve on two surfaces |
73 | -- |
74 | raises ConstructionError; |
75 | -- If the length of the curve can't be computed or if the length is null |
76 | |
77 | IsDone(me) returns Boolean from Standard; |
78 | -- True if the approximation succeeded within the imposed |
79 | -- tolerances |
80 | |
81 | HasResult(me) returns Boolean from Standard; |
82 | -- True if the approximation did come out with a result that |
83 | -- is not NECESSARELY within the required tolerance |
84 | |
85 | Curve3d(me) returns BSplineCurve from Geom; |
86 | --- Purpose: returns the Bspline curve corresponding to the reparametrized 3D curve |
87 | |
88 | MaxError3d (me) returns Real; |
89 | --- Purpose: returns the maximum error on the reparametrized 3D curve |
90 | |
91 | Curve2d1(me) returns BSplineCurve from Geom2d; |
92 | ---Purpose: returns the BsplineCurve representing the reparametrized 2D curve on the |
93 | -- first surface (case of a curve on one or two surfaces) |
94 | |
95 | MaxError2d1(me) returns Real; |
96 | ---Purpose: returns the maximum error on the first reparametrized 2D curve |
97 | |
98 | Curve2d2(me) returns BSplineCurve from Geom2d; |
99 | ---Purpose: returns the BsplineCurve representing the reparametrized 2D curve on the |
100 | -- second surface (case of a curve on two surfaces) |
101 | |
102 | MaxError2d2(me) returns Real; |
103 | ---Purpose: returns the maximum error on the second reparametrized 2D curve |
104 | |
105 | Dump(me; o: in out OStream); |
106 | ---Purpose: print the maximum errors(s) |
107 | |
108 | ToleranceComputation(myclass; C2D : HCurve2d from Adaptor2d; S : HSurface from Adaptor3d; |
109 | MaxNumber : Integer; Tol : Real; TolV, TolW : out Real) |
110 | is private; |
111 | |
112 | fields |
113 | |
114 | myCase : Integer from Standard; |
115 | myDone : Boolean from Standard; |
116 | myHasResult : Boolean from Standard; |
117 | myCurve3d : BSplineCurve from Geom; |
118 | myMaxError3d : Real from Standard; |
119 | myCurve2d1 : BSplineCurve from Geom2d; |
120 | myMaxError2d1 : Real from Standard; |
121 | myCurve2d2 : BSplineCurve from Geom2d; |
122 | myMaxError2d2 : Real from Standard; |
123 | |
124 | end CurvilinearParameter; |