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1 | -- Created on: 1993-08-18 |
2 | -- Created by: Laurent BUCHARD |
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 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 | generic class QuadricCurveExactInter from IntCurveSurface ( |
18 | TheSurface as any; |
19 | TheSurfaceTool as any; |
20 | TheCurve as any; |
21 | TheCurveTool as any) |
22 | |
23 | |
24 | ---Purpose: --------------------------------------------------------- |
25 | -- -- |
26 | -- find a root (u,v,w) from a starting point (w0) of the problem :-- |
27 | -- Q(X(w),Y(w),Z(w)) = 0 -- |
28 | -- -- |
29 | -- where Q(X,Y,Z) = 0 is the implicit expression of a quadric -- |
30 | -- and (X(w),Y(w),Z(w)) the point of parameter w on a parametric -- |
31 | -- curve. -- |
32 | ---------------------------------------------------------------------- |
33 | |
34 | |
35 | uses |
36 | Quadric from IntSurf, |
37 | SequenceOfReal from TColStd |
38 | |
39 | ------------------------------------------------------------ |
40 | class TheQuadCurvFunc instantiates QuadricCurveFunc from IntCurveSurface ( |
41 | Quadric from IntSurf, |
42 | TheCurve, |
43 | TheCurveTool); |
44 | |
45 | ---Purpose: Provides the signed distance function : Q(w) |
46 | -- and its first derivative dQ(w)/dw |
47 | ------------------------------------------------------------ |
48 | |
49 | is |
50 | |
51 | Create(S: TheSurface; C: TheCurve) |
52 | ---Purpose: |
53 | returns QuadricCurveExactInter from IntCurveSurface; |
54 | |
55 | |
56 | IsDone(me) |
57 | ---Purpose: |
58 | returns Boolean from Standard |
59 | is static; |
60 | |
61 | |
62 | NbRoots(me) |
63 | ---Purpose: |
64 | returns Integer from Standard |
65 | is static; |
66 | |
67 | |
68 | Root(me; Index: Integer from Standard) |
69 | ---Purpose: |
70 | returns Real from Standard |
71 | is static; |
72 | |
73 | |
74 | NbIntervals(me) |
75 | ---Purpose: |
76 | returns Integer from Standard |
77 | is static; |
78 | |
79 | |
80 | Intervals(me; Index: Integer from Standard; |
81 | U1,U2: out Real from Standard) |
82 | ---Purpose: U1 and U2 are the parameters of |
83 | -- a segment on the curve. |
84 | is static; |
85 | |
86 | |
87 | |
88 | fields |
89 | |
90 | nbpnts : Integer from Standard; |
91 | pnts : SequenceOfReal from TColStd; |
92 | nbintv : Integer from Standard; |
93 | intv : SequenceOfReal from TColStd; |
94 | |
95 | end QuadricCurveExactInter; |