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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; |
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