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1 | // Created on: 1992-03-26 |
| 2 | // Created by: Laurent BUCHARD |
| 3 | // Copyright (c) 1992-1999 Matra Datavision |
| 4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
| 5 | // |
| 6 | // This file is part of Open CASCADE Technology software library. |
| 7 | // |
| 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 |
| 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. |
| 13 | // |
| 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
| 16 | |
| 17 | #ifndef _IntImpParGen_ImpTool_HeaderFile |
| 18 | #define _IntImpParGen_ImpTool_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 22 | #include <Standard_Handle.hxx> |
| 23 | |
| 24 | #include <Standard_Real.hxx> |
| 25 | class gp_Pnt2d; |
| 26 | class gp_Vec2d; |
| 27 | |
| 28 | |
| 29 | //! Template class for an implicit curve. |
| 30 | class IntImpParGen_ImpTool |
| 31 | { |
| 32 | public: |
| 33 | |
| 34 | DEFINE_STANDARD_ALLOC |
| 35 | |
| 36 | |
| 37 | Standard_EXPORT gp_Pnt2d Value (const Standard_Real U) const; |
| 38 | |
| 39 | Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T) const; |
| 40 | |
| 41 | Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T, gp_Vec2d& N) const; |
| 42 | |
| 43 | //! Computes the value of the signed distance between |
| 44 | //! the point P and the implicit curve. |
| 45 | Standard_EXPORT Standard_Real Distance (const gp_Pnt2d& P) const; |
| 46 | |
| 47 | //! Computes the Gradient of the Signed Distance |
| 48 | //! between a point and the implicit curve, at the |
| 49 | //! point P. |
| 50 | Standard_EXPORT gp_Vec2d GradDistance (const gp_Pnt2d& P) const; |
| 51 | |
| 52 | //! Returns the parameter U of the point on the |
| 53 | //! implicit curve corresponding to the point P. |
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54 | //! The correspondence between P and the point P(U) on |
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55 | //! the implicit curve must be coherent with the way |
| 56 | //! of determination of the signed distance. |
| 57 | Standard_EXPORT Standard_Real FindParameter (const gp_Pnt2d& P) const; |
| 58 | |
| 59 | |
| 60 | |
| 61 | |
| 62 | protected: |
| 63 | |
| 64 | |
| 65 | |
| 66 | |
| 67 | |
| 68 | private: |
| 69 | |
| 70 | |
| 71 | |
| 72 | |
| 73 | |
| 74 | }; |
| 75 | |
| 76 | |
| 77 | |
| 78 | |
| 79 | |
| 80 | |
| 81 | |
| 82 | #endif // _IntImpParGen_ImpTool_HeaderFile |
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