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1 | // Created on: 1993-12-07 |
| 2 | // Created by: Modelistation |
| 3 | // Copyright (c) 1993-1999 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 _BRepGProp_EdgeTool_HeaderFile |
| 18 | #define _BRepGProp_EdgeTool_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 22 | #include <Standard_Handle.hxx> |
| 23 | |
| 24 | #include <Standard_Real.hxx> |
| 25 | #include <Standard_Integer.hxx> |
| 26 | #include <GeomAbs_Shape.hxx> |
| 27 | #include <TColStd_Array1OfReal.hxx> |
| 28 | class Standard_OutOfRange; |
| 29 | class BRepAdaptor_Curve; |
| 30 | class gp_Pnt; |
| 31 | class gp_Vec; |
| 32 | |
| 33 | |
| 34 | //! Provides the required methods to instantiate |
| 35 | //! CGProps from GProp with a Curve from BRepAdaptor. |
| 36 | class BRepGProp_EdgeTool |
| 37 | { |
| 38 | public: |
| 39 | |
| 40 | DEFINE_STANDARD_ALLOC |
| 41 | |
| 42 | |
| 43 | |
| 44 | //! Returns the parametric value of the start point of |
| 45 | //! the curve. The curve is oriented from the start point |
| 46 | //! to the end point. |
| 47 | Standard_EXPORT static Standard_Real FirstParameter (const BRepAdaptor_Curve& C); |
| 48 | |
| 49 | |
| 50 | //! Returns the parametric value of the end point of |
| 51 | //! the curve. The curve is oriented from the start point |
| 52 | //! to the end point. |
| 53 | Standard_EXPORT static Standard_Real LastParameter (const BRepAdaptor_Curve& C); |
| 54 | |
| 55 | |
| 56 | //! Returns the number of Gauss points required to do |
| 57 | //! the integration with a good accuracy using the |
| 58 | //! Gauss method. For a polynomial curve of degree n |
| 59 | //! the maxima of accuracy is obtained with an order |
| 60 | //! of integration equal to 2*n-1. |
| 61 | Standard_EXPORT static Standard_Integer IntegrationOrder (const BRepAdaptor_Curve& C); |
| 62 | |
| 63 | //! Returns the point of parameter U on the loaded curve. |
| 64 | Standard_EXPORT static gp_Pnt Value (const BRepAdaptor_Curve& C, const Standard_Real U); |
| 65 | |
| 66 | |
| 67 | //! Returns the point of parameter U and the first derivative |
| 68 | //! at this point. |
| 69 | Standard_EXPORT static void D1 (const BRepAdaptor_Curve& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1); |
| 70 | |
| 71 | //! Returns the number of intervals for continuity |
| 72 | //! <S>. May be one if Continuity(me) >= <S> |
| 73 | Standard_EXPORT static Standard_Integer NbIntervals (const BRepAdaptor_Curve& C, const GeomAbs_Shape S); |
| 74 | |
| 75 | //! Stores in <T> the parameters bounding the intervals |
| 76 | //! of continuity <S>. |
| 77 | //! |
| 78 | //! The array must provide enough room to accomodate |
| 79 | //! for the parameters. i.e. T.Length() > NbIntervals() |
| 80 | Standard_EXPORT static void Intervals (const BRepAdaptor_Curve& C, TColStd_Array1OfReal& T, const GeomAbs_Shape S); |
| 81 | |
| 82 | |
| 83 | |
| 84 | |
| 85 | protected: |
| 86 | |
| 87 | |
| 88 | |
| 89 | |
| 90 | |
| 91 | private: |
| 92 | |
| 93 | |
| 94 | |
| 95 | |
| 96 | |
| 97 | }; |
| 98 | |
| 99 | |
| 100 | |
| 101 | |
| 102 | |
| 103 | |
| 104 | |
| 105 | #endif // _BRepGProp_EdgeTool_HeaderFile |
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