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1 | // Created on: 1998-07-14 |
| 2 | // Created by: data exchange team |
| 3 | // Copyright (c) 1998-1999 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 _ShapeConstruct_Curve_HeaderFile |
| 18 | #define _ShapeConstruct_Curve_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 22 | #include <Standard_Handle.hxx> |
| 23 | |
| 24 | #include <Standard_Boolean.hxx> |
| 25 | #include <Standard_Real.hxx> |
| 26 | #include <TColStd_HArray1OfReal.hxx> |
| 27 | #include <TColStd_Array1OfReal.hxx> |
| 28 | class Geom_Curve; |
| 29 | class gp_Pnt; |
| 30 | class Geom2d_Curve; |
| 31 | class gp_Pnt2d; |
| 32 | class Geom_BSplineCurve; |
| 33 | class Geom2d_BSplineCurve; |
| 34 | |
| 35 | |
| 36 | //! Adjusts curve to have start and end points at the given |
| 37 | //! points (currently works on lines and B-Splines only) |
| 38 | class ShapeConstruct_Curve |
| 39 | { |
| 40 | public: |
| 41 | |
| 42 | DEFINE_STANDARD_ALLOC |
| 43 | |
| 44 | |
| 45 | //! Modifies a curve in order to make its bounds confused with |
| 46 | //! given points. |
| 47 | //! Works only on lines and B-Splines, returns True in this case, |
| 48 | //! else returns False. |
| 49 | //! For line considers both bounding points, for B-Splines only |
| 50 | //! specified. |
| 51 | //! |
| 52 | //! Warning : Does not check if curve should be reversed |
| 53 | Standard_EXPORT Standard_Boolean AdjustCurve (const Handle(Geom_Curve)& C3D, const gp_Pnt& P1, const gp_Pnt& P2, const Standard_Boolean take1 = Standard_True, const Standard_Boolean take2 = Standard_True) const; |
| 54 | |
| 55 | //! Modifies a curve in order to make its bounds confused with |
| 56 | //! given points. |
| 57 | //! Works only on lines and B-Splines. |
| 58 | //! |
| 59 | //! For lines works as previous method, B-Splines are segmented |
| 60 | //! at the given values and then are adjusted to the points. |
| 61 | Standard_EXPORT Standard_Boolean AdjustCurveSegment (const Handle(Geom_Curve)& C3D, const gp_Pnt& P1, const gp_Pnt& P2, const Standard_Real U1, const Standard_Real U2) const; |
| 62 | |
| 63 | //! Modifies a curve in order to make its bounds confused with |
| 64 | //! given points. |
| 65 | //! Works only on lines and B-Splines, returns True in this case, |
| 66 | //! else returns False. |
| 67 | //! |
| 68 | //! For line considers both bounding points, for B-Splines only |
| 69 | //! specified. |
| 70 | //! |
| 71 | //! Warning : Does not check if curve should be reversed |
| 72 | Standard_EXPORT Standard_Boolean AdjustCurve2d (const Handle(Geom2d_Curve)& C2D, const gp_Pnt2d& P1, const gp_Pnt2d& P2, const Standard_Boolean take1 = Standard_True, const Standard_Boolean take2 = Standard_True) const; |
| 73 | |
| 74 | //! Converts a curve of any type (only part from first to last) |
| 75 | //! to bspline. The method of conversion depends on the type |
| 76 | //! of original curve: |
| 77 | //! BSpline -> C.Segment(first,last) |
| 78 | //! Bezier and Line -> GeomConvert::CurveToBSplineCurve(C).Segment(first,last) |
| 79 | //! Conic and Other -> Approx_Curve3d(C[first,last],prec,C1,9,1000) |
| 80 | Standard_EXPORT Handle(Geom_BSplineCurve) ConvertToBSpline (const Handle(Geom_Curve)& C, const Standard_Real first, const Standard_Real last, const Standard_Real prec) const; |
| 81 | |
| 82 | //! Converts a curve of any type (only part from first to last) |
| 83 | //! to bspline. The method of conversion depends on the type |
| 84 | //! of original curve: |
| 85 | //! BSpline -> C.Segment(first,last) |
| 86 | //! Bezier and Line -> GeomConvert::CurveToBSplineCurve(C).Segment(first,last) |
| 87 | //! Conic and Other -> Approx_Curve2d(C[first,last],prec,C1,9,1000) |
| 88 | Standard_EXPORT Handle(Geom2d_BSplineCurve) ConvertToBSpline (const Handle(Geom2d_Curve)& C, const Standard_Real first, const Standard_Real last, const Standard_Real prec) const; |
| 89 | |
| 90 | Standard_EXPORT static Standard_Boolean FixKnots (Handle(TColStd_HArray1OfReal)& knots); |
| 91 | |
| 92 | //! Fix bspline knots to ensure that there is enough |
| 93 | //! gap between neighbouring values |
| 94 | //! Returns True if something fixed (by shifting knot) |
| 95 | Standard_EXPORT static Standard_Boolean FixKnots (TColStd_Array1OfReal& knots); |
| 96 | |
| 97 | |
| 98 | |
| 99 | |
| 100 | protected: |
| 101 | |
| 102 | |
| 103 | |
| 104 | |
| 105 | |
| 106 | private: |
| 107 | |
| 108 | |
| 109 | |
| 110 | |
| 111 | |
| 112 | }; |
| 113 | |
| 114 | |
| 115 | |
| 116 | |
| 117 | |
| 118 | |
| 119 | |
| 120 | #endif // _ShapeConstruct_Curve_HeaderFile |
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