0031687: Draw Harness, ViewerTest - extend command vrenderparams with option updating...
[occt.git] / src / ShapeConstruct / ShapeConstruct_Curve.hxx
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42cf5bc1 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>
28class Geom_Curve;
29class gp_Pnt;
30class Geom2d_Curve;
31class gp_Pnt2d;
32class Geom_BSplineCurve;
33class 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)
38class ShapeConstruct_Curve
39{
40public:
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
100protected:
101
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105
106private:
107
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111
112};
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119
120#endif // _ShapeConstruct_Curve_HeaderFile