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1 | // Created on: 1993-10-06 |
2 | // Created by: Bruno DUMORTIER |
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 _GeomFill_BezierCurves_HeaderFile |
18 | #define _GeomFill_BezierCurves_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <GeomFill_FillingStyle.hxx> |
25 | class Geom_BezierSurface; |
26 | class Standard_ConstructionError; |
27 | class Geom_BezierCurve; |
28 | |
29 | |
30 | //! This class provides an algorithm for constructing a Bezier surface filled from |
31 | //! contiguous Bezier curves which form its boundaries. |
32 | //! The algorithm accepts two, three or four Bezier curves |
33 | //! as the boundaries of the target surface. |
34 | //! A range of filling styles - more or less rounded, more or less flat - is available. |
35 | //! A BezierCurves object provides a framework for: |
36 | //! - defining the boundaries, and the filling style of the surface |
37 | //! - implementing the construction algorithm |
38 | //! - consulting the result. |
39 | //! Warning |
40 | //! Some problems may show up with rational curves. |
41 | class GeomFill_BezierCurves |
42 | { |
43 | public: |
44 | |
45 | DEFINE_STANDARD_ALLOC |
46 | |
47 | |
48 | //! Constructs an empty framework for building a Bezier |
49 | //! surface from contiguous Bezier curves. |
50 | //! You use the Init function to define the boundaries of the surface. |
51 | Standard_EXPORT GeomFill_BezierCurves(); |
52 | |
53 | //! Constructs a framework for building a Bezier surface |
54 | //! from the four contiguous Bezier curves, C1, C2, C3 and C4 |
55 | //! Raises Standard_ConstructionError if the curves are not contiguous. |
56 | Standard_EXPORT GeomFill_BezierCurves(const Handle(Geom_BezierCurve)& C1, const Handle(Geom_BezierCurve)& C2, const Handle(Geom_BezierCurve)& C3, const Handle(Geom_BezierCurve)& C4, const GeomFill_FillingStyle Type); |
57 | |
58 | //! Constructs a framework for building a Bezier surface |
59 | //! from the three contiguous Bezier curves, C1, C2 and C3 |
60 | //! Raises Standard_ConstructionError if the curves are not contiguous. |
61 | Standard_EXPORT GeomFill_BezierCurves(const Handle(Geom_BezierCurve)& C1, const Handle(Geom_BezierCurve)& C2, const Handle(Geom_BezierCurve)& C3, const GeomFill_FillingStyle Type); |
62 | |
63 | //! Constructs a framework for building a Bezier surface |
64 | //! from the two contiguous Bezier curves, C1 and C2 |
65 | //! Raises Standard_ConstructionError if the curves are not contiguous. |
66 | Standard_EXPORT GeomFill_BezierCurves(const Handle(Geom_BezierCurve)& C1, const Handle(Geom_BezierCurve)& C2, const GeomFill_FillingStyle Type); |
67 | |
68 | //! if the curves cannot be joined |
69 | Standard_EXPORT void Init (const Handle(Geom_BezierCurve)& C1, const Handle(Geom_BezierCurve)& C2, const Handle(Geom_BezierCurve)& C3, const Handle(Geom_BezierCurve)& C4, const GeomFill_FillingStyle Type); |
70 | |
71 | //! if the curves cannot be joined |
72 | Standard_EXPORT void Init (const Handle(Geom_BezierCurve)& C1, const Handle(Geom_BezierCurve)& C2, const Handle(Geom_BezierCurve)& C3, const GeomFill_FillingStyle Type); |
73 | |
74 | //! Initializes or reinitializes this algorithm with two, three, |
75 | //! or four curves - C1, C2, C3, and C4 - and Type, one |
76 | //! of the following filling styles: |
77 | //! - GeomFill_Stretch - the style with the flattest patch |
78 | //! - GeomFill_Coons - a rounded style of patch with |
79 | //! less depth than that of Curved |
80 | //! - GeomFill_Curved - the style with the most rounded patch. |
81 | //! Exceptions |
82 | //! Standard_ConstructionError if the curves are not contiguous. |
83 | Standard_EXPORT void Init (const Handle(Geom_BezierCurve)& C1, const Handle(Geom_BezierCurve)& C2, const GeomFill_FillingStyle Type); |
84 | |
85 | //! Returns the Bezier surface resulting from the |
86 | //! computation performed by this algorithm. |
87 | const Handle(Geom_BezierSurface)& Surface() const; |
88 | |
89 | |
90 | |
91 | |
92 | protected: |
93 | |
94 | |
95 | |
96 | |
97 | |
98 | private: |
99 | |
100 | |
101 | |
102 | Handle(Geom_BezierSurface) mySurface; |
103 | |
104 | |
105 | }; |
106 | |
107 | |
108 | #include <GeomFill_BezierCurves.lxx> |
109 | |
110 | |
111 | |
112 | |
113 | |
114 | #endif // _GeomFill_BezierCurves_HeaderFile |