1 // Created on: 1995-03-07
2 // Created by: Laurent PAINNOT
3 // Copyright (c) 1995-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _Poly_Polygon3D_HeaderFile
18 #define _Poly_Polygon3D_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Standard_Real.hxx>
24 #include <TColgp_Array1OfPnt.hxx>
25 #include <TColStd_HArray1OfReal.hxx>
26 #include <Standard_Transient.hxx>
27 #include <TColStd_Array1OfReal.hxx>
28 #include <Standard_Integer.hxx>
29 #include <Standard_Boolean.hxx>
30 class Standard_NullObject;
34 DEFINE_STANDARD_HANDLE(Poly_Polygon3D, Standard_Transient)
36 //! This class Provides a polygon in 3D space. It is generally an approximate representation of a curve.
37 //! A Polygon3D is defined by a table of nodes. Each node is
38 //! a 3D point. If the polygon is closed, the point of closure is
39 //! repeated at the end of the table of nodes.
40 //! If the polygon is an approximate representation of a curve,
41 //! you can associate with each of its nodes the value of the
42 //! parameter of the corresponding point on the curve.
43 class Poly_Polygon3D : public Standard_Transient
49 //! onstructs a 3D polygon defined by the table of points, Nodes.
50 Standard_EXPORT Poly_Polygon3D(const TColgp_Array1OfPnt& Nodes);
52 //! Constructs a 3D polygon defined by
53 //! the table of points, Nodes, and the parallel table of
54 //! parameters, Parameters, where each value of the table
55 //! Parameters is the parameter of the corresponding point
56 //! on the curve approximated by the constructed polygon.
58 //! Both the Nodes and Parameters tables must have the
59 //! same bounds. This property is not checked at construction time.
60 Standard_EXPORT Poly_Polygon3D(const TColgp_Array1OfPnt& Nodes, const TColStd_Array1OfReal& Parameters);
62 //! Creates a copy of current polygon
63 Standard_EXPORT virtual Handle(Poly_Polygon3D) Copy() const;
65 //! Returns the deflection of this polygon
66 Standard_EXPORT Standard_Real Deflection() const;
68 //! Sets the deflection of this polygon to D. See more on deflection in Poly_Polygon2D
69 Standard_EXPORT void Deflection (const Standard_Real D);
71 //! Returns the number of nodes in this polygon.
72 //! Note: If the polygon is closed, the point of closure is
73 //! repeated at the end of its table of nodes. Thus, on a closed
74 //! triangle the function NbNodes returns 4.
75 Standard_Integer NbNodes() const;
77 //! Returns the table of nodes for this polygon.
78 Standard_EXPORT const TColgp_Array1OfPnt& Nodes() const;
80 //! Returns the table of the parameters associated with each node in this polygon.
81 //! HasParameters function checks if parameters are associated with the nodes of this polygon.
82 Standard_EXPORT Standard_Boolean HasParameters() const;
84 //! Returns true if parameters are associated with the nodes
86 Standard_EXPORT const TColStd_Array1OfReal& Parameters() const;
88 //! Returns the table of the parameters associated with each node in this polygon.
89 //! ChangeParameters function returnes the array as shared. Therefore if the table is selected by
90 //! reference you can, by simply modifying it, directly modify
91 //! the data structure of this polygon.
92 Standard_EXPORT TColStd_Array1OfReal& ChangeParameters() const;
97 DEFINE_STANDARD_RTTIEXT(Poly_Polygon3D,Standard_Transient)
107 Standard_Real myDeflection;
108 TColgp_Array1OfPnt myNodes;
109 Handle(TColStd_HArray1OfReal) myParameters;
115 #include <Poly_Polygon3D.lxx>
121 #endif // _Poly_Polygon3D_HeaderFile