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_Type.hxx>
21 #include <Standard_Transient.hxx>
22 #include <TColgp_Array1OfPnt.hxx>
23 #include <TColStd_Array1OfReal.hxx>
24 #include <TColStd_HArray1OfReal.hxx>
26 DEFINE_STANDARD_HANDLE(Poly_Polygon3D, Standard_Transient)
28 //! This class Provides a polygon in 3D space. It is generally an approximate representation of a curve.
29 //! A Polygon3D is defined by a table of nodes. Each node is
30 //! a 3D point. If the polygon is closed, the point of closure is
31 //! repeated at the end of the table of nodes.
32 //! If the polygon is an approximate representation of a curve,
33 //! you can associate with each of its nodes the value of the
34 //! parameter of the corresponding point on the curve.
35 class Poly_Polygon3D : public Standard_Transient
39 //! Constructs a 3D polygon with specific number of nodes.
40 Standard_EXPORT Poly_Polygon3D (const Standard_Integer theNbNodes,
41 const Standard_Boolean theHasParams);
43 //! Constructs a 3D polygon defined by the table of points, Nodes.
44 Standard_EXPORT Poly_Polygon3D(const TColgp_Array1OfPnt& Nodes);
46 //! Constructs a 3D polygon defined by
47 //! the table of points, Nodes, and the parallel table of
48 //! parameters, Parameters, where each value of the table
49 //! Parameters is the parameter of the corresponding point
50 //! on the curve approximated by the constructed polygon.
52 //! Both the Nodes and Parameters tables must have the
53 //! same bounds. This property is not checked at construction time.
54 Standard_EXPORT Poly_Polygon3D(const TColgp_Array1OfPnt& Nodes, const TColStd_Array1OfReal& Parameters);
56 //! Creates a copy of current polygon
57 Standard_EXPORT virtual Handle(Poly_Polygon3D) Copy() const;
59 //! Returns the deflection of this polygon
60 Standard_Real Deflection() const { return myDeflection; }
62 //! Sets the deflection of this polygon. See more on deflection in Poly_Polygon2D
63 void Deflection (const Standard_Real theDefl) { myDeflection = theDefl; }
65 //! Returns the number of nodes in this polygon.
66 //! Note: If the polygon is closed, the point of closure is
67 //! repeated at the end of its table of nodes. Thus, on a closed
68 //! triangle the function NbNodes returns 4.
69 Standard_Integer NbNodes() const { return myNodes.Length(); }
71 //! Returns the table of nodes for this polygon.
72 const TColgp_Array1OfPnt& Nodes() const { return myNodes; }
74 //! Returns the table of nodes for this polygon.
75 TColgp_Array1OfPnt& ChangeNodes() { return myNodes; }
77 //! Returns the table of the parameters associated with each node in this polygon.
78 //! HasParameters function checks if parameters are associated with the nodes of this polygon.
79 Standard_Boolean HasParameters() const { return !myParameters.IsNull(); }
81 //! Returns true if parameters are associated with the nodes
83 const TColStd_Array1OfReal& Parameters() const { return myParameters->Array1(); }
85 //! Returns the table of the parameters associated with each node in this polygon.
86 //! ChangeParameters function returnes the array as shared. Therefore if the table is selected by
87 //! reference you can, by simply modifying it, directly modify
88 //! the data structure of this polygon.
89 TColStd_Array1OfReal& ChangeParameters() const { return myParameters->ChangeArray1(); }
91 //! Dumps the content of me into the stream
92 Standard_EXPORT virtual void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const;
94 DEFINE_STANDARD_RTTIEXT(Poly_Polygon3D,Standard_Transient)
98 Standard_Real myDeflection;
99 TColgp_Array1OfPnt myNodes;
100 Handle(TColStd_HArray1OfReal) myParameters;
104 #endif // _Poly_Polygon3D_HeaderFile