1 // Created on: 1993-01-09
2 // Created by: CKY / Contract Toubro-Larsen ( Kiran )
3 // Copyright (c) 1993-1999 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 _IGESGeom_Plane_HeaderFile
18 #define _IGESGeom_Plane_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Standard_Real.hxx>
25 #include <IGESData_IGESEntity.hxx>
26 #include <Standard_Integer.hxx>
27 #include <Standard_Boolean.hxx>
28 class IGESData_IGESEntity;
34 DEFINE_STANDARD_HANDLE(IGESGeom_Plane, IGESData_IGESEntity)
36 //! defines IGESPlane, Type <108> Form <-1,0,1>
37 //! in package IGESGeom
38 //! A plane entity can be used to represent unbounded plane,
39 //! as well as bounded portion of a plane. In either of the
40 //! above cases the plane is defined within definition space
41 //! by means of coefficients A, B, C, D where at least one of
42 //! A, B, C is non-zero and A * XT + B * YT + C * ZT = D
43 class IGESGeom_Plane : public IGESData_IGESEntity
49 Standard_EXPORT IGESGeom_Plane();
51 Standard_EXPORT void Init (const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D, const Handle(IGESData_IGESEntity)& aCurve, const gp_XYZ& attach, const Standard_Real aSize);
53 //! Changes FormNumber (indicates the Type of Bound :
54 //! 0 no Bound, 1 (External) Bound, -1 Hole)
55 //! Remark that Init keeps this Value and must be consistent :
56 //! aCurve Null if FormNumber = 0, Non-Null else
57 //! Error if not in ranges [0-1] or [10-12]
58 Standard_EXPORT void SetFormNumber (const Standard_Integer form);
60 Standard_EXPORT void Equation (Standard_Real& A, Standard_Real& B, Standard_Real& C, Standard_Real& D) const;
62 Standard_EXPORT void TransformedEquation (Standard_Real& A, Standard_Real& B, Standard_Real& C, Standard_Real& D) const;
64 //! returns True if there exists a bounding curve
65 Standard_EXPORT Standard_Boolean HasBoundingCurve() const;
67 //! returns True if bounding curve exists and bounded portion is negative
68 Standard_EXPORT Standard_Boolean HasBoundingCurveHole() const;
70 //! returns Optional Bounding Curve, can be positive (normal clipping)
71 //! or negative (hole) according to Form Number
72 Standard_EXPORT Handle(IGESData_IGESEntity) BoundingCurve() const;
74 //! returns True if SymbolSize() > 0, False if SymbolSize() = 0
75 Standard_EXPORT Standard_Boolean HasSymbolAttach() const;
77 //! returns (X, Y, Z) if symbol exists else returns (0, 0, 0)
78 Standard_EXPORT gp_Pnt SymbolAttach() const;
80 //! returns (X, Y, Z) if symbol exists after applying Transf. Matrix
81 //! else returns (0, 0, 0)
82 Standard_EXPORT gp_Pnt TransformedSymbolAttach() const;
84 //! Size of optional display symbol
85 Standard_EXPORT Standard_Real SymbolSize() const;
90 DEFINE_STANDARD_RTTIEXT(IGESGeom_Plane,IGESData_IGESEntity)
104 Handle(IGESData_IGESEntity) theCurve;
106 Standard_Real theSize;
117 #endif // _IGESGeom_Plane_HeaderFile