include/opencascade/IGESGeom_Direction.hxx

0001 // Created on: 1993-01-09
0002 // Created by: CKY / Contract Toubro-Larsen ( Kiran )
0003 // Copyright (c) 1993-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _IGESGeom_Direction_HeaderFile
0018 #define _IGESGeom_Direction_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_Type.hxx>
0022
0023 #include <gp_XYZ.hxx>
0024 #include <IGESData_IGESEntity.hxx>
0025 class gp_Vec;
0026
0027 //! defines IGESDirection, Type <123> Form <0>
0028 //! in package IGESGeom
0029 //! A direction entity is a non-zero vector in Euclidean 3-space
0030 //! that is defined by its three components (direction ratios)
0031 //! with respect to the coordinate axes. If x, y, z are the
0032 //! direction ratios then (x^2 + y^2 + z^2) > 0
0033 class IGESGeom_Direction : public IGESData_IGESEntity
0034 {
0035
0036 public:
0037   Standard_EXPORT IGESGeom_Direction();
0038
0039   //! This method is used to set the fields of the class
0040   //! Direction
0041   //! - aDirection : Direction ratios, Z is 0 by default
0042   Standard_EXPORT void Init(const gp_XYZ& aDirection);
0043
0044   Standard_EXPORT gp_Vec Value() const;
0045
0046   //! returns the Direction value after applying Transformation matrix
0047   Standard_EXPORT gp_Vec TransformedValue() const;
0048
0049   DEFINE_STANDARD_RTTIEXT(IGESGeom_Direction, IGESData_IGESEntity)
0050
0051 private:
0052   gp_XYZ theDirection;
0053 };
0054
0055 #endif // _IGESGeom_Direction_HeaderFile