1 // Created on: 1996-12-05
2 // Created by: Jean-Pierre COMBE/Odile Olivier
3 // Copyright (c) 1996-1999 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 _AIS_TangentRelation_HeaderFile
18 #define _AIS_TangentRelation_HeaderFile
20 #include <AIS_Relation.hxx>
22 DEFINE_STANDARD_HANDLE(AIS_TangentRelation, AIS_Relation)
24 //! A framework to display tangency constraints between
25 //! two or more Interactive Objects of the datum type.
26 //! The datums are normally faces or edges.
27 class AIS_TangentRelation : public AIS_Relation
29 DEFINE_STANDARD_RTTIEXT(AIS_TangentRelation, AIS_Relation)
32 //! TwoFacesTangent or TwoEdgesTangent relation
33 //! Constructs an object to display tangency constraints.
34 //! This object is defined by the first shape aFShape, the
35 //! second shape aSShape, the plane aPlane and the index anExternRef.
36 //! aPlane serves as an optional axis.
37 //! anExternRef set to 0 indicates that there is no relation.
38 Standard_EXPORT AIS_TangentRelation(const TopoDS_Shape& aFShape, const TopoDS_Shape& aSShape, const Handle(Geom_Plane)& aPlane, const Standard_Integer anExternRef = 0);
40 //! Returns the external reference for tangency.
41 //! The values are as follows:
42 //! - 0 - there is no connection;
43 //! - 1 - there is a connection to the first shape;
44 //! - 2 - there is a connection to the second shape.
45 //! This reference is defined at construction time.
46 Standard_EXPORT Standard_Integer ExternRef();
48 //! Sets the external reference for tangency, aRef.
49 //! The values are as follows:
50 //! - 0 - there is no connection;
51 //! - 1 - there is a connection to the first shape;
52 //! - 2 - there is a connection to the second shape.
53 //! This reference is initially defined at construction time.
54 Standard_EXPORT void SetExternRef (const Standard_Integer aRef);
58 Standard_EXPORT void Compute (const Handle(PrsMgr_PresentationManager3d)& aPresentationManager, const Handle(Prs3d_Presentation)& aPresentation, const Standard_Integer aMode = 0) Standard_OVERRIDE;
60 Standard_EXPORT void ComputeSelection (const Handle(SelectMgr_Selection)& aSelection, const Standard_Integer aMode) Standard_OVERRIDE;
62 Standard_EXPORT void ComputeTwoFacesTangent (const Handle(Prs3d_Presentation)& aPresentation);
64 Standard_EXPORT void ComputeTwoEdgesTangent (const Handle(Prs3d_Presentation)& aPresentation);
68 Standard_Real myLength;
69 Standard_Integer myExternRef;
73 #endif // _AIS_TangentRelation_HeaderFile