include/opencascade/DsgPrs_TangentPresentation.hxx

0001 // Created on: 1996-01-16
0002 // Created by: Jean-Pierre COMBE
0003 // Copyright (c) 1996-1999 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 _DsgPrs_TangentPresentation_HeaderFile
0018 #define _DsgPrs_TangentPresentation_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 #include <Prs3d_Drawer.hxx>
0024 #include <Prs3d_Presentation.hxx>
0025
0026 class gp_Pnt;
0027 class gp_Dir;
0028
0029 //! A framework to define display of tangents.
0030 class DsgPrs_TangentPresentation
0031 {
0032 public:
0033
0034   DEFINE_STANDARD_ALLOC
0035
0036
0037   //! Adds the point OffsetPoint, the direction aDirection
0038   //! and the length aLength to the presentation object aPresentation.
0039   //! The display attributes of the tangent are defined by
0040   //! the attribute manager aDrawer.
0041   Standard_EXPORT static void Add (const Handle(Prs3d_Presentation)& aPresentation, const Handle(Prs3d_Drawer)& aDrawer, const gp_Pnt& OffsetPoint, const gp_Dir& aDirection, const Standard_Real aLength);
0042
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0046 protected:
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0052 private:
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0057
0058 };
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0066 #endif // _DsgPrs_TangentPresentation_HeaderFile