include/opencascade/StdPrs_HLRPolyShape.hxx

0001 // Created on: 1995-09-19
0002 // Created by: Laurent PAINNOT
0003 // Copyright (c) 1995-1999 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 _StdPrs_HLRPolyShape_HeaderFile
0018 #define _StdPrs_HLRPolyShape_HeaderFile
0019
0020 #include <StdPrs_HLRShapeI.hxx>
0021
0022 //! Instantiates Prs3d_PolyHLRShape to define a display of a shape where hidden
0023 //! and visible lines are identified with respect to a given projection.
0024 //! StdPrs_HLRPolyShape works with a polyhedral simplification of the shape whereas
0025 //! StdPrs_HLRShape takes the shape itself into account.
0026 //! When you use StdPrs_HLRShape, you obtain an exact result, whereas, when you use StdPrs_HLRPolyShape,
0027 //! you reduce computation time but obtain polygonal segments.
0028 //! The polygonal algorithm is used.
0029 class StdPrs_HLRPolyShape : public StdPrs_HLRShapeI
0030 {
0031   DEFINE_STANDARD_RTTIEXT(StdPrs_HLRPolyShape, StdPrs_HLRShapeI)
0032 public:
0033
0034   //! Compute presentation for specified shape.
0035   Standard_EXPORT virtual void ComputeHLR (const Handle(Prs3d_Presentation)& thePrs,
0036                                            const TopoDS_Shape& theShape,
0037                                            const Handle(Prs3d_Drawer)& theDrawer,
0038                                            const Handle(Graphic3d_Camera)& theProjector) const Standard_OVERRIDE;
0039
0040 };
0041
0042 #endif // _StdPrs_HLRPolyShape_HeaderFile