include/opencascade/Vrml_Separator.hxx

0001 // Created on: 1997-03-27
0002 // Created by: Alexander BRIVIN and Dmitry TARASOV
0003 // Copyright (c) 1997-1999 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 _Vrml_Separator_HeaderFile
0018 #define _Vrml_Separator_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Vrml_SeparatorRenderCulling.hxx>
0025 #include <Standard_Boolean.hxx>
0026 #include <Standard_OStream.hxx>
0027
0028
0029 //! defines a Separator node of VRML specifying group properties.
0030 //! This group node performs a push (save) of the traversal state before traversing its children
0031 //! and a pop (restore) after traversing them. This isolates the separator's children from the
0032 //! rest of the scene graph. A separator can include lights, cameras, coordinates, normals,
0033 //! bindings, and all other properties.
0034 //! Separators can also perform render culling. Render culling skips over traversal of the
0035 //! separator's children if they are not going to be rendered, based on the comparison of the
0036 //! separator's bounding box with the current view volume. Culling is controlled by the
0037 //! renderCulling field. These are set to AUTO by default, allowing the implementation to
0038 //! decide whether or not to cull.
0039 class Vrml_Separator
0040 {
0041 public:
0042
0043   DEFINE_STANDARD_ALLOC
0044
0045
0046   Standard_EXPORT Vrml_Separator(const Vrml_SeparatorRenderCulling aRenderCulling);
0047
0048   Standard_EXPORT Vrml_Separator();
0049
0050   Standard_EXPORT void SetRenderCulling (const Vrml_SeparatorRenderCulling aRenderCulling);
0051
0052   Standard_EXPORT Vrml_SeparatorRenderCulling RenderCulling() const;
0053
0054   Standard_EXPORT Standard_OStream& Print (Standard_OStream& anOStream);
0055
0056
0057
0058
0059 protected:
0060
0061
0062
0063
0064
0065 private:
0066
0067
0068
0069   Vrml_SeparatorRenderCulling myRenderCulling;
0070   Standard_Boolean myFlagPrint;
0071
0072
0073 };
0074
0075
0076
0077
0078
0079
0080
0081 #endif // _Vrml_Separator_HeaderFile