1 // Created on: 2011-11-02
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2015 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #ifndef _OpenGl_Layer_Header
17 #define _OpenGl_Layer_Header
19 #include <NCollection_Sequence.hxx>
20 #include <NCollection_Array1.hxx>
22 #include <InterfaceGraphic_telem.hxx>
24 #include <OpenGl_BVHClipPrimitiveSet.hxx>
25 #include <OpenGl_BVHTreeSelector.hxx>
27 #include <Graphic3d_ZLayerSettings.hxx>
28 #include <OpenGl_GlCore11.hxx>
31 struct OpenGl_GlobalLayerSettings
37 //! Presentations list sorted within priorities.
42 //! Initializes associated priority list and layer properties
43 OpenGl_Layer (const Standard_Integer theNbPriorities = 11);
46 virtual ~OpenGl_Layer();
48 //! Returns settings of the layer object.
49 const Graphic3d_ZLayerSettings& LayerSettings() const { return myLayerSettings; };
51 //! Sets settings of the layer object.
52 void SetLayerSettings (const Graphic3d_ZLayerSettings& theSettings)
54 myLayerSettings = theSettings;
57 //! Returns true if theSetting is enabled for the layer.
58 const Standard_Boolean IsSettingEnabled (const Graphic3d_ZLayerSetting theSetting) const
60 return myLayerSettings.IsSettingEnabled (theSetting);
63 void Add (const OpenGl_Structure* theStruct,
64 const Standard_Integer thePriority,
65 Standard_Boolean isForChangePriority = Standard_False);
67 //! Remove structure and returns its priority, if the structure is not found, method returns negative value
68 bool Remove (const OpenGl_Structure* theStruct,
69 Standard_Integer& thePriority,
70 Standard_Boolean isForChangePriority = Standard_False);
72 //! @return the number of structures
73 Standard_Integer NbStructures() const { return myNbStructures; }
75 //! Returns the number of available priority levels
76 Standard_Integer NbPriorities() const { return myArray.Length(); }
78 //! Append layer of acceptable type (with similar number of priorities or less).
79 //! Returns Standard_False if the list can not be accepted.
80 Standard_Boolean Append (const OpenGl_Layer& theOther);
82 //! Returns array of OpenGL structures.
83 const OpenGl_ArrayOfIndexedMapOfStructure& ArrayOfStructures() const { return myArray; }
85 //! Marks BVH tree for given priority list as dirty and
86 //! marks primitive set for rebuild.
87 void InvalidateBVHData();
89 // Render all structures.
90 void Render (const Handle(OpenGl_Workspace)& theWorkspace,
91 const OpenGl_GlobalLayerSettings& theDefaultSettings) const;
95 //! Traverses through BVH tree to determine which structures are in view volume.
96 void traverse (OpenGl_BVHTreeSelector& theSelector) const;
98 //! Iterates through the hierarchical list of existing structures and renders them all.
99 void renderAll (const Handle(OpenGl_Workspace)& theWorkspace) const;
101 //! Iterates through the hierarchical list of existing structures and renders only overlapping ones.
102 void renderTraverse (const Handle(OpenGl_Workspace)& theWorkspace) const;
106 OpenGl_ArrayOfIndexedMapOfStructure myArray;
107 Standard_Integer myNbStructures;
108 Graphic3d_ZLayerSettings myLayerSettings; //!< Layer setting flags
109 mutable OpenGl_BVHClipPrimitiveSet myBVHPrimitives; //!< Set of OpenGl_Structures for building BVH tree
110 mutable Standard_Boolean myBVHIsLeftChildQueuedFirst; //!< Is needed for implementation of stochastic order of BVH traverse
111 mutable Standard_Boolean myIsBVHPrimitivesNeedsReset; //!< Defines if the primitive set for BVH is outdated
115 DEFINE_STANDARD_ALLOC
119 #endif //_OpenGl_Layer_Header