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Object-Oriented Graphics Rendering Engine
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OgrePixelCountLodStrategy.h
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28 #ifndef __Pixel_Count_Lod_Strategy_H__
29 #define __Pixel_Count_Lod_Strategy_H__
30 
31 #include "OgrePrerequisites.h"
32 
33 #include "OgreLodStrategy.h"
34 #include "OgreSingleton.h"
35 
36 namespace Ogre {
37 
48 
51  {
52  public:
54  PixelCountLodStrategyBase(const String& name);
55 
57  virtual Real getBaseValue() const;
58 
60  virtual Real transformBias(Real factor) const;
61 
67  virtual Real transformUserValue(Real userValue) const { return -userValue; }
68  };
72  class _OgreExport AbsolutePixelCountLodStrategy : public PixelCountLodStrategyBase, public Singleton<AbsolutePixelCountLodStrategy>
73  {
74  public:
77 
79  Real getValueImpl(const MovableObject *movableObject, const Camera *camera) const;
80 
81  virtual void lodUpdateImpl( const size_t numNodes, ObjectData t,
82  const Camera *camera, Real bias ) const;
83 
99  static AbsolutePixelCountLodStrategy& getSingleton(void);
115  static AbsolutePixelCountLodStrategy* getSingletonPtr(void);
116  };
120  class _OgreExport ScreenRatioPixelCountLodStrategy : public PixelCountLodStrategyBase, public Singleton<ScreenRatioPixelCountLodStrategy>
121  {
122  public:
125 
127  Real getValueImpl(const MovableObject *movableObject, const Camera *camera) const;
128 
129  virtual void lodUpdateImpl( const size_t numNodes, ObjectData t,
130  const Camera *camera, Real bias ) const;
131 
147  static ScreenRatioPixelCountLodStrategy& getSingleton(void);
163  static ScreenRatioPixelCountLodStrategy* getSingletonPtr(void);
164  };
168 } // namespace
169 
170 #endif
A viewpoint from which the scene will be rendered.
Definition: OgreCamera.h:82
Represents the transform of a single object, arranged in SoA (Structure of Arrays) ...
float Real
Software floating point type.
#define _OgreExport
Definition: OgrePlatform.h:255
Template class for creating single-instance global classes.
Definition: OgreSingleton.h:64
virtual Real transformUserValue(Real userValue) const
Transform user supplied value to internal value.
Strategy for determining level of detail.
Abstract class defining a movable object in a scene.
AbsolutePixelCountLodStrategy PixelCountLodStrategy
Backward compatible name for Distance_Box strategy.
_StringBase String
Definition: OgreCommon.h:53
Abstract base class for level of detail strategy based on pixel count approximations from bounding sp...