OGRE-Next  2.3
Object-Oriented Graphics Rendering Engine
Public Member Functions | Static Public Member Functions | List of all members
Ogre::ScreenRatioPixelCountLodStrategy Class Reference

The ScreenRatioPixelCountLodStrategy class Implement a strategy which calculates LOD ratios based on coverage in screen ratios in the range [-1.0; 0.0] where -1.0 means the object is covering the whole screen and 0 covering almost nothing in the screen (very tiny). More...

#include <OgrePixelCountLodStrategy.h>

+ Inheritance diagram for Ogre::ScreenRatioPixelCountLodStrategy:

Public Member Functions

 ScreenRatioPixelCountLodStrategy ()
 Default constructor. More...
 
Real getBaseValue () const override
 Get the value of the first (highest) level of detail. More...
 
const String & getName () const
 Get the name of this strategy. More...
 
Real getValue (const MovableObject *movableObject, const Camera *camera) const
 Compute the LOD value for a given movable object relative to a given camera. More...
 
Real getValueImpl (const MovableObject *movableObject, const Camera *camera) const override
 
void lodUpdateImpl (const size_t numNodes, ObjectData t, const Camera *camera, Real bias) const override
 
void operator delete (void *ptr)
 
void operator delete (void *ptr, const char *, int, const char *)
 
void operator delete (void *ptr, void *)
 
void operator delete[] (void *ptr)
 
void operator delete[] (void *ptr, const char *, int, const char *)
 
void * operator new (size_t sz)
 
void * operator new (size_t sz, const char *file, int line, const char *func)
 operator new, with debug line info More...
 
void * operator new (size_t sz, void *ptr)
 placement operator new More...
 
void * operator new[] (size_t sz)
 
void * operator new[] (size_t sz, const char *file, int line, const char *func)
 array operator new, with debug line info More...
 
Real transformBias (Real factor) const override
 Transform LOD bias so it only needs to be multiplied by the LOD value. More...
 
Real transformUserValue (Real userValue) const override
 Transform user supplied value to internal value. More...
 

Static Public Member Functions

static ScreenRatioPixelCountLodStrategy & getSingleton ()
 Override standard Singleton retrieval. More...
 
static ScreenRatioPixelCountLodStrategy * getSingletonPtr ()
 Override standard Singleton retrieval. More...
 
static void lodSet (ObjectData &t, Real lodValues[ARRAY_PACKED_REALS])
 

Detailed Description

The ScreenRatioPixelCountLodStrategy class Implement a strategy which calculates LOD ratios based on coverage in screen ratios in the range [-1.0; 0.0] where -1.0 means the object is covering the whole screen and 0 covering almost nothing in the screen (very tiny).

Note however that:

  1. Values beyond -1.0 are possible (it just means the object is bigger than the screen)
  2. It's an approximation

Constructor & Destructor Documentation

◆ ScreenRatioPixelCountLodStrategy()

Ogre::ScreenRatioPixelCountLodStrategy::ScreenRatioPixelCountLodStrategy ( )

Default constructor.

Member Function Documentation

◆ getBaseValue()

Real Ogre::PixelCountLodStrategyBase::getBaseValue ( ) const
overridevirtualinherited

Get the value of the first (highest) level of detail.

Implements Ogre::LodStrategy.

◆ getName()

const String& Ogre::LodStrategy::getName ( ) const
inlineinherited

Get the name of this strategy.

◆ getSingleton()

static ScreenRatioPixelCountLodStrategy& Ogre::ScreenRatioPixelCountLodStrategy::getSingleton ( )
static

Override standard Singleton retrieval.

Remarks
Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.
This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

◆ getSingletonPtr()

static ScreenRatioPixelCountLodStrategy* Ogre::ScreenRatioPixelCountLodStrategy::getSingletonPtr ( )
static

Override standard Singleton retrieval.

Remarks
Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.
This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

◆ getValue()

Real Ogre::LodStrategy::getValue ( const MovableObject *  movableObject,
const Camera *  camera 
) const
inherited

Compute the LOD value for a given movable object relative to a given camera.

◆ getValueImpl()

Real Ogre::ScreenRatioPixelCountLodStrategy::getValueImpl ( const MovableObject *  movableObject,
const Camera *  camera 
) const
overridevirtual

Implements Ogre::LodStrategy.

◆ lodSet()

static void Ogre::LodStrategy::lodSet ( ObjectData &  t,
Real  lodValues[ARRAY_PACKED_REALS] 
)
inlinestaticinherited

◆ lodUpdateImpl()

void Ogre::ScreenRatioPixelCountLodStrategy::lodUpdateImpl ( const size_t  numNodes,
ObjectData  t,
const Camera *  camera,
Real  bias 
) const
overridevirtual

Implements Ogre::LodStrategy.

◆ operator delete() [1/3]

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr)
inlineinherited

◆ operator delete() [2/3]

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr,
const char *  ,
int  ,
const char *   
)
inlineinherited

◆ operator delete() [3/3]

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr,
void *   
)
inlineinherited

◆ operator delete[]() [1/2]

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete[] ( void *  ptr)
inlineinherited

◆ operator delete[]() [2/2]

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete[] ( void *  ptr,
const char *  ,
int  ,
const char *   
)
inlineinherited

◆ operator new() [1/3]

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz)
inlineinherited

◆ operator new() [2/3]

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz,
const char *  file,
int  line,
const char *  func 
)
inlineinherited

operator new, with debug line info

◆ operator new() [3/3]

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz,
void *  ptr 
)
inlineinherited

placement operator new

◆ operator new[]() [1/2]

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new[] ( size_t  sz)
inlineinherited

◆ operator new[]() [2/2]

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new[] ( size_t  sz,
const char *  file,
int  line,
const char *  func 
)
inlineinherited

array operator new, with debug line info

◆ transformBias()

Real Ogre::PixelCountLodStrategyBase::transformBias ( Real  factor) const
overridevirtualinherited

Transform LOD bias so it only needs to be multiplied by the LOD value.

Implements Ogre::LodStrategy.

◆ transformUserValue()

Real Ogre::PixelCountLodStrategyBase::transformUserValue ( Real  userValue) const
inlineoverridevirtualinherited

Transform user supplied value to internal value.

Remarks
Do not throw exceptions for invalid values here, as the LOD strategy may be changed such that the values become valid.

Reimplemented from Ogre::LodStrategy.

The documentation for this class was generated from the following file: