OGRE 2.1
Object-Oriented Graphics Rendering Engine
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Ogre::DistanceLodStrategyBase Class Referenceabstract

Level of detail strategy based on distance from camera. More...

#include <OgreDistanceLodStrategy.h>

+ Inheritance diagram for Ogre::DistanceLodStrategyBase:

Public Member Functions

 DistanceLodStrategyBase (const String &name)
 Default constructor.
 
virtual Real getBaseValue () const
 Get the value of the first (highest) level of detail.
 
const StringgetName () const
 Get the name of this strategy.
 
virtual Real getSquaredDepth (const MovableObject *movableObject, const Ogre::Camera *camera) const =0
 Get the squared depth from camera to the LOD object.
 
Real getValue (const MovableObject *movableObject, const Camera *camera) const
 Compute the LOD value for a given movable object relative to a given camera.
 
bool isReferenceViewEnabled () const
 Determine if use of the reference view is enabled.
 
virtual void lodUpdateImpl (const size_t numNodes, ObjectData t, const Camera *camera, Real bias) const
 
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 *)
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, const char *file, int line, const char *func)
 operator new, with debug line info
 
voidoperator new (size_t sz, void *ptr)
 placement operator new
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, const char *file, int line, const char *func)
 array operator new, with debug line info
 
void setReferenceView (Real viewportWidth, Real viewportHeight, Radian fovY)
 Sets the reference view upon which the distances were based.
 
void setReferenceViewEnabled (bool value)
 Enables to disables use of the reference view.
 
virtual Real transformBias (Real factor) const
 Transform LOD bias so it only needs to be multiplied by the LOD value.
 
virtual Real transformUserValue (Real userValue) const
 Transform user supplied value to internal value.
 

Static Public Member Functions

static void assertSorted (const v1::Mesh::LodValueArray &values)
 Assert that the LOD values are sorted from greatest detail to least detail.
 
static ushort getIndex (Real value, const Material::LodValueArray &materialLodValueArray)
 Get the index of the LOD usage which applies to a given value.
 
static ushort getIndex (Real value, const v1::Mesh::MeshLodUsageList &meshLodUsageList)
 Get the index of the LOD usage which applies to a given value.
 
static bool isSorted (const v1::Mesh::LodValueArray &values)
 Determine if the LOD values are sorted from greatest detail to least detail.
 
static void lodSet (ObjectData &t, Real lodValues[ARRAY_PACKED_REALS])
 
static void sort (v1::Mesh::MeshLodUsageList &meshLodUsageList)
 Sort mesh LOD usage list from greatest to least detail.
 

Detailed Description

Level of detail strategy based on distance from camera.

This is an abstract base class for DistanceLodBoxStrategy and DistanceLodSphereStrategy.

Remarks
The purpose of the reference view is to ensure a consistent experience for all users. Monitors of different resolutions and aspect ratios will each have different results for the distance queries.
It depends on gameplay testing. If all testers had 16:9 monitors and 110° FOV, then that's the value you should enter (to ensure as much as possible the experience stays consistent for all other users who don't have a 16:9 monitor and/or use a different FOV).
If all your testers had 4:3 monitors, then enter a 4:3 resolution.
If all your testers had varying resolutions or you just didn't care, then this feature is useless for you and should be disabled (default: disabled).

Constructor & Destructor Documentation

◆ DistanceLodStrategyBase()

Ogre::DistanceLodStrategyBase::DistanceLodStrategyBase ( const String name)

Default constructor.

Member Function Documentation

◆ assertSorted()

static void Ogre::LodStrategy::assertSorted ( const v1::Mesh::LodValueArray values)
staticinherited

Assert that the LOD values are sorted from greatest detail to least detail.

◆ getBaseValue()

virtual Real Ogre::DistanceLodStrategyBase::getBaseValue ( ) const
virtual

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

Implements Ogre::LodStrategy.

◆ getIndex() [1/2]

static ushort Ogre::LodStrategy::getIndex ( Real  value,
const Material::LodValueArray materialLodValueArray 
)
staticinherited

Get the index of the LOD usage which applies to a given value.

◆ getIndex() [2/2]

static ushort Ogre::LodStrategy::getIndex ( Real  value,
const v1::Mesh::MeshLodUsageList meshLodUsageList 
)
staticinherited

Get the index of the LOD usage which applies to a given value.

◆ getName()

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

Get the name of this strategy.

◆ getSquaredDepth()

virtual Real Ogre::DistanceLodStrategyBase::getSquaredDepth ( const MovableObject movableObject,
const Ogre::Camera camera 
) const
pure virtual

Get the squared depth from camera to the LOD object.

Implemented in Ogre::DistanceLodSphereStrategy, and Ogre::DistanceLodBoxStrategy.

◆ 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.

◆ isReferenceViewEnabled()

bool Ogre::DistanceLodStrategyBase::isReferenceViewEnabled ( ) const

Determine if use of the reference view is enabled.

◆ isSorted()

static bool Ogre::LodStrategy::isSorted ( const v1::Mesh::LodValueArray values)
staticinherited

Determine if the LOD values are sorted from greatest detail to least detail.

◆ lodSet()

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

◆ lodUpdateImpl()

virtual void Ogre::DistanceLodStrategyBase::lodUpdateImpl ( const size_t  numNodes,
ObjectData  t,
const Camera camera,
Real  bias 
) const
virtual

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

◆ setReferenceView()

void Ogre::DistanceLodStrategyBase::setReferenceView ( Real  viewportWidth,
Real  viewportHeight,
Radian  fovY 
)

Sets the reference view upon which the distances were based.

Note
This automatically enables use of the reference view.
There is no corresponding get method for these values as they are not saved, but used to compute a reference value.

◆ setReferenceViewEnabled()

void Ogre::DistanceLodStrategyBase::setReferenceViewEnabled ( bool  value)

Enables to disables use of the reference view.

Note
Do not enable use of the reference view before setting it.

◆ sort()

static void Ogre::LodStrategy::sort ( v1::Mesh::MeshLodUsageList meshLodUsageList)
staticinherited

Sort mesh LOD usage list from greatest to least detail.

◆ transformBias()

virtual Real Ogre::DistanceLodStrategyBase::transformBias ( Real  factor) const
virtual

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

Implements Ogre::LodStrategy.

◆ transformUserValue()

virtual Real Ogre::DistanceLodStrategyBase::transformUserValue ( Real  userValue) const
virtual

Transform user supplied value to internal value.

Remarks
By default, performs no transformation.
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: