OGRE-Next  3.0.0unstable
Object-Oriented Graphics Rendering Engine
Ogre::LodStrategy Class Referenceabstract

Strategy for determining level of detail. More...

#include <OgreLodStrategy.h>

+ Inheritance diagram for Ogre::LodStrategy:

Public Member Functions

 LodStrategy (const String &name)
 Constructor accepting name. More...
 
virtual ~LodStrategy ()
 Virtual destructor. More...
 
virtual Real getBaseValue () const =0
 Get the value of the first (highest) level of detail. More...
 
const StringgetName () 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...
 
virtual void lodUpdateImpl (const size_t numNodes, ObjectData t, const Camera *camera, Real bias) const =0
 
virtual Real transformBias (Real factor) const =0
 Transform LOD bias so it only needs to be multiplied by the LOD value. More...
 
virtual Real transformUserValue (Real userValue) const
 Transform user supplied value to internal value. More...
 

Static Public Member Functions

static void lodSet (ObjectData &t, Real lodValues[ARRAY_PACKED_REALS])
 

Detailed Description

Strategy for determining level of detail.

Remarks
Generally, to create a new LOD strategy, all of the following will need to be implemented: getValueImpl, getBaseValue, transformBias, getIndex, sort, and isSorted. In addition, transformUserValue may be overridden.

Constructor & Destructor Documentation

◆ LodStrategy()

Ogre::LodStrategy::LodStrategy ( const String name)

Constructor accepting name.

◆ ~LodStrategy()

virtual Ogre::LodStrategy::~LodStrategy ( )
virtual

Virtual destructor.

Member Function Documentation

◆ getBaseValue()

virtual Real Ogre::LodStrategy::getBaseValue ( ) const
pure virtual

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

Implemented in Ogre::PixelCountLodStrategyBase, and Ogre::DistanceLodStrategyBase.

◆ getName()

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

Get the name of this strategy.

◆ getValue()

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

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

◆ lodSet()

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

◆ lodUpdateImpl()

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

◆ transformBias()

virtual Real Ogre::LodStrategy::transformBias ( Real  factor) const
pure virtual

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

Implemented in Ogre::PixelCountLodStrategyBase, and Ogre::DistanceLodStrategyBase.

◆ transformUserValue()

virtual Real Ogre::LodStrategy::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 in Ogre::PixelCountLodStrategyBase, and Ogre::DistanceLodStrategyBase.


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