Ogre::LodStrategy Class Reference

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...
void	assertSorted (const Mesh::LodValueList &values) const
	Assert that the LOD values are sorted from greatest detail to least detail. More...
virtual Real	getBaseValue () const =0
	Get the value of the first (highest) level of detail. More...
virtual ushort	getIndex (Real value, const Mesh::MeshLodUsageList &meshLodUsageList) const =0
	Get the index of the LOD usage which applies to a given value. More...
virtual ushort	getIndex (Real value, const Material::LodValueList &materialLodValueList) const =0
	Get the index of the LOD usage which applies to a given value. 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...
virtual bool	isSorted (const Mesh::LodValueList &values) const =0
	Determine if the LOD values are sorted from greatest detail to least detail. More...
virtual void	sort (Mesh::MeshLodUsageList &meshLodUsageList) const =0
	Sort mesh LOD usage list from greatest to least detail. More...
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...

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::DistanceLodStrategyBase, and Ogre::PixelCountLodStrategyBase.

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::DistanceLodStrategyBase, and Ogre::PixelCountLodStrategyBase.

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::DistanceLodStrategyBase.

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.

getIndex() [1/2]

virtual ushort Ogre::LodStrategy::getIndex ( Real  value, const Mesh::MeshLodUsageList &  meshLodUsageList  ) const

pure virtual

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

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

getIndex() [2/2]

virtual ushort Ogre::LodStrategy::getIndex ( Real  value, const Material::LodValueList &  materialLodValueList  ) const

pure virtual

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

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

sort()

virtual void Ogre::LodStrategy::sort ( Mesh::MeshLodUsageList &  meshLodUsageList ) const

pure virtual

Sort mesh LOD usage list from greatest to least detail.

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

isSorted()

virtual bool Ogre::LodStrategy::isSorted ( const Mesh::LodValueList &  values ) const

pure virtual

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

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

assertSorted()

void Ogre::LodStrategy::assertSorted

(

const Mesh::LodValueList &

values

)

const

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

getName()

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

inline

Get the name of this strategy.

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

• OgreLodStrategy.h