OGRE-Next  3.0.0unstable
Object-Oriented Graphics Rendering Engine
Ogre::DistanceLodBoxStrategy Class Reference

Level of detail strategy based on distance from camera to an object's bounding box. More...

#include <OgreDistanceLodStrategy.h>

+ Inheritance diagram for Ogre::DistanceLodBoxStrategy:

Public Member Functions

 DistanceLodBoxStrategy ()
 Default constructor. More...
 
Real getSquaredDepth (const MovableObject *movableObject, const Ogre::Camera *camera) const override
 Get the squared depth from camera to the LOD object. More...
 
- Public Member Functions inherited from Ogre::DistanceLodStrategyBase
 DistanceLodStrategyBase (const String &name)
 Default constructor. More...
 
Real getBaseValue () const override
 Get the value of the first (highest) level of detail. More...
 
bool isReferenceViewEnabled () const
 Determine if use of the reference view is enabled. More...
 
void lodUpdateImpl (const size_t numNodes, ObjectData t, const Camera *camera, Real bias) const override
 
void setReferenceView (Real viewportWidth, Real viewportHeight, Radian fovY)
 Sets the reference view upon which the distances were based. More...
 
void setReferenceViewEnabled (bool value)
 Enables to disables use of the reference view. 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...
 
- Public Member Functions inherited from Ogre::LodStrategy
 LodStrategy (const String &name)
 Constructor accepting name. More...
 
virtual ~LodStrategy ()
 Virtual destructor. 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...
 
- Public Member Functions inherited from Ogre::Singleton< DistanceLodBoxStrategy >
 Singleton ()
 
 ~Singleton ()
 

Static Public Member Functions

static DistanceLodBoxStrategygetSingleton ()
 Override standard Singleton retrieval. More...
 
static DistanceLodBoxStrategygetSingletonPtr ()
 Override standard Singleton retrieval. More...
 
- Static Public Member Functions inherited from Ogre::LodStrategy
static void lodSet (ObjectData &t, Real lodValues[ARRAY_PACKED_REALS])
 
- Static Public Member Functions inherited from Ogre::Singleton< DistanceLodBoxStrategy >
static DistanceLodBoxStrategygetSingleton ()
 
static DistanceLodBoxStrategygetSingletonPtr ()
 

Detailed Description

Level of detail strategy based on distance from camera to an object's bounding box.

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

◆ DistanceLodBoxStrategy()

Ogre::DistanceLodBoxStrategy::DistanceLodBoxStrategy ( )

Default constructor.

Member Function Documentation

◆ getSingleton()

static DistanceLodBoxStrategy& Ogre::DistanceLodBoxStrategy::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 DistanceLodBoxStrategy* Ogre::DistanceLodBoxStrategy::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.

◆ getSquaredDepth()

Real Ogre::DistanceLodBoxStrategy::getSquaredDepth ( const MovableObject movableObject,
const Ogre::Camera camera 
) const
overridevirtual

Get the squared depth from camera to the LOD object.

Implements Ogre::DistanceLodStrategyBase.


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