OgreDynamicRenderable Class Reference

Abstract base class providing mechanisms for dynamically growing hardware buffers. More...

#include <OgreDynamicRenderable.hh>

Public Member Functions
	OgreDynamicRenderable ()
	Constructor. More...
virtual	~OgreDynamicRenderable ()
	Virtual destructor. More...
virtual Ogre::Real	getBoundingRadius () const
	Implementation of Ogre::SimpleRenderable. More...
virtual Ogre::Real	getSquaredViewDepth (const Ogre::Camera *_cam) const
	Implementation of Ogre::SimpleRenderable. More...
void	Init (MarkerType _opType, bool _useIndices=false)
	Initializes the dynamic renderable. More...
MarkerType	OperationType () const
	Get the render operation type. More...
void	SetOperationType (MarkerType _opType)
	Set the render operation type. More...

Protected Member Functions
virtual void	CreateVertexDeclaration ()=0
	Creates the vertex declaration. More...
virtual void	FillHardwareBuffers ()=0
	Fills the hardware vertex and index buffers with data. More...
void	PrepareHardwareBuffers (size_t _vertexCount, size_t _indexCount)
	Prepares the hardware buffers for the requested vertex and index counts. More...

Protected Attributes
size_t	indexBufferCapacity = 0
	Maximum capacity of the currently allocated index buffer. More...
size_t	vertexBufferCapacity = 0
	Maximum capacity of the currently allocated vertex buffer. More...

Detailed Description

Abstract base class providing mechanisms for dynamically growing hardware buffers.

Constructor & Destructor Documentation

OgreDynamicRenderable()

OgreDynamicRenderable

(

)

Constructor.

~OgreDynamicRenderable()

virtual ~OgreDynamicRenderable ( )

virtual

Virtual destructor.

Member Function Documentation

CreateVertexDeclaration()

virtual void CreateVertexDeclaration ( )

protectedpure virtual

Creates the vertex declaration.

Remarks

Override and set mRenderOp.vertexData->vertexDeclaration here. mRenderOp.vertexData will be created for you before this method is called.

FillHardwareBuffers()

virtual void FillHardwareBuffers ( )

protectedpure virtual

Fills the hardware vertex and index buffers with data.

Remarks

This function must call prepareHardwareBuffers() before locking the buffers to ensure the they are large enough for the data to be written. Afterwards the vertex and index buffers (if using indices) can be locked, and data can be written to them.

getBoundingRadius()

virtual Ogre::Real getBoundingRadius ( ) const

virtual

Implementation of Ogre::SimpleRenderable.

Returns

The bounding radius

getSquaredViewDepth()

virtual Ogre::Real getSquaredViewDepth ( const Ogre::Camera *  _cam ) const

virtual

Implementation of Ogre::SimpleRenderable.

Parameters

[in]

_cam

Pointer to the Ogre camera that views the renderable.

Returns

The squared depth in the Camera's view

Init()

void Init	(	MarkerType	_opType,
		bool	_useIndices = false
	)

Initializes the dynamic renderable.

Remarks

This function should only be called once. It initializes the render operation, and calls the abstract function CreateVertexDeclaration().

Parameters

[in]	_opType	The type of render operation to perform.
[in]	_useIndices	Specifies whether to use indices to determine the vertices to use as input.

OperationType()

MarkerType OperationType

(

)

const

Get the render operation type.

Returns

The render operation type.

PrepareHardwareBuffers()

void PrepareHardwareBuffers ( size_t  _vertexCount, size_t  _indexCount  )

protected

Prepares the hardware buffers for the requested vertex and index counts.

Remarks

This function must be called before locking the buffers in fillHardwareBuffers(). It guarantees that the hardware buffers are large enough to hold at least the requested number of vertices and indices (if using indices). The buffers are possibly reallocated to achieve this.

The vertex and index count in the render operation are set to

the values of vertexCount and indexCount respectively.

Parameters

[in]	_vertexCount	The number of vertices the buffer must hold.
[in]	_indexCount	The number of indices the buffer must hold. This parameter is ignored if not using indices.

SetOperationType()

void SetOperationType

(

MarkerType

_opType

)

Set the render operation type.

Parameters

[in]

_opType

The type of render operation to perform.

Member Data Documentation

indexBufferCapacity

size_t indexBufferCapacity = 0

protected

Maximum capacity of the currently allocated index buffer.

vertexBufferCapacity

size_t vertexBufferCapacity = 0

protected

Maximum capacity of the currently allocated vertex buffer.

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

• OgreDynamicRenderable.hh