OpenGL based implementation of the GeometryBuffer interface. More...

Inheritance diagram for CEGUI::OpenGLGeometryBufferBase:

Collaboration diagram for CEGUI::OpenGLGeometryBufferBase:

Classes
struct	BatchInfo
	type to track info for per-texture sub batches of geometry More...

struct	GLVertex
	internal Vertex structure used for GL based geometry. More...

Public Member Functions
	OpenGLGeometryBufferBase (OpenGLRendererBase &owner)
	Constructor.

void	setTranslation (const Vector3f &t)
	Set the translation to be applied to the geometry in the buffer when it is subsequently rendered. More...

void	setRotation (const Quaternion &r)
	Set the rotations to be applied to the geometry in the buffer when it is subsequently rendered. More...

void	setPivot (const Vector3f &p)
	Set the pivot point to be used when applying the rotations. More...

void	setClippingRegion (const Rectf &region)
	Set the clipping region to be used when rendering this buffer.

void	appendVertex (const Vertex &vertex)
	Append a single vertex to the buffer. More...

void	appendGeometry (const Vertex *const vbuff, uint vertex_count)
	Append a number of vertices from an array to the GeometryBuffer. More...

void	setActiveTexture (Texture *texture)
	Set the active texture to be used with all subsequently added vertices. More...

void	reset ()
	Clear all buffered data and reset the GeometryBuffer to the default state.

Texture *	getActiveTexture () const
	Return a pointer to the currently active Texture object. This may return 0 if no texture is set. More...

uint	getVertexCount () const
	Return the total number of vertices currently held by this GeometryBuffer object. More...

uint	getBatchCount () const
	Return the number of batches of geometry that this GeometryBuffer has split the vertices into. More...

void	setRenderEffect (RenderEffect *effect)
	Set the RenderEffect to be used by this GeometryBuffer. More...

RenderEffect *	getRenderEffect ()
	Return the RenderEffect object that is assigned to this GeometryBuffer or 0 if none.

void	setClippingActive (const bool active)
	Set whether clipping will be active for subsequently added vertices. More...

bool	isClippingActive () const

const mat4Pimpl *	getMatrix () const
	return the GL modelview matrix used for this buffer.

Public Member Functions inherited from CEGUI::GeometryBuffer
virtual	~GeometryBuffer ()
	Destructor.

virtual void	draw () const =0
	Draw the geometry buffered within this GeometryBuffer object.

virtual void	setBlendMode (const BlendMode mode)
	Set the blend mode option to use when rendering this GeometryBuffer. More...

virtual BlendMode	getBlendMode () const
	Return the blend mode that is set to be used for this GeometryBuffer. More...

Protected Types
typedef std::vector< BatchInfo >	BatchList
	type of container that tracks BatchInfos.

typedef std::vector< GLVertex >	VertexList
	type of container used to queue the geometry

Protected Member Functions
void	performBatchManagement ()
	perform batch management operations prior to adding new geometry.

void	updateMatrix () const
	update cached matrix

Protected Member Functions inherited from CEGUI::GeometryBuffer
	GeometryBuffer ()
	Constructor.

Protected Attributes
OpenGLRendererBase *	d_owner
	OpenGLRendererBase that owns the GeometryBuffer.

OpenGLTexture *	d_activeTexture
	last texture that was set as active

BatchList	d_batches
	list of texture batches added to the geometry buffer

VertexList	d_vertices
	container where added geometry is stored.

Rectf	d_clipRect
	rectangular clip region

bool	d_clippingActive
	whether clipping will be active for the current batch

Vector3f	d_translation
	translation vector

Quaternion	d_rotation
	rotation quaternion

Vector3f	d_pivot
	pivot point for rotation

RenderEffect *	d_effect
	RenderEffect that will be used by the GeometryBuffer.

mat4Pimpl *	d_matrix
	model matrix cache - we use double because gluUnproject takes double

bool	d_matrixValid
	true when d_matrix is valid and up to date

Protected Attributes inherited from CEGUI::GeometryBuffer
BlendMode	d_blendMode
	The BlendMode to use when rendering this GeometryBuffer.

Detailed Description

OpenGL based implementation of the GeometryBuffer interface.

Member Function Documentation

void CEGUI::OpenGLGeometryBufferBase::appendGeometry	(	const Vertex *const	vbuff,
		uint	vertex_count
	)

virtual

Append a number of vertices from an array to the GeometryBuffer.

Parameters

vbuff	Pointer to an array of Vertex objects that describe the vertices that are to be added to the GeometryBuffer.
vertex_count	The number of Vertex objects from the array vbuff that are to be added to the GeometryBuffer.

Implements CEGUI::GeometryBuffer.

Reimplemented in CEGUI::OpenGL3GeometryBuffer.

void CEGUI::OpenGLGeometryBufferBase::appendVertex ( const Vertex & vertex )

virtual

Append a single vertex to the buffer.

Parameters

vertex Vertex object describing the vertex to be added to the GeometryBuffer.

Implements CEGUI::GeometryBuffer.

Texture* CEGUI::OpenGLGeometryBufferBase::getActiveTexture ( ) const

virtual

Return a pointer to the currently active Texture object. This may return 0 if no texture is set.

Returns: Pointer the Texture object that is currently active, or 0 if texturing is not being used.

Implements CEGUI::GeometryBuffer.

uint CEGUI::OpenGLGeometryBufferBase::getBatchCount ( ) const

virtual

Return the number of batches of geometry that this GeometryBuffer has split the vertices into.

Note: How batching is done will be largely implementation specific, although it would be reasonable to expect that you will have at least one batch of geometry per texture switch.

Returns: The number of batches of geometry held by the GeometryBuffer.

Implements CEGUI::GeometryBuffer.

uint CEGUI::OpenGLGeometryBufferBase::getVertexCount ( ) const

virtual

Return the total number of vertices currently held by this GeometryBuffer object.

Returns: The number of vertices that have been appended to this GeometryBuffer.

Implements CEGUI::GeometryBuffer.

void CEGUI::OpenGLGeometryBufferBase::setActiveTexture ( Texture * texture )

virtual

Set the active texture to be used with all subsequently added vertices.

Parameters

texture Pointer to a Texture object that shall be used for subsequently added vertices. This may be 0, in which case texturing will be disabled for subsequently added vertices.

Implements CEGUI::GeometryBuffer.

void CEGUI::OpenGLGeometryBufferBase::setClippingActive ( const bool active )

virtual

Set whether clipping will be active for subsequently added vertices.

Parameters

active

true if vertices added after this call should be clipped to the clipping region defined for this GeometryBuffer.
false if vertices added after this call should not be clipped (other than to the edges of rendering target.

Implements CEGUI::GeometryBuffer.

void CEGUI::OpenGLGeometryBufferBase::setPivot ( const Vector3f & p )

virtual

Set the pivot point to be used when applying the rotations.

Parameters

p	Vector3 describing the location of the pivot point to be used when applying the rotation to the geometry.

Implements CEGUI::GeometryBuffer.

void CEGUI::OpenGLGeometryBufferBase::setRenderEffect ( RenderEffect * effect )

virtual

Set the RenderEffect to be used by this GeometryBuffer.

Parameters

effect Pointer to the RenderEffect to be used during renderng of the GeometryBuffer. May be 0 to remove a previously added RenderEffect.

Note: When adding a RenderEffect, the GeometryBuffer does not take ownership of, nor make a copy of, the passed RenderEffect - this means you need to be careful not to delete the RenderEffect if it might still be in use!

Implements CEGUI::GeometryBuffer.

void CEGUI::OpenGLGeometryBufferBase::setRotation ( const Quaternion & r )

virtual

Set the rotations to be applied to the geometry in the buffer when it is subsequently rendered.

Parameters

r	Quaternion describing the rotation to be used.

Implements CEGUI::GeometryBuffer.

void CEGUI::OpenGLGeometryBufferBase::setTranslation ( const Vector3f & v )

virtual

Set the translation to be applied to the geometry in the buffer when it is subsequently rendered.

Parameters

v	Vector3 describing the three axis translation vector to be used.

Implements CEGUI::GeometryBuffer.

Classes

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation