CEGUI::NullTextureTarget Class Reference

CEGUI::TextureTarget implementation for the Null engine. More...

Inheritance diagram for CEGUI::NullTextureTarget:

Collaboration diagram for CEGUI::NullTextureTarget:

Public Member Functions
	NullTextureTarget (NullRenderer &owner)
	Constructor.
virtual	~NullTextureTarget ()
	Destructor.
bool	isImageryCache () const
	Return whether the RenderTarget is an implementation that caches actual rendered imagery. More...
void	clear ()
	Clear the surface of the underlying texture.
Texture &	getTexture () const
	Return a pointer to the CEGUI::Texture that the TextureTarget is using. More...
void	declareRenderSize (const Size &sz)
	Used to declare to the TextureTarget the largest size, in pixels, of the next set of incoming rendering operations. More...
bool	isRenderingInverted () const
	Return whether rendering done on the target texture is inverted in relation to regular textures. More...
Public Member Functions inherited from CEGUI::NullRenderTarget
	NullRenderTarget (NullRenderer &owner)
	Constructor.
virtual	~NullRenderTarget ()
	Destructor.
void	draw (const GeometryBuffer &buffer)
	Draw geometry from the given GeometryBuffer onto the surface that this RenderTarget represents. More...
void	draw (const RenderQueue &queue)
	Draw geometry from the given RenderQueue onto the surface that this RenderTarget represents. More...
void	setArea (const Rect &area)
	Set the area for this RenderTarget. The exact action this function will take depends upon what the concrete class is representing. For example, with a 'view port' style RenderTarget, this should set the area that the view port occupies on the display (or rendering window). More...
const Rect &	getArea () const
	Return the area defined for this RenderTarget. More...
void	activate ()
	Activate the render target and put it in a state ready to be drawn to. More...
void	deactivate ()
	Deactivate the render target after having completed rendering. More...
void	unprojectPoint (const GeometryBuffer &buff, const Vector2 &p_in, Vector2 &p_out) const
	Take point p_in unproject it and put the result in p_out. Resulting point is local to GeometryBuffer buff.
Public Member Functions inherited from CEGUI::RenderTarget
virtual	~RenderTarget ()
	Destructor.

Protected Attributes
NullTexture *	d_CEGUITexture
	This wraps d_texture so it can be used by the core CEGUI lib.
Protected Attributes inherited from CEGUI::NullRenderTarget
NullRenderer &	d_owner
	NullRenderer object that owns this RenderTarget.
Rect	d_area
	holds defined area for the RenderTarget

Static Protected Attributes
static const float	DEFAULT_SIZE
	default / initial size for the underlying texture.

Detailed Description

CEGUI::TextureTarget implementation for the Null engine.

Member Function Documentation

void CEGUI::NullTextureTarget::declareRenderSize ( const Size &  sz )

virtual

Used to declare to the TextureTarget the largest size, in pixels, of the next set of incoming rendering operations.

Note

The main purpose of this is to allow for the implemenatation to resize the underlying texture so that it can hold the imagery that will be drawn.

Parameters

sz	Size object describing the largest area that will be rendererd in the next batch of rendering operations.

Exceptions

InvalidRequestException

May be thrown if the TextureTarget would not be able to handle the operations rendering content of the given size.

Implements CEGUI::TextureTarget.

Texture& CEGUI::NullTextureTarget::getTexture ( ) const

virtual

Return a pointer to the CEGUI::Texture that the TextureTarget is using.

Returns

Texture object that the TextureTarget uses when rendering imagery.

Implements CEGUI::TextureTarget.

bool CEGUI::NullTextureTarget::isImageryCache ( ) const

virtual

Return whether the RenderTarget is an implementation that caches actual rendered imagery.

Typically it is expected that texture based RenderTargets would return
true in response to this call.  Other types of RenderTarget, like
view port based targets, will more likely return false.

Returns

• true if the RenderTarget does cache rendered imagery.
• false if the RenderTarget does not cache rendered imagery.

Reimplemented from CEGUI::NullRenderTarget.

bool CEGUI::NullTextureTarget::isRenderingInverted ( ) const

virtual

Return whether rendering done on the target texture is inverted in relation to regular textures.

This is intended to be used when generating geometry for rendering the
TextureTarget onto another surface.

Returns

• true if the texture content should be considered as inverted vertically in comparison with other regular textures.
• false if the texture content has the same orientation as regular textures.

Implements CEGUI::TextureTarget.