Element that stores the rectangular area within the current viewport region that needs to be updated when rendering. More...

#include <Inventor/elements/SoGLUpdateAreaElement.h>

Inheritance diagram for SoGLUpdateAreaElement:

Public Member Functions
virtual void	init (SoState *state)
	Initializes element.

virtual void	push (SoState *state)
	Override push() and pop() methods to keep GL up to date.

virtual void	pop (SoState state, const SoElement prevTopElement)

virtual bool	matches (const SoElement *elt) const
	Returns TRUE if the update areas match in both elements.

virtual SoElement *	copyMatchInfo () const
	Create and return a copy of this element.

virtual void	print (FILE *fp) const
	Prints element (for debugging)

Public Member Functions inherited from SoElement
virtual void	init (SoState *state)
	Initializes element.

virtual void	push (SoState *state)
	Pushes/pops element.

virtual void	pop (SoState state, const SoElement prevTopElement)

virtual void	print (FILE *fp) const
	Prints element (for debugging)

virtual bool	matches (const SoElement *elt) const =0
	Returns TRUE if the element matches another element (of the same class, presumably) with respect to cache validity.

virtual SoElement *	copyMatchInfo () const =0
	Create a copy that we can put in a cache used list and call matches() on later.

SoType	getTypeId () const
	Returns type identifier for element instance.

int	getStackIndex () const
	Returns the stack index for an element instance.

void	setDepth (int dpth)
	Sets stuff in an element instance.

void	setNext (SoElement *nxt)

void	setNextInStack (SoElement *nxt)

void	setNextFree (SoElement *nxt)

int	getDepth () const
	Returns stuff from element instance.

SoElement *	getNext () const

virtual	~SoElement ()
	Destructor.

Static Public Member Functions
static void	set (SoState *state, const SbVec2f &origin, const SbVec2f &size)
	Sets the current update area in the state. May have GL side effects.

static bool	get (SoState *state, SbVec2f &origin, SbVec2f &size)
	Returns current update area from the state.

static SbVec2f	getDefaultOrigin ()
	Returns the default update area origin and size.

static SbVec2f	getDefaultSize ()

static void	initClass ()
	Initializes the SoGLUpdateAreaElement class.

Static Public Member Functions inherited from SoElement
static SoType	getClassTypeId ()
	Returns type identifier for SoElement class.

static void	initElements ()
	Initialize ALL Inventor element classes.

static void	initClass ()
	Initializes the SoElement class.

static int	getNumStackIndices ()
	Returns the number of stack indices allocated.

static SoType	getIdFromStackIndex (int stackIndex)
	Returns the id for the element with the given stack index.

Protected Member Functions
virtual	~SoGLUpdateAreaElement ()

Protected Member Functions inherited from SoElement
	SoElement ()
	Constructor; use typeId.createInstance to create elements.

void	capture (SoState *state) const
	Does whatever is necessary in state to capture this element for caching purposes.

virtual void	captureThis (SoState *state) const
	Really captures this element, once it has been determined that a cache is open to capture it.

void	setTypeId (SoType id)
	Sets typeId in instance.

void	setStackIndex (int index)
	Sets stackIndex in instance.

SoElement *	getNextInStack () const
	Returns next instance in specific element stack.

SoElement *	getNextFree () const
	Returns next free element in a specific element stack.

Protected Attributes
SbVec2f	origin

SbVec2f	size

Additional Inherited Members
Static Protected Member Functions inherited from SoElement
static SoElement *	getElement (SoState *state, int stackIndex)
	Returns an instance of an element from the stack with the given index in the given state.

static const SoElement *	getConstElement (SoState *state, int stackIndex)
	Returns a read-only pointer to the top instance in the given element stack.

static int	createStackIndex (SoType id)
	Creates and returns a new stack index.

Static Protected Attributes inherited from SoElement
static int	classStackIndex
	Stack index for SoElement class.

Detailed Description

It can be used for partial rendering updates when applications know that only a portion of the objects need to be rerendered. Cameras can use the info in this element to set up a view volume against which culling can be performed. This element also sets up the GL scissor box to limit drawing.

The update area is specified in normalized viewport coordinates, where (0,0) is the lower left corner of the viewport and (1,1) is the upper right corner. The area is given as an origin and a size.

Definition at line 80 of file SoGLUpdateAreaElement.h.

Constructor & Destructor Documentation

◆ ~SoGLUpdateAreaElement()

virtual SoGLUpdateAreaElement::~SoGLUpdateAreaElement ( )

protectedvirtual

Member Function Documentation

◆ copyMatchInfo()

virtual SoElement * SoGLUpdateAreaElement::copyMatchInfo ( ) const

virtual

Implements SoElement.

◆ get()

static bool SoGLUpdateAreaElement::get	(	SoState *	state,
		SbVec2f &	origin,
		SbVec2f &	size
	)

static

Returns TRUE if the update area is the default, namely, the entire viewport.

◆ getDefaultOrigin()

static SbVec2f SoGLUpdateAreaElement::getDefaultOrigin ( )

inlinestatic

Definition at line 97 of file SoGLUpdateAreaElement.h.

◆ getDefaultSize()

static SbVec2f SoGLUpdateAreaElement::getDefaultSize ( )

inlinestatic

Definition at line 98 of file SoGLUpdateAreaElement.h.

◆ init()

virtual void SoGLUpdateAreaElement::init ( SoState * state )

virtual

Reimplemented from SoElement.

◆ initClass()

static void SoGLUpdateAreaElement::initClass ( )

static

◆ matches()

virtual bool SoGLUpdateAreaElement::matches ( const SoElement * elt ) const

virtual

Implements SoElement.

◆ pop()

virtual void SoGLUpdateAreaElement::pop	(	SoState *	state,
		const SoElement *	prevTopElement
	)

virtual

Reimplemented from SoElement.

◆ print()

virtual void SoGLUpdateAreaElement::print ( FILE * fp ) const

virtual

Reimplemented from SoElement.

◆ push()

virtual void SoGLUpdateAreaElement::push ( SoState * state )

virtual

Reimplemented from SoElement.

◆ set()

static void SoGLUpdateAreaElement::set	(	SoState *	state,
		const SbVec2f &	origin,
		const SbVec2f &	size
	)

static

Member Data Documentation

◆ origin

SbVec2f SoGLUpdateAreaElement::origin

protected

Definition at line 118 of file SoGLUpdateAreaElement.h.

◆ size

SbVec2f SoGLUpdateAreaElement::size

protected

Definition at line 118 of file SoGLUpdateAreaElement.h.

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

C:/jh/mevislab/4.0.2_1/build/MeVis/ThirdParty/Sources/Inventor/include/Inventor/elements/SoGLUpdateAreaElement.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~SoGLUpdateAreaElement()

Member Function Documentation

◆ copyMatchInfo()

◆ get()

◆ getDefaultOrigin()

◆ getDefaultSize()

◆ init()

◆ initClass()

◆ matches()

◆ pop()

◆ print()

◆ push()

◆ set()

Member Data Documentation

◆ origin

◆ size