SoGLUpdateAreaElement Class Reference

The SoGLUpdateAreaElement class is yet to be documented. More...

#include <Inventor/elements/SoGLUpdateAreaElement.h>

Inheritance diagram for SoGLUpdateAreaElement:

Public Member Functions
virtual void	init (SoState *state)
virtual void	push (SoState *state)
virtual void	pop (SoState *state, const SoElement *prevTopElement)
virtual SbBool	matches (const SoElement *element) const
virtual SoElement *	copyMatchInfo () const
Public Member Functions inherited from SoElement
const SoType	getTypeId (void) const
int	getStackIndex (void) const
void	setDepth (const int depth)
int	getDepth (void) const
virtual void	print (FILE *file=stdout) const
virtual	~SoElement ()

Static Public Member Functions
static SoType	getClassTypeId (void)
static int	getClassStackIndex (void)
static void *	createInstance (void)
static void	initClass (void)
static void	set (SoState *const state, const SbVec2f &origin, const SbVec2f &size)
static SbBool	get (SoState *const state, SbVec2f &origin, SbVec2f &size)
static SbVec2f	getDefaultOrigin ()
static SbVec2f	getDefaultSize ()
Static Public Member Functions inherited from SoElement
static void	initClass (void)
static SoType	getClassTypeId (void)
static int	getClassStackIndex (void)
static void	initElements (void)
static int	getNumStackIndices (void)
static SoType	getIdFromStackIndex (const int stackIndex)

Protected Member Functions
virtual	~SoGLUpdateAreaElement ()
Protected Member Functions inherited from SoElement
	SoElement (void)
void	capture (SoState *const state) const
virtual void	captureThis (SoState *state) const
void	setTypeId (const SoType typeId)
void	setStackIndex (const int index)
SoElement *	getNextInStack (void) const
SoElement *	getNextFree (void) const

Protected Attributes
SbVec2f	origin
SbVec2f	size
Protected Attributes inherited from SoElement
SoType	typeId
int	stackIndex
int	depth

Additional Inherited Members
Static Protected Member Functions inherited from SoElement
static SoElement *	getElement (SoState *const state, const int stackIndex)
static const SoElement *	getConstElement (SoState *const state, const int stackIndex)
static int	createStackIndex (const SoType id)
Static Protected Attributes inherited from SoElement
static int	classStackIndex
static SoTypeList *	stackToType

Detailed Description

The SoGLUpdateAreaElement class is yet to be documented.

FIXME: write doc.

Constructor & Destructor Documentation

~SoGLUpdateAreaElement()

SoGLUpdateAreaElement::~SoGLUpdateAreaElement ( )

protectedvirtual

The destructor.

Member Function Documentation

createInstance()

void * SoGLUpdateAreaElement::createInstance ( void  )

static

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

initClass()

void SoGLUpdateAreaElement::initClass ( void  )

static

This static method initializes static data for the SoGLUpdateAreaElement class.

init()

void SoGLUpdateAreaElement::init ( SoState *  state )

virtual

This function initializes the element type in the given SoState. It is called for the first element of each enabled element type in SoState objects.

Reimplemented from SoElement.

push()

void SoGLUpdateAreaElement::push ( SoState *  state )

virtual

This method is called every time a new element is required in one of the stacks. This happens when a writable element is requested, using SoState::getElement() or indirectly SoElement::getElement(), and the depth of the current element is less than the state depth.

Override this method if your element needs to copy data from the previous top of stack. The push() method is called on the new element, and the previous element can be found using SoElement::getNextInStack().

Reimplemented from SoElement.

pop()

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

virtual

This method is callled when the state is popped, and the depth of the element is bigger than the current state depth. pop() is called on the new top of stack, and a pointer to the previous top of stack is passed in prevTopElement.

Override this method if you need to copy some state information from the previous top of stack.

Reimplemented from SoElement.

matches()

SbBool SoGLUpdateAreaElement::matches ( const SoElement *  element ) const

virtual

This function returns TRUE is the element matches another element (of the same class), with respect to cache validity.

If the application programmer's extension element has a matches() function, it should also have a copyMatchInfo() function.

Implements SoElement.

copyMatchInfo()

SoElement * SoGLUpdateAreaElement::copyMatchInfo ( void  ) const

virtual

This function creates a copy of the element that contains enough information to enable the matches() function to work.

Used to help with scenegraph traversal caching operations.

Implements SoElement.

set()

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

static

Sets the update area. This can, for instance, be used when rendering in the front buffer, to only render parts of the scene during a window expose event. origin and size is in normalized window coordinates.

get()

SbBool SoGLUpdateAreaElement::get ( SoState *const  state, SbVec2f &  origin, SbVec2f &  size  )

static

Returns the current update area.

See also

set()

getDefaultOrigin()

SbVec2f SoGLUpdateAreaElement::getDefaultOrigin ( void  )

static

Returns the default update area origin, (0,0).

getDefaultSize()

SbVec2f SoGLUpdateAreaElement::getDefaultSize ( void  )

static

Returns the default update area size, (1,1).

Member Data Documentation

origin

SoGLUpdateAreaElement::origin

protected

FIXME: write doc

size

SoGLUpdateAreaElement::size

protected

FIXME: write doc

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

• SoGLUpdateAreaElement.h
• SoGLUpdateAreaElement.cpp