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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 SoElementcopyMatchInfo () 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)
SoElementgetNextInStack (void) const
SoElementgetNextFree (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 SoElementgetElement (SoState *const state, const int stackIndex)
static const SoElementgetConstElement (SoState *const state, const int stackIndex)
static int createStackIndex (const SoType id)
- Static Protected Attributes inherited from SoElement
static int classStackIndex
static SoTypeListstackToType

Detailed Description

The SoGLUpdateAreaElement class is yet to be documented.

FIXME: write doc.

Constructor & Destructor Documentation

◆ ~SoGLUpdateAreaElement()

SoGLUpdateAreaElement::~SoGLUpdateAreaElement ( )

The destructor.

Member Function Documentation

◆ createInstance()

void * SoGLUpdateAreaElement::createInstance ( void  )

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  )

This static method initializes static data for the SoGLUpdateAreaElement class.

◆ init()

void SoGLUpdateAreaElement::init ( SoState state)

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)

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 

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

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

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 

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 

Returns the current update area.

See also

◆ getDefaultOrigin()

SbVec2f SoGLUpdateAreaElement::getDefaultOrigin ( void  )

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

◆ getDefaultSize()

SbVec2f SoGLUpdateAreaElement::getDefaultSize ( void  )

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

Member Data Documentation

◆ origin


FIXME: write doc

◆ size


FIXME: write doc

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