SoCacheElement Class Reference
Element Classes

The SoCacheElement class stores and manages the open caches. More...

`#include <Inventor/elements/SoCacheElement.h>`

Inheritance diagram for SoCacheElement:

## Public Member Functions

virtual void | init (SoState *state)
virtual void | push (SoState *state)
virtual void | pop (SoState *state, const SoElement *prevTopElement)
SoCache * | getCache (void) const
virtual SbBool | matches (const SoElement *element) const
virtual SoElement * | copyMatchInfo (void) const
SoCacheElement * | getNextCacheElement (void) 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, SoCache *const cache)
static SbBool | anyOpen (SoState *const state)
static void | invalidate (SoState *const state)
static void | addElement (SoState *const state, const SoElement *const element)
static void | addCacheDependency (SoState *const state, SoCache *const cache)
static SbBool | setInvalid (const SbBool newvalue)
static SoCache * | getCurrentCache (SoState *const state)
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 | ~SoCacheElement ()
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

## 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)
Protected Attributes inherited from SoElement
SoType | typeId
int | stackIndex
int | depth
Static Protected Attributes inherited from SoElement
static int | classStackIndex
static SoTypeList * | stackToType

## Detailed Description

The SoCacheElement class stores and manages the open caches.

## Constructor & Destructor Documentation

## ~SoCacheElement()

SoCacheElement::~SoCacheElement | ( | void |  | ) |

protected virtual

Destructor.

## Member Function Documentation

## getClassTypeId()

SoType SoCacheElement::getClassTypeId | ( | void |  | ) |

static

This static method returns the SoType object associated with objects of this class.

## getClassStackIndex()

int SoCacheElement::getClassStackIndex | ( | void |  | ) |

static

This static method returns the state stack index for the class.

## createInstance()

void * SoCacheElement::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.
Creates a new instance of the class type corresponding to the SoType object.

## initClass()

void SoCacheElement::initClass | ( | void |  | ) |

static

Initialize relevant common data for all instances, like the type system.

## init()

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

virtual

This method is called 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.

## set()

void SoCacheElement::set | ( | SoState *const | state,
|  | SoCache *const | cache )

static

Sets the current cache. The cache is ref'ed before returning.

## getCache()

SoCache * SoCacheElement::getCache | ( | void |  | ) | const

This method returns the cache, or NULL if there is no cache.

## anyOpen()

SbBool SoCacheElement::anyOpen | ( | SoState *const | state | ) |

static

This method returns TRUE if a cache is currently open.

## invalidate()

void SoCacheElement::invalidate | ( | SoState *const | state | ) |

static

This method invalidates open caches. It should be called by uncacheable nodes.

## matches()

SbBool SoCacheElement::matches | ( | const SoElement * | element | ) | const

virtual

SoCacheElement objects should not be compared because you obviously don't cache them in the cache.

Implements SoElement.

## copyMatchInfo()

SoElement * SoCacheElement::copyMatchInfo | ( | void |  | ) | const

virtual

SoCacheElement objects should not be "copied" because you obviously don't cache them in the cache.

See also
  SbBool SoCacheElement::matches(const SoElement * element) const

Implements SoElement.

## getNextCacheElement()

SoCacheElement * SoCacheElement::getNextCacheElement | ( | void |  | ) | const

This method returns the next cache element. That is the next cache element pointing towards the bottom of the state.

## addElement()

void SoCacheElement::addElement | ( | SoState *const | state,
|  | const SoElement *const | element )

static

This method adds element to the elements used lists of all the open caches in state.

## addCacheDependency()

void SoCacheElement::addCacheDependency | ( | SoState *const | state,
|  | SoCache *const | cache )

static

This method creates dependencies on cache for all the open caches in state.

## setInvalid()

SbBool SoCacheElement::setInvalid | ( | const SbBool | newvalue | ) |

static

This method returns the old invalidated bit value, and sets it to newvalue.

## getCurrentCache()

SoCache * SoCacheElement::getCurrentCache | ( | SoState *const | state | ) |

static

This method returns the current cache. No cache dependencies are honored.

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

- SoCacheElement.h
- SoCacheElement.cpp