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This is the superclass of elements where new element data accumulates with older data. More...
#include <Inventor/elements/SoAccumulatedElement.h>
Public Member Functions | |
virtual SbBool | matches (const SoElement *element) const |
Static Public Member Functions | |
static SoType | getClassTypeId (void) |
static int | getClassStackIndex (void) |
static void | initClass (void) |
Protected Member Functions | |
void | init (SoState *state) |
void | push (SoState *state) |
void | clearNodeIds (void) |
void | addNodeId (const SoNode *const node) |
void | setNodeId (const SoNode *const node) |
void | copyNodeIds (const SoAccumulatedElement *copyfrom) |
virtual SoElement * | copyMatchInfo (void) const |
virtual void | captureThis (SoState *state) const |
Protected Attributes | |
SbList< uint32_t > | nodeIds |
This is the superclass of elements where new element data accumulates with older data.
The element stores node id values for all nodes accumulated during traversal for the current state. These id values are used to determine when to invalidate caches.
SoType SoAccumulatedElement::getClassTypeId | ( | void | ) | [static] |
This static method returns the class type.
Reimplemented from SoElement.
int SoAccumulatedElement::getClassStackIndex | ( | void | ) | [static] |
This static method returns the state stack index for the class.
Reimplemented from SoElement.
void SoAccumulatedElement::initClass | ( | void | ) | [static] |
Initialize relevant common data for all instances, like the type system.
Reimplemented from SoElement.
SbBool SoAccumulatedElement::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.
References nodeIds.
void SoAccumulatedElement::init | ( | SoState * | state | ) | [protected, 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.
References SoElement::init().
void SoAccumulatedElement::push | ( | SoState * | state | ) | [protected, 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.
References SoElement::push().
void SoAccumulatedElement::clearNodeIds | ( | void | ) | [protected] |
Empty the list of node ids.
References nodeIds, and SbList< Type >::truncate().
Referenced by setNodeId().
void SoAccumulatedElement::addNodeId | ( | const SoNode *const | node | ) | [protected] |
Add the node id of node to the list of node ids.
References SbList< Type >::append(), SoNode::getNodeId(), and nodeIds.
Referenced by setNodeId().
void SoAccumulatedElement::setNodeId | ( | const SoNode *const | node | ) | [protected] |
Empty the list of node ids, and add the id of node.
References addNodeId(), and clearNodeIds().
void SoAccumulatedElement::copyNodeIds | ( | const SoAccumulatedElement * | copyfrom | ) | [protected] |
Convenience method which copies the node ids from copyfrom to this element.
This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.
References nodeIds.
Referenced by copyMatchInfo().
SoElement * SoAccumulatedElement::copyMatchInfo | ( | void | ) | const [protected, 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.
References copyNodeIds(), SoType::createInstance(), and SoElement::getTypeId().
void SoAccumulatedElement::captureThis | ( | SoState * | state | ) | const [protected, virtual] |
Adds the element to the cache.
Reimplemented from SoElement.
References captureThis(), SoElement::captureThis(), and SoElement::getNextInStack().
Referenced by captureThis().
SoAccumulatedElement::nodeIds [protected] |
Stores the internal list of node id values for nodes accumulated on the stack for the element.
Referenced by addNodeId(), clearNodeIds(), copyNodeIds(), and matches().
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