SoReplacedElement - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 4.0.0
Note : Coin
NAMESoReplacedElement − The SoReplacedElement class is an abstract element superclass.
SYNOPSIS
#include <Inventor/elements/SoReplacedElement.h> Inherits SoElement. Inherited by SoAmbientColorElement, SoBumpMapCoordinateElement, SoBumpMapElement, SoCoordinateElement, SoDiffuseColorElement, SoEmissiveColorElement, SoEnvironmentElement, SoFontNameElement, SoGLColorIndexElement, SoGLShaderProgramElement, SoGeoElement, SoLightAttenuationElement, SoListenerDopplerElement, SoListenerOrientationElement, SoListenerPositionElement, SoNormalElement, SoPolygonOffsetElement, SoProfileCoordinateElement, SoProjectionMatrixElement, SoShininessElement, SoSoundElement, SoSpecularColorElement, SoTransparencyElement, SoViewVolumeElement, and SoViewingMatrixElement.
Public Member Functionsvirtual void init (SoState *state)
virtual SbBool matches (const SoElement *element) const
virtual SoElement * copyMatchInfo () const
SbUniqueId getNodeId () const
virtual void print (FILE *file) const
Static Public Member Functionsstatic SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void initClass (void)
Protected Member Functionsvirtual ~SoReplacedElement ()
Static Protected Member Functionsstatic SoElement * getElement (SoState *const state, const int stackIndex, SoNode *const node)
Protected AttributesSbUniqueId nodeId
Additional Inherited Members
Detailed DescriptionThe SoReplacedElement class is an abstract element superclass. This is the superclass of all elements where the new element data replaces the old data, and where the data the element stores is not just a simple float or integer value. Apart from this conceptual difference from its superclass, the SoReplacedElement class also overloads the default getElement() method to include a node reference. This reference is used to fetch the unique node identification number of the node that last changed the element. The identifier values of nodes in the scenegraph is updated upon any kind of change to a node, so this technique plays an important role in the construction, validation and destruction of internal scenegraph caches. See also SoAccumulatedElement
Constructor & Destructor Documentation
SoReplacedElement::~SoReplacedElement (void) [protected], [virtual]Destructor.
Member Function Documentation
void SoReplacedElement::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. Reimplemented in SoViewVolumeElement, SoViewingMatrixElement, SoTransparencyElement, SoSpecularColorElement, SoSoundElement, SoShininessElement, SoProjectionMatrixElement, SoProfileCoordinateElement, SoPolygonOffsetElement, SoNormalElement, SoListenerPositionElement, SoListenerOrientationElement, SoListenerDopplerElement, SoLightAttenuationElement, SoGLViewingMatrixElement, SoGLShaderProgramElement, SoGLPolygonOffsetElement, SoGLNormalElement, SoGLEnvironmentElement, SoGLColorIndexElement, SoGeoElement, SoFontNameElement, SoEnvironmentElement, SoEmissiveColorElement, SoDiffuseColorElement, SoCoordinateElement, SoBumpMapElement, SoBumpMapCoordinateElement, and SoAmbientColorElement.
SbBool SoReplacedElement::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. Reimplemented in SoLightAttenuationElement, SoGLShaderProgramElement, and SoFontNameElement.
SoElement * SoReplacedElement::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. Reimplemented in SoLightAttenuationElement, SoFontNameElement, and SoGLShaderProgramElement.
SbUniqueId SoReplacedElement::getNodeId (void) constReturns the node identifier for the node that previously updated the SoReplacedElement.
void SoReplacedElement::print (FILE * file) const [virtual]This function is for printing element information, and is used mostly for debugging purposes. Reimplemented from SoElement. Reimplemented in SoSoundElement, SoListenerPositionElement, SoListenerOrientationElement, SoListenerDopplerElement, SoLightAttenuationElement, SoFontNameElement, SoEnvironmentElement, and SoCoordinateElement.
SoElement * SoReplacedElement::getElement (SoState *const state, const int stackIndex, SoNode *const node) [static], [protected]This function overloads SoElement::getElement() with an extra node parameter, to let us set the SoReplacedElement::nodeId in the element instance before returning. SoReplacedElement subclasses should use this method to get writable instances. The identifier values of nodes in the scenegraph is updated upon any kind of change to a node, so this technique plays an important role in the construction, validation and destruction of internal scenegraph caches. See also SoElement::getElement()
Member Data Documentation
uint32_t SoReplacedElement::nodeId [protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
AuthorGenerated automatically by Doxygen for Coin from the source code. 0
Johanes Gumabo
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