SoFloatElement Class Reference

SoFloatElement is an abstract base class for elements that consists of a single float value.This is the superclass of elements where the new element data replaces the old data, and where the data the element stores is a simple single precision floating point value. More...

#include <Inventor/elements/SoFloatElement.h>

Inheritance diagram for SoFloatElement:

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

Static Public Member Functions
static SoType	getClassTypeId (void)
static int	getClassStackIndex (void)
static void	initClass (void)
static void	set (const int stackIndex, SoState *const state, SoNode *const node, const float value)
static void	set (const int stackIndex, SoState *const state, const float value)
static float	get (const int stackIndex, 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	~SoFloatElement ()
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
float	data
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

SoFloatElement is an abstract base class for elements that consists of a single float value.

This is the superclass of elements where the new element data replaces the old data, and where the data the element stores is a simple single precision floating point value.

This element is like a convenient light-weight version of the SoReplacedElement. It differs from the SoReplacedElement in that the set() and get() methods are already implemented, since it is known that subclasses will still contain just a single float value.

See also

SoReplacedElement, SoInt32Element, SoAccumulatedElement

Constructor & Destructor Documentation

SoFloatElement::~SoFloatElement ( void  )

protectedvirtual

Destructor.

Member Function Documentation

void SoFloatElement::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 SoGLPointSizeElement, SoComplexityElement, SoCreaseAngleElement, SoDecimationPercentageElement, SoFocalDistanceElement, SoFontSizeElement, SoGLLineWidthElement, SoLineWidthElement, SoListenerGainElement, SoPointSizeElement, and SoTextureQualityElement.

SbBool SoFloatElement::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.

SoElement * SoFloatElement::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.

void SoFloatElement::print ( FILE *  file ) const

virtual

This function is for printing element information, and is used mostly for debugging purposes.

Reimplemented from SoElement.

void SoFloatElement::set ( const int  stackIndex, SoState *const  state, const float  value  )

static

Static method for setting the value of an element in the given state at the given stackIndex.

float SoFloatElement::get ( const int  index, SoState *const  state  )

static

Static method to fetch the value of the element of this type from the given state at the given stack index.

void SoFloatElement::setElt ( float  value )

virtual

Set element value.

Reimplemented in SoGLPointSizeElement, and SoGLLineWidthElement.

Member Data Documentation

float SoFloatElement::data

protected

The element's value.

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

• SoFloatElement.h
• SoFloatElement.cpp