SoLocalBBoxMatrixElement Class Reference

Element that stores the transformation matrix from object space to some local coordinate space during application of an SoGetBoundingBoxAction. More...

#include <Inventor/elements/SoLocalBBoxMatrixElement.h>

Inheritance diagram for SoLocalBBoxMatrixElement:

List of all members.

Public Member Functions
virtual void	init (SoState *state)
	Initializes element.
virtual void	push (SoState *state)
	Overrides push() method to copy values from next instance in the stack.
virtual SbBool	matches (const SoElement *elt) const
	Prints error message and returns FALSE (see class header comment)
virtual SoElement *	copyMatchInfo () const
	Create and return a copy of this element.
virtual void	print (FILE *fp) const
	Prints element (for debugging)
Static Public Member Functions
static void	makeIdentity (SoState *state)
	Sets the local matrix to the identity matrix.
static void	set (SoState *state, const SbMatrix &matrix)
	Sets the local matrix to the given matrix.
static void	mult (SoState *state, const SbMatrix &matrix)
	Multiplies the given matrix into the local matrix.
static void	translateBy (SoState *state, const SbVec3f &translation)
	Each of these multiplies a matrix that performs the specified transformation into the local matrix.
static void	rotateBy (SoState *state, const SbRotation &rotation)
static void	scaleBy (SoState *state, const SbVec3f &scaleFactor)
static SbMatrix	pushMatrix (SoState *state)
	These methods are used by the TransformSeparator node.
static void	popMatrix (SoState *state, const SbMatrix &m)
static void	resetAll (SoState *state)
	Resets all current instances in the state to identity.
static const SbMatrix &	get (SoState *state)
	Returns current matrix from the state.
static void	initClass ()
	Initializes the SoLocalBBoxMatrixElement class.
Protected Member Functions
virtual	~SoLocalBBoxMatrixElement ()
Protected Attributes
SbMatrix	localMatrix

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Detailed Description

This element is needed to allow separators (and other caching nodes) to store cached bounding boxes in their own local space. Shapes that extend the current bounding box computed by the action use this matrix to transform the bounding box into local space. Separators cache this box, then transform it into the next local space up the hierarchy.

Because this element is set to identity by separators before traversing their children, it can never have an affect on any caching separator that it is not under. Therefore, it should never be tested for cache invalidation, so its matches() method prints an error message and returns FALSE. It also means that it does not have to save node id's so there are no nodes passed in to any of the methods.

Definition at line 84 of file SoLocalBBoxMatrixElement.h.

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Constructor & Destructor Documentation

virtual SoLocalBBoxMatrixElement::~SoLocalBBoxMatrixElement

(

)

[protected, virtual]

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Member Function Documentation

virtual SoElement* SoLocalBBoxMatrixElement::copyMatchInfo

(

)

const [virtual]

Implements SoElement.

static const SbMatrix& SoLocalBBoxMatrixElement::get

(

SoState *

state

)

[static]

virtual void SoLocalBBoxMatrixElement::init

(

SoState *

state

)

[virtual]

Reimplemented from SoElement.

static void SoLocalBBoxMatrixElement::initClass

(

)

[static]

Reimplemented from SoElement.

static void SoLocalBBoxMatrixElement::makeIdentity

(

SoState *

state

)

[static]

virtual SbBool SoLocalBBoxMatrixElement::matches

(

const SoElement *

elt

)

const [virtual]

Implements SoElement.

static void SoLocalBBoxMatrixElement::mult	(	SoState *	state,
		const SbMatrix &	matrix
	)		[static]

static void SoLocalBBoxMatrixElement::popMatrix	(	SoState *	state,
		const SbMatrix &	m
	)		[static]

virtual void SoLocalBBoxMatrixElement::print

(

FILE *

fp

)

const [virtual]

Reimplemented from SoElement.

virtual void SoLocalBBoxMatrixElement::push

(

SoState *

state

)

[virtual]

Reimplemented from SoElement.

static SbMatrix SoLocalBBoxMatrixElement::pushMatrix

(

SoState *

state

)

[static]

static void SoLocalBBoxMatrixElement::resetAll

(

SoState *

state

)

[static]

static void SoLocalBBoxMatrixElement::rotateBy	(	SoState *	state,
		const SbRotation &	rotation
	)		[static]

static void SoLocalBBoxMatrixElement::scaleBy	(	SoState *	state,
		const SbVec3f &	scaleFactor
	)		[static]

static void SoLocalBBoxMatrixElement::set	(	SoState *	state,
		const SbMatrix &	matrix
	)		[static]

static void SoLocalBBoxMatrixElement::translateBy	(	SoState *	state,
		const SbVec3f &	translation
	)		[static]

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Member Data Documentation

SbMatrix SoLocalBBoxMatrixElement::localMatrix [protected]

Definition at line 134 of file SoLocalBBoxMatrixElement.h.

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

• MeVis/ThirdParty/Sources/Inventor/inventor/lib/database/include/Inventor/elements/SoLocalBBoxMatrixElement.h