SoLocalBBoxMatrixElement Class Reference

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:

Public Member Functions
virtual void	push (SoState *state)
	Overrides push() method to copy values from next instance in the stack.
virtual void	print (FILE *fp) const
	Prints element (for debugging).
Public Member Functions inherited from SoElement
virtual void	pop (SoState *state, const SoElement *prevTopElement)
	Pops element.
virtual SoType	getTypeId () const
	Returns type identifier for element instance.
Public Member Functions inherited from SoTypedObject
SbBool	isOfType (const SoType &type) const
	Returns TRUE if this object is of the type specified in type or is derived from that type.
template<typename TypedObjectClass >
SbBool	isOfType () const
	Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class.

Static Public Member Functions
static SoType	getClassTypeId ()
	Returns the type identifier for this class.
static int	getClassStackIndex ()
	Returns the stack id for this element.
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)
	Multiplies a matrix that performs the specified transformation into the local matrix.
static void	rotateBy (SoState *state, const SbRotation &rotation)
	Multiplies a matrix that performs the specified transformation into the local matrix.
static void	scaleBy (SoState *state, const SbVec3f &scaleFactor)
	Multiplies a matrix that performs the specified transformation into the local matrix.
static SbMatrix	pushMatrix (SoState *state)
	This method is used by the TransformSeparator node.
static void	popMatrix (SoState *state, const SbMatrix &m)
	This method is used by the TransformSeparator node.
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 Public Member Functions inherited from SoElement
static SoType	getClassTypeId ()
	Returns type identifier for SoElement class.
Static Public Member Functions inherited from SoTypedObject
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Detailed Description

Stores the transformation matrix from object space to some local coordinate space during application of an SoGetBoundingBoxAction.

This element stores the transformation matrix from object space to some local coordinate space during application of an SoGetBoundingBoxAction. 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.

SEE ALSO

Definition at line 83 of file SoLocalBBoxMatrixElement.h.

Member Function Documentation

get()

static const SbMatrix & SoLocalBBoxMatrixElement::get ( SoState *  state )

static

Returns current matrix from the state.

getClassStackIndex()

static int SoLocalBBoxMatrixElement::getClassStackIndex ( )

static

Returns the stack id for this element.

getClassTypeId()

static SoType SoLocalBBoxMatrixElement::getClassTypeId ( )

static

Returns the type identifier for this class.

makeIdentity()

static void SoLocalBBoxMatrixElement::makeIdentity ( SoState *  state )

static

Sets the local matrix to the identity matrix.

mult()

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

static

Multiplies the given matrix into the local matrix.

popMatrix()

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

static

This method is used by the TransformSeparator node.

print()

virtual void SoLocalBBoxMatrixElement::print ( FILE *  fp ) const

virtual

Prints element (for debugging).

Reimplemented from SoElement.

push()

virtual void SoLocalBBoxMatrixElement::push ( SoState *  state )

virtual

Overrides push() method to copy values from next instance in the stack.

Reimplemented from SoElement.

pushMatrix()

static SbMatrix SoLocalBBoxMatrixElement::pushMatrix ( SoState *  state )

static

This method is used by the TransformSeparator node.

resetAll()

static void SoLocalBBoxMatrixElement::resetAll ( SoState *  state )

static

Resets all current instances in the state to identity.

rotateBy()

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

static

Multiplies a matrix that performs the specified transformation into the local matrix.

scaleBy()

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

static

Multiplies a matrix that performs the specified transformation into the local matrix.

set()

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

static

Sets the local matrix to the given matrix.

translateBy()

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

static

Multiplies a matrix that performs the specified transformation into the local matrix.

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

• Inventor/elements/SoLocalBBoxMatrixElement.h