#include <Transform>

Inheritance diagram for osg::Transform:

Public Types
enum	ReferenceFrame { RELATIVE_RF , ABSOLUTE_RF , ABSOLUTE_RF_INHERIT_VIEWPOINT }
Public Types inherited from osg::Node
typedef std::vector< Group * >	ParentList
typedef unsigned int	NodeMask
typedef std::vector< std::string >	DescriptionList
Public Types inherited from osg::Object
enum	DataVariance { DYNAMIC , STATIC , UNSPECIFIED }

Public Member Functions
	Transform ()
	Transform (const Transform &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	META_Node (osg, Transform)
virtual Transform *	asTransform ()
virtual const Transform *	asTransform () const
virtual MatrixTransform *	asMatrixTransform ()
virtual const MatrixTransform *	asMatrixTransform () const
virtual PositionAttitudeTransform *	asPositionAttitudeTransform ()
virtual const PositionAttitudeTransform *	asPositionAttitudeTransform () const
virtual AutoTransform *	asAutoTransform ()
virtual const AutoTransform *	asAutoTransform () const
void	setReferenceFrame (ReferenceFrame rf)
ReferenceFrame	getReferenceFrame () const
virtual bool	computeLocalToWorldMatrix (Matrix &matrix, NodeVisitor *) const
virtual bool	computeWorldToLocalMatrix (Matrix &matrix, NodeVisitor *) const
virtual BoundingSphere	computeBound () const
Public Member Functions inherited from osg::Group
	Group ()
	Group (const Group &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	META_Node (osg, Group)
virtual Group *	asGroup ()
virtual const Group *	asGroup () const
virtual void	traverse (NodeVisitor &nv)
virtual bool	addChild (Node *child)
template<class T>
bool	addChild (const ref_ptr< T > &child)
virtual bool	insertChild (unsigned int index, Node *child)
template<class T>
bool	insertChild (unsigned int index, const ref_ptr< T > &child)
virtual bool	removeChild (Node *child)
template<class T>
bool	removeChild (const ref_ptr< T > &child)
bool	removeChild (unsigned int pos, unsigned int numChildrenToRemove=1)
virtual bool	removeChildren (unsigned int pos, unsigned int numChildrenToRemove)
virtual bool	replaceChild (Node origChild, Node newChild)
template<class T, class R>
bool	replaceChild (const ref_ptr< T > &origChild, const ref_ptr< R > &newChild)
virtual unsigned int	getNumChildren () const
virtual bool	setChild (unsigned int i, Node *node)
Node *	getChild (unsigned int i)
const Node *	getChild (unsigned int i) const
bool	containsNode (const Node *node) const
template<class T>
bool	containsNode (const ref_ptr< T > &node) const
unsigned int	getChildIndex (const Node *node) const
virtual void	setThreadSafeRefUnref (bool threadSafe)
virtual void	resizeGLObjectBuffers (unsigned int maxSize)
virtual void	releaseGLObjects (osg::State *=0) const
Public Member Functions inherited from osg::Node
	Node ()
	Node (const Node &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
virtual Object *	cloneType () const
virtual Object *	clone (const CopyOp &copyop) const
virtual bool	isSameKindAs (const Object *obj) const
virtual const char *	libraryName () const
virtual const char *	className () const
virtual Node *	asNode ()
virtual const Node *	asNode () const
virtual Drawable *	asDrawable ()
virtual const Drawable *	asDrawable () const
virtual Geometry *	asGeometry ()
virtual const Geometry *	asGeometry () const
virtual Switch *	asSwitch ()
virtual const Switch *	asSwitch () const
virtual Geode *	asGeode ()
virtual const Geode *	asGeode () const
virtual osgTerrain::Terrain *	asTerrain ()
virtual const osgTerrain::Terrain *	asTerrain () const
virtual void	accept (NodeVisitor &nv)
virtual void	ascend (NodeVisitor &nv)
const ParentList &	getParents () const
ParentList	getParents ()
Group *	getParent (unsigned int i)
const Group *	getParent (unsigned int i) const
unsigned int	getNumParents () const
NodePathList	getParentalNodePaths (osg::Node *haltTraversalAtNode=0) const
MatrixList	getWorldMatrices (const osg::Node *haltTraversalAtNode=0) const
void	setUpdateCallback (Callback *nc)
template<class T>
void	setUpdateCallback (const ref_ptr< T > &nc)
Callback *	getUpdateCallback ()
const Callback *	getUpdateCallback () const
void	addUpdateCallback (Callback *nc)
template<class T>
void	addUpdateCallback (const ref_ptr< T > &nc)
void	removeUpdateCallback (Callback *nc)
template<class T>
void	removeUpdateCallback (const ref_ptr< T > &nc)
unsigned int	getNumChildrenRequiringUpdateTraversal () const
void	setEventCallback (Callback *nc)
template<class T>
void	setEventCallback (const ref_ptr< T > &nc)
Callback *	getEventCallback ()
const Callback *	getEventCallback () const
void	addEventCallback (Callback *nc)
template<class T>
void	addEventCallback (const ref_ptr< T > &nc)
void	removeEventCallback (Callback *nc)
template<class T>
void	removeEventCallback (const ref_ptr< T > &nc)
unsigned int	getNumChildrenRequiringEventTraversal () const
void	setCullCallback (Callback *nc)
template<class T>
void	setCullCallback (const ref_ptr< T > &nc)
Callback *	getCullCallback ()
const Callback *	getCullCallback () const
void	addCullCallback (Callback *nc)
template<class T>
void	addCullCallback (const ref_ptr< T > &nc)
void	removeCullCallback (Callback *nc)
template<class T>
void	removeCullCallback (const ref_ptr< T > &nc)
void	setCullingActive (bool active)
bool	getCullingActive () const
unsigned int	getNumChildrenWithCullingDisabled () const
bool	isCullingActive () const
unsigned int	getNumChildrenWithOccluderNodes () const
bool	containsOccluderNodes () const
void	setNodeMask (NodeMask nm)
NodeMask	getNodeMask () const
void	setStateSet (osg::StateSet *stateset)
template<class T>
void	setStateSet (const osg::ref_ptr< T > &stateset)
osg::StateSet *	getOrCreateStateSet ()
osg::StateSet *	getStateSet ()
const osg::StateSet *	getStateSet () const
void	setDescriptions (const DescriptionList &descriptions)
DescriptionList &	getDescriptions ()
const DescriptionList &	getDescriptions () const
const std::string &	getDescription (unsigned int i) const
std::string &	getDescription (unsigned int i)
unsigned int	getNumDescriptions () const
void	addDescription (const std::string &desc)
void	setInitialBound (const osg::BoundingSphere &bsphere)
const BoundingSphere &	getInitialBound () const
void	dirtyBound ()
const BoundingSphere &	getBound () const
void	setComputeBoundingSphereCallback (ComputeBoundingSphereCallback *callback)
template<class T>
void	setComputeBoundingSphereCallback (const ref_ptr< T > &callback)
ComputeBoundingSphereCallback *	getComputeBoundingSphereCallback ()
const ComputeBoundingSphereCallback *	getComputeBoundingSphereCallback () const
Public Member Functions inherited from osg::Object
	Object ()
	Object (bool threadSafeRefUnref)
	Object (const Object &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
std::string	getCompoundClassName () const
virtual NodeVisitor *	asNodeVisitor ()
virtual const NodeVisitor *	asNodeVisitor () const
virtual StateSet *	asStateSet ()
virtual const StateSet *	asStateSet () const
virtual StateAttribute *	asStateAttribute ()
virtual const StateAttribute *	asStateAttribute () const
virtual Uniform *	asUniform ()
virtual const Uniform *	asUniform () const
virtual Camera *	asCamera ()
virtual const Camera *	asCamera () const
virtual Callback *	asCallback ()
virtual const Callback *	asCallback () const
virtual CallbackObject *	asCallbackObject ()
virtual const CallbackObject *	asCallbackObject () const
virtual UserDataContainer *	asUserDataContainer ()
virtual const UserDataContainer *	asUserDataContainer () const
virtual ValueObject *	asValueObject ()
virtual const ValueObject *	asValueObject () const
virtual Image *	asImage ()
virtual const Image *	asImage () const
virtual void	setName (const std::string &name)
void	setName (const char *name)
const std::string &	getName () const
void	setDataVariance (DataVariance dv)
DataVariance	getDataVariance () const
virtual void	computeDataVariance ()
void	setUserDataContainer (osg::UserDataContainer *udc)
template<class T>
void	setUserDataContainer (const ref_ptr< T > &udc)
osg::UserDataContainer *	getUserDataContainer ()
const osg::UserDataContainer *	getUserDataContainer () const
osg::UserDataContainer *	getOrCreateUserDataContainer ()
virtual void	setUserData (Referenced *obj)
template<class T>
void	setUserData (const ref_ptr< T > &ud)
virtual Referenced *	getUserData ()
virtual const Referenced *	getUserData () const
template<typename T>
bool	getUserValue (const std::string &name, T &value) const
template<typename T>
void	setUserValue (const std::string &name, const T &value)
template<typename T>
BoolValueObject UCharValueObject UShortValueObject UIntValueObject DoubleValueObject Vec3fValueObject Vec2dValueObject Vec4dValueObject PlaneValueObject MatrixdValueObject BoundingBoxdValueObject BoundingSpheredValueObject bool	getUserValue (const std::string &name, T &value) const
Public Member Functions inherited from osg::Referenced
	Referenced ()
	Referenced (bool threadSafeRefUnref)
	Referenced (const Referenced &)
Referenced &	operator= (const Referenced &)
bool	getThreadSafeRefUnref () const
OpenThreads::Mutex *	getRefMutex () const
int	ref () const
int	unref () const
int	unref_nodelete () const
int	referenceCount () const
ObserverSet *	getObserverSet () const
ObserverSet *	getOrCreateObserverSet () const
void	addObserver (Observer *observer) const
void	removeObserver (Observer *observer) const

Protected Member Functions
virtual	~Transform ()
Protected Member Functions inherited from osg::Group
virtual	~Group ()
virtual void	childRemoved (unsigned int, unsigned int)
virtual void	childInserted (unsigned int)
Protected Member Functions inherited from osg::Node
virtual	~Node ()
void	addParent (osg::Group *parent)
void	removeParent (osg::Group *parent)
void	setNumChildrenRequiringUpdateTraversal (unsigned int num)
void	setNumChildrenRequiringEventTraversal (unsigned int num)
void	setNumChildrenWithCullingDisabled (unsigned int num)
void	setNumChildrenWithOccluderNodes (unsigned int num)
Protected Member Functions inherited from osg::Object
virtual	~Object ()
Protected Member Functions inherited from osg::Referenced
virtual	~Referenced ()
void	signalObserversAndDelete (bool signalDelete, bool doDelete) const
void	deleteUsingDeleteHandler () const

Protected Attributes
ReferenceFrame	_referenceFrame
Protected Attributes inherited from osg::Group
NodeList	_children
Protected Attributes inherited from osg::Node
BoundingSphere	_initialBound
ref_ptr< ComputeBoundingSphereCallback >	_computeBoundCallback
BoundingSphere	_boundingSphere
bool	_boundingSphereComputed
ParentList	_parents
ref_ptr< Callback >	_updateCallback
unsigned int	_numChildrenRequiringUpdateTraversal
ref_ptr< Callback >	_eventCallback
unsigned int	_numChildrenRequiringEventTraversal
ref_ptr< Callback >	_cullCallback
bool	_cullingActive
unsigned int	_numChildrenWithCullingDisabled
unsigned int	_numChildrenWithOccluderNodes
NodeMask	_nodeMask
ref_ptr< StateSet >	_stateset
Protected Attributes inherited from osg::Object
std::string	_name
DataVariance	_dataVariance
osg::UserDataContainer *	_userDataContainer
Protected Attributes inherited from osg::Referenced
OpenThreads::AtomicPtr	_observerSet
OpenThreads::Atomic	_refCount

Additional Inherited Members
Static Public Member Functions inherited from osg::Referenced
static OpenThreads::Mutex *	getGlobalReferencedMutex ()
static void	setDeleteHandler (DeleteHandler *handler)
static DeleteHandler *	getDeleteHandler ()

Detailed Description

A Transform is a group node for which all children are transformed by a 4x4 matrix. It is often used for positioning objects within a scene, producing trackball functionality or for animation.

Transform itself does not provide set/get functions, only the interface for defining what the 4x4 transformation is. Subclasses, such as MatrixTransform and PositionAttitudeTransform support the use of an osg::Matrix or a Vec3 and Quat respectively.

Note: If the transformation matrix scales the subgraph then the normals of the underlying geometry will need to be renormalized to be unit vectors once more. This can be done transparently through OpenGL's use of either GL_NORMALIZE and GL_RESCALE_NORMAL modes. For further background reading see the glNormalize documentation in the OpenGL Reference Guide (the blue book). To enable it in the OSG, you simply need to attach a local osg::StateSet to the osg::Transform, and set the appropriate mode to ON via stateset->setMode(GL_NORMALIZE, osg::StateAttribute::ON);

Member Enumeration Documentation

◆ ReferenceFrame

enum osg::Transform::ReferenceFrame

Enumerator
RELATIVE_RF
ABSOLUTE_RF
ABSOLUTE_RF_INHERIT_VIEWPOINT

Constructor & Destructor Documentation

◆ Transform() [1/2]

osg::Transform::Transform ( )

Referenced by asTransform(), asTransform(), osg::CameraView::CameraView(), META_Node(), osg::PositionAttitudeTransform::PositionAttitudeTransform(), and Transform().

◆ Transform() [2/2]

osg::Transform::Transform	(	const Transform &	,
		const CopyOp &	copyop = CopyOp::SHALLOW_COPY )

Copy constructor using CopyOp to manage deep vs shallow copy.

References osg::CopyOp::SHALLOW_COPY, and Transform().

◆ ~Transform()

virtual osg::Transform::~Transform ( )

protectedvirtual

Member Function Documentation

◆ asAutoTransform() [1/2]

virtual AutoTransform * osg::Transform::asAutoTransform ( )

inlinevirtual

Reimplemented in osg::AutoTransform.

◆ asAutoTransform() [2/2]

virtual const AutoTransform * osg::Transform::asAutoTransform ( ) const

inlinevirtual

Reimplemented in osg::AutoTransform.

◆ asMatrixTransform() [1/2]

virtual MatrixTransform * osg::Transform::asMatrixTransform ( )

inlinevirtual

Reimplemented in osg::MatrixTransform.

◆ asMatrixTransform() [2/2]

virtual const MatrixTransform * osg::Transform::asMatrixTransform ( ) const

inlinevirtual

Reimplemented in osg::MatrixTransform.

◆ asPositionAttitudeTransform() [1/2]

virtual PositionAttitudeTransform * osg::Transform::asPositionAttitudeTransform ( )

inlinevirtual

Reimplemented in osg::PositionAttitudeTransform.

◆ asPositionAttitudeTransform() [2/2]

virtual const PositionAttitudeTransform * osg::Transform::asPositionAttitudeTransform ( ) const

inlinevirtual

Reimplemented in osg::PositionAttitudeTransform.

◆ asTransform() [1/2]

virtual Transform * osg::Transform::asTransform ( )

inlinevirtual

Convert 'this' into a Transform pointer if Node is a Transform, otherwise return 0. Equivalent to dynamic_cast<Transform*>(this).

Reimplemented from osg::Node.

References Transform().

◆ asTransform() [2/2]

virtual const Transform * osg::Transform::asTransform ( ) const

inlinevirtual

convert 'const this' into a const Transform pointer if Node is a Transform, otherwise return 0. Equivalent to dynamic_cast<const Transform*>(this).

Reimplemented from osg::Node.

References Transform().

◆ computeBound()

virtual BoundingSphere osg::Transform::computeBound ( ) const

virtual

Overrides Group's computeBound. There is no need to override in subclasses from osg::Transform since this computeBound() uses the underlying matrix (calling computeMatrix if required).

Reimplemented from osg::Group.

◆ computeLocalToWorldMatrix()

virtual bool osg::Transform::computeLocalToWorldMatrix	(	Matrix &	matrix,
		NodeVisitor *	) const

inlinevirtual

Reimplemented in osg::AutoTransform, osg::Camera, osg::CameraView, osg::MatrixTransform, osg::PositionAttitudeTransform, osgManipulator::AntiSquish, osgPresentation::HUDTransform, osgPresentation::Timeout, and osgSim::DOFTransform.

References _referenceFrame, osg::Matrixd::makeIdentity(), and RELATIVE_RF.

◆ computeWorldToLocalMatrix()

virtual bool osg::Transform::computeWorldToLocalMatrix	(	Matrix &	matrix,
		NodeVisitor *	) const

inlinevirtual

Reimplemented in osg::AutoTransform, osg::Camera, osg::CameraView, osg::MatrixTransform, osg::PositionAttitudeTransform, osgManipulator::AntiSquish, osgPresentation::HUDTransform, osgPresentation::Timeout, and osgSim::DOFTransform.

References _referenceFrame, osg::Matrixd::makeIdentity(), and RELATIVE_RF.

◆ getReferenceFrame()

ReferenceFrame osg::Transform::getReferenceFrame ( ) const

inline

References _referenceFrame.

◆ META_Node()

osg::Transform::META_Node	(	osg	,
		Transform	)

References Transform().

◆ setReferenceFrame()

void osg::Transform::setReferenceFrame ( ReferenceFrame rf )

Set the transform's ReferenceFrame, either to be relative to its parent reference frame, or relative to an absolute coordinate frame. RELATIVE_RF is the default. Note: Setting the ReferenceFrame to be ABSOLUTE_RF will also set the CullingActive flag on the transform, and hence all of its parents, to false, thereby disabling culling of it and all its parents. This is necessary to prevent inappropriate culling, but may impact cull times if the absolute transform is deep in the scene graph. It is therefore recommended to only use absolute Transforms at the top of the scene, for such things as heads up displays. ABSOLUTE_RF_INHERIT_VIEWPOINT is the same as ABSOLUTE_RF except it adds the ability to use the parents view points position in world coordinates as its local viewpoint in the new coordinates frame. This is useful for Render to texture Cameras that wish to use the main views LOD range computation (which uses the viewpoint rather than the eye point) rather than use the local eye point defined by the this Transforms' absolute view matrix.

Member Data Documentation

◆ _referenceFrame

ReferenceFrame osg::Transform::_referenceFrame

protected

Referenced by computeLocalToWorldMatrix(), computeWorldToLocalMatrix(), and getReferenceFrame().

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

Transform

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ ReferenceFrame

Constructor & Destructor Documentation

◆ Transform() [1/2]

◆ Transform() [2/2]

◆ ~Transform()

Member Function Documentation

◆ asAutoTransform() [1/2]

◆ asAutoTransform() [2/2]

◆ asMatrixTransform() [1/2]

◆ asMatrixTransform() [2/2]

◆ asPositionAttitudeTransform() [1/2]

◆ asPositionAttitudeTransform() [2/2]

◆ asTransform() [1/2]

◆ asTransform() [2/2]

◆ computeBound()

◆ computeLocalToWorldMatrix()

◆ computeWorldToLocalMatrix()

◆ getReferenceFrame()

◆ META_Node()

◆ setReferenceFrame()

Member Data Documentation

◆ _referenceFrame