The SoVRMLTransform class is a grouping node that defines a transformation for its children.The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium: More...

#include <Inventor/VRMLnodes/SoVRMLTransform.h>

Inheritance diagram for SoVRMLTransform:

Public Member Functions
virtual SoType	getTypeId (void) const
	Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and "downward" casting. More...

	SoVRMLTransform (void)

	SoVRMLTransform (int children)

void	pointAt (const SbVec3f &from, const SbVec3f &to)

void	getScaleSpaceMatrix (SbMatrix &matrix, SbMatrix &inverse) const

void	getRotationSpaceMatrix (SbMatrix &matrix, SbMatrix &inverse) const

void	getTranslationSpaceMatrix (SbMatrix &matrix, SbMatrix &inverse) const

void	multLeft (const SbMatrix &matrix)

void	multRight (const SbMatrix &matrix)

void	combineLeft (SoVRMLTransform *leftnode)

void	combineRight (SoVRMLTransform *rightnode)

void	setMatrix (const SbMatrix &matrix)

void	recenter (const SbVec3f &newcenter)

virtual void	doAction (SoAction *action)

virtual void	callback (SoCallbackAction *action)

virtual void	getBoundingBox (SoGetBoundingBoxAction *action)

virtual void	getMatrix (SoGetMatrixAction *action)

virtual void	rayPick (SoRayPickAction *action)

virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)

virtual void	audioRender (SoAudioRenderAction *action)

virtual void	GLRenderBelowPath (SoGLRenderAction *action)

virtual void	GLRenderInPath (SoGLRenderAction *action)

virtual void	notify (SoNotList *list)

Public Member Functions inherited from SoVRMLGroup
	SoVRMLGroup (void)

	SoVRMLGroup (int numChildren)

virtual void	GLRender (SoGLRenderAction *action)

virtual void	search (SoSearchAction *action)

virtual void	write (SoWriteAction *action)

virtual void	GLRenderOffPath (SoGLRenderAction *action)

Public Member Functions inherited from SoVRMLParent
virtual SbBool	affectsState (void) const

virtual void	addChild (SoNode *child)

virtual void	insertChild (SoNode *child, int idx)

virtual SoNode *	getChild (int idx) const

virtual int	findChild (const SoNode *child) const

virtual int	getNumChildren (void) const

virtual void	removeChild (int idx)

virtual void	removeChild (SoNode *child)

virtual void	removeAllChildren (void)

virtual void	replaceChild (int idx, SoNode *child)

virtual void	replaceChild (SoNode old, SoNode child)

virtual SoChildList *	getChildren (void) const

Public Member Functions inherited from SoGroup
	SoGroup (void)

	SoGroup (int nchildren)

virtual void	handleEvent (SoHandleEventAction *action)

virtual void	pick (SoPickAction *action)

Public Member Functions inherited from SoNode
void	setOverride (const SbBool state)

SbBool	isOverride (void) const

void	setNodeType (const NodeType type)

NodeType	getNodeType (void) const

virtual SoNode *	copy (SbBool copyconnections=FALSE) const

virtual void	grabEventsSetup (void)

virtual void	grabEventsCleanup (void)

virtual void	startNotify (void)

uint32_t	getNodeId (void) const

virtual void	writeInstance (SoOutput *out)

virtual SoNode *	addToCopyDict (void) const

virtual SoFieldContainer *	copyThroughConnection (void) const

Public Member Functions inherited from SoFieldContainer
void	setToDefaults (void)

SbBool	hasDefaultValues (void) const

SbBool	fieldsAreEqual (const SoFieldContainer *container) const

void	copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)

SbBool	set (const char *const fielddata)

void	get (SbString &fielddata)

virtual int	getFields (SoFieldList &l) const

virtual int	getAllFields (SoFieldList &l) const

virtual SoField *	getField (const SbName &name) const

virtual SoField *	getEventIn (const SbName &name) const

virtual SoField *	getEventOut (const SbName &name) const

SbBool	getFieldName (const SoField *const field, SbName &name) const

SbBool	enableNotify (const SbBool flag)

SbBool	isNotifyEnabled (void) const

SbBool	set (const char fielddata, SoInput input)

void	get (SbString &fielddata, SoOutput *out)

virtual SbBool	validateNewFieldValue (SoField field, void newval)

virtual void	addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)

SbBool	getIsBuiltIn (void) const

virtual void	getFieldsMemorySize (size_t &managed, size_t &unmanaged) const

void	setUserData (void *userdata) const

void *	getUserData (void) const

Public Member Functions inherited from SoBase
void	ref (void) const

void	unref (void) const

void	unrefNoDelete (void) const

int32_t	getRefCount (void) const

void	touch (void)

SbBool	isOfType (SoType type) const
	Returns `TRUE` if the type of this object is either of the same type or inherited from type. More...

virtual SbName	getName (void) const

virtual void	setName (const SbName &newname)

void	addAuditor (void *const auditor, const SoNotRec::Type type)

void	removeAuditor (void *const auditor, const SoNotRec::Type type)

const SoAuditorList &	getAuditors (void) const

SbBool	shouldWrite (void)

void	assertAlive (void) const

Static Public Member Functions
static SoType	getClassTypeId (void)

static void	initClass (void)

Static Public Member Functions inherited from SoVRMLGroup
static SoType	getClassTypeId (void)

static void	initClass (void)

static void	setNumRenderCaches (int num)

static int	getNumRenderCaches (void)

Static Public Member Functions inherited from SoVRMLParent
static SoType	getClassTypeId (void)

static void	initClass (void)

static void	updateChildList (const SoNode const nodes, const int numnodes, SoChildList &cl)

static void	updateChildList (SoNode *nodewithsfnode, SoChildList &cl)

Static Public Member Functions inherited from SoGroup
static SoType	getClassTypeId (void)

static void	initClass (void)

Static Public Member Functions inherited from SoNode
static uint32_t	getCompatibilityTypes (const SoType &nodetype)

static SoType	getClassTypeId (void)

static SoNode *	getByName (const SbName &name)

static int	getByName (const SbName &name, SoNodeList &l)

static void	initClass (void)

static void	initClasses (void)

static uint32_t	getNextNodeId (void)

static int	getActionMethodIndex (const SoType type)

static void	getBoundingBoxS (SoAction action, SoNode node)

static void	GLRenderS (SoAction action, SoNode node)

static void	callbackS (SoAction action, SoNode node)

static void	getMatrixS (SoAction action, SoNode node)

static void	handleEventS (SoAction action, SoNode node)

static void	pickS (SoAction action, SoNode node)

static void	rayPickS (SoAction action, SoNode node)

static void	searchS (SoAction action, SoNode node)

static void	writeS (SoAction action, SoNode node)

static void	audioRenderS (SoAction action, SoNode node)

static void	getPrimitiveCountS (SoAction action, SoNode node)

Static Public Member Functions inherited from SoFieldContainer
static void	initClass (void)

static SoType	getClassTypeId (void)

static void	cleanupClass (void)

static void	initCopyDict (void)

static void	addCopy (const SoFieldContainer orig, const SoFieldContainer copy)

static SoFieldContainer *	checkCopy (const SoFieldContainer *orig)

static SoFieldContainer *	findCopy (const SoFieldContainer *orig, const SbBool copyconnections)

static void	copyDone (void)

Static Public Member Functions inherited from SoBase
static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

static SoType	getClassTypeId (void)
	This static method returns the SoType object associated with objects of this class.

static void	addName (SoBase const base, const char const name)

static void	removeName (SoBase const base, const char const name)

static void	incrementCurrentWriteCounter (void)

static void	decrementCurrentWriteCounter (void)

static SoBase *	getNamedBase (const SbName &name, SoType type)

static int	getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)

static SbBool	read (SoInput input, SoBase &base, SoType expectedtype)

static void	setInstancePrefix (const SbString &c)

static void	setTraceRefs (SbBool trace)

static SbBool	getTraceRefs (void)

static SbBool	connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)

static SbBool	readRoute (SoInput *input)

Public Attributes
SoSFVec3f	translation

SoSFRotation	rotation

SoSFVec3f	scale

SoSFRotation	scaleOrientation

SoSFVec3f	center

Public Attributes inherited from SoVRMLGroup
SoSFEnum	renderCaching

SoSFEnum	boundingBoxCaching

SoSFEnum	renderCulling

SoSFEnum	pickCulling

SoSFVec3f	bboxCenter

SoSFVec3f	bboxSize

Public Attributes inherited from SoVRMLParent
SoMFNode	children

Protected Member Functions
virtual const SoFieldData *	getFieldData (void) const

virtual	~SoVRMLTransform ()

Protected Member Functions inherited from SoVRMLGroup
virtual	~SoVRMLGroup ()

virtual SbBool	cullTest (SoState *state)

Protected Member Functions inherited from SoVRMLParent
	SoVRMLParent (void)

	SoVRMLParent (int approxchildren)

virtual	~SoVRMLParent ()

virtual SbBool	readInstance (SoInput *in, unsigned short flags)

virtual void	copyContents (const SoFieldContainer *from, SbBool copyConn)

Protected Member Functions inherited from SoGroup
virtual	~SoGroup ()

virtual SbBool	readChildren (SoInput *in)

virtual SoNotRec	createNotRec (void)

void	setOperation (const SoNotRec::OperationType opType=SoNotRec::UNSPECIFIED, const SoNode cc=NULL, const SoNode pc=NULL, const int ci=-1)

Protected Member Functions inherited from SoNode
	SoNode (void)

virtual	~SoNode ()

Protected Member Functions inherited from SoFieldContainer
	SoFieldContainer (void)

virtual	~SoFieldContainer ()

Protected Member Functions inherited from SoBase
	SoBase (void)

virtual	~SoBase ()

virtual void	destroy (void)

SbBool	hasMultipleWriteRefs (void) const

SbBool	writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const

void	writeFooter (SoOutput *out) const

virtual const char *	getFileFormatName (void) const

Static Protected Member Functions
static const SoFieldData **	getFieldDataPtr (void)

Static Protected Member Functions inherited from SoVRMLGroup
static const SoFieldData **	getFieldDataPtr (void)

Static Protected Member Functions inherited from SoVRMLParent
static const SoFieldData **	getFieldDataPtr (void)

Static Protected Member Functions inherited from SoGroup
static const SoFieldData **	getFieldDataPtr (void)

Static Protected Member Functions inherited from SoNode
static const SoFieldData **	getFieldDataPtr (void)

static void	setNextActionMethodIndex (int index)

static int	getNextActionMethodIndex (void)

static void	incNextActionMethodIndex (void)

static void	setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)

Static Protected Member Functions inherited from SoBase
static uint32_t	getCurrentWriteCounter (void)

static void	staticDataLock (void)

static void	staticDataUnlock (void)

Additional Inherited Members
Public Types inherited from SoVRMLGroup
enum	CacheEnabled { OFF, ON, AUTO }

Public Types inherited from SoNode
enum	NodeType { INVENTOR = 0x0000, VRML1 = 0x0001, VRML2 = 0x0002, INVENTOR_1 = 0x0004, INVENTOR_2_0 = 0x0008, INVENTOR_2_1 = 0x0010, INVENTOR_2_5 = 0x0020, INVENTOR_2_6 = 0x0040, COIN_1_0 = 0x0080, COIN_2_0 = 0x0100, EXTENSION = 0x0200, COIN_2_2 = 0x0400, COIN_2_3 = 0x0800, COIN_2_4 = 0x1000, INVENTOR_5_0 = 0x2000, COIN_2_5 = 0x4000, COIN_3_0 = 0x8000, INVENTOR_6_0 = 0x10000, COIN_4_0 = 0x20000 }

Protected Types inherited from SoBase
enum	BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }

Protected Attributes inherited from SoVRMLParent
SoMFNode	addChildren

SoMFNode	removeChildren

Protected Attributes inherited from SoGroup
SoChildList *	children

Protected Attributes inherited from SoNode
uint32_t	uniqueId

Protected Attributes inherited from SoFieldContainer
SbBool	isBuiltIn

Static Protected Attributes inherited from SoVRMLGroup
static int	numRenderCaches = 2

Static Protected Attributes inherited from SoNode
static uint32_t	nextUniqueId = 1

static int	nextActionMethodIndex = 0

Detailed Description

The SoVRMLTransform class is a grouping node that defines a transformation for its children.

The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium:

Transform {
  eventIn      MFNode      addChildren
  eventIn      MFNode      removeChildren
  exposedField SFVec3f     center           0 0 0    # (-inf,inf)
  exposedField MFNode      children         []
  exposedField SFRotation  rotation         0 0 1 0  # [-1,1],(-inf,inf)
  exposedField SFVec3f     scale            1 1 1    # (0,inf)
  exposedField SFRotation  scaleOrientation 0 0 1 0  # [-1,1],(-inf,inf)
  exposedField SFVec3f     translation      0 0 0    # (-inf,inf)
  field        SFVec3f     bboxCenter       0 0 0    # (-inf,inf)
  field        SFVec3f     bboxSize         -1 -1 -1 # (0,inf) or -1,-1,-1
}

The Transform node is a grouping node that defines a coordinate system for its children that is relative to the coordinate systems of its ancestors. See 4.4.4, Transformation hierarchy (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.4.4), and 4.4.5, Standard units and coordinate system (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.4.5), for a description of coordinate systems and transformations.

4.6.5, Grouping and children nodes (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.5), provides a description of the children, addChildren, and removeChildren fields and eventIns.

The bboxCenter and bboxSize fields specify a bounding box that encloses the children of the Transform node. This is a hint that may be used for optimization purposes. The results are undefined if the specified bounding box is smaller than the actual bounding box of the children at any time. A default bboxSize value, (-1, -1, -1), implies that the bounding box is not specified and, if needed, shall be calculated by the browser. The bounding box shall be large enough at all times to enclose the union of the group's children's bounding boxes; it shall not include any transformations performed by the group itself (i.e., the bounding box is defined in the local coordinate system of the children). The results are undefined if the specified bounding box is smaller than the true bounding box of the group. A description of the bboxCenter and bboxSize fields is provided in 4.6.4, Bounding boxes (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.4).

The translation, rotation, scale, scaleOrientation and center fields define a geometric 3D transformation consisting of (in order):

a (possibly) non-uniform scale about an arbitrary point;
a rotation about an arbitrary point and axis;
a translation.

The center field specifies a translation offset from the origin of the local coordinate system (0,0,0). The rotation field specifies a rotation of the coordinate system. The scale field specifies a non-uniform scale of the coordinate system. scale values shall be greater than zero. The scaleOrientation specifies a rotation of the coordinate system before the scale (to specify scales in arbitrary orientations). The scaleOrientation applies only to the scale operation. The translation field specifies a translation to the coordinate system.

Given a 3-dimensional point P and Transform node, P is transformed into point P' in its parent's coordinate system by a series of intermediate transformations. In matrix transformation notation, where C (center), SR (scaleOrientation), T (translation), R (rotation), and S (scale) are the equivalent transformation matrices,

P' = T × C × R × SR × S × -SR × -C × P

The following Transform node:

Transform {
  center           C
  rotation         R
  scale            S
  scaleOrientation SR
  translation      T
  children         [...]
}

is equivalent to the nested sequence of:

Transform {
  translation T
  children Transform {
    translation C
    children Transform {
      rotation R
      children Transform {
        rotation SR
        children Transform {
          scale S
          children Transform {
            rotation -SR
            children Transform {
              translation -C
              children [...]
            }
          }
        }
      }
    }
  }
}

Constructor & Destructor Documentation

SoVRMLTransform::SoVRMLTransform ( void )

Constructor.

SoVRMLTransform::SoVRMLTransform ( int numchildren )

Constructor. numchildren is the expected number of children.

SoVRMLTransform::~SoVRMLTransform ( )

protectedvirtual

Destructor

Member Function Documentation

SoType SoVRMLTransform::getTypeId ( void ) const

virtual

Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and "downward" casting.

Usage example:

void foo(SoNode * node)
{
  if (node->getTypeId() == SoFile::getClassTypeId()) {
    SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
  }
}

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.

Reimplemented from SoVRMLGroup.

const SoFieldData * SoVRMLTransform::getFieldData ( void ) const

protectedvirtual

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::pointAt	(	const SbVec3f &	from,
		const SbVec3f &	to
	)

Sets the transformation to translate to frompoint, with a rotation so that the (0,0,-1) vector is rotated into the vector from frompoint to topoint.

void SoVRMLTransform::getScaleSpaceMatrix	(	SbMatrix &	matrix,
		SbMatrix &	inverse
	)		const

Calculates the matrices to/from scale space.

void SoVRMLTransform::getRotationSpaceMatrix	(	SbMatrix &	matrix,
		SbMatrix &	inverse
	)		const

Calculates the matrices to/from rotation space.

void SoVRMLTransform::getTranslationSpaceMatrix	(	SbMatrix &	matrix,
		SbMatrix &	inverse
	)		const

Calculates the matrices to/from translation space.

void SoVRMLTransform::multLeft ( const SbMatrix & matrix )

Premultiplies this transformation by mat.

void SoVRMLTransform::multRight ( const SbMatrix & matrix )

Postmultiplies this transformation by mat.

void SoVRMLTransform::combineLeft ( SoVRMLTransform * leftnode )

Premultiplies this transformation by the transformation in leftnode.

void SoVRMLTransform::combineRight ( SoVRMLTransform * rightnode )

Postmultiplies this transformation by the transformation in rightnode.

void SoVRMLTransform::setMatrix ( const SbMatrix & matrix )

Sets the fields to create a transformation equal to mat.

void SoVRMLTransform::recenter ( const SbVec3f & newcenter )

Sets the center field to newcenter. This might affect one or more of the other fields.

void SoVRMLTransform::doAction ( SoAction * action )

virtual

This function performs the typical operation of a node for any action.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::callback ( SoCallbackAction * action )

virtual

Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::getBoundingBox ( SoGetBoundingBoxAction * action )

virtual

Action method for the SoGetBoundingBoxAction.

Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

Nodes influencing how geometry nodes calculates their bounding box also overrides this method to change the relevant state variables.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::getMatrix ( SoGetMatrixAction * action )

virtual

Action method for SoGetMatrixAction.

Updates action by accumulating with the transformation matrix of this node (if any).

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::rayPick ( SoRayPickAction * action )

virtual

Action method for SoRayPickAction.

Checks the ray specification of the action and tests for intersection with the data of the node.

Nodes influencing relevant state variables for how picking is done also overrides this method.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::getPrimitiveCount ( SoGetPrimitiveCountAction * action )

virtual

Action method for the SoGetPrimitiveCountAction.

Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action.

Nodes influencing how geometry nodes calculates their primitive count also overrides this method to change the relevant state variables.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::audioRender ( SoAudioRenderAction * action )

virtual

Action method for SoAudioRenderAction.

Does common processing for SoAudioRenderAction action instances.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::GLRenderBelowPath ( SoGLRenderAction * action )

virtual

Implements the SoAction::BELOW_PATH traversal method for the rendering action.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::GLRenderInPath ( SoGLRenderAction * action )

virtual

Implements the SoAction::IN_PATH traversal method for the rendering action.

Reimplemented from SoVRMLGroup.

void SoVRMLTransform::notify ( SoNotList * l )

virtual

Notifies all auditors for this instance when changes are made.

Reimplemented from SoVRMLGroup.

Member Data Documentation

SoSFVec3f SoVRMLTransform::translation

The translation vector. Default value is (0, 0, 0).

SoSFRotation SoVRMLTransform::rotation

The rotation around the center point. Default value is null-rotation.

SoSFVec3f SoVRMLTransform::scale

The scale vector about the center point. Default value is (1, 1, 1).

SoSFRotation SoVRMLTransform::scaleOrientation

The scale orientation. Default value is a null-rotation.

SoSFVec3f SoVRMLTransform::center

The center point. Default value is (0, 0, 0).

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

SoVRMLTransform.h
Transform.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation