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SoTransform Class Reference

The SoTransform class is the "all-purpose" transformation node type. More...

#include <Inventor/nodes/SoTransform.h>

Inheritance diagram for SoTransform::

List of all members.

Public Methods
	SoTransform (void)
void	pointAt (const SbVec3f &frompoint, const SbVec3f &topoint)
void	getScaleSpaceMatrix (SbMatrix &mat, SbMatrix &inv) const
void	getRotationSpaceMatrix (SbMatrix &mat, SbMatrix &inv) const
void	getTranslationSpaceMatrix (SbMatrix &mat, SbMatrix &inv) const
void	multLeft (const SbMatrix &mat)
void	multRight (const SbMatrix &mat)
void	combineLeft (SoTransformation *nodeonright)
void	combineRight (SoTransformation *nodeonleft)
void	setMatrix (const SbMatrix &mat)
void	recenter (const SbVec3f &newcenter)
virtual void	doAction (SoAction *action)
virtual void	GLRender (SoGLRenderAction *action)
virtual void	callback (SoCallbackAction *action)
virtual void	getBoundingBox (SoGetBoundingBoxAction *action)
virtual void	getMatrix (SoGetMatrixAction *action)
virtual void	pick (SoPickAction *action)
virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)
Static Public Methods
void	initClass (void)
Public Attributes
SoSFVec3f	translation
SoSFRotation	rotation
SoSFVec3f	scaleFactor
SoSFRotation	scaleOrientation
SoSFVec3f	center
Protected Methods
virtual	~SoTransform ()

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Detailed Description

The SoTransform class is the "all-purpose" transformation node type.

Like SoMatrixTransform, nodes of this type gives the application programmer maximum flexibility when specifying geometry transformations in a scene graph. If you want to set and keep the various components of the transformation matrix in separate entities, this node type is preferable, though.

The order of operations is: first scaling is done, then rotation, then translation.

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Constructor & Destructor Documentation

SoTransform::SoTransform (  void )

Constructor.

SoTransform::~SoTransform (  )  [protected, virtual]

Destructor.

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Member Function Documentation

void SoTransform::initClass (  void )  [static]

Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. Reimplemented from SoTransformation. Reimplemented in SoCenterballManip, SoHandleBoxManip, SoJackManip, SoTabBoxManip, SoTrackballManip, SoTransformBoxManip, SoTransformManip, and SoTransformerManip.

void SoTransform::pointAt (  const SbVec3f & frompoint, const SbVec3f & topoint )

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 SoTransform::getScaleSpaceMatrix (  SbMatrix & mat, SbMatrix & inv )  const

Calculates the matrices to/from scale space.

void SoTransform::getRotationSpaceMatrix (  SbMatrix & mat, SbMatrix & inv )  const

Calculates the matrices to/from rotation space.

void SoTransform::getTranslationSpaceMatrix (  SbMatrix & mat, SbMatrix & inv )  const

Calculates the matrices to/from translation space.

void SoTransform::multLeft (  const SbMatrix & mat )

Premultiplies this transformation by mat.

void SoTransform::multRight (  const SbMatrix & mat )

Postmultiplies this transformation by mat.

void SoTransform::combineLeft (  SoTransformation * nodeonright )

Premultiplies this transformation by the transformation in nodeonright.

void SoTransform::combineRight (  SoTransformation * nodeonleft )

Postmultiplies this transformation by the transformation in nodeonleft.

void SoTransform::setMatrix (  const SbMatrix & mat )

Sets the fields to create a transformation equal to mat.

void SoTransform::recenter (  const SbVec3f & newcenter )

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

void SoTransform::doAction (  SoAction * action )  [virtual]

This function performs the typical operation of a node for any action. Reimplemented from SoNode. Reimplemented in SoTransformManip.

void SoTransform::GLRender (  SoGLRenderAction * action )  [virtual]

Action method for the SoGLRenderAction. This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method. Reimplemented from SoNode. Reimplemented in SoTransformManip.

void SoTransform::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 SoNode. Reimplemented in SoTransformManip.

void SoTransform::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 SoNode. Reimplemented in SoTransformManip.

void SoTransform::getMatrix (  SoGetMatrixAction * action )  [virtual]

Action method for SoGetMatrixAction. Updates action by accumulating with the transformation matrix of this node (if any). Reimplemented from SoNode. Reimplemented in SoTransformManip.

void SoTransform::pick (  SoPickAction * action )  [virtual]

Action method for SoPickAction. Does common processing for SoPickAction action instances. Reimplemented from SoNode. Reimplemented in SoTransformManip.

void SoTransform::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 SoNode.

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Member Data Documentation

SoSFVec3f SoTransform::translation

The translation part of the transformation.

SoSFRotation SoTransform::rotation

The rotation part of the transformation.

SoSFVec3f SoTransform::scaleFactor

The scaling part of the transformation.

SoSFRotation SoTransform::scaleOrientation

The orientation the object is set to before scaling.

SoSFVec3f SoTransform::center

The center point for the rotation.

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

• SoTransform.cpp
• SoTransform.h

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