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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::

SoTransformation SoNode SoFieldContainer SoBase SoTransformManip SoCenterballManip SoHandleBoxManip SoJackManip SoTabBoxManip SoTrackballManip SoTransformBoxManip SoTransformerManip 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 ()

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.


Constructor & Destructor Documentation

SoTransform::SoTransform void   
 

Constructor.

SoTransform::~SoTransform   [protected, virtual]
 

Destructor.


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.


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.


The documentation for this class was generated from the following files:
Generated on Sat Jan 12 11:41:20 2002 for Coin by doxygen1.2.12 written by Dimitri van Heesch, © 1997-2001