---

SoAntiSquish Class Reference

The SoAntiSquish class is used to make scaling uniform. More...

#include <Inventor/nodes/SoAntiSquish.h>

Inheritance diagram for SoAntiSquish::

List of all members.

Public Types
enum	Sizing {   X, Y, Z, AVERAGE_DIMENSION,   BIGGEST_DIMENSION, SMALLEST_DIMENSION, LONGEST_DIAGONAL }
Public Methods
	SoAntiSquish (void)
void	recalc (void)
virtual void	doAction (SoAction *action)
Static Public Methods
void	initClass (void)
Public Attributes
SoSFEnum	sizing
SoSFBool	recalcAlways
Protected Methods
virtual	~SoAntiSquish ()
virtual void	callback (SoCallbackAction *action)
virtual void	GLRender (SoGLRenderAction *action)
virtual void	getBoundingBox (SoGetBoundingBoxAction *action)
virtual void	getMatrix (SoGetMatrixAction *action)
virtual void	pick (SoPickAction *action)
SbMatrix	getUnsquishingMatrix (const SbMatrix &squishedmatrix, const SbBool calcinverse, SbMatrix &getinverse)

---

Detailed Description

The SoAntiSquish class is used to make scaling uniform.

This is used by draggers and manipulators to retain the shape of their geometry, even if the current transformation matrix contains a nonuniform scale. When traversed, this node replaces the scale vector of the matrix with uniform values, bases on one of the Sizing strategies.

---

Member Enumeration Documentation

enum SoAntiSquish::Sizing

Different strategies for "unsquishing" a scale.

---

Constructor & Destructor Documentation

SoAntiSquish::SoAntiSquish (  void )

Constructor.

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

Destructor.

---

Member Function Documentation

void SoAntiSquish::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.

void SoAntiSquish::recalc (  void )

If SoAntiSquish::recalcAlways has been set to FALSE, you must call this method whenever the transformations before this node in the graph has changed. See also: SoAntiSquish::recalcAlways

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

Accumulates an "unsquishing" matrix on top of the current model matrix. Reimplemented from SoNode.

void SoAntiSquish::callback (  SoCallbackAction * action )  [protected, 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.

void SoAntiSquish::GLRender (  SoGLRenderAction * action )  [protected, 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.

void SoAntiSquish::getBoundingBox (  SoGetBoundingBoxAction * action )  [protected, 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.

void SoAntiSquish::getMatrix (  SoGetMatrixAction * action )  [protected, virtual]

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

void SoAntiSquish::pick (  SoPickAction * action )  [protected, virtual]

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

SbMatrix SoAntiSquish::getUnsquishingMatrix (  const SbMatrix & squishedmatrix, const SbBool calcinverse, SbMatrix & getinverse )  [protected]

Calculate and return the matrix needed to "unsquish" the squishedmatrix. If calcinverse is TRUE, store the inverse of the unsquishmatrix in getinverse.

---

Member Data Documentation

SoSFEnum SoAntiSquish::sizing

The current "unsquish" strategy. Default value is SoAntiSquish::AVERAGE_DIMENSION.

SoSFBool SoAntiSquish::recalcAlways

Whether to recalculate the unsquishing parameters for every traversal. Set this to FALSE and use SoAntiSquish::recalc() if you need to optimize.

---

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

• SoAntiSquish.cpp
• SoAntiSquish.h

---