man SoAntiSquish (Fonctions bibliothèques) -

NAME

SoAntiSquish -

SYNOPSIS

#include <Inventor/nodes/SoAntiSquish.h>

Inherits SoTransformation.

Detailed Description

The SoAntiSquish class is used to reset to uniform scaling.

When traversed, this node replaces the scale vector of the matrix with uniform values, based on one of the SoAntiSquish::Sizing strategies.

This node is for instance used by manipulators to retain the shape of their dragger geometries when set up within the influence of an SoSurroundScale node (which can yield nonuniform scale-vectors in the current state transformation matrix).

FILE FORMAT/DEFAULTS:

    AntiSquish {
        recalcAlways TRUE
        sizing AVERAGE_DIMENSION
    }

See also: SoSurroundScale for a usage example.

Public Types

enum Sizing { X, Y, Z, AVERAGE_DIMENSION, BIGGEST_DIMENSION, SMALLEST_DIMENSION, LONGEST_DIAGONAL }

Public Member Functions

virtual SoType getTypeId (void) const

SoAntiSquish (void)

void recalc (void)

virtual void doAction (SoAction *action)

Static Public Member Functions

static SoType getClassTypeId (void)

static void initClass (void)

Public Attributes

SoSFEnum sizing

SoSFBool recalcAlways

Protected Member Functions

virtual const SoFieldData * getFieldData (void) const

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)

Static Protected Member Functions

static const SoFieldData ** getFieldDataPtr (void)

Member Enumeration Documentation

enum SoAntiSquish::Sizing

Different strategies for 'unsquishing' a scale. Values are used by the SoAntiSquish::sizing field.

Constructor & Destructor Documentation

SoAntiSquish::SoAntiSquish (void)

Constructor.

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

Destructor.

Member Function Documentation

SoType SoAntiSquish::getClassTypeId (void) [static]

This static method returns the SoType object associated with objects of this class.

Reimplemented from SoTransformation.

SoType SoAntiSquish::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
    }
    else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {
      SoGroup * group = (SoGroup *)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 SoTransformation.

const SoFieldData ** SoAntiSquish::getFieldDataPtr (void) [static, protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Reimplemented from SoTransformation.

const SoFieldData * SoAntiSquish::getFieldData (void) const [protected, virtual]

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

Reimplemented from SoTransformation.

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