SoNodeEngine Class Referenceabstract
Engine Classes

SoNodeEngine is the base class for Coin node engines. More...

`#include <Inventor/engines/SoNodeEngine.h>`

Inheritance diagram for SoNodeEngine:

## Public Member Functions

void | evaluateWrapper (void)
virtual int | getOutputs (SoEngineOutputList &l) const
SoEngineOutput * | getOutput (const SbName &outputname) const
SbBool | getOutputName (const SoEngineOutput *output, SbName &outputname) const
virtual const SoEngineOutputData * | getOutputData (void) const =0
SbBool | isNotifying (void) const
virtual void | notify (SoNotList *nl)
virtual void | writeInstance (SoOutput *out)
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 SbBool | affectsState (void) const
virtual void | doAction (SoAction *action)
virtual void | GLRender (SoGLRenderAction *action)
virtual void | GLRenderBelowPath (SoGLRenderAction *action)
virtual void | GLRenderInPath (SoGLRenderAction *action)
virtual void | GLRenderOffPath (SoGLRenderAction *action)
virtual void | callback (SoCallbackAction *action)
virtual void | getBoundingBox (SoGetBoundingBoxAction *action)
virtual void | getMatrix (SoGetMatrixAction *action)
virtual void | handleEvent (SoHandleEventAction *action)
virtual void | pick (SoPickAction *action)
virtual void | rayPick (SoRayPickAction *action)
virtual void | search (SoSearchAction *action)
virtual void | write (SoWriteAction *action)
virtual void | audioRender (SoAudioRenderAction *action)
virtual void | getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void | grabEventsSetup (void)
virtual void | grabEventsCleanup (void)
virtual void | startNotify (void)
SbUniqueId | getNodeId (void) const
virtual SoChildList * | getChildren (void) const
virtual SoNode * | addToCopyDict (void) const
virtual void | copyContents (const SoFieldContainer *from, SbBool copyconnections)
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 const SoFieldData * | getFieldData (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)
virtual SoType | getTypeId (void) const =0
| Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and "downward" casting.
SbBool | isOfType (SoType type) const
| Returns `TRUE` if the type of this object is either of the same type or inherited from type.
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 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)
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)
| Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static void | initClasses (void)
static SbUniqueId | 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)
| 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 | 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)

## Protected Member Functions

| SoNodeEngine (void)
virtual | ~SoNodeEngine (void)
virtual void | evaluate (void)=0
virtual SbBool | readInstance (SoInput *in, unsigned short flags)
virtual void | inputChanged (SoField *which)
void | writeOutputTypes (SoOutput *out)
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 ()
SbBool | hasMultipleWriteRefs (void) const
SbBool | writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const
void | writeFooter (SoOutput *out) const
virtual const char * | getFileFormatName (void) const
virtual SoNotRec | createNotRec (void)

## Static Protected Member Functions

static const SoFieldData ** | getFieldDataPtr (void)
static const SoEngineOutputData ** | getOutputDataPtr (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 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 SoNode
SbUniqueId | uniqueId
Protected Attributes inherited from SoFieldContainer
SbBool | isBuiltIn
Static Protected Attributes inherited from SoNode
static SbUniqueId | nextUniqueId = 1
static int | nextActionMethodIndex = 0

## Detailed Description

SoNodeEngine is the base class for Coin node engines.

Node engines have the same functionality as normal engines, except that they inherit SoNode, which makes it possible to insert node engines in the scene graph.

The main rationale for this class is to simplify the implementation of VRML interpolator nodes, which are in a sense engines embedded in the shape of ordinary nodes.

This abstract superclass will likely be of no interest to the Coin application programmer, and you can safely ignore it.

Be aware that this class is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.

## Constructor & Destructor Documentation

## SoNodeEngine()

SoNodeEngine::SoNodeEngine | ( | void |  | ) |

protected

Default constructor.

## ~SoNodeEngine()

SoNodeEngine::~SoNodeEngine | ( | void |  | ) |

protected virtual

Destructor.

## Member Function Documentation

## getClassTypeId()

SoType SoNodeEngine::getClassTypeId | ( | void |  | ) |

static

## evaluateWrapper()

void SoNodeEngine::evaluateWrapper | ( | void |  | ) |

Triggers an engine evaluation.

## getOutputs()

int SoNodeEngine::getOutputs | ( | SoEngineOutputList & | l | ) | const

virtual

Adds all outputs to list. Returns the number of outputs added to the list.

## getOutput()

SoEngineOutput * SoNodeEngine::getOutput | ( | const SbName & | outputname | ) | const

Returns the output with name outputname, or `NULL` if no such output exists.

## getOutputName()

SbBool SoNodeEngine::getOutputName | ( | const SoEngineOutput * | output,
|  | SbName & | outputname ) const

Sets outputname to the name of output. Returns `FALSE` if no such output is contained within the engine instance.

## getOutputData()

virtual const SoEngineOutputData * SoNodeEngine::getOutputData | ( | void |  | ) | const

pure virtual

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

Implemented in SoVRMLColorInterpolator, SoVRMLCoordinateInterpolator, SoVRMLInterpolator, SoVRMLNormalInterpolator, SoVRMLOrientationInterpolator, SoVRMLPositionInterpolator, SoVRMLScalarInterpolator, and SoVRMLTimeSensor.

## isNotifying()

SbBool SoNodeEngine::isNotifying | ( | void |  | ) | const

Returns whether we're in a notification process. This is needed to avoid double notification when an engine enables outputs during inputChanged().

## notify()

void SoNodeEngine::notify | ( | SoNotList * | l | ) |

virtual

Notifies all auditors for this instance when changes are made.

Reimplemented from SoNode.

Reimplemented in SoVRMLTimeSensor.

## writeInstance()

void SoNodeEngine::writeInstance | ( | SoOutput * | out | ) |

virtual

Writes all the fields contained in this instance to the output stream within out.

This method is solely called from the write methods of fields.

Either from SoField if the write is done because of a field-to-field connection, or from one of the fields which may actually write SoFieldContainer instances, i.e. SoSFNode, SoMFNode, SoSFEngine, SoMFEngine, SoSFPath and SoMFPath.

This method, in addition to the ordinary write() method of SoNode, needs to be present since the fields don't have a write action instance in their writeValue() method, and writeInstance() will create a new SoWriteAction and call continueToApply() on it.

Reimplemented from SoNode.

## evaluate()

virtual void SoNodeEngine::evaluate | ( | void |  | ) |

protected pure virtual

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

## readInstance()

SbBool SoNodeEngine::readInstance | ( | SoInput * | in,
|  | unsigned short | flags )

protected virtual

This method is mainly intended for internal use during file import operations.

It reads a definition of an instance from the input stream in. The input stream state points to the start of a serialized / persistent representation of an instance of this class type.

`TRUE` or `FALSE` is returned, depending on if the instantiation and configuration of the new object of this class type went OK or not. The import process should be robust and handle corrupted input streams by returning `FALSE`.

flags is used internally during binary import when reading user extension nodes, group nodes or engines.

Reimplemented from SoNode.

## inputChanged()

void SoNodeEngine::inputChanged | ( | SoField * | which | ) |

protected virtual

Called when an input is changed. The default method does nothing, but subclasses may override this method to do the The Right Thing when a specific field is changed.

Reimplemented in SoVRMLTimeSensor.

## getFieldDataPtr()

const SoFieldData ** SoNodeEngine::getFieldDataPtr | ( | void |  | ) |

static protected

Returns the SoFieldData class which holds information about inputs in this engine.

## getOutputDataPtr()

const SoEngineOutputData ** SoNodeEngine::getOutputDataPtr | ( | void |  | ) |

static protected

Returns the SoEngineOutputData class which holds information about the outputs in this engine.

## writeOutputTypes()

void SoNodeEngine::writeOutputTypes | ( | SoOutput * | out | ) |

protected

Writes the types of engine outputs for extension engines (i.e. engines not built in to Coin).

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

- SoNodeEngine.h
- SoNodeEngine.cpp