SoOnOff(3) The SoOnOff engine is a simple on/off switch.

SYNOPSIS


#include <Inventor/engines/SoOnOff.h>

Inherits SoEngine.

Public Member Functions


virtual SoType getTypeId (void) const

virtual const SoFieldData * getFieldData (void) const

virtual const SoEngineOutputData * getOutputData (void) const

SoOnOff (void)

Static Public Member Functions


static SoType getClassTypeId (void)

static void * createInstance (void)

static void initClass (void)

Public Attributes


SoSFTrigger on

SoSFTrigger off

SoSFTrigger toggle

SoEngineOutput isOn

SoEngineOutput isOff

Protected Member Functions


virtual ~SoOnOff (void)

Static Protected Member Functions


static const SoFieldData ** getInputDataPtr (void)

static const SoEngineOutputData ** getOutputDataPtr (void)

Detailed Description

The SoOnOff engine is a simple on/off switch.

Constructor & Destructor Documentation

SoOnOff::SoOnOff (void)

Default constructor.

SoOnOff::~SoOnOff (void) [protected], [virtual]

Destructor is protected because engines are reference counted.

Member Function Documentation

SoType SoOnOff::getClassTypeId (void) [static]

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

Reimplemented from SoEngine.

SoType SoOnOff::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
    }
  }

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.

Implements SoBase.

const SoFieldData ** SoOnOff::getInputDataPtr (void) [static], [protected]

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

Reimplemented from SoEngine.

const SoEngineOutputData ** SoOnOff::getOutputDataPtr (void) [static], [protected]

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

Reimplemented from SoEngine.

const SoFieldData * SoOnOff::getFieldData (void) const [virtual]

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

Reimplemented from SoFieldContainer.

const SoEngineOutputData * SoOnOff::getOutputData (void) const [virtual]

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

Implements SoEngine.

void SoOnOff::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 SoEngine.

Member Data Documentation

SoSFTrigger SoOnOff::on

An input signal on this trigger makes the SoOnOff::isOn output become TRUE.

SoSFTrigger SoOnOff::off

An input signal on this trigger makes the SoOnOff::isOn output become FALSE.

SoSFTrigger SoOnOff::toggle

An input signal on this trigger toggles the TRUE or FALSE value of the SoOnOff::isOn output.

SoEngineOutput SoOnOff::isOn

(SoSFBool) Whether the engine is 'on' or not.

SoEngineOutput SoOnOff::isOff

(SoSFBool) Always the opposite value of SoOnOff::isOn.

Author

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