Coin Logo Coin3D is Free Software,
published under the BSD 3-clause license.
SoSensor Class Referenceabstract

The SoSensor class is the abstract base class for all sensors. More...

#include <Inventor/sensors/SoSensor.h>

Inheritance diagram for SoSensor:
SoDelayQueueSensor SoTimerQueueSensor SoDataSensor SoIdleSensor SoOneShotSensor SoAlarmSensor SoTimerSensor SoFieldSensor SoNodeSensor SoPathSensor

Public Member Functions

 SoSensor (void)
 SoSensor (SoSensorCB *func, void *data)
virtual ~SoSensor (void)
void setFunction (SoSensorCB *callbackfunction)
SoSensorCBPtr getFunction (void) const
void setData (void *callbackdata)
void * getData (void) const
virtual void schedule (void)=0
virtual void unschedule (void)=0
virtual SbBool isScheduled (void) const =0
virtual void trigger (void)
virtual SbBool isBefore (const SoSensor *s) const =0
void setNextInQueue (SoSensor *next)
SoSensorgetNextInQueue (void) const

Static Public Member Functions

static void initClass (void)

Protected Attributes

void * funcData

Detailed Description

The SoSensor class is the abstract base class for all sensors.

Sensors is a mechanism in Coin for scheduling jobs to be run upon specific events. The events in question could be particular points in time, or changes to entities in the scene graph.

See documentation of subclasses for insight into exactly for what types of events we can trigger sensor callbacks.

For most tasks where application programmers can use sensors, it is also possible to achieve the same results by using engines. There are a few important differences between sensors and engines, though:

Engines are considered part of the scene graph, and are written to file upon SoWriteAction export operations. Sensors, on the other hand, are not included in export operations.

Engines basically connects fields (and come with a lot of built-in functionality for combining and converting inputs and outputs), you just decide which engine you want, connect inputs and output and forget about it. Sensors are a lot more flexible in what you can do when they trigger, as control is transfered internally from Coin to your registered callback functions.

See also
SoSensorManager, SoEngine

Constructor & Destructor Documentation

◆ SoSensor() [1/2]

SoSensor::SoSensor ( void  )


◆ SoSensor() [2/2]

SoSensor::SoSensor ( SoSensorCB funcptr,
void *  data 

Constructor taking as parameters the sensor callback function func and the user data pointer which will be passed to the callback.

See also
setFunction(), setData()

◆ ~SoSensor()

SoSensor::~SoSensor ( void  )


Member Function Documentation

◆ setFunction()

void SoSensor::setFunction ( SoSensorCB callbackfunction)

Set the callback function pointer which will be used when the sensor is triggered.

See also
getFunction(), setData()

◆ getFunction()

SoSensorCB * SoSensor::getFunction ( void  ) const

Returns the callback function pointer.

See also

◆ setData()

void SoSensor::setData ( void *  callbackdata)

Set the user supplied data pointer which will be used as the first argument to the sensor callback function.

See also
getData(), setFunction()

◆ getData()

void * SoSensor::getData ( void  ) const

Returns the user supplied callback function data pointer.

See also

◆ schedule()

void SoSensor::schedule ( void  )
pure virtual

Put the sensor in a queue to be triggered at a later time.

See also
unschedule(), isScheduled()

Implemented in SoDelayQueueSensor, SoTimerSensor, SoAlarmSensor, and SoTimerQueueSensor.

◆ unschedule()

void SoSensor::unschedule ( void  )
pure virtual

Remove sensor from queue. The sensor will not be triggered unless it is later rescheduled.

See also
schedule(), isScheduled()

Implemented in SoDelayQueueSensor, SoTimerSensor, and SoTimerQueueSensor.

◆ isScheduled()

SbBool SoSensor::isScheduled ( void  ) const
pure virtual

Check if this sensor is scheduled for triggering.

See also
schedule(), unschedule()

Implemented in SoDelayQueueSensor, and SoTimerQueueSensor.

◆ trigger()

void SoSensor::trigger ( void  )

Trigger the sensor's callback function.

Reimplemented in SoDataSensor, SoDelayQueueSensor, SoTimerQueueSensor, and SoFieldSensor.

◆ isBefore()

SbBool SoSensor::isBefore ( const SoSensor s) const
pure virtual

Returns TRUE if this sensor should precede sensor s in its sensor queue.

◆ setNextInQueue()

void SoSensor::setNextInQueue ( SoSensor next)

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

Open Inventor function not implemented in Coin.

◆ getNextInQueue()

SoSensor * SoSensor::getNextInQueue ( void  ) const

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

Open Inventor function not implemented in Coin.

◆ initClass()

void SoSensor::initClass ( void  )

Sets up initialization for static data for the sensors. Called by SoDB::init().

Member Data Documentation

◆ func

SoSensorCB * SoSensor::func

Function to be called when a sensor triggers.

◆ funcData

void * SoSensor::funcData

Data passed to the callback function.

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