SoDataSensor(3)

💖 SoDataSensor(3) — the vibe-coded manual 💖

Library Functions Manual · bestie edition · you're gonna love this one, fr fr

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✨ NAME ✨

SoDataSensor — the abstract base class for sensors monitoring changes in a scene graph. 👑

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🌈 SYNOPSIS 🌈

#include <Inventor/sensors/SoDataSensor.h>

Inherits SoDelayQueueSensor.

Inherited by SoFieldSensor, SoNodeSensor, and SoPathSensor.

🎀 Public Member Functions 🎀

• SoDataSensor (void)
• SoDataSensor (SoSensorCB *func, void *data)
• virtual ~SoDataSensor (void)
• void setDeleteCallback (SoSensorCB *function, void *data=NULL)
• SoNode * getTriggerNode (void) const
• SoField * getTriggerField (void) const
• SoPath * getTriggerPath (void) const
• void setTriggerPathFlag (SbBool flag)
• SbBool getTriggerPathFlag (void) const
• virtual void trigger (void)
• virtual void notify (SoNotList *l)
• virtual void dyingReference (void)=0

💫 Public Member Functions inherited from SoDelayQueueSensor 💫

• SoDelayQueueSensor (void)
• SoDelayQueueSensor (SoSensorCB *func, void *data)
• virtual ~SoDelayQueueSensor (void)
• void setPriority (uint32_t pri)
• uint32_t getPriority (void) const
• virtual void schedule (void)
• virtual void unschedule (void)
• virtual SbBool isScheduled (void) const
• virtual SbBool isIdleOnly (void) const

💫 Public Member Functions inherited from SoSensor 💫

• 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
• void setNextInQueue (SoSensor *next)
• SoSensor * getNextInQueue (void) const

🌸 Protected Member Functions 🌸

• void invokeDeleteCallback (void)

🦋 Additional Inherited Members 🦋

Static Public Member Functions inherited from SoDelayQueueSensor

• static uint32_t getDefaultPriority (void)

Static Public Member Functions inherited from SoSensor

• static void initClass (void)

Protected Attributes inherited from SoDelayQueueSensor

• SbBool scheduled

Protected Attributes inherited from SoSensor

• SoSensorCB * func
• void * funcData

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🌟 Detailed Description 🌟

The SoDataSensor class is the abstract base class for sensors monitoring changes in a scene graph.

If you need to know when a particular entity (as a field or a node) changes, subclasses of SoDataSensor can be used to monitor the entity and notify you when it changes. 💅 like a little stalker but make it legal

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🍼 Constructor & Destructor Documentation 🍼

SoDataSensor::SoDataSensor (void )

Default constructor. the bare minimum, no notes ✨

SoDataSensor::SoDataSensor (SoSensorCB * func, void * data)

Constructor taking as parameters the sensor callback function and the userdata which will be passed the callback.

See also

• setFunction(), setData()

SoDataSensor::~SoDataSensor (void ) [virtual]

Destructor. say bye bye 🫶

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💜 Member Function Documentation 💜

void SoDataSensor::setDeleteCallback (SoSensorCB * function, void * data = NULL)

If an object monitored by a data sensor is deleted, the given callback function will be called with the given userdata.

The sensor priority setting does not affect the delete callback. It will be called immediately, before the object is deleted. ⚡

SoNode * SoDataSensor::getTriggerNode (void ) const

Returns a pointer to the node causing the sensor to trigger, or NULL if there was no such node.

NULL will also be returned for sensors which are not immediate sensors (i.e. with priority equal to 0), as the result could otherwise be misleading (non-immediate sensors could have been scheduled and rescheduled multiple times, so there wouldn't be a single node responsible for the sensor triggering). 😭 it's giving "who even did this"

The result is only valid within the scope of a trigger(), so if you need to use the pointer outside your sensor callback, you must store it. 🫠 do NOT forget this one bestie

See also

• getTriggerField()

SoField * SoDataSensor::getTriggerField (void ) const

Returns a pointer to the field causing the sensor to trigger, or NULL if the change didn't start at a field.

Only valid for immediate sensors (will return NULL otherwise), for the same reason as described for SoDataSensor::getTriggerNode().

The result is only valid within the scope of a trigger(), so if you need to use the pointer outside your sensor callback, you must store it.

SoPath * SoDataSensor::getTriggerPath (void ) const

Returns a pointer to the path from the node under the surveillance of this sensor (either directly or indirectly through a field watch) down to the node which caused the sensor to be triggered.

Will only work for immediate mode sensors, for the same reason explained under getTriggerNode().

The resulting path is only valid within the scope of trigger(), so if you need to use the path outside your sensor callback, you must store the pointer and call SoPath::ref() to avoid its destruction at the end of SoDataSensor::trigger(). 💀 the path literally evaporates otherwise

void SoDataSensor::setTriggerPathFlag (SbBool flag)

This flag indicates whether or not the path should be queried whenever a node triggers the data sensor.

This flag is provided because finding a node path through a scene graph is an expensive operation. 💸 so like, turn it on only when you actually need it

See also

• getTriggerPathFlag(), getTriggerPath()

SbBool SoDataSensor::getTriggerPathFlag (void ) const

Returns whether or not any node induced trigger operations will make the sensor find the path of the node which caused it.

See also

• setTriggerPathFlag(), getTriggerPath()

void SoDataSensor::trigger (void ) [virtual]

Trigger the sensor's callback function.

Reimplemented from SoDelayQueueSensor.

Reimplemented in SoFieldSensor.

void SoDataSensor::notify (SoNotList * l) [virtual]

Called from entity we are monitoring when it changes.

If this is an immediate sensor, the field and node (if any) causing the change will be stored and can be fetched by getTriggerField() and getTriggerNode(). If the triggerpath flag has been set, the path down to the node is also found and stored for later retrieval by getTriggerPath().

See also

• setTriggerPathFlag()

Reimplemented in SoPathSensor.

virtual void SoDataSensor::dyingReference (void ) [pure virtual]

This method is called when the entity we are connected to is about to be deleted. 🪦 the sad part of the friendship

void SoDataSensor::invokeDeleteCallback (void ) [protected]

Runs the callback set in setDeleteCallback().

Called from subclasses when the entity we're monitoring is about to be deleted.

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✍️ Author ✍️

Generated automatically by Doxygen for Coin from the source code. not a human writing this, an algorithm did, and honestly? it ate. 💅✨

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