---
name: "SoBlinker"
section: "3iv"
platform: "linux"
package: "inventor-doc"
version: "2.1.6+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SoBlinker/3iv"
---

# SoBlinker(3iv)

animated cycling switch node

## NAME

SoBlinker — animated cycling switch node

## INHERITS FROM

SoBase \> SoFieldContainer \> SoNode \> SoGroup \> SoSwitch \> SoBlinker

## SYNOPSIS

**#include \<Inventor/nodes/SoBlinker.h\>**

Fields from class SoBlinker:

**SoSFFloat**	**speed**\
 **SoSFBool**	**on**

Fields from class SoSwitch:

**SoSFInt32**	**whichChild**

Methods from class SoBlinker:

	**SoBlinker()**\
 **static SoType**	**getClassTypeId()**

Methods from class SoGroup:

**void**	**addChild(SoNode \*child)**\
 **void**	**insertChild(SoNode \*child, int newChildIndex)**\
 **SoNode \***	**getChild(int index) const**\
 **int**	**findChild(const SoNode \*child) const**\
 **int**	**getNumChildren() const**\
 **void**	**removeChild(int index)**\
 **void**	**removeChild(SoNode \*child)**\
 **void**	**removeAllChildren()**\
 **void**	**replaceChild(int index, SoNode \*newChild)**\
 **void**	**replaceChild(SoNode \*oldChild, SoNode \*newChild)**

Methods from class SoNode:

**void**	**setOverride(SbBool state)**\
 **SbBool**	**isOverride() const**\
 **SoNode \***	**copy(SbBool copyConnections = FALSE) const**\
 **virtual SbBool**	**affectsState() const**\
 **static SoNode \***	**getByName(const SbName &name)**\
 **static int**	**getByName(const SbName &name, SoNodeList &list)**

Methods from class SoFieldContainer:

**void**	**setToDefaults()**\
 **SbBool**	**hasDefaultValues() const**\
 **SbBool**	**fieldsAreEqual(const SoFieldContainer \*fc) const**\
 **void**	**copyFieldValues(const SoFieldContainer \*fc, SbBool copyConnections = FALSE)**\
 **SbBool**	**set(const char \*fieldDataString)**\
 **void**	**get(SbString &fieldDataString)**\
 **virtual int**	**getFields(SoFieldList &resultList) const**\
 **virtual SoField \***	**getField(const SbName &fieldName) const**\
 **SbBool**	**getFieldName(const SoField \*field, SbName &fieldName) const**\
 **SbBool**	**isNotifyEnabled() const**\
 **SbBool**	**enableNotify(SbBool flag)**

Methods from class SoBase:

**void**	**ref()**\
 **void**	**unref() const**\
 **void**	**unrefNoDelete() const**\
 **void**	**touch()**\
 **virtual SoType**	**getTypeId() const**\
 **SbBool**	**isOfType(SoType type) const**\
 **virtual void**	**setName(const SbName &name)**\
 **virtual SbName**	**getName() const**

## DESCRIPTION

**The SoBlinker** class is derived from **SoSwitch**, so it selects one of its children to traverse. Using engines connected to the **realTime** global field, the **whichChild** field is animated over time. If the node has only one child, **whichChild** toggles between **SO\_SWITCH\_NONE** and 0, causing the child to be switched on and off repeatedly. If the node has more than one child, they are cycled through continuously.

## FIELDS

**SoSFFloat**	**speed**\
 Defines the speed of the blinker, in cycles per second.

**SoSFBool**	**on**\
 Allows applications to enable or disable the blinking easily.

## METHODS

	**SoBlinker()**\
 Creates a blinker node with default settings.

**static SoType**	**getClassTypeId()**\
 Returns type identifier for this class.

## ACTION BEHAVIOR

**SoGLRenderAction, SoCallbackAction, SoGetBoundingBoxAction, SoGetMatrixAction, SoHandleEventAction, SoRayPickAction, SoSearchAction**\
 Same as for **SoSwitch**.

## FILE FORMAT/DEFAULTS

```
Blinker {
whichChild	-1
speed	1
on	TRUE
}
```