---
name: "SoRotateDiscDragger"
section: "3"
platform: "linux"
package: "coin"
version: "1:4.0.10-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/SoRotateDiscDragger"
---

# SoRotateDiscDragger(3)

The SoRotateDiscDragger class is for rotating geometry around a single axis.

## NAME

SoRotateDiscDragger - The **SoRotateDiscDragger** class is for rotating geometry around a single axis.

## SYNOPSIS

\#include \<Inventor/draggers/SoRotateDiscDragger.h\>

Inherits **SoDragger**.

### Public Member Functions

virtual **SoType** **getTypeId** (void) const\
 virtual const **SoNodekitCatalog** \* **getNodekitCatalog** (void) const\
 **SoRotateDiscDragger** (void)\

Public Member Functions inherited from **SoDragger** virtual void **callback** (**SoCallbackAction** \*action)\
 virtual void **GLRender** (**SoGLRenderAction** \*action)\
 virtual void **getMatrix** (**SoGetMatrixAction** \*action)\
 virtual void **rayPick** (**SoRayPickAction** \*action)\
 virtual void **search** (**SoSearchAction** \*action)\
 virtual void **write** (**SoWriteAction** \*action)\
 virtual void **getPrimitiveCount** (**SoGetPrimitiveCountAction** \*action)\
 void **setProjectorEpsilon** (const float epsilon)\
 float **getProjectorEpsilon** (void) const\
 void **addStartCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **removeStartCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **addMotionCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **removeMotionCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **addFinishCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **removeFinishCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **addValueChangedCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **removeValueChangedCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **setMinGesture** (int pixels)\
 int **getMinGesture** (void) const\
 SbBool **enableValueChangedCallbacks** (SbBool newval)\
 const **SbMatrix** & **getMotionMatrix** (void)\
 void **addOtherEventCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **removeOtherEventCallback** (SoDraggerCB \*func, void \*data=NULL)\
 void **registerChildDragger** (**SoDragger** \*child)\
 void **unregisterChildDragger** (**SoDragger** \*child)\
 void **registerChildDraggerMovingIndependently** (**SoDragger** \*child)\
 void **unregisterChildDraggerMovingIndependently** (**SoDragger** \*child)\
 **SbMatrix** **getLocalToWorldMatrix** (void)\
 **SbMatrix** **getWorldToLocalMatrix** (void)\
 **SbVec3f** **getLocalStartingPoint** (void)\
 **SbVec3f** **getWorldStartingPoint** (void)\
 void **getPartToLocalMatrix** (const **SbName** &partname, **SbMatrix** &parttolocalmatrix, **SbMatrix** &localtopartmatrix)\
 void **transformMatrixLocalToWorld** (const **SbMatrix** &frommatrix, **SbMatrix** &tomatrix)\
 void **transformMatrixWorldToLocal** (const **SbMatrix** &frommatrix, **SbMatrix** &tomatrix)\
 void **transformMatrixToLocalSpace** (const **SbMatrix** &frommatrix, **SbMatrix** &tomatrix, const **SbName** &fromspacepartname)\
 virtual void **setMotionMatrix** (const **SbMatrix** &newmatrix)\
 void **valueChanged** (void)\
 const **SbMatrix** & **getStartMotionMatrix** (void)\
 virtual void **saveStartParameters** (void)\
 const **SoPath** \* **getPickPath** (void) const\
 const **SoEvent** \* **getEvent** (void) const\
 **SoPath** \* **createPathToThis** (void)\
 const **SoPath** \* **getSurrogatePartPickedOwner** (void) const\
 const **SbName** & **getSurrogatePartPickedName** (void) const\
 const **SoPath** \* **getSurrogatePartPickedPath** (void) const\
 void **setStartingPoint** (const **SoPickedPoint** \*newpoint)\
 void **setStartingPoint** (const **SbVec3f** &newpoint)\
 const **SbViewVolume** & **getViewVolume** (void)\
 void **setViewVolume** (const **SbViewVolume** &vol)\
 const **SbViewportRegion** & **getViewportRegion** (void)\
 void **setViewportRegion** (const **SbViewportRegion** &reg)\
 **SoHandleEventAction** \* **getHandleEventAction** (void) const\
 void **setHandleEventAction** (**SoHandleEventAction** \*newAction)\
 void **setTempPathToThis** (const **SoPath** \*somethingclose)\
 virtual void **grabEventsSetup** (void)\
 virtual void **grabEventsCleanup** (void)\
 void **workFieldsIntoTransform** (**SbMatrix** &mtx)\
 void **setFrontOnProjector** (**ProjectorFrontSetting** newval)\
 **ProjectorFrontSetting** **getFrontOnProjector** (void) const\

Public Member Functions inherited from **SoInteractionKit** **SoInteractionKit** (void)\
 virtual SbBool **setPartAsPath** (const **SbName** &partname, **SoPath** \*path)\
 virtual SbBool **setPartAsDefault** (const **SbName** &partname, **SoNode** \*node, SbBool onlyifdefault=TRUE)\
 virtual SbBool **setPartAsDefault** (const **SbName** &partname, const **SbName** &nodename, SbBool onlyifdefault=TRUE)\
 SbBool **isPathSurrogateInMySubgraph** (const **SoPath** \*path, **SoPath** \*&pathToOwner, **SbName** &surrogatename, **SoPath** \*&surrogatepath, SbBool fillargs=TRUE)\
 SbBool **isPathSurrogateInMySubgraph** (const **SoPath** \*path)\
 virtual SbBool **setPart** (const **SbName** &partname, **SoNode** \*from)\

Public Member Functions inherited from **SoBaseKit** **SoBaseKit** (void)\
 virtual **SoNode** \* **getPart** (const **SbName** &partname, SbBool makeifneeded)\
 **SbString** **getPartString** (const **SoBase** \*part)\
 virtual **SoNodeKitPath** \* **createPathToPart** (const **SbName** &partname, SbBool makeifneeded, const **SoPath** \*pathtoextend=NULL)\
 SbBool **set** (const char \*namevaluepairliststring)\
 SbBool **set** (const char \*partnamestring, const char \*parameterstring)\
 virtual void **doAction** (**SoAction** \*action)\
 virtual **SoChildList** \* **getChildren** (void) const\
 void **printDiagram** (void)\
 void **printSubDiagram** (const **SbName** &rootname, int level)\
 void **printTable** (void)\
 virtual void **addWriteReference** (**SoOutput** \*out, SbBool isfromfield=FALSE)\
 SbBool **forceChildDrivenWriteRefs** (**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 **GLRenderBelowPath** (**SoGLRenderAction** \*action)\
 virtual void **GLRenderInPath** (**SoGLRenderAction** \*action)\
 virtual void **GLRenderOffPath** (**SoGLRenderAction** \*action)\
 virtual void **pick** (**SoPickAction** \*action)\
 virtual void **audioRender** (**SoAudioRenderAction** \*action)\
 virtual void **startNotify** (void)\
 virtual void **notify** (**SoNotList** \*l)\
 SbUniqueId **getNodeId** (void) const\
 virtual void **writeInstance** (**SoOutput** \*out)\
 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)\
 SbBool **getIsBuiltIn** (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)\
 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 **SoType** **getClassTypeId** (void)\
 static const **SoNodekitCatalog** \* **getClassNodekitCatalog** (void)\
 static void **initClass** (void)\

Static Public Member Functions inherited from **SoDragger** static **SoType** **getClassTypeId** (void)\
 static const **SoNodekitCatalog** \* **getClassNodekitCatalog** (void)\
 static void **setMinScale** (float newminscale)\
 static float **getMinScale** (void)\
 static void **workValuesIntoTransform** (**SbMatrix** &mtx, const **SbVec3f** \*translationptr, const **SbRotation** \*rotationptr, const **SbVec3f** \*scalefactorptr, const **SbRotation** \*scaleorientationptr, const **SbVec3f** \*centerptr)\
 static void **getTransformFast** (**SbMatrix** &mtx, **SbVec3f** &translation, **SbRotation** &rotation, **SbVec3f** &scalefactor, **SbRotation** &scaleorientation, const **SbVec3f** &center)\
 static void **getTransformFast** (**SbMatrix** &mtx, **SbVec3f** &translation, **SbRotation** &rotation, **SbVec3f** &scalefactor, **SbRotation** &scaleorientation)\
 static **SbMatrix** **appendTranslation** (const **SbMatrix** &mtx, const **SbVec3f** &translation, const **SbMatrix** \*conversion=NULL)\
 static **SbMatrix** **appendScale** (const **SbMatrix** &mtx, const **SbVec3f** &scale, const **SbVec3f** &scalecenter, const **SbMatrix** \*conversion=NULL)\
 static **SbMatrix** **appendRotation** (const **SbMatrix** &mtx, const **SbRotation** &rot, const **SbVec3f** &rotcenter, const **SbMatrix** \*conversion=NULL)\
 static void **initClass** (void)\
 static void **initClasses** (void)\

Static Public Member Functions inherited from **SoInteractionKit** static **SoType** **getClassTypeId** (void)\
 static const **SoNodekitCatalog** \* **getClassNodekitCatalog** (void)\
 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 **setSwitchValue** (**SoNode** \*node, const int newVal)\

Static Public Member Functions inherited from **SoBaseKit** static **SoType** **getClassTypeId** (void)\
 static void **initClass** (void)\
 static const **SoNodekitCatalog** \* **getClassNodekitCatalog** (void)\
 static SbBool **isSearchingChildren** (void)\
 static void **setSearchingChildren** (const SbBool newval)\

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)\

### Public Attributes

**SoSFRotation** **rotation**\

Public Attributes inherited from **SoDragger** **SoSFBool** **isActive**\

Public Attributes inherited from **SoInteractionKit** **SoSFEnum** **renderCaching**\
 **SoSFEnum** **boundingBoxCaching**\
 **SoSFEnum** **renderCulling**\
 **SoSFEnum** **pickCulling**\

### Protected Member Functions

virtual const **SoFieldData** \* **getFieldData** (void) const\
 virtual **~SoRotateDiscDragger** (void)\
 virtual SbBool **setUpConnections** (SbBool onoff, SbBool doitalways=FALSE)\
 void **dragStart** (void)\
 void **drag** (void)\
 void **dragFinish** (void)\

Protected Member Functions inherited from **SoDragger** **SoDragger** (void)\
 virtual **~SoDragger** (void)\
 **SbVec2f** **getNormalizedLocaterPosition** (void)\
 **SbVec2s** **getLocaterPosition** (void)\
 **SbVec2s** **getStartLocaterPosition** (void) const\
 void **setStartLocaterPosition** (**SbVec2s** p)\
 SbBool **isAdequateConstraintMotion** (void)\
 virtual SbBool **shouldGrabBasedOnSurrogate** (const **SoPath** \*pickpath, const **SoPath** \*surrogatepath)\
 void **setCameraInfo** (**SoAction** \*action)\
 virtual void **handleEvent** (**SoHandleEventAction** \*ha)\
 void **transferMotion** (**SoDragger** \*child)\
 void **setIgnoreInBbox** (SbBool newval)\
 SbBool **isIgnoreInBbox** (void)\
 virtual void **getBoundingBox** (**SoGetBoundingBoxAction** \*action)\
 void **setActiveChildDragger** (**SoDragger** \*newchilddragger)\
 **SoDragger** \* **getActiveChildDragger** (void) const\
 virtual void **setDefaultOnNonWritingFields** (void)\
 void **updateDraggerCache** (const **SoPath** \*path)\
 virtual const **SoPickedPoint** \* **getPickedPointForStart** (**SoHandleEventAction** \*action)\

Protected Member Functions inherited from **SoInteractionKit** virtual **~SoInteractionKit** ()\
 virtual void **copyContents** (const **SoFieldContainer** \*fromFC, SbBool copyConnections)\
 virtual SbBool **setPart** (const int partNum, **SoNode** \*node)\
 virtual SbBool **readInstance** (**SoInput** \*in, unsigned short flags)\
 virtual SbBool **setAnyPartAsDefault** (const **SbName** &partname, **SoNode** \*node, SbBool anypart=TRUE, SbBool onlyifdefault=TRUE)\
 virtual SbBool **setAnyPartAsDefault** (const **SbName** &partname, const **SbName** &nodename, SbBool anypart=TRUE, SbBool onlyifdefault=TRUE)\
 SbBool **setAnySurrogatePath** (const **SbName** &name, **SoPath** \*path, SbBool leafcheck=FALSE, SbBool publiccheck=FALSE)\
 void **connectSeparatorFields** (**SoSeparator** \*dest, SbBool onOff)\

Protected Member Functions inherited from **SoBaseKit** virtual **~SoBaseKit** ()\
 virtual **SoNode** \* **addToCopyDict** (void) const\
 **SoGroup** \* **getContainerNode** (const **SbName** &listname, SbBool makeifneeded=TRUE)\
 virtual **SoNode** \* **getAnyPart** (const **SbName** &partname, SbBool makeifneeded, SbBool leafcheck=FALSE, SbBool publiccheck=FALSE)\
 virtual **SoNodeKitPath** \* **createPathToAnyPart** (const **SbName** &partname, SbBool makeifneeded, SbBool leafcheck=FALSE, SbBool publiccheck=FALSE, const **SoPath** \*pathtoextend=NULL)\
 virtual SbBool **setAnyPart** (const **SbName** &partname, **SoNode** \*from, SbBool anypart=TRUE)\
 void **createNodekitPartsList** (void)\
 void **createFieldList** (void)\
 virtual void **createDefaultParts** (void)\
 const SoNodekitParts \* **getNodekitPartsList** (void) const\
 const **SbList**\< **SoSFNode** \* \> & **getCatalogInstances** (void) const\
 void **catalogError** (void)\
 void **countMyFields** (**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** ()\
 virtual void **destroy** (void)\
 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 **SoNodekitCatalog** \*\* **getClassNodekitCatalogPtr** (void)\
 static void **startCB** (void \*f, **SoDragger** \*d)\
 static void **motionCB** (void \*f, **SoDragger** \*d)\
 static void **doneCB** (void \*f, **SoDragger** \*d)\
 static void **fieldSensorCB** (void \*f, **SoSensor** \*s)\
 static void **valueChangedCB** (void \*f, **SoDragger** \*d)\

Static Protected Member Functions inherited from **SoDragger** static const **SoFieldData** \*\* **getFieldDataPtr** (void)\
 static const **SoNodekitCatalog** \*\* **getClassNodekitCatalogPtr** (void)\
 static void **childTransferMotionAndValueChangedCB** (void \*, **SoDragger** \*)\
 static void **childValueChangedCB** (void \*, **SoDragger** \*)\
 static void **childStartCB** (void \*, **SoDragger** \*)\
 static void **childMotionCB** (void \*, **SoDragger** \*)\
 static void **childFinishCB** (void \*, **SoDragger** \*)\
 static void **childOtherEventCB** (void \*, **SoDragger** \*)\

Static Protected Member Functions inherited from **SoInteractionKit** static const **SoFieldData** \*\* **getFieldDataPtr** (void)\
 static const **SoNodekitCatalog** \*\* **getClassNodekitCatalogPtr** (void)\
 static void **readDefaultParts** (const char \*fileName, const char defaultBuffer\[\], int defBufSize)\
 static void **fieldSensorCB** (void \*, **SoSensor** \*)\

Static Protected Member Functions inherited from **SoBaseKit** static const **SoFieldData** \*\* **getFieldDataPtr** (void)\
 static const **SoNodekitCatalog** \*\* **getClassNodekitCatalogPtr** (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)\

### Protected Attributes

**SoSFNode** **feedback**\
 **SoSFNode** **feedbackActive**\
 **SoSFNode** **feedbackSwitch**\
 **SoSFNode** **rotator**\
 **SoSFNode** **rotatorActive**\
 **SoSFNode** **rotatorSwitch**\
 **SoFieldSensor** \* **fieldSensor**\
 **SbPlaneProjector** \* **planeProj**\

Protected Attributes inherited from **SoDragger** **SoSFNode** **motionMatrix**\

Protected Attributes inherited from **SoInteractionKit** **SoSFNode** **geomSeparator**\
 **SoSFNode** **topSeparator**\
 **SoFieldSensor** \* **fieldSensor**\
 **SoSeparator** \* **oldTopSep**\

Protected Attributes inherited from **SoBaseKit** **SoSFNode** **callbackList**\
 **SoChildList** \* **children**\
 SbBool **connectionsSetUp**\

Protected Attributes inherited from **SoNode** SbUniqueId **uniqueId**\

Protected Attributes inherited from **SoFieldContainer** SbBool **isBuiltIn**\

### Additional Inherited Members

Public Types inherited from **SoDragger** enum **ProjectorFrontSetting** { **FRONT**, **BACK**, **USE\_PICK** }\

Public Types inherited from **SoInteractionKit** enum **CacheEnabled** { **OFF**, **ON**, **AUTO** }\

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 }\

Static Protected Attributes inherited from **SoNode** static SbUniqueId **nextUniqueId** = 1\
 static int **nextActionMethodIndex** = 0\

## Detailed Description

The **SoRotateDiscDragger** class is for rotating geometry around a single axis.

Here's how the dragger looks with its default geometry in the inactive state:

Use an instance of this dragger class in your scene graph to let the end-users of your application rotate geometry around a predefined axis vector in 3D.

The special feature of this dragger that sets it apart from the other draggers that provides rotation around an axis (like the **SoRotateCylindricalDragger**) is that it provides a convenient interface to rotate around an axis that is pointing in approximately the same direction as the camera. This is useful for interacting with for instance something like a "volume" knob.

For the dragger orientation and positioning itself, use some kind of transformation node in your scene graph, as usual.

## Constructor & Destructor Documentation

### SoRotateDiscDragger::SoRotateDiscDragger (void )

Default constructor, sets up the dragger nodekit catalog with the interaction and feedback geometry.

Nodekit structure (new entries versus parent class marked with arrow prefix):

```
CLASS SoRotateDiscDragger
-->"this"
      "callbackList"
      "topSeparator"
         "motionMatrix"
         "geomSeparator"
-->         "rotatorSwitch"
-->            "rotator"
-->            "rotatorActive"
-->         "feedbackSwitch"
-->            "feedback"
-->            "feedbackActive"
```

(See **SoBaseKit::printDiagram()** for information about the output formatting.)

Detailed information on catalog parts:

```
CLASS SoRotateDiscDragger
PVT   "this",  SoRotateDiscDragger  ---
      "callbackList",  SoNodeKitListPart [ SoCallback, SoEventCallback ]
PVT   "topSeparator",  SoSeparator  ---
PVT   "motionMatrix",  SoMatrixTransform  ---
PVT   "geomSeparator",  SoSeparator  ---
PVT   "rotatorSwitch",  SoSwitch  ---
      "rotator",  SoSeparator  ---
      "rotatorActive",  SoSeparator  ---
PVT   "feedbackSwitch",  SoSwitch  ---
      "feedback",  SoSeparator  ---
      "feedbackActive",  SoSeparator  ---
```

(See **SoBaseKit::printTable()** for information about the output formatting.)

### SoRotateDiscDragger::~SoRotateDiscDragger (void ) \[protected\], \[virtual\]

Protected destructor.

(Dragger classes are derived from **SoBase**, so they are reference counted and automatically destroyed when their reference count goes to 0.)

## Member Function Documentation

### SoType SoRotateDiscDragger::getClassTypeId (void ) \[static\]

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

### SoType SoRotateDiscDragger::getTypeId (void ) const \[virtual\]

Returns the type identification of an object derived from a class inheriting **SoBase**. This is used for runtime type checking and "downward" casting.

Reimplemented from **SoDragger**.

### const SoFieldData \*\* SoRotateDiscDragger::getFieldDataPtr (void ) \[static\], \[protected\]

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

 Returns the **SoFieldData** class which holds information about fields in this node.

### const SoFieldData \* SoRotateDiscDragger::getFieldData (void ) const \[protected\], \[virtual\]

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

Reimplemented from **SoDragger**.

### const SoNodekitCatalog \* SoRotateDiscDragger::getClassNodekitCatalog (void ) \[static\]

Returns the nodekit catalog which defines the layout of this class' kit.

### const SoNodekitCatalog \* SoRotateDiscDragger::getNodekitCatalog (void ) const \[virtual\]

Returns the nodekit catalog which defines the layout of this class' kit.

Reimplemented from **SoDragger**.

### const SoNodekitCatalog \*\* SoRotateDiscDragger::getClassNodekitCatalogPtr (void ) \[static\], \[protected\]

Returns the pointer to the pointer of the nodekit catalog for this class.

### void SoRotateDiscDragger::initClass (void ) \[static\]

Initializes type system for this dragger class.

Application programmers should usually not have to invoke this method, see documentation of **SoInteraction::init()**.

### SbBool SoRotateDiscDragger::setUpConnections (SbBool onoff, SbBool doitalways = FALSE) \[protected\], \[virtual\]

Sets up all internal connections for instances of this class.

(This method will usually not be of interest to the application programmer, unless you want to extend the library with new custom nodekits or dragger classes. If so, see the **SoBaseKit** class documentation.)

Reimplemented from **SoInteractionKit**.

### void SoRotateDiscDragger::startCB (void \* f, SoDragger \* d) \[static\], \[protected\]

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

### void SoRotateDiscDragger::motionCB (void \* f, SoDragger \* d) \[static\], \[protected\]

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

### void SoRotateDiscDragger::doneCB (void \* f, SoDragger \* d) \[static\], \[protected\]

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

### void SoRotateDiscDragger::fieldSensorCB (void \* d, SoSensor \* s) \[static\], \[protected\]

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

### void SoRotateDiscDragger::valueChangedCB (void \* f, SoDragger \* d) \[static\], \[protected\]

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

### void SoRotateDiscDragger::dragStart (void ) \[protected\]

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

Called when dragger is selected (picked) by the user.

### void SoRotateDiscDragger::drag (void ) \[protected\]

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

Called when user drags the mouse after picking the dragger.

### void SoRotateDiscDragger::dragFinish (void ) \[protected\]

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

Called when mouse button is released after picking and interacting with the dragger.

## Member Data Documentation

### SoSFRotation SoRotateDiscDragger::rotation

This field is continuously updated to contain the rotation of the current direction vector of the dragger.

The application programmer using this dragger in his scene graph should connect the relevant node fields in the scene to this field to make them follow the dragger orientation.

### SoFieldSensor\* SoRotateDiscDragger::fieldSensor \[protected\]

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

### SbPlaneProjector\* SoRotateDiscDragger::planeProj \[protected\]

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

## Author

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