SoCenterballDragger(3)

📦 version 2.5.0, in fedora 43, fedora 44

🎀 SoCenterballDragger(3) 🎀

okay bestie, pull up a chair 🫶 we're in the Library Functions Manual right now and today's main character is SoCenterballDragger. She is a dragger you can rotate and translate with, and honestly? she ate. 💅

💖 NAME 💖

SoCenterballDragger — the class that hands you a dragger you can rotate and translate. That's the whole vibe, no cap.

🌸 SYNOPSIS 🌸

First things first, you gotta tell the compiler she exists, so:

#include <Inventor/draggers/SoCenterballDragger.h>

and she Inherits SoDragger. Family tree matters, bestie 🌳✨

💅 Public Member Functions 💅

the ones that are hers and hers alone:

virtual SoType getTypeId (void) const
virtual const SoNodekitCatalog * getNodekitCatalog (void) const
SoCenterballDragger (void)
virtual void saveStartParameters (void)

🫶 Public Member Functions inherited from `SoDragger` 🫶

all the stuff she got from her mom, fr fr:

virtual void callback (SoCallbackAction *action)
virtual void GLRender (SoGLRenderAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void search (SoSearchAction *action)
virtual void write (SoWriteAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
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)
void setMotionMatrix (const SbMatrix &newmatrix)
void valueChanged (void)
const SbMatrix & getStartMotionMatrix (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=1)
virtual SbBool setPartAsDefault (const SbName &partname, const SbName &nodename, SbBool onlyifdefault=1)
SbBool isPathSurrogateInMySubgraph (const SoPath *path, SoPath *&pathToOwner, SbName &surrogatename, SoPath *&surrogatepath, SbBool fillargs=1)
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=0)
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=0) 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)
uint32_t 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=0)
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 *in)
void get (SbString &fielddata, SoOutput *out)
virtual SbBool validateNewFieldValue (SoField *field, void *newval)
SbBool getIsBuiltIn (void) 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
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 ⭐

these ones you can just call straight up, no instance needed bestie:

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)
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 SoNode * typeCheck (const SbName &partname, const SoType &parttype, SoNode *node)

✨ 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)
static void initClasses (void)
static uint32_t 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)

okay that's the whole inheritance flex so far 💅 and bestie, we are NOT done — this is only part 1 of 4, so keep scrolling, don't you dare close the tab 👀

✨ Static Public Member Functions inherited from `SoFieldContainer`

bestie these are the static helpers you get for free from SoFieldContainer, no cap:

static void initClass (void)
static SoType getClassTypeId (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)
static SoType getClassTypeId (void)
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 *in, SoBase *&base, SoType expectedtype)
static void setInstancePrefix (const SbString &c)
static void setTraceRefs (SbBool trace)
static SbBool getTraceRefs (void)
static SbBool connectRoute (SoInput *in, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)
static SbBool readRoute (SoInput *in)

👑 Public Attributes

the actual fields this dragger shows off. these are yours, use them:

SoSFRotation rotation — the rotation field, obvs. this is the one you wire stuff up to 💫
SoSFVec3f center — the center field, the one that gets updated when you drag instead of the motion matrix's translation part (iykyk, more on that below)

💜 Public Attributes inherited from `SoDragger`

SoSFBool isActive — is the dragger currently active? yes/no energy

🌸 Public Attributes inherited from `SoInteractionKit`

SoSFEnum renderCaching
SoSFEnum boundingBoxCaching
SoSFEnum renderCulling
SoSFEnum pickCulling

🎀 Protected Member Functions

the inner-circle stuff — protected, so it's for subclasses and the class itself, not for random callers:

virtual const SoFieldData * getFieldData (void) const
~SoCenterballDragger () — the destructor, she's protected
void transferCenterDraggerMotion (SoDragger *childdragger)
void setSwitches (SoDragger *activechild)
virtual SbBool setUpConnections (SbBool onoff, SbBool doitalways=0)
virtual void setDefaultOnNonWritingFields (void)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
virtual void getMatrix (SoGetMatrixAction *action)

🧚 Protected Member Functions inherited from `SoDragger`

SoDragger (void)
virtual ~SoDragger ()
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)
void setActiveChildDragger (SoDragger *newchilddragger)
SoDragger * getActiveChildDragger (void) const
void updateDraggerCache (const SoPath *path)

🦋 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=1, SbBool onlyifdefault=1)
virtual SbBool setAnyPartAsDefault (const SbName &partname, const SbName &nodename, SbBool anypart=1, SbBool onlyifdefault=1)
SbBool setAnySurrogatePath (const SbName &name, SoPath *path, SbBool leafcheck=0, SbBool publiccheck=0)
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=1)
virtual SoNode * getAnyPart (const SbName &partname, SbBool makeifneeded, SbBool leafcheck=0, SbBool publiccheck=0)
virtual SoNodeKitPath * createPathToAnyPart (const SbName &partname, SbBool makeifneeded, SbBool leafcheck=0, SbBool publiccheck=0, const SoPath *pathtoextend=NULL)
virtual SbBool setAnyPart (const SbName &partname, SoNode *from, SbBool anypart=1)
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)
~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

✨ Static Protected Member Functions

these are the callbacks and helpers that make the magic happen behind the scenes:

static const SoFieldData ** getFieldDataPtr (void)
static const SoNodekitCatalog ** getClassNodekitCatalogPtr (void)
static void fieldSensorCB (void *f, SoSensor *s)
static void valueChangedCB (void *f, SoDragger *d)
static void kidStartCB (void *f, SoDragger *d)
static void kidFinishCB (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

the dragger's internal furniture, all protected, all part of the vibe:

SoSFNode XAxis
SoSFNode XAxisSwitch
SoSFNode XCenterChanger
SoSFNode XRotator
SoSFNode YAxis
SoSFNode YAxisSwitch
SoSFNode YCenterChanger
SoSFNode YRotator
SoSFNode ZAxis
SoSFNode ZAxisSwitch
SoSFNode ZCenterChanger
SoSFNode ZRotator
SoSFNode antiSquish
SoSFNode lightModel
SoSFNode rot2X90
SoSFNode rotX90
SoSFNode rotY90
SoSFNode rotator
SoSFNode surroundScale
SoSFNode translateToCenter
SoFieldSensor * rotFieldSensor
SoFieldSensor * centerFieldSensor

🍓 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`

uint32_t uniqueId

🎀 Protected Attributes inherited from `SoFieldContainer`

SbBool isBuiltIn

🫶 Additional Inherited Members

the rest of the family tree, all the types and statics you inherit from way up the chain:

👑 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 }

🦋 Protected Types inherited from `SoBase`

enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }

🌸 Static Protected Attributes inherited from `SoNode`

static uint32_t nextUniqueId = 0
static int nextActionMethodIndex = 0

🎀 Detailed Description

okay so SoCenterballDragger is a dragger you can rotate and translate. both. it's giving main character energy fr fr 💅

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

(picture it bestie — that's the figure in the original, the dragger just chilling, inactive, default geometry, not a care in the world)

For rotation, click either the ball "bands" to constrain rotation to happen around the normal vector of the disc, or anywhere else on the (invisible) ball for free-form rotation. yes the ball is invisible, it's lowkey mysterious like that 🫥

Translation is done by clicking and dragging any of the four arrow markers. Hold SHIFT to constrain translation to a single axis instead of in the plane. so if you're like "no, just one axis pls" — shift is your girl 💖

When translating, instead of modifying the translation part of the motion matrix, a center field is updated, and the geometry is moved using an internal transformation node. that's the whole trick, periodt.

Here's a simple usage example, in the form of a scene graph as an iv-file:

#Inventor V2.1 ascii

Separator {

   # The dragger, offset a little bit against the geometry to clip,
   # so as to not mess up the user interface.
   Separator {
      Translation { translation -4 0 0 }
      DEF cbdragger CenterballDragger { }
   }

   # The clipping plane sub-graph.
   TransformSeparator {

      # Connect transformations to those of the dragger.
      Rotation { rotation 0 0 1 0 = USE cbdragger . rotation }
      Translation { translation 0 0 0 = USE cbdragger . center }

      # Use a simple lineset-based indicator to show how the
      # clipping plane is situated in space.
      Coordinate3 {
         point [
          0 2 2, 0 2 -2,
          0 -2 2, 0 -2 -2,
          0 2 -2, 0 -2 -2,
          0 2 2, 0 -2 2
       ]
      }
      LineSet { numVertices [ 2, 2, 2, 2 ] }

      ClipPlane { }
   }

   # Then follows the geometry that gets clipped. For this
   # example, we use a simple sphere.

   Sphere { }
}

like, the dragger is DEF'd as cbdragger, and then the clipping sub-graph just does = USE cbdragger . rotation and = USE cbdragger . center and suddenly the clip plane follows your every move 🦋 iconic, honestly.

✨ Constructor & Destructor Documentation ✨

💖 SoCenterballDragger::SoCenterballDragger (void )

Okay bestie, this is the default constructor, and it sets up the dragger nodekit catalog with the interaction and feedback geometry. It's giving structural excellence, no cap. 🫶

Node kit structure — new entries versus the parent class are marked with that little arrow prefix:

CLASS SoCenterballDragger
-->"this"
      "callbackList"
      "topSeparator"
         "motionMatrix"
-->      "translateToCenter"
-->      "surroundScale"
-->      "antiSquish"
-->      "lightModel"
         "geomSeparator"
-->         "XAxisSwitch"
-->            "XAxis"
-->         "YAxisSwitch"
-->            "YAxis"
-->         "ZAxisSwitch"
-->            "ZAxis"
-->      "rotator"
-->      "YRotator"
-->      "ZCenterChanger"
-->      "rotX90"
-->      "ZRotator"
-->      "YCenterChanger"
-->      "rotY90"
-->      "XCenterChanger"
-->      "rot2X90"
-->      "XRotator"

If you wanna know more about how that output formatting works, see SoBaseKit::printDiagram(). 💅

Detailed information on catalog parts:

CLASS SoCenterballDragger
PVT   "this",  SoCenterballDragger  ---
      "callbackList",  SoNodeKitListPart [ SoCallback, SoEventCallback ]
PVT   "topSeparator",  SoSeparator  ---
PVT   "motionMatrix",  SoMatrixTransform  ---
      "translateToCenter",  SoMatrixTransform  ---
      "surroundScale",  SoSurroundScale  ---
      "antiSquish",  SoAntiSquish  ---
      "lightModel",  SoLightModel  ---
PVT   "geomSeparator",  SoSeparator  ---
      "rotator",  SoRotateSphericalDragger  ---
      "YRotator",  SoRotateCylindricalDragger  ---
      "ZCenterChanger",  SoTranslate2Dragger  ---
PVT   "rotX90",  SoRotation  ---
      "ZRotator",  SoRotateCylindricalDragger  ---
      "YCenterChanger",  SoTranslate2Dragger  ---
PVT   "rotY90",  SoRotation  ---
      "XCenterChanger",  SoTranslate2Dragger  ---
PVT   "rot2X90",  SoRotation  ---
PVT   "XAxisSwitch",  SoSwitch  ---
      "XAxis",  SoSeparator  ---
PVT   "YAxisSwitch",  SoSwitch  ---
      "YAxis",  SoSeparator  ---
PVT   "ZAxisSwitch",  SoSwitch  ---
      "ZAxis",  SoSeparator  ---
      "XRotator",  SoRotateCylindricalDragger  ---

And for the formatting tea on that table, see SoBaseKit::printTable(). ✨

References:

SoDragger::addValueChangedCallback()
center
centerFieldSensor
fieldSensorCB()
SbMatrix::identity()
SoMatrixTransform::matrix
SoInteractionKit::readDefaultParts()
SoAntiSquish::recalcAlways
rotation
SoRotation::rotation
rotFieldSensor
SoInteractionKit::setPartAsDefault()
setUpConnections()
SoAntiSquish::sizing
SoCenterballDragger()
valueChangedCB()

Referenced by:

fieldSensorCB()
getFieldData()
kidFinishCB()
kidStartCB()
SoCenterballDragger()
valueChangedCB()

🔒 SoCenterballDragger::~SoCenterballDragger () [protected]

This one is the protected destructor. It stays protected, okay? 🙈

(Dragger classes are derived from SoBase, so they are reference counted and automatically destroyed when their reference count goes to 0.) That's the whole vibe — no manual delete drama. 💀

References: centerFieldSensor, and rotFieldSensor.

🦋 Member Function Documentation 🦋

`SoType SoCenterballDragger::getTypeId (void) const [virtual]`

okay so this one hands you back the type identification of an object derived from SoBase. It's literally the entire reason run-time type checking and "downward" casting work, no cap. 🔍

Usage example:

void foo(SoNode * node)
{
  if (node->getTypeId() == SoFile::getClassTypeId()) {
    SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
  }
  else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {
    SoGroup * group = (SoGroup *)node;  // safe downward cast, knows the type
  }
}

Now for all the application programmers out there who wanna extend the library with new nodes, engines, nodekits, draggers or others: this method has to be overridden in all subclasses, no exceptions bestie. You typically do that as part of setting up the full type system for your extension classes, which is usually accomplished 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 info on writing Coin extensions, check the class documentation of the toplevel superclasses for the various class groups. 📚

Reimplemented from SoDragger.

`const SoFieldData * SoCenterballDragger::getFieldData (void) const [protected], [virtual]`

Returns a pointer to the class-wide field data storage object for this instance. And if there are no fields present? It returns NULL. That's it, that's the whole vibe. 🫶

Reimplemented from SoDragger.

References SoCenterballDragger().

`const SoNodekitCatalog * SoCenterballDragger::getNodekitCatalog (void) const [virtual]`

Returns the nodekit catalog which defines the layout of this class' kit. It's giving architectural blueprint but make it a catalog. 👑

Reimplemented from SoDragger.

`void SoCenterballDragger::saveStartParameters (void) [virtual]`

This gets invoked to save start parameters, so that draggers can calculate relative motion. That's the whole point. 📐

The default method over in the superclass SoDragger just saves the motion matrix — but subclasses should overload this method if any other data needs saving too. Don't leave your extra data hanging, bestie.

Reimplemented from SoDragger.

References SoDragger::getMotionMatrix(), and SoDragger::saveStartParameters().

`void SoCenterballDragger::transferCenterDraggerMotion (SoDragger * childdragger) [protected]`

You should call this one after the motion matrix has been updated by a child dragger. Timing matters, fr fr. ⏱️

References center, centerFieldSensor, SoDragger::enableValueChangedCallbacks(), SoDragger::getMotionMatrix(), SbRotation::inverse(), SoMatrixTransform::matrix, SbMatrix::multVecMatrix(), rotation, SoDragger::setMotionMatrix(), SbMatrix::setRotate(), SbMatrix::setTranslate(), and SoDragger::SoDragger().

`void SoCenterballDragger::setSwitches (SoDragger * activechild) [protected]`

Sets values for the internal SoSwitch parts. And heads up: if activechild == NULL, then all feedback is deactivated. Like, every bit of it. 🙈

References SoInteractionKit::setSwitchValue(), and SoDragger::SoDragger().

Referenced by kidFinishCB(), and kidStartCB().

`SbBool SoCenterballDragger::setUpConnections (SbBool onoff, SbBool doitalways = 0) [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 wanna extend the library with new custom nodekits or dragger classes. If that's you, go see the SoBaseKit class documentation.)

Reimplemented from SoInteractionKit.

References center, centerFieldSensor, SoBaseKit::connectionsSetUp, fieldSensorCB(), SoBaseKit::getAnyPart(), SbString::getString(), rotation, rotFieldSensor, SoInteractionKit::setPartAsDefault(), SoBaseKit::setUpConnections(), SoDragger::SoDragger(), and SbString::sprintf().

Referenced by SoCenterballDragger().

`void SoCenterballDragger::setDefaultOnNonWritingFields (void) [protected], [virtual]`

(Be aware that this method is unlikely to be of interest to the application programmer who does not want to extend the library with new custom nodekits or draggers. If you indeed are writing extensions, see the info in the SoBaseKit class documentation.)

This is a virtual method, and the code inside it should call SoField::setDefault() with argument TRUE on part fields that should not be written upon scenegraph export operations. 🚫📝

This is typically done when:

field value is NULL and part is NULL by default
it is a leaf SoGroup or SoSeparator node with no children
it is a leaf listpart with no children and an SoGroup or SoSeparator container
it is a non-leaf part and it's of SoGroup type and all fields are at their default values

Subclasses should usually override this to do additional settings for new member fields. And from the subclass, do remember to call "upwards" to your superclass' setDefaultOnNonWritingFields() method. Don't forget your ancestors, bestie. 🫶

Reimplemented from SoDragger.

References SoDragger::setDefaultOnNonWritingFields().

`void SoCenterballDragger::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. 🫥

References center, SoDragger::getMotionMatrix(), SoMatrixTransform::matrix, SoDragger::setMotionMatrix(), SbMatrix::setTranslate(), SoCenterballDragger(), and SoDragger::workFieldsIntoTransform().

Referenced by setUpConnections(), and SoCenterballDragger().

`void SoCenterballDragger::valueChangedCB (void * f, SoDragger * d) [static], [protected]`

Another internal-to-the-library API member, not likely to be of interest to the application programmer. You know the drill. 💅

References SoFieldSensor::attach(), center, centerFieldSensor, SoFieldSensor::detach(), SoDragger::getMotionMatrix(), SbMatrix::getTransform(), SbMatrix::inverse(), SbMatrix::multLeft(), SbMatrix::multRight(), rotation, rotFieldSensor, SbMatrix::setRotate(), SbMatrix::setTranslate(), SoCenterballDragger(), and SoDragger::SoDragger().

Referenced by SoCenterballDragger().

`void SoCenterballDragger::kidStartCB (void * d, SoDragger * child) [static], [protected]`

Internal-to-the-library API member, not likely to be of interest to the application programmer. But also — it's needed to activate some feedback. So it's doing important work behind the scenes, lowkey a main character. 🔥

References SoBaseKit::getPart(), SoSurroundScale::invalidate(), setSwitches(), SoCenterballDragger(), and SoDragger::SoDragger().

`void SoCenterballDragger::kidFinishCB (void * d, SoDragger * child) [static], [protected]`

Internal-to-the-library API member, not likely to be of interest to the application programmer. This one is needed to deactive some feedback (yes, "deactive" — that's what the docs say, we don't fix it, we respect it 😌).

References SoBaseKit::getPart(), SoSurroundScale::invalidate(), setSwitches(), SoCenterballDragger(), and SoDragger::SoDragger().

`void SoCenterballDragger::getBoundingBox (SoGetBoundingBoxAction * action) [protected], [virtual]`

Action method for the SoGetBoundingBoxAction. 📦

It calculates the bounding box and center coordinates for the node, and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

Nodes that influence how geometry nodes calculate their bounding box also override this method to change the relevant state variables.

Reimplemented from SoDragger.

References SoDragger::getBoundingBox(), SoBaseKit::getPart(), SoSurroundScale::isDoingTranslations(), and SoSurroundScale::setDoingTranslations().

`void SoCenterballDragger::getMatrix (SoGetMatrixAction * action) [protected], [virtual]`

Action method for SoGetMatrixAction. 🔢

It updates the action by accumulating with the transformation matrix of this node (if any).

Reimplemented from SoDragger.

References SoDragger::getMatrix(), SoBaseKit::getPart(), SoSurroundScale::isDoingTranslations(), and SoSurroundScale::setDoingTranslations().

🌸 Member Data Documentation 🌸

`SoSFRotation SoCenterballDragger::rotation`

This field is continuously updated to contain the rotation of the ball. Spinning, rotating, iconic behavior. 🎀

Referenced by setUpConnections(), SoCenterballDragger(), transferCenterDraggerMotion(), and valueChangedCB().

`SoSFVec3f SoCenterballDragger::center`

Continuously updated to contain the current translation from the dragger's internal local origo position. 📍

Referenced by fieldSensorCB(), setUpConnections(), SoCenterballDragger(), transferCenterDraggerMotion(), and valueChangedCB().

`SoFieldSensor* SoCenterballDragger::rotFieldSensor [protected]`

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

Referenced by setUpConnections(), SoCenterballDragger(), valueChangedCB(), and ~SoCenterballDragger().

`SoFieldSensor* SoCenterballDragger::centerFieldSensor [protected]`

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. Same energy as its sibling above. 💫

Referenced by setUpConnections(), SoCenterballDragger(), transferCenterDraggerMotion(), valueChangedCB(), and ~SoCenterballDragger().

💜 Author 💜

Generated automatically by Doxygen for Coin from the source code. Not a human, just a robot doing its little documentation dance. 🤖✨

and that's a wrap on SoCenterballDragger(3) bestie!! this whole page came from Coin, Version 2.5.0, and it's dated with that footer energy — so if you're citing it, that's the version and the source you're repping. periodt. 💖🎀🦋🌸

📦 where this page comes from

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fedora 43: Coin2-devel 2.5.0-52.fc43 · GPL-2.0-only
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fedora 44: Coin2-devel 2.5.0-54.fc44 · GPL-2.0-only
💖 girlified by deepseek-ai/DeepSeek-V4.1-Flash on 2026-10-14: a language model's rewrite of the original, under its terms

SoCenterballDragger(3)