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SoDragger Class

Base class for nodekits that move in response to click-drag-release mouse events.

Inheritance Hierarchy

Namespace: OIV.Inventor.Draggers
Assembly: OIV.Inventor (in OIV.Inventor.dll) Version: 2023.1.3.0 (2023.1.3)
Syntax
public class SoDragger : SoInteractionKit

The SoDragger type exposes the following members.

Methods
  NameDescription
Public methodAffectsState

Returns true if a node has an effect on the state during traversal.

(Inherited from SoNode.)
Public methodCallback
(Inherited from SoBaseKit.)
Public methodClearOtherEventCallbacks
Public methodCopy
Calls Copy(false).
(Inherited from SoNode.)
Public methodCopy(Boolean)

Creates and returns an exact copy of the node.

(Inherited from SoNode.)
Public methodCopyFieldValues(SoFieldContainer)
Calls CopyFieldValues(fc, false).
(Inherited from SoFieldContainer.)
Public methodCopyFieldValues(SoFieldContainer, Boolean)

Copies the contents of fc's fields into this object's fields.

(Inherited from SoFieldContainer.)
Public methodCreatePathToPart(String, Boolean)
Calls CreatePathToPart(partName, makeIfNeeded, (OIV.Inventor.SoPath ^)nullptr).
(Inherited from SoBaseKit.)
Public methodCreatePathToPart(String, Boolean, SoPath)

Returns a path that begins at this nodekit and ends at partName.

(Inherited from SoBaseKit.)
Public methodCreatePathToThis
Public methodDispose
Releases all resources used by SoDisposable.
(Inherited from SoDisposable.)
Public methodDistribute
(Inherited from SoNode.)
Public methodDoAction
(Inherited from SoBaseKit.)
Public methodEnableNotify

Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false).

(Inherited from SoFieldContainer.)
Public methodEnableValueChangedEvent

You can temporarily disable a dragger's valueChangedCallbacks.

Public methodEquals
Determines whether the specified Object is equal to the current Object.
(Inherited from Object.)
Public methodFieldsAreEqual

Returns true if this object's fields are exactly equal to fc's fields.

(Inherited from SoFieldContainer.)
Public methodGet

Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string.

(Inherited from SoFieldContainer.)
Public methodGetAllFields

Returns a list of fields, including the eventIn's and eventOut's.

(Inherited from SoFieldContainer.)
Public methodGetAlternateRep

This method is called by actions to allow the node to provide an "alternate representation" when appropriate (typically depending on the action type).

(Inherited from SoNode.)
Public methodGetBoundingBox
(Inherited from SoBaseKit.)
Public methodStatic memberGetClassNodekitCatalog

Returns the OIV.Inventor.Nodekits.SoNodekitCatalog for this class.

Public methodGetEvent
Public methodGetEventIn

Returns a the eventIn with the given name.

(Inherited from SoFieldContainer.)
Public methodGetEventOut

Returns the eventOut with the given name.

(Inherited from SoFieldContainer.)
Public methodGetField

Returns a the field of this object whose name is fieldName.

(Inherited from SoFieldContainer.)
Public methodGetFieldName

Returns the name of the given field in the fieldName argument.

(Inherited from SoFieldContainer.)
Public methodGetFields

Appends references to all of this object's fields to resultList, and returns the number of fields appended.

(Inherited from SoFieldContainer.)
Public methodGetHandleEventAction
Public methodGetHashCode
Overrides GetHashCode().
(Inherited from SoNetBase.)
Public methodStatic memberGetInitialTrackerDirectMode

Get the initial tracker direct mode.

Public methodGetLocalStartingPoint
Public methodGetLocalToWorldMatrix
Calls GetLocalToWorldMatrix((OIV.Inventor.Actions.SoAction ^)nullptr).
Public methodGetLocalToWorldMatrix(SoAction)
Public methodGetMatrix
(Inherited from SoBaseKit.)
Public methodGetMinGesture

Gets the number of pixels of movement required to initiate a constraint gesture.

Public methodGetMinGestureFloat
Public methodStatic memberGetMinScale

Gets the smallest scale that any dragger will write.

Public methodGetMotionMatrix

Get the motion matrix.

Public methodGetName

Returns the name of an instance.

(Inherited from SoBase.)
Public methodGetNodekitCatalog (Inherited from SoBaseKit.)
Public methodGetPart

Searches the nodekit catalog (and those of all nested nodekits) for the part named partName.

(Inherited from SoBaseKit.)
Public methodGetPartString

Given a node or a path to a node, checks if the part exists in the nodekit, in a nested nodekit, or an element of a list part.

(Inherited from SoBaseKit.)
Public methodGetPartToLocalMatrix
Public methodGetPickPath
Public methodGetPrimitiveCount
(Inherited from SoBaseKit.)
Public methodGetRenderEngineMode

Returns the supported Render engine mode.

(Inherited from SoNode.)
Public methodGetRenderUnitID
(Inherited from SoNode.)
Public methodGetStartMotionMatrix
Public methodGetStringName (Inherited from SoBase.)
Public methodGetSurrogatePartPickedName
Public methodGetSurrogatePartPickedOwner
Public methodGetSurrogatePartPickedPath
Public methodGetTrackerDirectMode

Get the current tracker direct mode for this dragger.

Public methodStatic memberGetTransformFast(SbMatrix, SbVec3f, SbRotation, SbVec3f, SbRotation)
Public methodStatic memberGetTransformFast(SbMatrix, SbVec3f, SbRotation, SbVec3f, SbRotation, SbVec3f)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodGetViewportIsEnabled (Inherited from SoBaseKit.)
Public methodGetViewportOrigin (Inherited from SoBaseKit.)
Public methodGetViewportRegion Obsolete.
Public methodGetViewportSize (Inherited from SoBaseKit.)
Public methodGetViewVolume Obsolete.

Dragger must not store information related to viewer settings.

Public methodGetWorldStartingPoint
Public methodGetWorldToLocalMatrix
Calls GetWorldToLocalMatrix((OIV.Inventor.Actions.SoAction ^)nullptr).
Public methodGetWorldToLocalMatrix(SoAction)
Public methodGLRender
(Inherited from SoBaseKit.)
Public methodGLRenderBelowPath
(Inherited from SoNode.)
Public methodGLRenderInPath
(Inherited from SoNode.)
Public methodGLRenderOffPath
(Inherited from SoNode.)
Public methodGrabEventsCleanup
(Inherited from SoNode.)
Public methodGrabEventsSetup
(Inherited from SoNode.)
Public methodHandleEvent
(Inherited from SoBaseKit.)
Public methodHasDefaultValues

Returns true if all of the object's fields have their default values.

(Inherited from SoFieldContainer.)
Public methodInvokeValueChanged

Public methodIsBoundingBoxIgnoring

Returns true if bounding box computation should be ignored during OIV.Inventor.Actions.SoGetBoundingBoxAction traversal.

(Inherited from SoBaseKit.)
Public methodIsNotifyEnabled

Notification is the process of telling interested objects that this object has changed.

(Inherited from SoFieldContainer.)
Public methodIsOverride

Returns the state of the override flag.

(Inherited from SoNode.)
Public methodIsPathSurrogateInMySubgraph(SoPath)
(Inherited from SoInteractionKit.)
Public methodIsPathSurrogateInMySubgraph(SoPath, SoPath, String, SoPath)
Calls IsPathSurrogateInMySubgraph(pathToCheck, pathToOwner, surrogateNameInOwner, surrogatePathInOwner, true).
(Inherited from SoInteractionKit.)
Public methodIsPathSurrogateInMySubgraph(SoPath, SoPath, String, SoPath, Boolean)
(Inherited from SoInteractionKit.)
Public methodIsSynchronizable

Gets the ScaleViz synchronizable state of this object.

(Inherited from SoBase.)
Public methodIsTrackerDirectMode
Public methodPick
(Inherited from SoNode.)
Public methodRayPick
(Inherited from SoBaseKit.)
Public methodRegisterChildDragger
Public methodRegisterChildDraggerMovingIndependently
Public methodSaveStartParameters
Public methodSearch
(Inherited from SoBaseKit.)
Public methodSet(String)

This function allows field values of parts (nodes) to be set in several different parts simultaneously.

(Inherited from SoBaseKit.)
Public methodSet(String, String)

This function allows field values of parts (nodes) to be set.

(Inherited from SoBaseKit.)
Public methodSetHandleEventAction
Public methodStatic memberSetInitialTrackerDirectMode
Calls SetInitialTrackerDirectMode(OIV.Inventor.Draggers.SoDragger.TrackerDirectModes( .SoDragger.DEFAULT )).
Public methodStatic memberSetInitialTrackerDirectMode(SoDraggerTrackerDirectModes)

Set the initial tracker direct mode for draggers not yet created.

Public methodSetMinGesture(Int32)

Sets the number of pixels of movement required to initiate a constraint gesture.

Public methodSetMinGesture(Single)
Public methodStatic memberSetMinScale

Sets the smallest scale that any dragger will write.

Public methodSetMotionMatrix

Set the motion matrix.

Public methodSetName (Inherited from SoBase.)
Public methodSetOverride

Turns the override flag on or off.

(Inherited from SoNode.)
Public methodSetPart

Inserts the given node (not a copy) as the new part specified by partName.

(Inherited from SoBaseKit.)
Public methodSetPartAsDefault(String, SoNode)
Calls SetPartAsDefault(partName, newNode, true).
(Inherited from SoInteractionKit.)
Public methodSetPartAsDefault(String, String)
Calls SetPartAsDefault(partName, newNodeName, true).
(Inherited from SoInteractionKit.)
Public methodSetPartAsDefault(String, SoNode, Boolean)
(Inherited from SoInteractionKit.)
Public methodSetPartAsDefault(String, String, Boolean)
(Inherited from SoInteractionKit.)
Public methodSetPartAsPath

Sets any public part in the interaction kit as a "surrogate" path instead.

(Inherited from SoInteractionKit.)
Public methodSetStartingPoint(SbVec3f)
Public methodSetStartingPoint(SoPickedPoint)
Public methodSetSynchronizable

Sets this to be a ScaleViz synchronizable object.

(Inherited from SoBase.)
Public methodSetTempPathToThis
Public methodSetToDefaults

Sets all fields in this object to their default values.

(Inherited from SoFieldContainer.)
Public methodSetTrackerDirectMode
Calls SetTrackerDirectMode(OIV.Inventor.Draggers.SoDragger.TrackerDirectModes( .SoDragger.DEFAULT )).
Public methodSetTrackerDirectMode(SoDraggerTrackerDirectModes)

Sets the tracker direct mode for this dragger (see description above).

Public methodSetViewportRegion Obsolete.
Public methodSetViewVolume Obsolete.
Public methodToString
Converts this SoBase structure to a human readable string.
(Inherited from SoBase.)
Public methodTouch

Marks an instance as modified, simulating a change to it.

(Inherited from SoNode.)
Public methodTransformMatrixLocalToWorld
Public methodTransformMatrixToLocalSpace
Public methodTransformMatrixWorldToLocal
Public methodUnregisterChildDragger
Public methodUnregisterChildDraggerMovingIndependently
Public methodWorkFieldsIntoTransform
Public methodWrite
(Inherited from SoBaseKit.)
Top
Properties
  NameDescription
Public propertyboundingBoxCaching
(Inherited from SoInteractionKit.)
Public propertyboundingBoxIgnoring

Whether to ignore this node during bounding box traversal.

(Inherited from SoBaseKit.)
Public propertyenableCallbacks

If set to false, motion, start and finish callbacks are disabled.

Public propertyisActive

true when mouse is down and dragging, else false.

Public propertyIsDisposable
ISafeDisposable interface implementation.
(Inherited from SoDisposable.)
Public propertypickCulling

Set pick caching mode.

(Inherited from SoInteractionKit.)
Public propertyrenderCaching Obsolete.

Set render caching mode.

(Inherited from SoInteractionKit.)
Public propertyrenderCulling

Set render culling mode.

(Inherited from SoInteractionKit.)
Public propertyUserData
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.)
Top
Events
Remarks

OIV.Inventor.Draggers.SoDragger is the base class for all nodekits you move by using the mouse to click-drag-and-release. More specifically, they are operated by a start (mouse button 1 pressed over dragger to pick it), followed by dragging (mouse motion events are interpreted by the dragger and result in some form of motion and/or change to a field), followed by finish (mouse up).

Each dragger has a different paradigm for interpreting mouse motion and changing its fields as a result. Draggers map 2D mouse motion into motion of a point on 3D lines, planes, spheres, or cylinders. (See the OIV.Inventor.Projectors.SbProjector reference pages.) Then they react to this motion of a point through 3-space by scaling, translating, or rotating. For example, OIV.Inventor.Draggers.SoTranslate2Dragger maps mouse motion onto a 3D plane, then translates to follow the cursor as it moves within that plane.

Beginning with version 3.0, draggers also respond to tracked input device events (see OIV.Inventor.Events.SoControllerButtonEvent and OIV.Inventor.Events.SoTrackerEvent) in order to support immersive VR devices like a wand. Interaction is started by pressing wand button 1 when the tracker "ray" intersects the dragger's geometry. Analogous to 2D, in which the interaction is driven by tracking the ray from the 2D mouse cursor, in 3D the interaction is driven by tracking the ray emanating from the tracking device.

Beginning with version 5.0, draggers can also take position and orientation changes directly from the tracker's position and orientation. Specifically the difference between the tracker's current values and the values at the start of the interaction is applied as an incremental change to the dragger. In general this is a more natural way to manipulate objects in an immersive environment. You can use the OIV.Inventor.Draggers.SoDragger.SetTrackerDirectMode(OIV.Inventor.Draggers.SoDragger.TrackerDirectModes) method to enable this behavior.

  • If mode is NONE, the dragger will not use tracker values directly (but it will still respond to tracker events in the version 3.0 way).

  • If mode is DEFAULT, the dragger's natural default direct behavior will be used (either NONE, MOVE, ROTATE, or FREE depending on the dragger class).

  • If mode is MOVE or ROTATE, the dragger will use the tracker's position or orientation directly.

  • If mode is FREE, the dragger will use the tracker's position and orientation directly.

Every dragger has fields that describe its current state. Scaling draggers have a scaleFactor field, rotational draggers have a rotation field, etc. All draggers have the OIV.Inventor.Draggers.SoDragger.isActive field, defined in this class. It is true while the dragger is being dragged, false otherwise.

Draggers that have only one part to pick and one motion field are called simple draggers. Examples are the OIV.Inventor.Draggers.SoRotateDiscDragger, OIV.Inventor.Draggers.SoScale1Dragger, and OIV.Inventor.Draggers.SoTranslate2Dragger.

Draggers that create assemblies out of other draggers and then orchestrate the motion of the whole assembly are called composite draggers. OIV.Inventor.Draggers.SoTransformBoxDragger is a composite dragger made entirely of simple draggers. OIV.Inventor.Draggers.SoDirectionalLightDragger contains both a simple dragger (OIV.Inventor.Draggers.SoRotateSphericalDragger) and a composite dragger (OIV.Inventor.Draggers.SoDragPointDragger) When using a composite dragger, the fields of the composite dragger are the ones you should work with. Draggers lower down in the assemblage usually have zeroed out values. For example, when you drag the face of a transformBox, an OIV.Inventor.Draggers.SoTranslate2Dragger, the transformBox "steals" the translation from the child dragger and transfers it up to the top of the composite dragger, where it effects all pieces of the assemblage.

Using draggers:

Draggers always keep their fields up to date, including while they are being dragged. So you can use field-to-field connections and engines to connect dragger values to other parts of your scene graph. Hence draggers can be easily utilized as input devices for mouse-driven 3D interface elements. You can also register value-changed delegates,which are called whenever any of the fields is changed. See example below.

This makes it easy to constrain draggers to keep their fields within certain limits: if the limit is exceeded, just set it back to the exceeded maximum or minimum. You can do this even as the dragger is in use, by constraining the field value within a value-changed delegatethat you add with OIV.Inventor.Draggers.SoDragger.ValueChanged(). In this case, be sure to temporarily disable the other value-changed delegatesusing OIV.Inventor.Draggers.SoDragger.EnableValueChangedEvent(System.Boolean). Doing this will prevent infinite-looping. See example below.

Also, if you set the field of a dragger through some method other than dragging, (by calling setValue(), for example), the dragger's internal OIV.Inventor.Sensors.SoFieldSensor will sense this and the dragger will move to satisfy that new value. This is useful to set the initial position (orientation, etc) of the dragger.

Draggers have a fixed orientation with respect to their local coordinate system. For example the OIV.Inventor.Draggers.SoTranslate1Dragger drags along its local X axis, the OIV.Inventor.Draggers.SoTranslate2Dragger drags in its local XY plane, etc. Some draggers, for example OIV.Inventor.Draggers.SoTrackballDragger, have a built-in rotation field that allows modifying the dragger's initial orientation. For other draggers you can put the dragger and a transform node under an OIV.Inventor.Nodes.SoSeparator and use the transform node to change the dragger's orientation. For example, rotate an OIV.Inventor.Draggers.SoTranslate1Dragger so it effectively drags along the world coordinate Y axis.

Draggers can have zero or more of the following delegates: - Start: called when manipulation starts

  • Motion: called after each mouse movement during manipulation

  • Value-changed: called when any of the dragger's fields change

  • Finish: called when manipulation finishes

Draggers vs Manipulators:

When you drag a dragger, the dragger only moves itself. Draggers do not change the state or affect objects that follow in the scene graph. For example a dragger does not ever behave like an OIV.Inventor.Nodes.SoTransform and change the current transformation matrix. Draggers are not transforms, even if they have field names like translation, rotation, scaleFactor. The application must connect the dragger to a transform node or use a delegate to update some other object in the scene graph (see example below).

However many draggers, such as OIV.Inventor.Draggers.SoTrackballDragger, have a corresponding OIV.Inventor.Manips.SoTransformManip, in this case OIV.Inventor.Manips.SoTrackballManip. The manipulator is a subclass of OIV.Inventor.Nodes.SoTransform, and affects other objects in the scene; it uses a trackball dragger to provide its user interface. In this way, draggers are employed extensively by manipulators. The dragger notifies its employer of start, motion, finish, and value changes. (See the various reference pages for more details on specific draggers and manipulators).

Customizing draggers:

All draggers are nodekits. However, draggers do not list their parts in the Parts section of the reference page. Instead, there is a section called Dragger Resources, more suited to describe the parts made available to the programmer. Each dragger has some parts you can pick on, and other parts that replace them when they are active or moving. These active parts are often just the same geometry in another color. Draggers also have parts for displaying feedback. Each of these parts has a default scene graph, as well as a special function within the dragger. Each part also has a resource name. All this information is contained in the DRAGGER RESOURCES section.

Since draggers are nodekits, you can change a part in a dragger that has already been built using the OIV.Inventor.Nodekits.SoBaseKit.SetPart(System.String, OIV.Inventor.Nodes.SoNode) method. For example, to change the "rotator" part of an OIV.Inventor.Draggers.SoTrackballDragger:

SoTrackballDragger dragger = new SoTrackballDragger();
dragger.SetPart( "rotator", geometry );
dragger.SetPart( "rotator", null );

But draggers also give each part a resource name. The default part geometries are defined as resources for each class, and each class has a file you can change to alter the defaults. The files are listed in each dragger's reference page. For example, the OIV.Inventor.Draggers.SoCenterballDragger loads the file "centerballDragger.iv". You can make your program use different default resources for the parts by copying the listed file from the directory $OIVHOME/data/draggerDefaults into your own directory, editing the file, and then setting the environment variable SO_DRAGGER_DIR to be a path to that directory. In general applications should not directly modify files in the Open Inventor SDK directories.

SO_DRAGGER_DIR

  • Resources for each dragger class are loaded from SO_DRAGGER_DIR (if defined) when the first instance of that class is created. It is not necessary to set SO_DRAGGER_DIR before initializing Open Inventor.

  • OIV.Inventor.SoInput's default directory separator rules apply, i.e. the default directory separator is ":;" ( either colon or semicolon). Unfortunately this means that, on Microsoft Windows, the string "C:/myDir" will be interpreted as TWO separate directories "C/" and "/myDir".

When a dragger builds a part, it looks in the global dictionary (i.e. calls OIV.Inventor.Nodes.SoNode.GetByName(System.String)) for a node whose name is resourceName. For example the OIV.Inventor.Draggers.SoCenterballDragger lists a resource named "centerballRotator", therefore the scene graph for this dragger contains an OIV.Inventor.Nodes.SoSeparator named "centerballRotator". By putting a new entry in the dictionary (creating a node with this name), you can override the default geometry. However note two things: First, Open Inventor allows multiple nodes to have the same name and in this case OIV.Inventor.Nodes.SoNode.GetByName(System.String) returns the most recently named node. Second, when the first instance of a dragger class is created, the constructor automatically creates the default dragger geometry (either from the compiled-in scene graph or from the geometry file in SO_DRAGGER_DIR). Therefore to override default geometry using named nodes, the application must first create an instance of the dragger class, then create and name the replacement geometry. Subsequently created draggers will now use the replacement geometry.

Proxy geometry:

The OIV.Inventor.Nodekits.SoInteractionKit method OIV.Inventor.Nodekits.SoInteractionKit.SetPartAsPath(System.String, OIV.Inventor.SoPath) provides support for creating "stand-in" objects for parts in the interaction kit. The "stand-in", or "surrogate" part, is a path to an object that lies somewhere else in the scene graph. This could be used, for example, with an OIV.Inventor.Draggers.SoTranslate1Dragger to allow the user to click on some geometry and directly drag it (without displaying any separate dragger geometry). This technique is used, for example, in OIV.VolumeViz.Draggers.SoOrthoSliceDragger.

WYSIWYG Draggers:

Some of the default Open Inventor draggers have behaviors based on invisible geometry. For example, dragging a sphere by clicking on the surface of an invisible sphere. These behaviors may be unintuitive for some users. So Open Inventor also provides an alternative set of "WYSIWYG" draggers with semi-transparent handles in place of invisible geometry. For example, the OIV.Inventor.Draggers.SoCenterballDragger shown below.

To quickly enable these draggers set the environment variable SO_DRAGGER_DIR to "$OIVHOME/data/draggerWysiwyg" (for example using OIV.Inventor.SoPreferences). Applications that plan to use these draggers should make a local copy of this directory and set SO_DRAGGER_DIR to the local directory. This directory should be distributed with the application. For example:

Default OIV.Inventor.Draggers.SoCenterballDraggerWYSIWYG OIV.Inventor.Draggers.SoCenterballDragger

Event handling

When a dragger activates as a result of a mouse button press, it will handle the button down event (OIV.Inventor.Events.SoMouseButtonEvent) and subsequent mouse move events (OIV.Inventor.Events.SoLocation2Event). Other nodes in the scene graph will not see these events. Even nodes traversed before the dragger node will not see the mouse move events, because the dragger calls setGrabber() on the OIV.Inventor.Actions.SoHandleEventAction.

However, when the dragger de-activates as a result of releasing the mouse button, other nodes will see this event (OIV.Inventor.Events.SoMouseButtonEvent), because the dragger does not call setHandled(). This potentially includes nodes above the dragger, such as OIV.Inventor.Nodes.SoSelection, which defer event handling until after traversing their children. This is not a problem for the standard OIV.Inventor.Nodes.SoSelection node because it ignores the button up event if it did not previously see the matching button down event. However custom node classes that process events should be aware of this behavior.

EXAMPLE

Create a simple dragger and add a valueChanged delegatethat will be called when the dragger has changed one of its fields.

SoTranslate1Dragger dragger = new SoTranslate1Dragger();
dragger.ValueChanged += new SoDragger.DraggerCallback( draggerCB );
root.AddChild(dragger);
Or... Connect a simple dragger directly to a transform node.
SoTranslation trans = new SoTranslation();
trans.translation.ConnectFrom( dragger.translation );
root.AddChild(trans);

EXAMPLE

Implementation of a simple valueChanged callback that limits the range of the dragger. Note: To avoid recursive calls, always disable the valueChanged callback before modifying the fields of the dragger.

const float X_MIN = -2;
const float X_MAX =  2;

public void draggerCB( SoDragger dragger )
{
   // Get dragger and current position
   SoTranslate1Dragger tdragger = (SoTranslate1Dragger)dragger;
   SbVec3f pos = tdragger.translation.Value;

   // Constrain dragger range
   if (pos[0] < X_MIN)
   {
       tdragger.EnableValueChangedEvent( false );
       tdragger.translation.SetValue( X_MIN, 0, 0 );
       tdragger.EnableValueChangedEvent( true );
   }
   else if (pos[0] > X_MAX)
   {
       tdragger.EnableValueChangedEvent( false );
       tdragger.translation.SetValue( X_MAX, 0, 0 );
       tdragger.EnableValueChangedEvent( true );
   }
   // Update object controlled by dragger (if appropriate)
   // . . .
}

FILE FORMAT/DEFAULT

Dragger {
boundingBoxCaching AUTO
renderCulling AUTO
pickCulling AUTO
isActive false
callbackList NULL
}

CATALOG PARTS

All Parts
Part NamePart TypeDefault TypeNULL Default
callbackList NodeKitListPart yes

Extra Information for List Parts from Above Table
Part NameContainer TypePossible Types
callbackList Separator Callback, EventCallback

See Also
Inheritance Hierarchy
SystemObject
  OIV.InventorSoNetBase
    OIV.InventorSoDisposable
      OIV.Inventor.MiscSoBase
        OIV.Inventor.FieldsSoFieldContainer
          OIV.Inventor.NodesSoNode
            OIV.Inventor.NodekitsSoBaseKit
              OIV.Inventor.NodekitsSoInteractionKit
                OIV.Inventor.DraggersSoDragger
                  OIV.Inventor.DraggersSoCenterballDragger
                  OIV.Inventor.DraggersSoDirectionalLightDragger
                  OIV.Inventor.DraggersSoDragPointDragger
                  OIV.Inventor.DraggersSoHandleBoxDragger
                  OIV.Inventor.DraggersSoJackDragger
                  OIV.Inventor.DraggersSoPointLightDragger
                  OIV.Inventor.DraggersSoRotateCylindricalDragger
                  OIV.Inventor.DraggersSoRotateDiscDragger
                  OIV.Inventor.DraggersSoRotateSphericalDragger
                  OIV.Inventor.DraggersSoScale1Dragger
                  OIV.Inventor.DraggersSoScale2Dragger
                  OIV.Inventor.DraggersSoScale2UniformDragger
                  OIV.Inventor.DraggersSoScaleUniformDragger
                  OIV.Inventor.DraggersSoSpotLightDragger
                  OIV.Inventor.DraggersSoTabBoxDragger
                  OIV.Inventor.DraggersSoTabPlaneDragger
                  OIV.Inventor.DraggersSoTrackballDragger
                  OIV.Inventor.DraggersSoTransformBoxDragger
                  OIV.Inventor.DraggersSoTransformerDragger
                  OIV.Inventor.DraggersSoTranslate1Dragger
                  OIV.Inventor.DraggersSoTranslate2Dragger