ArcObjects Library Reference (3DAnalyst)

SceneGraph CoClass

A container for recording data and events that occur in a scene.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server. Requires 3D Analyst Extension.

Supported Platforms

Windows, Solaris, Linux

Extended Error Information

Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.

Interfaces

Interfaces	Description
IActiveViewEvents (esriCarto)	Provides access to events that occur when the state of the active view changes.
IConnectionPointContainer	Supports connection points for connectable objects.
IDisplay (esriDisplay)	Provides access to members that control the Display.
IDisplay3D (esriDisplay)	Provides access to members that control drawing methods specific to 3D displays.
ISceneGraph	Provides access to members that control and manipulate the scene graph.
ISceneRendererEvents	Provides access to events that occur when a scene is rendered.
IScreenDisplay (esriDisplay)	Provides access to members that control Screen Display.
IScreenDisplay2 (esriDisplay)	Provides access to additional members that control the Screen Display.
ISupportErrorInfo	Indicates whether a specific interface can return Automation error objects.
ITimeDisplay (esriDisplay)	Provides access to members that control the Time Extent.
ITimeDisplay2 (esriDisplay)	Provides access to members that control the Time Extent.
IViewers3D	Provides access to members that control 3D displays.

Event Interfaces

Interfaces	Description
ISceneGraphEventsDisp (default)	Provides access to events that occur when state of scene graph changes.
ISceneGraphEvents	Provides access to events that occur when the state of the scene graph changes.
ITimeDisplayEvents	Provides access to members that control Display Time Events.
ISceneGraphLayerEvents	Provides access to events that occur when the state of the scene graph layer changes.
ISceneGraphLayerEventsDisp	Provides access to events that occur when state of scene graph layer changes.

Remarks

SceneGraph is to Scene what MapDisplay is to Map. It's associated with a Scene object, either in ArcScene or in a scene viewer control (or a later version scene control). It handles most of the 3D rendering operations and makes the drawing more efficient.

Working with Events

[Visual Basic 6.0]

When working with SceneGraph's default outbound interface in Visual Basic 6 declare variables as follows:

Private WithEvents pSceneGraph as SceneGraph

When implementing ISceneGraphEvents declare variables as follows:

Private WithEvents pSceneGraphEvents as SceneGraphEvents

When implementing ITimeDisplayEvents declare variables as follows:

Private WithEvents pTimeDisplayEvents as TimeDisplayEvents

When implementing ISceneGraphLayerEvents declare variables as follows:

Private WithEvents pSceneGraphLayerEvents as SceneGraphLayerEvents

When implementing ISceneGraphLayerEventsDisp declare variables as follows:

Private WithEvents pAnimationTrack as AnimationTrack