EDN: ESRI Developer Network
A container for recording data and events that occur in a scene.
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 | Description |
|---|---|
| IActiveViewEvents (esriCarto) | Provides access to events that occur when the state of the active view changes. |
| IConnectionPointContainer | Supports connection points for connectable objects. |
| 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. |
| ISupportErrorInfo | Indicates whether a specific interface can return Automation error objects. |
| IViewers3D | Provides access to members that control 3D displays. |
| 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. |
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.
'A common way to get the handle of the SceneGraph from with ArcScene's VBA IDE:
dim pDoc as ISxDocument: set pDoc = ThisDocument
dim pScene as IScene: set pScene = pDoc.Scene
dim pSG as ISceneGraph: set pSG = pScene.SceneGraph
'Further actions...
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
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