The Visionary Object Hierarchy
Visionary worlds consist of objects and their properties and behavior. When you create a Visionary world in Visionary Studio, the objects contained in the world belong to a hierarchy of parent and child objects. They are displayed in hierarchical format in the Scenes panel of the World Manager.
For example, a scene is a parent object for each level of detail it contains. A scene is also a child object of a world.
The fundamental hierarchy of any Visionary world consists of the building blocks-scenes, layouts, data elements, and data sources-plus the levels of detail for scenes and data elements, as shown in Figure 7-1.
When you view your world in the Scenes panel, you can see this fundamental hierarchy plus individual layouts, graphic objects, and navigation features, such as wormholes. See Figure 7-2.
In addition to the fundamental hierarchy, each world has a Global Parameters folder that contains the parameters available for designing the world. Each scene has a Local Parameters folder that contains the scene parameters available for designing the scene and a Viewpoints folder that contains the named viewpoints for the scene.
Figure 7-3 shows the defaults provided in the Global Parameters and Viewpoints folders. There are no default scene parameters provided in the Local Parameters folder.
Figure 7-4 shows an example of a world that contains one scene, one level of detail in the scene, one layout in the level of detail, one data element in the layout, and one level of detail in the data element.
In the Scenes panel, levels of detail for scenes and data elements appear in abbreviated form as LOD objects.
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