In the following steps, you use the Outliner to view the hierarchy for the mechanical arm. The Outliner is a scene management editor that presents a graphical view of the scene hierarchy. It allows you to more easily create, understand, and manage the hierarchy of objects and nodes in your scene.
To view hierarchies using the Outliner
- Select the Show/Hide Outliner Button from the Tool Box.
The boxes represent the nodes for the various items in the scene. Some items in the scene have already been parented into a hierarchy. This is indicated by the Show More buttons to the left of pin_1, pin_2, pin_3, and ArmEnd. Selecting them will show the child objects that have been parented to them. Selecting the nodes in the Outliner also selects the item in the scene view.
To select an item using the Outliner
- In the Outliner, click each of the separate items in the hierarchy at the parent level to select them. At the same time, observe which objects become highlighted on the model in the perspective view.
Hierarchies combine the various objects into discrete components for the mechanical arm, that is, the base, lower arm, middle arm, upper arm, and so on. If you select and rotate any of the parent nodes in the hierarchies, none of the other arm components follow because they are not combined into one unified hierarchy.