Hierarchies
When you are building scenes, you have learned that you can build dependency connections to link node attributes. When working with transform nodes or joint nodes, you can also build hierarchies, which create a different kind of relationship between your objects.
In a hierarchy, one transform node is parented to another. When Maya software works with these nodes, it looks first at the top node, or root node, then down the hierarchy. Therefore, motion from the upper nodes is transferred down into the lower nodes. In the diagram below, if the group1 node is rotated, then the two lower nodes will rotate with it. If the nurbsCone node is rotated, the upper nodes are not affected.
Object and joint hierarchy nodes
Joint hierarchies are ...
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