Parent/child hierarchies in 3D software
Before we start creating the skeleton itself, I just want to take a moment to explain the parent and child concepts, also called the hierarchy in 3D programs.
Parent/child hierarchies in 3D software are explained with the simple concept that a child always follows the parent as they walk around when the parent is holding the hand of the child.
However, if the child pulls away, the parent doesn't follow the child. Now, imagine a family: the parent and four children, Child A, Child B, Child C, and Child D. They are connected in the following way, as shown in Figure 11.9:
- If we now select the parent, all the children will move with the parent since it is at the top of the hierarchy, as shown in Figure 11.9.
- In the same way that Child A and Child B are the children of the parent, Child B is the parent of Child C and Child D. If we only select and move Child B, then Child C and Child D would follow and the rest would stay where...