Whether it's metal gear, Prince of Persia or World of Warcraft, skeletal animation technology is used everywhere. It shapes all kinds of lifelike creatures. Among them, human skeleton animation is the most widely used.
Essentially, all 3D character animation systems are based on a logic, which is to change in a certain way.
The positions of mesh vertices just change in different ways. The same is true of skeletal animation.
The basic principle of bone animation is to control each bone and joint first, and then use it to match the skin mesh.
In skeletal skin animation, a character consists of a single mesh model, such as skin and bones organized according to a specific level. The skeleton hierarchy describes the structure of the character, just like the different parts in the joint animation, the skeleton in the skeleton skin animation forms a hierarchy according to the characteristics of the character. Adjacent bones are connected by joints and can move relative to each other.