There are other techniques such as onion skinning and rotoscoping to aid in the animation process, but it still remains time intensive. If you have ever done a flipbook animation at the top corner of any of your textbooks, you already have the process of traditional 2D animation down.
Generally, the approach here is to generate a sprite sheet, which is a sequence of slightly altered versions of the same character, which played in sequence results in an animation. In the land of 2D art, the process is often quite different. It’s a pretty powerful way to perform animation and every single major 3D application implements IK (and FK – forward kinematics). IK is basically a fancy way of saying “move an end bone and the computer will calculate how all the other bones in the chain will respond” enabling you to animate by positioning the foot for example and the ankle, knee, and hip will rotate appropriately.
#Spine2d bone stretch series#
Animations are generally defined by moving a series of bones controlling your mesh, which in turn are powered by a system called inverse kinematics. One of the major advantages of working in 3D is once you have your character modeled and rigged, creating new animations is simply a matter of defining a series of poses on a timeline.
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