FABRIK
A p5.js implementation of the FABRIK algorithm. FABRIK is a fast, iterative solver for the inverse kinematics problem.
Inverse Kinematics is a method for computing the posture via estimating each individual degree of freedom in order to satisfy a given task that meets user constraints; it plays an important role in the computer animation and simulation of articulated figures.
Original Paper by Andreas Aristidou, Joan Lasenby
Here it is with random link lengths and 3, 5, 8, and 12 joints.
