Press space to toggle variables, press R to reset without changing the variables. Try these settings: Lines 5, Length 10, Segments 20, Fixed? 1
Using the inversed kinematics engine I made lately: https://scratch.mit.edu/projects/395512281/ Based on some video's by The Coding Train: https://www.youtube.com/watch?v=hbgDqyy8bIw https://www.youtube.com/watch?v=RTc6i-7N3ms https://www.youtube.com/watch?v=10st01Z0jxc
