Yesterday, HTC Vive Senior Engineer James Xiong posted a Vive IK Demo on GitHub, which includes a reference source code and a Unity Demo. Too bad it was not for UE4 but methinks this can be easily transferred. The demo experience employs 3 Steam VR trackers mounted to each ankle and one to the participant’s waist. From this the lower body animation is more or less “guessed”. This has to be an approximation since without understand the pole vector constraints imposed by the knee, it’s really impossible to understand the direction the leg is pointed. However, certain basic cases can be considered and predicted with fairly decent accuracy.
iMyth was planning on inventing its own solution for this problem. However, having code to start from will definitely help!
