ボディ トラッキング

https://cdn-ak.f.st-hatena.com/images/fotolife/x/x67x6fx74x6f/20190612/20190612033410.png

https://cdn-ak.f.st-hatena.com/images/fotolife/x/x67x6fx74x6f/20190612/20190612024755.png

参考