二次元空間化
https://gyazo.com/700c8c12d2b3c9a602d79a2e44161686https://gyazo.com/0777f7ccb1ea0355a66ea36cff6c457a
https://gyazo.com/a2cca6c9577834510a2ab8afb51d5b03https://gyazo.com/a605a08df4fffe6b46c505047a3d9b59
https://gyazo.com/6e032b892bcc1942f58a6e1dc6dab1f1https://gyazo.com/ba1aaa83e9383a3e14e42c0e11d3ea65
https://gyazo.com/31f03eb54bcf36644aff5940ee01dd0c