Introduction

Platonic solids are polyhedron which satisfy 3 conditions

1. all its faces are congruent convex regular polygons,
2. none of its faces intersect except at their edges, and
3. the same number of faces meet at each of its vertices

Hexahedron

The most commonly recognised platonic solid, also known as a cube. 

This is another test of animation in VRMath2. The construction of the man utilises basic 3D primitives including sphere, cone, sylinder, and cube. It is basically a trial and error approach to scale and apply material settings onto those 3D primitive objects. 

Animation is then applied to the arms and legs by careful considerations about their positions and orientations of movements.

魔比斯环也称麦比乌斯圈。麦比乌斯圈(Möbius strip, Möbius band)是一种单侧、不可定向的曲面。因A.F.麦比乌斯(August Ferdinand Möbius, 1790-1868)发现而得名。将一个长方形纸条ABCD的一端AB固定，另一端DC扭转半周后，把AB和CD粘合在一起 ，得到的曲面就是麦比乌斯圈，也称麦比乌斯带。