This simple version of RubikDodeca. Rotate 3 faces around 1 vertex.
If MouseDown outside of tetrahedron, then drag total object. If MouseDown on tetrahedron, then rotate 3 faces. Please drag traverse at least 2 faces, if you drag traverse only 1 faces, then no rotation will occur. It will rotate around nearest vertex.
There are 4 faces in tetrahedron. Then rotation choices is 3x3x3x3. In initial state, each neighboring faces has same color. Total neighboring combination is 6.Left up is its number.