Summary
Identifies a direction within a 2D hexagonal grid.
Enum values
| 4 | Down (dq = 0, dr = 1). |
| 5 | Down and left (dq = -1, dr = 1). |
| 3 | Down and right (dq = 1, dr = 0). |
| 1 | Up (dq = 0, dr = -1). |
| 0 | Up and left (dq = -1, dr = 0). |
| 2 | Up and right (dq = 1, dr = -1). |