function faceRaw
universe/src/terrainKernel.ts:819
faceToDirection before the normalize, and — with delta — the same map
applied to a difference of face coordinates, where the fixed component is
zero rather than ±1.
- facenumber
- Undocumented
- unumber
- Undocumented
- vnumber
- Undocumented
- deltaboolean
- Undocumented
ReturnsVec3