// NewTKey returns an imagetile-specific key component based on the components of a tile request.
func NewTKey(tile dvid.ChunkPoint3d, plane dvid.DataShape, scale Scaling) storage.TKey {
buf := bytes.NewBuffer(plane.Bytes())
buf.WriteByte(byte(scale))
buf.WriteByte(byte(3))
idx := dvid.IndexZYX(tile)
buf.Write(idx.Bytes())
return buf.Bytes()
}
