ConstReadonlyBoth: "b"The tile is mirrored both vertically and horizontally.
ReadonlyHorizontal: "h"The tile is mirrored horizontally (flipped along the x-axis).
ReadonlyNone: "none"No mirroring is applied.
ReadonlyVertical: "v"The tile is mirrored vertically (flipped along the y-axis).
Specifies how a tile is mirrored or flipped when filling a shape or container.