Enum rlifesrc_lib::Symmetry

pub enum Symmetry {
    C1,
    C2,
    C4,
    D2Row,
    D2Col,
    D2Diag,
    D2Antidiag,
    D4Ortho,
    D4Diag,
    D8,
}

Symmetries of the pattern.

10 different values corresponds to 10 subgroups of the dihedral group D₈.

The notation is stolen from Oscar Cunningham's Logic Life Search.

Some of the symmetries are only valid when the world is square.

Variants

C1

C1.

No symmetry at all.

C2

C2.

Symmetry under 180° rotation.

C4

C4.

Symmetry under 90° rotation.

D2Row

D2-.

Symmetry under reflection across the middle row.

D2Col

D2|.

Symmetry under reflection across the middle column.

D2Diag

D2\.

Symmetry under reflection across the diagonal.

D2Antidiag

D2/.

Symmetry under reflection across the antidiagonal.

D4Ortho

D4+.

Symmetry under reflections across the middle row and the middle column.

D4Diag

D4X.

Symmetry under reflections across the diagonal and the antidiagonal.

D8

D8.

Symmetry under all 8 transformations.

Methods

impl Symmetry

pub fn square_world(self) -> bool

Whether the transformation requires the world to be square.

Returns true for C4, D2\, D2/, D4X and D8.

Trait Implementations

impl Clone for Symmetry

fn clone(&self) -> Symmetry

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Symmetry

impl Default for Symmetry

The default symmetry is the C1.

fn default() -> Self

Returns the "default value" for a type.

impl PartialEq<Symmetry> for Symmetry

fn eq(&self, other: &Symmetry) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Debug for Symmetry

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl FromStr for Symmetry

type Err = String

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl StructuralPartialEq for Symmetry