Struct ChunkType 

pub struct ChunkType(pub [u8; 4]);

A four-byte chunk type tag.

Tuple Fields

0: [u8; 4]

Implementations

impl ChunkType

pub const HEAD: ChunkType

HEAD - display dimensions, layer count, encoder identity.

pub const META: ChunkType

META - print parameters as JSON.

pub const PROF: ChunkType

PROF - reusable named print profile.

pub const AUTH: ChunkType

AUTH - encryption metadata.

pub const LROV: ChunkType

LROV - one (layer, sector)’s timing overrides.

pub const PREV: ChunkType

PREV - PNG preview image.

pub const LTBL: ChunkType

LTBL - layer table, mapping (layer, sector) pairs to chunks.

pub const ZDIC: ChunkType

ZDIC - zstd dictionary shared by the LAYR frames.

pub const LAYR: ChunkType

LAYR - one sector’s mask data for one layer group, as a zstd frame.

pub const LHAS: ChunkType

LHAS - per-layer hashes and Merkle root.

pub const VOXL: ChunkType

VOXL - embedded scene, opaque to LUMEN.

pub const EXTD: ChunkType

EXTD - vendor or future-standard extension.

pub const ALL: [ChunkType; 12]

Every chunk type this specification defines.

pub fn as_bytes(&self) -> &[u8; 4]

The raw tag bytes.

pub fn is_known(&self) -> bool

Whether this is a chunk type v1 defines.

pub fn is_compressed(&self) -> bool

Whether the payload carries a zstd frame, per the normative table in [spec/12-compression.md] section 6.3.

LAYR is excluded, and not because it is uncompressed: its payload is a version field plus a frame the container does not itself decompress, in the same way EXTD’s compression is per-extension and PREV’s is none. EXTD is excluded too: the frame is opaque to this crate, so the caller decides.

pub fn tag(&self) -> String

The tag as a display string, with HEAD rendered as HEAD.

Trait Implementations

impl Clone for ChunkType

fn clone(&self) -> ChunkType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ChunkType

impl Debug for ChunkType

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

Formats the value using the given formatter.

impl Display for ChunkType

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

Formats the value using the given formatter.

impl Eq for ChunkType

impl Hash for ChunkType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ChunkType

fn cmp(&self, other: &ChunkType) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ChunkType

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for ChunkType

fn partial_cmp(&self, other: &ChunkType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for ChunkType