Enum Quantization 

pub enum Quantization {
    Bits(u8),
    MaxError(f32),
    Bounded {
        range: f32,
        max_error: f32,
    },
}

How the quantization resolution (number of bits) for an attribute is determined. All variants ultimately resolve to a bit count in 1..=30 (Draco’s cap) via Quantization::resolve.

Variants

Bits(u8)

Explicit number of quantization bits.

MaxError(f32)

Derive the bit count from a maximum tolerated quantization error, measured against the attribute’s observed value range (the largest per-axis extent scanned from the data).

Bounded

Derive the bit count from a maximum tolerated error against a caller-supplied domain, making the resolution independent of any single mesh’s extent. range is the largest per-axis span of the bounding box (see Quantization::from_bounding_box).

Fields

range: f32

max_error: f32

Implementations

impl Quantization

pub fn from_bounding_box(min: &[f32], max: &[f32], max_error: f32) -> Self

Builds a Quantization::Bounded from an explicit axis-aligned bounding box; the largest per-axis span sets the resolution.

pub fn resolve(self, observed_range: f32) -> u8

Resolves this spec to a concrete number of quantization bits, clamped to 1..=30. observed_range is the largest per-axis extent of the data, used only by Quantization::MaxError; other variants ignore it.

Trait Implementations

impl Clone for Quantization

fn clone(&self) -> Quantization

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Quantization

impl Debug for Quantization

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

Formats the value using the given formatter.

impl Default for Quantization

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Quantization

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Quantization