Struct Spd 

#[repr(C)]
pub struct Spd {
    pub samples: [f32; 41],
}

Spectral Power Distribution: radiant power at 41 wavelength samples (380–780 nm, 10 nm steps). POD, zero-heap, stack-allocated.

Manual Pod/Zeroable: bytemuck only auto-implements [f32; N] for N ≤ 32.

Fields

samples: [f32; 41]

Power values at 380, 390, …, 780 nm.

Implementations

impl Spd

pub fn from_samples(samples: [f32; 41]) -> Self

Create an SPD from a raw sample array.

pub fn flat(value: f32) -> Self

Create a flat (equal-energy) SPD with all samples set to value.

pub fn delta(lambda_nm: f32) -> Self

Create a single-wavelength delta SPD: all power at the sample closest to lambda_nm, zero elsewhere.

pub fn gaussian_peak(lambda_nm: f32, width_nm: f32, amplitude: f32) -> Self

Create a Gaussian-peaked SPD centred at lambda_nm with width width_nm, scaled by amplitude.

pub fn scale(&self, s: f32) -> Self

Scale all samples by a scalar.

pub fn add(&self, other: &Self) -> Self

Element-wise addition.

pub fn lerp(&self, other: &Self, t: f32) -> Self

Linear interpolation: self * (1-t) + other * t.

pub fn total_power(&self) -> f32

Total power (sum of all samples).

Trait Implementations

impl Clone for Spd

fn clone(&self) -> Spd

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Spd

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

Formats the value using the given formatter.

impl Default for Spd

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Spd

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Zeroable for Spd

fn zeroed() -> Self

Calls zeroed.

impl Copy for Spd

impl Pod for Spd

impl StructuralPartialEq for Spd