Struct SpriteAtlas 

pub struct SpriteAtlas {
    pub image: Arc<ImageAsset>,
    pub sheet: SpriteSheet,
}

An immutable, uniformly sized atlas; unused cells are transparent.

Fields

image: Arc<ImageAsset>

Single GPU/CPU shared material.

sheet: SpriteSheet

Selects cells from custom[0].

Implementations

impl SpriteAtlas

pub fn new( images: &[Arc<ImageAsset>], max_bytes: u64, ) -> Result<Self, ValidationError>

Packs 1..=64 equally sized images under a conservative construction/mipmap budget.

pub fn new_padded( images: &[Arc<ImageAsset>], max_bytes: u64, ) -> Result<Self, ValidationError>

Packs 1..=64 images of any size: every cell is as large as the biggest image and smaller images are centred on transparent padding, so the uniform-cell sheet protocol (and CPU/GPU sampling) is unchanged. Sprites keep their relative pixel scale; a sprite drawn at size spans the whole cell.

pub fn random(self, seed: u64) -> Self

Selects sub-images by stable particle index and seed, so a particle keeps the same texture for its whole life.

pub fn style( &self, size: f64, align_to_velocity: bool, ) -> Result<ParticleStyle, ValidationError>

Builds a Sprites style that selects cells according to self.sheet.mode (Custom reads particle.custom[0]) and carries the sheet already.

Trait Implementations

impl Clone for SpriteAtlas

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.