Struct Atlas

pub struct Atlas {
    pub allocator: Allocator,
    pub allocated: IndexSet<usize, BuildHasherDefault<AHasher>>,
    pub migrating: bool,
}

Atlas Layer within an [AtlasSet]. This Keeps track of the Individual Texture Layer.

Fields

allocator: Allocator

Handles the space allocation of the layer.

allocated: IndexSet<usize, BuildHasherDefault<AHasher>>

Stores each Index the allocations exist at for this layer.

migrating: bool

use to avoid placing newly loaded images into if we are migrating images out of it.

Implementations

impl Atlas

pub fn new(size: u32) -> Self

Creates a new Atlas with Allocator texture size.

pub fn allocate(&mut self, width: u32, height: u32) -> Option<Allocation>

Allocates a Spot within the Texture for uploading too.

pub fn insert_index(&mut self, index: usize)

Inserts [Allocation] Aquired Index for Back Mapping.

pub fn clear(&mut self)

Clears the internal Allocator and Allocated stores.

pub fn deallocate(&mut self, index: usize, allocation: Allocation)

Deallocates a [Allocation] returning it to the Allocator for reuse.

pub fn deallocations(&self) -> usize

Returns how many alloctions have been removed since the creation of the layer. this gets reset when the layer is purged.

pub fn start_migration(&mut self)

Enables Migration of the Allocations inside the Texture.