@orillusion/core

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Class: TextureAtlas

Defined in: src/assets/TextureAtlas.ts:16

Texture atlas — a base texture plus a dictionary of named Sprite assets. Returned by Engine3D.resFor(ctx).loadAtlas(url).

Each region parsed from the atlas JSON becomes a Sprite that shares the atlas's texture and carries its own UV region / pivot. Pair with SpriteRenderer.sprite = atlas.get('name') to render.

Constructors

Constructor

new TextureAtlas(texture): TextureAtlas

Defined in: src/assets/TextureAtlas.ts:24

Parameters

texture

Texture

Returns

TextureAtlas

Properties

texture

texture: Texture

Defined in: src/assets/TextureAtlas.ts:18

The shared base texture that all sprites in this atlas reference.

---

sprites

readonly sprites: Map<string, Sprite>

Defined in: src/assets/TextureAtlas.ts:20

Named sprites parsed from the atlas, keyed by region id.

---

name

name: string = ''

Defined in: src/assets/TextureAtlas.ts:22

Optional atlas name.

Methods

get()

get(id): Sprite

Defined in: src/assets/TextureAtlas.ts:30

Look up a named sprite. Returns undefined if the atlas has no such region.

Parameters

id

string

Returns

Sprite

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add()

add(id, region): Sprite

Defined in: src/assets/TextureAtlas.ts:35

Register a sprite. region is normalized UV.

Parameters

id

string

region

Vector4

Returns

Sprite

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addPixelRect()

addPixelRect(id, pixelRect, atlasWidth, atlasHeight): Sprite

Defined in: src/assets/TextureAtlas.ts:46

Register a sprite from a pixel-space rect in the source texture.

Parameters

id

string

pixelRect

x

number

y

number

w

number

h

number

atlasWidth

number

atlasHeight

number

Returns

Sprite