Class: TransformSystem

Composes local → world top-down each PreRender. Three cases per entity: worldOverride → reverse-compose local from parentWorld⁻¹ * world (user wrote to world). local.dirty or parent changed → recompose world = parentWorld * local. otherwise → skip recomposition but still recurse for child dirty checks.

Composition is plain parentWorld * local with no anchor offset; the pivot is applied at render time by NodeTransformSystem via PivotOffsetComponent. 3D fields propagate additively and are ignored by 2D backends.

Sparse sets are cached at OnStart so the inner loop bypasses ComponentRegistry.GetTypeId / TryGetComponent — direct SparseSet.Has + Get only. Matters at high entity counts.

Extends

• System

Constructors

Constructor

new TransformSystem(): TransformSystem;

Returns

TransformSystem

Inherited from

System.constructor

Properties

Property	Modifier	Type	Default value	Inherited from
enabled	public	boolean	true	System.enabled
parallel	public	boolean	false	System.parallel

Methods

GetName()

GetName(): string;

Returns

string

Overrides

System.GetName

---

GetPhase()

GetPhase(): SystemPhase;

Returns

SystemPhase

Overrides

System.GetPhase

---

OnClose()

OnClose(): void;

Returns

void

Inherited from

System.OnClose

---

OnInit()

OnInit(_engine): void;

Parameters

Parameter	Type
_engine	IEngine

Returns

void

Inherited from

System.OnInit

---

OnRender()

OnRender(scene, _renderer): void;

Parameters

Parameter	Type
scene	Scene
_renderer	IRenderer

Returns

void

Overrides

System.OnRender

---

OnRendererChanged()

OnRendererChanged(_renderer): void;

Parameters

Parameter	Type
_renderer	IRenderer

Returns

void

Inherited from

System.OnRendererChanged

---

OnStart()

OnStart(scene, _renderer): void;

Parameters

Parameter	Type
scene	Scene
_renderer	IRenderer

Returns

void

Overrides

System.OnStart

---

OnStop()

OnStop(_scene): void;

Parameters

Parameter	Type
_scene	Scene

Returns

void

Overrides

System.OnStop

---

OnUpdate()

OnUpdate(_scene, _dt): void | Promise<void>;

Parameters

Parameter	Type
_scene	Scene
_dt	number

Returns

void | Promise<void>

Inherited from

System.OnUpdate