Class: LayoutSystem

Arranges children of any LayoutComponent host. Runs after WidgetSystem so a Widget-anchored container is positioned before its children get packed inside it.

Sizing (resizeMode): None — arrange only; child UITransform width/height read as-is. Container — after measuring, the HOST UITransform is resized to fit the children's taken size (main axis for H/V, row-stack height for Grid). Children — children are resized to fill the host (cross axis for H/V, column cell for Grid) before arranging. With affectedByChildScale, a child's taken size is UITransform size × |transform scale|. Inactive children are skipped and consume no space. Grid is row-major.

Extends

• System

Constructors

Constructor

new LayoutSystem(): LayoutSystem;

Returns

LayoutSystem

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

---

GetOrder()

GetOrder(): SystemOrder;

Returns

SystemOrder

---

GetPhase()

GetPhase(): SystemPhase;

Returns

SystemPhase

Overrides

System.GetPhase

---

GetWrites()

GetWrites(): readonly string[];

Returns

readonly string[]

---

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

Inherited from

System.OnStart

---

OnStop()

OnStop(_scene): void;

Parameters

Parameter	Type
_scene	Scene

Returns

void

Inherited from

System.OnStop

---

OnUpdate()

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

Parameters

Parameter	Type
_scene	Scene
_dt	number

Returns

void | Promise<void>

Inherited from

System.OnUpdate