Class ObservablePoint2D

可观察二维点类

继承自 Point2D 的功能，增加了属性变更通知机制。当点的坐标发生变化时，会自动触发回调函数。主要用于实体属性的响应式更新。

Example

const point = new ObservablePoint2D(0, 0, () => {
  console.log('点坐标已更新');
});
point.x = 100; // 触发回调

Index

Constructors

constructor

new ObservablePoint2D(
    x?: number,
    y?: number,
    onUpdate?: () => void,
    z?: number,
): ObservablePoint2D
构造函数
Parameters
- x: number = 0
  初始X坐标
- y: number = 0
  初始Y坐标
- onUpdate: () => void = null
  坐标变更时的回调函数
- Optionalz: number
  初始Z坐标（可选）
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:302

Accessors

x

get x(): number
Returns number
- Defined in geometry/Point2D.ts:313
set x(val: number): void
Parameters
- val: number
Returns void
- Defined in geometry/Point2D.ts:317

y

get y(): number
Returns number
- Defined in geometry/Point2D.ts:325
set y(val: number): void
Parameters
- val: number
Returns void
- Defined in geometry/Point2D.ts:329

z

get z(): number
Returns number
- Defined in geometry/Point2D.ts:336
set z(val: number): void
Parameters
- val: number
Returns void
- Defined in geometry/Point2D.ts:340

Methods

set

set(x: number, y: number, z?: number): ObservablePoint2D
同时设置X、Y和Z，只触发一次更新
Parameters
- x: number
- y: number
- Optionalz: number
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:364

copyFrom

copyFrom(p: { x: number; y: number; z?: number }): ObservablePoint2D
从另一个点(Point2D 或 ObservablePoint2D) 复制数据用于 entity.startPoint = otherPoint 的场景
Parameters
- p: { x: number; y: number; z?: number }
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:383

`Static`Origin

Origin(): ObservablePoint2D
静态构建方法 (保持API一致)

Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:394

clone

clone(): ObservablePoint2D
克隆策略：通常克隆是为了计算，不需要监听，所以返回轻量级的普通 Point2D 如果你需要返回 ObservablePoint2D，可以修改这里

Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:403

toDb

toDb(): [number, number] | [number, number, number]
Returns [number, number] | [number, number, number]
- Defined in geometry/Point2D.ts:407

fromDb

fromDb(dbData: any): ObservablePoint2D
Parameters
- dbData: any
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:414

offset

offset(offsetVector: { x: number; y: number }): ObservablePoint2D
Parameters
- offsetVector: { x: number; y: number }
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:435

move

move(
fromPosition: { x: number; y: number },
toPosition: { x: number; y: number },
): ObservablePoint2D
Parameters
- fromPosition: { x: number; y: number }
- toPosition: { x: number; y: number }
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:446

offsetMinus

offsetMinus(offsetVector: { x: number; y: number }): ObservablePoint2D
Parameters
- offsetVector: { x: number; y: number }
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:456

rotate

rotate(rotationAngle: number, centerPoint?: Point2D): ObservablePoint2D
旋转点直接复用外部提供的 rotatePointAroundCenter 函数
Parameters
- rotationAngle: number
- centerPoint: Point2D = ...
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:470

scale

scale(scaleFactor: number, centerPoint?: Point2D): ObservablePoint2D
缩放点直接复用外部提供的 scalePointAlongVector 函数
Parameters
- scaleFactor: number
- centerPoint: Point2D = ...
Returns ObservablePoint2D
- Defined in geometry/Point2D.ts:483

Class ObservablePoint2D

Example

Index

Constructors

Accessors

Methods

Constructors

constructor

Parameters

Returns ObservablePoint2D

Accessors

x

Returns number

Parameters

Returns void

y

Returns number

Parameters

Returns void

z

Returns number

Parameters

Returns void

Methods

set

Parameters

Returns ObservablePoint2D

copyFrom

Parameters

Returns ObservablePoint2D

StaticOrigin

Returns ObservablePoint2D

clone

Returns ObservablePoint2D

toDb

Returns [number, number] | [number, number, number]

fromDb

Parameters

Returns ObservablePoint2D

offset

Parameters

Returns ObservablePoint2D

move

Parameters

Returns ObservablePoint2D

offsetMinus

Parameters

Returns ObservablePoint2D

rotate

Parameters

Returns ObservablePoint2D

scale

Parameters

Returns ObservablePoint2D

Settings

On This Page

`Static`Origin