Polygon | Math Library

表示二维的一个多边形

Hierarchy

Polygon

Index

Constructors

constructor

Properties

points

Methods

Constructors

constructor

new Polygon(points?: Vector2[]): Polygon

- Defined in unit/polygon/index.ts:12
Parameters
- points: Vector2[] = []
  
  多边形的顶点数据（最后一个和第一个闭合）
Returns Polygon

Properties

points

points: Vector2[] = []

多边形的顶点数据（最后一个和第一个闭合）

Methods

addPoint

addPoint(point: Vector2 | Vector2[]): Polygon

- Defined in unit/polygon/index.ts:33
增加顶点

Parameters
- point: Vector2 | Vector2[]
  
  一个或者多个顶点数据
Returns Polygon

getCenter

getCenter(): Vector2

- Defined in unit/polygon/index.ts:53
获取多边形的中心点（所有坐标点的平均值）

Returns Vector2

getCentroid

getCentroid(): Vector2

- Defined in unit/polygon/index.ts:61
获取多边形的重心（几何中心）

Returns Vector2

getEdges

getEdges(): Line2[]

- Defined in unit/polygon/index.ts:42
获取多边形的边

Returns Line2[]

isPointInsidePolygon

isPointInsidePolygon(point: Vector2, includeEdge?: boolean, tolerance?: number): boolean

- Defined in unit/polygon/index.ts:86
判断目标点是否在多边形内

Parameters
- point: Vector2
  
  目标点
- includeEdge: boolean = true
  
  多边形范围是否包含边
- tolerance: number = ...
  
  误差
Returns boolean

isPointOnEdge

isPointOnEdge(point: Vector2, tolerance?: number): boolean

- Defined in unit/polygon/index.ts:129
判断目标点是否在多边形的边上

Parameters
- point: Vector2
  
  目标点
- tolerance: number = ...
  
  误差
Returns boolean

setPath

setPath(points: Vector2[]): void

- Defined in unit/polygon/index.ts:25
设置多边形的顶点

Parameters
- points: Vector2[]
  
  多边形的顶点数据（最后一个和第一个闭合）
Returns void

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