Ellipse | Math Library

表示二维空间的椭圆

Hierarchy

Ellipse

Index

Constructors

constructor

Properties

Methods

Constructors

constructor

new Ellipse(center: Vector2, rx: number, ry: number, rotate?: number): Ellipse
new Ellipse(): Ellipse

- Defined in unit/ellipse/index.ts:44
Parameters
- center: Vector2
- rx: number
- ry: number
- Optional rotate: number
Returns Ellipse
- Defined in unit/ellipse/index.ts:46
Returns Ellipse

Properties

center

center: Vector2 = ...

椭圆圆心

rotate

rotate: number = 0

椭圆的旋转（弧度）

默认：0

rx

rx: number = 0

椭圆横轴半径

ry

ry: number = 0

椭圆纵轴半径

Methods

clone

clone(): Ellipse

- Defined in unit/ellipse/index.ts:120
复制当前椭圆

Returns Ellipse

新的椭圆

copy

copy(ellipse: Ellipse): Ellipse

- Defined in unit/ellipse/index.ts:107
复制指定椭圆的数据到自身

Parameters
- ellipse: Ellipse
  
  目标椭圆
Returns Ellipse

当前 Ellipse

isPointInsideEllipse

isPointInsideEllipse(point: Vector2): boolean

- Defined in unit/ellipse/index.ts:132
判断点是否椭圆内

todo

如何增加误差;

todo

拆成两个接口 On | Inside ?

Parameters
- point: Vector2
  
  目标点
Returns boolean

setCenter

setCenter(center: Partial<IVec2>): Ellipse

- Defined in unit/ellipse/index.ts:65
设置椭圆圆心

Parameters
- center: Partial<IVec2>
  
  圆形
Returns Ellipse

当前 Ellipse

setRotate

setRotate(rotate: number): Ellipse

- Defined in unit/ellipse/index.ts:97
设置椭圆的旋转

Parameters
- rotate: number
  
  椭圆的旋转
Returns Ellipse

当前 Ellipse

setRx

setRx(rx: number): Ellipse

- Defined in unit/ellipse/index.ts:77
设置椭圆横轴半径

Parameters
- rx: number
  
  椭圆横轴半径
Returns Ellipse

当前 Ellipse

setRy

setRy(ry: number): Ellipse

- Defined in unit/ellipse/index.ts:87
设置椭圆纵轴半径

Parameters
- ry: number
  
  椭圆纵轴半径
Returns Ellipse

当前 Ellipse

Static createByFoci

createByFoci(f1: Vector2, f2: Vector2, distance: number): Ellipse

- Defined in unit/ellipse/index.ts:13
通过焦点和到焦点的距离来生成一个椭圆

Parameters
- f1: Vector2
  
  焦点1
- f2: Vector2
  
  焦点2
- distance: number
  
  到两个焦点的距离之和
Returns Ellipse

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