Class Vector2

attention: 赋值操作优先使用set,不要直接赋值私有变量

Hierarchy

Vector2

Index

Constructors

constructor

Properties

_x
_y

Accessors

Methods

Constructors

constructor

new Vector2(x?: number, y?: number): Vector2

- Defined in glb/dist/math/Vector2.d.ts:19
Parameters
- Optional x: number
- Optional y: number
Returns Vector2

Properties

Protected _x

_x: number

Protected _y

_y: number

Accessors

isVector2

get isVector2(): boolean

- Defined in glb/dist/math/Vector2.d.ts:20
Returns boolean

x

get x(): number
set x(value: number): void

- Defined in glb/dist/math/Vector2.d.ts:8
Returns number
- Defined in glb/dist/math/Vector2.d.ts:9
Parameters
- value: number
Returns void

y

get y(): number
set y(value: number): void

- Defined in glb/dist/math/Vector2.d.ts:11
Returns number
- Defined in glb/dist/math/Vector2.d.ts:12
Parameters
- value: number
Returns void

Methods

add

add(a: Vector2, b?: Vector2): Vector2

- Defined in glb/dist/math/Vector2.d.ts:57
向量相加

Parameters
- a: Vector2
- Optional b: Vector2
  
  若b未传入，则计算this + a
Returns Vector2

addScalar

addScalar(s: number): Vector2

- Defined in glb/dist/math/Vector2.d.ts:62
标量加法

Parameters
- s: number
  
  标量
Returns Vector2

clone

clone(): Vector2

- Defined in glb/dist/math/Vector2.d.ts:45
克隆

Returns Vector2
返回一个与当前Vector2相等的Vector2

copy

copy(target: Vector2): Vector2

- Defined in glb/dist/math/Vector2.d.ts:40
复制

Parameters
- target: Vector2
  
  复制目标
Returns Vector2

cross

cross(b: Vector2): Vector3

- Defined in glb/dist/math/Vector2.d.ts:105
计算this和b的叉乘

Parameters
- b: Vector2
Returns Vector3

distanceTo

distanceTo(b: Vector2): number

- Defined in glb/dist/math/Vector2.d.ts:117
计算this到b的欧氏距离

Parameters
- b: Vector2
Returns number

divide

divide(a: Vector2, b: Vector2): Vector2

- Defined in glb/dist/math/Vector2.d.ts:90
向量除法

Parameters
- a: Vector2
- b: Vector2
  
  若b未传入，则计算this / a
Returns Vector2

divideScalar

divideScalar(s: number): Vector2

- Defined in glb/dist/math/Vector2.d.ts:95
标量除法

Parameters
- s: number
  
  标量
Returns Vector2

dot

dot(b: Vector2): number

- Defined in glb/dist/math/Vector2.d.ts:100
计算this和b的点积

Parameters
- b: Vector2
Returns number

isEqual

isEqual(target: Vector2): boolean

- Defined in glb/dist/math/Vector2.d.ts:51
判等

Parameters
- target: Vector2
  
  被比较的Vector2
Returns boolean
是否相等，相等返回true，否则返回false

length

length(): number

- Defined in glb/dist/math/Vector2.d.ts:109
欧氏长度

Returns number

mulMat3

mulMat3(m3: Matrix3): Vector2

- Defined in glb/dist/math/Vector2.d.ts:125
左乘Mat3: Mat3 ✕ this，this自动扩充为（this.x, this.y, 1）

Parameters
- m3: Matrix3
Returns Vector2

multiply

multiply(a: Vector2, b: Vector2): Vector2

- Defined in glb/dist/math/Vector2.d.ts:79
向量乘法

Parameters
- a: Vector2
- b: Vector2
  
  若b未传入，则计算this * a
Returns Vector2

multiplyScalar

multiplyScalar(s: number): Vector2

- Defined in glb/dist/math/Vector2.d.ts:84
标量乘法

Parameters
- s: number
  
  标量
Returns Vector2

normalize

normalize(): Vector2

- Defined in glb/dist/math/Vector2.d.ts:121
归一化

Returns Vector2

set

set(x: number, y: number): Vector2

- Defined in glb/dist/math/Vector2.d.ts:18
更新赋值，只能赋值私有变量

Parameters
- x: number
  
  x值
- y: number
  
  y值
Returns Vector2

setFromArray

setFromArray(val: number[]): Vector2

- Defined in glb/dist/math/Vector2.d.ts:35
使用数组赋值

Parameters
- val: number[]
  
  数组
Returns Vector2

setX

setX(v: number): void

- Defined in glb/dist/math/Vector2.d.ts:25
设置x分量

Parameters
- v: number
  
  x新值
Returns void

setY

setY(v: number): void

- Defined in glb/dist/math/Vector2.d.ts:30
设置y分量

Parameters
- v: number
  
  y新值
Returns void

squaredLength

squaredLength(): number

- Defined in glb/dist/math/Vector2.d.ts:113
长度的平方

Returns number

sub

sub(a: Vector2, b?: Vector2): Vector2

- Defined in glb/dist/math/Vector2.d.ts:68
向量减法

Parameters
- a: Vector2
- Optional b: Vector2
  
  若b未传入，则计算this - a
Returns Vector2

subScalar

subScalar(s: number): Vector2

- Defined in glb/dist/math/Vector2.d.ts:73
标量减法

Parameters
- s: number
  
  标量
Returns Vector2

toArrays

toArrays(): number[]

- Defined in glb/dist/math/Vector2.d.ts:129
转为数组[this.x, this.y]

Returns number[]

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