Class Line3

3d直线

Hierarchy

Line3
- Ray3

Index

Constructors

Properties

direction origin

Methods

applyMatrix4x4 clone closestPointParameterWithPoint closestPointWithPoint copy distanceWithPoint equals fromPoints fromPosAndDir getPlane getPoint getPointWithZ intersectWithLine3D onWithPoint random

Constructors

constructor

new Line3(origin?: Vector3, direction?: Vector3): Line3
根据直线某点与方向创建直线
Parameters
- Optional origin: Vector3
  
  直线上某点
- Optional direction: Vector3
  
  直线的方向
Returns Line3
- Defined in src/math/geom/Line3.ts:25

Properties

direction

direction: Vector3

直线方向(已标准化)

origin

origin: Vector3

直线上某一点

Methods

applyMatrix4x4

applyMatrix4x4(mat: Matrix4x4): Line3
应用矩阵
Parameters
- mat: Matrix4x4
  
  矩阵
Returns Line3
- Defined in src/math/geom/Line3.ts:154

clone

clone(): Line3
克隆

Returns Line3
- Defined in src/math/geom/Line3.ts:197

closestPointParameterWithPoint

closestPointParameterWithPoint(point: Vector3): number
与指定点最近点的系数
Parameters
- point: Vector3
  
  点
Returns number
- Defined in src/math/geom/Line3.ts:98

closestPointWithPoint

closestPointWithPoint(point: Vector3, vOut?: Vector3): Vector3
与指定点最近的点
Parameters
- point: Vector3
  
  点
- vOut: Vector3 = ...
  
  输出点
Returns Vector3
- Defined in src/math/geom/Line3.ts:108

copy

copy(line: Line3): Line3
拷贝
Parameters
- line: Line3
  
  直线
Returns Line3
- Defined in src/math/geom/Line3.ts:186

distanceWithPoint

distanceWithPoint(point: Vector3): number
指定点到该直线距离
Parameters
- point: Vector3
  
  指定点
Returns number
- Defined in src/math/geom/Line3.ts:89

equals

equals(line: Line3, precision?: number): boolean
与指定向量比较是否相等

Returns
相等返回true，否则false
Parameters
- line: Line3
- precision: number = mathUtil.PRECISION
  
  允许误差
Returns boolean
- Defined in src/math/geom/Line3.ts:168

fromPoints

fromPoints(p0: Vector3, p1: Vector3): Line3
根据直线上两点初始化直线
Parameters
- p0: Vector3
  
  Vector3
- p1: Vector3
  
  Vector3
Returns Line3
- Defined in src/math/geom/Line3.ts:44

fromPosAndDir

fromPosAndDir(position: Vector3, direction: Vector3): Line3
根据直线某点与方向初始化直线
Parameters
- position: Vector3
  
  直线上某点
- direction: Vector3
  
  直线的方向
Returns Line3
- Defined in src/math/geom/Line3.ts:57

getPlane

getPlane(plane?: Plane): Plane
获取经过该直线的平面
Parameters
- Optional plane: Plane
Returns Plane
- Defined in src/math/geom/Plane.ts:13

getPoint

getPoint(length?: number, vOut?: Vector3): Vector3
获取直线上的一个点
Parameters
- length: number = 0
  
  与原点距离
- vOut: Vector3 = ...
Returns Vector3
- Defined in src/math/geom/Line3.ts:69

getPointWithZ

getPointWithZ(z: number, vOut?: Vector3): Vector3
获取指定z值的点

Returns
目标点
Parameters
- z: number
  
  z值
- vOut: Vector3 = ...
  
  目标点（输出）
Returns Vector3
- Defined in src/math/geom/Line3.ts:80

intersectWithLine3D

intersectWithLine3D(line3D: Line3): Vector3 | Line3
与直线相交
Parameters
- line3D: Line3
  
  直线
Returns Vector3 | Line3
- Defined in src/math/geom/Line3.ts:132

onWithPoint

onWithPoint(point: Vector3, precision?: number): boolean
判定点是否在直线上
Parameters
- point: Vector3
  
  点
- precision: number = mathUtil.PRECISION
  
  精度
Returns boolean
- Defined in src/math/geom/Line3.ts:120

random

random(): Line3
随机直线，比如用于单元测试

Returns Line3
- Defined in src/math/geom/Line3.ts:34

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