Class Plane

平面

ax+by+cz+d=0

Hierarchy

Plane

Constructors

constructor

new Plane(a?: number, b?: number, c?: number, d?: number): Plane
创建一个平面
Parameters
- a: number = 0
  
  A系数
- b: number = 1
  
  B系数
- c: number = 0
  
  C系数
- d: number = 0
  
  D系数
Returns Plane
- Defined in src/math/geom/Plane.ts:55

Properties

a

a: number

平面A系数

同样也是面法线x尺寸

b

b: number

平面B系数

同样也是面法线y尺寸

c

c: number

平面C系数

同样也是面法线z尺寸

d

d: number

平面D系数

同样也是原点到平面的距离

Methods

classifyPoint

classifyPoint(p: Vector3, precision?: number): PlaneClassification
顶点分类

把顶点分为后面、前面、相交三类

Returns
顶点类型 PlaneClassification.BACK,PlaneClassification.FRONT,PlaneClassification.INTERSECT
Parameters
- p: Vector3
  
  顶点
- precision: number = mathUtil.PRECISION
Returns PlaneClassification
- Defined in src/math/geom/Plane.ts:180

clone

clone(): Plane
克隆

Returns Plane
- Defined in src/math/geom/Plane.ts:434

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/Plane.ts:350

copy

copy(plane: Plane): Plane
复制
Parameters
- plane: Plane
Returns Plane
- Defined in src/math/geom/Plane.ts:421

distanceWithPoint

distanceWithPoint(p: Vector3): number
计算点与平面的距离

Returns
距离
Parameters
- p: Vector3
  
  点
Returns number
- Defined in src/math/geom/Plane.ts:160

equals

equals(plane: Plane, precision?: number): boolean
与指定平面是否相等
Parameters
- plane: Plane
- precision: number = mathUtil.PRECISION
Returns boolean
- Defined in src/math/geom/Plane.ts:396

fromNormalAndPoint

fromNormalAndPoint(normal: Vector3, point: Vector3): Plane
根据法线与点定义平面
Parameters
- normal: Vector3
  
  平面法线
- point: Vector3
  
  平面上任意一点
Returns Plane
- Defined in src/math/geom/Plane.ts:144

fromPoints

fromPoints(p0: Vector3, p1: Vector3, p2: Vector3): Plane
通过3顶点定义一个平面
Parameters
- p0: Vector3
  
  点0
- p1: Vector3
  
  点1
- p2: Vector3
  
  点2
Returns Plane
- Defined in src/math/geom/Plane.ts:113

getNormal

getNormal(vOut?: Vector3): Vector3
法线
Parameters
- vOut: Vector3 = ...
Returns Vector3
- Defined in src/math/geom/Plane.ts:102

getOrigin

getOrigin(vOut?: Vector3): Vector3
原点在平面上的投影
Parameters
- vOut: Vector3 = ...
  
  输出点
Returns Vector3
- Defined in src/math/geom/Plane.ts:85

intersectWithLine3

intersectWithLine3(line: Line3): Vector3 | Line3
获取与直线交点

See
3D数学基础：图形与游戏开发 P269
Parameters
- line: Line3
Returns Vector3 | Line3
- Defined in src/math/geom/Plane.ts:225

intersectWithPlane3D

intersectWithPlane3D(plane3D: Plane): Line3
获取与平面相交直线
Parameters
- plane3D: Plane
Returns Line3
- Defined in src/math/geom/Plane.ts:249

intersectWithTwoPlane3D

intersectWithTwoPlane3D(plane0: Plane, plane1: Plane): Vector3
与其他两平面相交于一点

See
3D数学基础：图形与游戏开发 P271
Parameters
- plane0: Plane
- plane1: Plane
Returns Vector3
- Defined in src/math/geom/Plane.ts:363

negate

negate(): Plane
翻转平面

Returns Plane
- Defined in src/math/geom/Plane.ts:326

normalize

normalize(): Plane
标准化

Returns Plane
- Defined in src/math/geom/Plane.ts:297

onWithPoint

onWithPoint(p: Vector3, precision?: number): boolean
点是否在平面上
Parameters
- p: Vector3
  
  点
- precision: number = mathUtil.PRECISION
Returns boolean
- Defined in src/math/geom/Plane.ts:169

parallelWithLine3D

parallelWithLine3D(line3D: Line3, precision?: number): boolean
判定与直线是否平行
Parameters
- line3D: Line3
- precision: number = mathUtil.PRECISION
Returns boolean
- Defined in src/math/geom/Plane.ts:200

parallelWithPlane3D

parallelWithPlane3D(plane3D: Plane, precision?: number): boolean
判定与平面是否平行
Parameters
- plane3D: Plane
- precision: number = mathUtil.PRECISION
Returns boolean
- Defined in src/math/geom/Plane.ts:212

projectPoint

projectPoint(point: Vector3, vOut?: Vector3): Vector3
点到平面的投影
Parameters
- point: Vector3
- vOut: Vector3 = ...
Returns Vector3
- Defined in src/math/geom/Plane.ts:340

random

random(): Plane
随机平面

Returns Plane
- Defined in src/math/geom/Plane.ts:128

randomPoint

randomPoint(vOut?: Vector3): Vector3
平面上随机点
Parameters
- vOut: Vector3 = ...
  
  输出点
Returns Vector3
- Defined in src/math/geom/Plane.ts:94

set

set(a: number, b: number, c: number, d: number): Plane
设置
Parameters
- a: number
  
  A系数
- b: number
  
  B系数
- c: number
  
  C系数
- d: number
  
  D系数
Returns Plane
- Defined in src/math/geom/Plane.ts:71

toString

toString(): string
输出字符串

Returns string
- Defined in src/math/geom/Plane.ts:442

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