Class Box

多边形的特殊情况。在进行SAT碰撞检查时，我们只需要检查2个轴而不是8个轴

Hierarchy

Polygon
- Box

Index

Constructors

constructor

Properties

Accessors

edgeNormals

Methods

Constructors

constructor

new Box(width: number, height: number): Box

Overrides Polygon.constructor
- Defined in src/Physics/Shapes/Box.ts:8
Parameters
- width: number
- height: number
Returns Box

Properties

_areEdgeNormalsDirty

_areEdgeNormalsDirty: boolean = true

_edgeNormals

_edgeNormals: Vector2[]

_originalPoints

_originalPoints: Vector2[]

多边形的原始数据

_polygonCenter

_polygonCenter: Vector2

bounds

bounds: Rectangle

缓存的形状边界内部字段

center

center: Vector2

这不是中心。这个值不一定是物体的中心。对撞机更准确。应用任何转换旋转的localOffset 内部字段

height

height: number

isBox

isBox: boolean

用于优化未旋转box碰撞

isUnrotated

isUnrotated: boolean = true

points

points: Vector2[]

组成多边形的点保持顺时针与凸边形

position

position: Vector2

有一个单独的位置字段可以让我们改变形状的位置来进行碰撞检查，而不是改变entity.position。触发碰撞器/边界/散列更新的位置。内部字段

width

width: number

Accessors

edgeNormals

get edgeNormals(): Vector2[]

Inherited from Polygon.edgeNormals
- Defined in src/Physics/Shapes/Polygon.ts:43
边缘法线用于SAT碰撞检测。缓存它们用于避免squareRoots box只有两个边缘因为其他两边是平行的

Returns Vector2[]

Methods

buildEdgeNormals

buildEdgeNormals(): void

Inherited from Polygon.buildEdgeNormals
- Defined in src/Physics/Shapes/Polygon.ts:76
建立多边形边缘法线它们仅由edgeNormals getter惰性创建和更新

Returns void

collidesWithLine

collidesWithLine(start: Vector2, end: Vector2, hit: RaycastHit): boolean

Inherited from Polygon.collidesWithLine

Overrides Shape.collidesWithLine
- Defined in src/Physics/Shapes/Polygon.ts:296
Parameters
- start: Vector2
- end: Vector2
- hit: RaycastHit
Returns boolean

collidesWithShape

collidesWithShape(other: Shape, result: CollisionResult): boolean

Overrides Polygon.collidesWithShape
- Defined in src/Physics/Shapes/Box.ts:69
Parameters
- other: Shape
- result: CollisionResult
Returns boolean

containsPoint

containsPoint(point: Vector2): boolean

Overrides Polygon.containsPoint
- Defined in src/Physics/Shapes/Box.ts:80
Parameters
- point: Vector2
Returns boolean

overlaps

overlaps(other: Shape): any

Overrides Polygon.overlaps
- Defined in src/Physics/Shapes/Box.ts:56
Parameters
- other: Shape
Returns any

pointCollidesWithShape

pointCollidesWithShape(point: Vector2, result: CollisionResult): boolean

Overrides Polygon.pointCollidesWithShape
- Defined in src/Physics/Shapes/Box.ts:87
Parameters
- point: Vector2
- result: CollisionResult
Returns boolean

recalculateBounds

recalculateBounds(collider: Collider): void

Inherited from Polygon.recalculateBounds

Overrides Shape.recalculateBounds
- Defined in src/Physics/Shapes/Polygon.ts:213
Parameters
- collider: Collider
Returns void

recalculateCenterAndEdgeNormals

recalculateCenterAndEdgeNormals(): void

Inherited from Polygon.recalculateCenterAndEdgeNormals
- Defined in src/Physics/Shapes/Polygon.ts:67
重新计算多边形中心如果点数改变必须调用该方法

Returns void

setPoints

setPoints(points: Vector2[]): void

Inherited from Polygon.setPoints
- Defined in src/Physics/Shapes/Polygon.ts:53
重置点并重新计算中心和边缘法线

Parameters
- points: Vector2[]
Returns void

updateBox

updateBox(width: number, height: number): void

- Defined in src/Physics/Shapes/Box.ts:39
更新框点，重新计算中心，设置宽度/高度

Parameters
- width: number
- height: number
Returns void

Static Private buildBox

buildBox(width: number, height: number): Vector2[]

- Defined in src/Physics/Shapes/Box.ts:21
在一个盒子的形状中建立多边形需要的点的帮助方法

Parameters
- width: number
- height: number
Returns Vector2[]

Static buildSymmetricalPolygon

buildSymmetricalPolygon(vertCount: number, radius: number): any[]

Inherited from Polygon.buildSymmetricalPolygon
- Defined in src/Physics/Shapes/Polygon.ts:101
建立一个对称的多边形(六边形，八角形，n角形)并返回点

Parameters
- vertCount: number
- radius: number
Returns any[]

Static findPolygonCenter

findPolygonCenter(points: Vector2[]): Vector2

Inherited from Polygon.findPolygonCenter
- Defined in src/Physics/Shapes/Polygon.ts:126
找到多边形的中心。注意，这对于正则多边形是准确的。不规则多边形没有中心。

Parameters
- points: Vector2[]
Returns Vector2

Static getClosestPointOnPolygonToPoint

getClosestPointOnPolygonToPoint(points: Vector2[], point: Vector2, distanceSquared: Ref<number>, edgeNormal: Vector2): Vector2

Inherited from Polygon.getClosestPointOnPolygonToPoint
- Defined in src/Physics/Shapes/Polygon.ts:166
迭代多边形的所有边，并得到任意边上离点最近的点。通过最近点的平方距离和它所在的边的法线返回。点应该在多边形的空间中(点-多边形.位置)

Parameters
- points: Vector2[]
- point: Vector2
- distanceSquared: Ref<number>
- edgeNormal: Vector2
Returns Vector2

Static getFarthestPointInDirection

getFarthestPointInDirection(points: Vector2[], direction: Vector2): Vector2

Inherited from Polygon.getFarthestPointInDirection
- Defined in src/Physics/Shapes/Polygon.ts:142
不知道辅助顶点，所以取每个顶点，如果你知道辅助顶点，执行climbing算法

Parameters
- points: Vector2[]
- direction: Vector2
Returns Vector2

Static recenterPolygonVerts

recenterPolygonVerts(points: Vector2[]): void

Inherited from Polygon.recenterPolygonVerts
- Defined in src/Physics/Shapes/Polygon.ts:116
重定位多边形的点

Parameters
- points: Vector2[]
Returns void

Static rotatePolygonVerts

rotatePolygonVerts(radians: number, originalPoints: Vector2[], rotatedPoints: Vector2[]): void

Inherited from Polygon.rotatePolygonVerts
- Defined in src/Physics/Shapes/Polygon.ts:203
旋转原始点并复制旋转的值到旋转的点

Parameters
- radians: number
- originalPoints: Vector2[]
- rotatedPoints: Vector2[]
Returns void

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