Class TriangleGeometry

由三角形构成的几何体

限定：

只包含三角形，不存在四边形等其他多边形

Hierarchy

TriangleGeometry

Index

Constructors

Properties

Methods

classifyPoint classifySegment classifyTriangle clone closestPointWithPoint containsPoint copy fromBox getBox getPoints intersectionWithLine intersectionWithSegment isClosed

Constructors

constructor

new TriangleGeometry(triangles?: Triangle3[]): TriangleGeometry
Parameters
- triangles: Triangle3[] = []
Returns TriangleGeometry
- Defined in src/math/geom/TriangleGeometry.ts:18

Properties

triangles

triangles: Triangle3[]

Methods

classifyPoint

classifyPoint(p: Vector3): 0 | 1 | -1
给指定点分类

Returns
点相对于几何体位置；0:在几何体表面上，1：在几何体外，-1：在几何体内方案：当指定点不在几何体上时，在几何体上找到距离指定点最近点，最近点到给定点形成的向量与最近点所在面（当最近点在多个面上时取点乘摸最大的面）法线点乘大于0时给定点在几何体内，否则在几何体外。
Parameters
- p: Vector3
  
  点
Returns 0 | 1 | -1
- Defined in src/math/geom/TriangleGeometry.ts:93

classifySegment

classifySegment(segment: Segment3): 0 | 1 | -1 | 2
给指定线段分类

Returns
线段相对于几何体位置；0:在几何体表面上，1：在几何体外，-1：在几何体内，2：横跨几何体
Parameters
- segment: Segment3
  
  线段
Returns 0 | 1 | -1 | 2
- Defined in src/math/geom/TriangleGeometry.ts:133

classifyTriangle

classifyTriangle(_triangle: Triangle3): void
给指定三角形分类

Returns
三角形相对于几何体位置；0:在几何体表面上，1：在几何体外，-1：在几何体内
Parameters
- _triangle: Triangle3
Returns void
- Defined in src/math/geom/TriangleGeometry.ts:171

clone

clone(): TriangleGeometry
克隆

Returns TriangleGeometry
- Defined in src/math/geom/TriangleGeometry.ts:266

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/TriangleGeometry.ts:74

containsPoint

containsPoint(p: Vector3): boolean
是否包含指定点
Parameters
- p: Vector3
  
  点
Returns boolean
- Defined in src/math/geom/TriangleGeometry.ts:123

copy

copy(triangleGeometry: TriangleGeometry): TriangleGeometry
拷贝
Parameters
- triangleGeometry: TriangleGeometry
Returns TriangleGeometry
- Defined in src/math/geom/TriangleGeometry.ts:256

fromBox

fromBox(box: Box3): TriangleGeometry
从盒子初始化
Parameters
- box: Box3
  
  盒子
Returns TriangleGeometry
- Defined in src/math/geom/TriangleGeometry.ts:27

getBox

getBox(box?: Box3): Box3
包围盒
Parameters
- box: Box3 = ...
Returns Box3
- Defined in src/math/geom/TriangleGeometry.ts:64

getPoints

getPoints(): Vector3[]
获取所有顶点，去除重复顶点

Returns Vector3[]
- Defined in src/math/geom/TriangleGeometry.ts:38

intersectionWithLine

intersectionWithLine(line3d: Line3): {
points: Vector3[];
segments: Segment3[];
}
与直线碰撞
Parameters
- line3d: Line3
  
  直线
Returns {
points: Vector3[];
segments: Segment3[];
}
- points: Vector3[]
- segments: Segment3[]
- Defined in src/math/geom/TriangleGeometry.ts:180

intersectionWithSegment

intersectionWithSegment(segment: Segment3): {
points: Vector3[];
segments: Segment3[];
}
与线段相交

Returns
不相交时返回null，相交时返回碰撞线段列表与碰撞点列表
Parameters
- segment: Segment3
  
  线段
Returns {
points: Vector3[];
segments: Segment3[];
}
- points: Vector3[]
- segments: Segment3[]
- Defined in src/math/geom/TriangleGeometry.ts:217

isClosed

isClosed(): boolean
是否闭合方案：获取所有三角形的线段，当每条线段（a,b）都存在且仅有一条与之相对于的线段（b，a）时几何体闭合

Returns boolean
- Defined in src/math/geom/TriangleGeometry.ts:51

Generated using TypeDoc