@three3d/tools/doc/api/tools.discriminaterelationshipofpoint_polygon.md

@three3d/tools 提供了 ThreeJS 常用的工具库

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## discriminateRelationshipOfPoint\_Polygon() function

判别点和多边形的位置关系

**Signature:**

```typescript
export declare function discriminateRelationshipOfPoint_Polygon(point: Vector2, polygon: Vector2[]): GeometricRelationship.Dissociation | GeometricRelationship.Tangency | GeometricRelationship.Contain;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  point | Vector2 |  |
|  polygon | Vector2\[\] |  |

**Returns:**

[GeometricRelationship.Dissociation](./tools.geometricrelationship.md) \| [GeometricRelationship.Tangency](./tools.geometricrelationship.md) \| [GeometricRelationship.Contain](./tools.geometricrelationship.md)


## Remarks

射线法；可以是任意多边形

有以下几种情况： - Contain：包含；点在多边形内部 - Tangency：相切；点在多边形的边上； - Dissociation：相离：点在多边形外部；