@three3d/effect/doc/api/effect.getnearbyindex.md

@three3d/effect 提供了 ThreeJS 的特效

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## getNearbyIndex() function

获取 target 附近的索引

**Signature:**

```typescript
export declare function getNearbyIndex(sortedNums: ArrayLike<number>, target: number, right?: boolean): number;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  sortedNums | ArrayLike&lt;number&gt; | 按照从小到大顺序数字数组 |
|  target | number | 目标值 |
|  right | boolean | _(Optional)_ 是否获取目标值右侧的索引； |

**Returns:**

number

当返回 -1 时，表示没找到