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[Home](./index.md) &gt; [@three3d/effect](./effect.md) &gt; [BandGeometry](./effect.bandgeometry.md) &gt; [getDivisionIndex](./effect.bandgeometry.getdivisionindex.md)

## BandGeometry.getDivisionIndex() method

获取顶点索引对应的分段索引

**Signature:**

```typescript
getDivisionIndex(vertexIndex: number): number;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  vertexIndex | number |  |

**Returns:**

number


## Remarks

分段指的是沿路径的方向上的分段