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[Home](./index.md) &gt; [@three3d/effect](./effect.md) &gt; [connectBandGeometryData](./effect.connectbandgeometrydata.md)

## connectBandGeometryData() function

连接两个 BandGeometryData

**Signature:**

```typescript
export declare function connectBandGeometryData(frontData: BandGeometryData, backData: BandGeometryData, options: CreateBandGeometryDataOptions, lengthConnectType?: LengthConnectType): {
    position: number[];
    normal: number[];
    uv: number[];
    color: number[];
    lineDistance: number[];
    index: number[];
    points: Vector3[];
    lengths: number[];
    length: number;
    tangents: Vector3[];
    normals: Vector3[];
    binormals: Vector3[];
};
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  frontData | [BandGeometryData](./effect.bandgeometrydata.md) |  |
|  backData | [BandGeometryData](./effect.bandgeometrydata.md) |  |
|  options | [CreateBandGeometryDataOptions](./effect.createbandgeometrydataoptions.md) |  |
|  lengthConnectType | [LengthConnectType](./effect.lengthconnecttype.md) | _(Optional)_ 长度的连接类型 |

**Returns:**

{ position: number\[\]; normal: number\[\]; uv: number\[\]; color: number\[\]; lineDistance: number\[\]; index: number\[\]; points: Vector3\[\]; lengths: number\[\]; length: number; tangents: Vector3\[\]; normals: Vector3\[\]; binormals: Vector3\[\]; }