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[Home](./index.md) &gt; [@three3d/volume](./volume.md) &gt; [LineData3DOptions](./volume.linedata3doptions.md) &gt; [hollowGradient](./volume.linedata3doptions.hollowgradient.md)

## LineData3DOptions.hollowGradient property

空心比梯度函数

**Signature:**

```typescript
hollowGradient?: GetLineGradientValue;
```