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[Home](./index.md) &gt; [@three3d/volume](./volume.md) &gt; [hollowGradient\_Default](./volume.hollowgradient_default.md)

## hollowGradient\_Default() function

默认的空心比率梯度函数

**Signature:**

```typescript
export declare function hollowGradient_Default({ startHollow, addedHollow, ratio }: LineGradientParams): number;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  { startHollow, addedHollow, ratio } | [LineGradientParams](./volume.linegradientparams.md) |  |

**Returns:**

number