[Home](./index.md) > [@three3d/volume](./volume.md) > [LineGradientParams](./volume.linegradientparams.md) > [addedHollow](./volume.linegradientparams.addedhollow.md) ## LineGradientParams.addedHollow property 轴线终点处的空心比率相对起始点处的空心比率的增加量；即 `endHollow - startHollow` **Signature:** ```typescript addedHollow: number; ```