[Home](./index.md) > [@three3d/volume](./volume.md) > [ParticleVolumeFeature](./volume.particlevolumefeature.md) ## ParticleVolumeFeature interface 粒子体积特征 **Signature:** ```typescript export interface ParticleVolumeFeature extends VolumeFeature ``` **Extends:** [VolumeFeature](./volume.volumefeature.md) ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [hollow?](./volume.particlevolumefeature.hollow.md) | | number | _(Optional)_ 空心因子 |