[Home](./index.md) > [@three3d/effect](./effect.md) > [CreateBandGeometryDataOptions](./effect.createbandgeometrydataoptions.md) > [prePoint](./effect.createbandgeometrydataoptions.prepoint.md) ## CreateBandGeometryDataOptions.prePoint property 上一个顶点 **Signature:** ```typescript prePoint?: Vector3 | null; ```