[Home](./index.md) > [@three3d/effect](./effect.md) > [CreateBandGeometryDataOptions](./effect.createbandgeometrydataoptions.md) > [connectPre](./effect.createbandgeometrydataoptions.connectpre.md) ## CreateBandGeometryDataOptions.connectPre property 是否拼接以前的索引 **Signature:** ```typescript connectPre?: boolean | null; ```