API Reference > geometry-core > Curve > CurveChain > cyclicCurvePrimitive cyclicCurvePrimitive Method Return the [index] curve primitive, optionally using modulo to mapindex to the cyclic indexing. In particular, -1 is the final curve. cyclicCurvePrimitive(index: number, cyclic: boolean = true): undefined | CurvePrimitive Parameter Type Description index number cyclic index cyclic boolean Returns - undefined | CurvePrimitive Defined in curve/CurveCollection.ts Line 217 Last Updated: 29 November, 2022