API Reference > geometry-core > Curve > CurveChain > cyclicCurvePrimitive cyclicCurvePrimitive Method Return the [index] curve primitive, using modulo to mapindex to the cyclic indexing. In particular, -1 is the final curve. cyclicCurvePrimitive(index: number): CurvePrimitive | undefined Parameter Type Description index number cyclic index Returns - CurvePrimitive | undefined Defined in core/geometry/src/curve/CurveCollection.ts Line 362 Last Updated: 13 June, 2024