API Reference > geometry-core > ArraysAndInterfaces > IndexedXYZCollection > accumulateCrossProductIndexIndexIndex accumulateCrossProductIndexIndexIndex MethodAbstract Return the cross product of vectors from origin point at indexA to target points at indexB and indexC accumulateCrossProductIndexIndexIndex(origin: number, indexA: number, indexB: number, result: Vector3d): void Parameter Type Description origin number index of origin indexA number index of first target within the array indexB number index of second target within the array result Vector3d caller-allocated vector. Returns - void return true if indexA, indexB both valid Defined in geometry3d/IndexedXYZCollection.ts Line 112 Last Updated: 11 June, 2024