API Reference > geometry-core > CartesianGeometry > PointStreamGrowableXYZArrayCollector PointStreamGrowableXYZArrayCollector Class Concrete class to handle startChain, handleXYZ and endChain calls and return a (one-level deep array of GrowableXYZArray Extends - Methods Name Description claimArrayOfGrowableXYZArray(): GrowableXYZArray[] | undefined Return MultiLineStringDataVariant as an array of GrowableXYZArray endChain(_chainData: MultiLineStringDataVariant, _isLeaf: boolean): void handleXYZ(x: number, y: number, z: number): void startChain(_chainData: MultiLineStringDataVariant, _isLeaf: boolean): void Defined in core/geometry/src/geometry3d/PointStreaming.ts Line 67 Last Updated: 13 June, 2024