API Reference > imodeljs-common > Geometry > QPoint3dList QPoint3dList Class A list of QPoint3ds all quantized to the same range. Methods Name Description constructor(params?: QParams3d): QPoint3dList Construct an empty list set up to quantize to the supplied range. [iterator](): IterableIterator<QPoint3d> An iterator over the points in the list. add(pt: Point3d): void Quantizes the supplied Point3d to this list's range and appends it to the list. clear(): void Removes all points from the list. fromTypedArray(range: Range3d, array: Uint16Array): void Reinitialize from a Uint16Array in which the first three elements specify the x, y, and z components of the first point, the second three elements specify the components push(qpt: QPoint3d): void Adds a previously-quantized point to this list. requantize(params: QParams3d): void Changes the quantization parameters and requantizes all points in the list to the new range. reset(params: QParams3d): void Clears out the contents of the list and changes the quantization parameters. toTypedArray(): Uint16Array Extracts the current contents of the list as a Uint16Array such that the first 3 elements contain the first point's x, y, and z components, unquantize(index: number, out?: Point3d): Point3d Returns the unquantized value of the point at the specified index in the list. createFrom(points: Point3d[], params: QParams3d): QPoint3dList Static Construct a list containing all points in the supplied list, quantized using the supplied parameters. fromPoints(points: Point3d[], out?: QPoint3dList): QPoint3dList Static Construct a QPoint3dList containing all points in the supplied list, quantized to the range of those points. Properties Name Type Description length Accessor ReadOnly number The number of points in the list. list Accessor ReadOnly undefined The list of quantized points. params Readonly QParams3d Parameters used to quantize the points. Defined in core/common/src/QPoint.ts Line 564 Last Updated: 11 June, 2024