API Reference > geometry-core > CartesianGeometry > Point4dArray Point4dArray Class The Point4dArray class contains static methods that act on arrays of 4d points. Methods Name Description constructor(): Point4dArray isAlmostEqual(dataA: undefined | Float64Array | Point4d[], dataB: undefined | Float64Array | Point4d[]): boolean Static test for near equality of all corresponding numeric values, treated as coordinates. isCloseToPlane(data: Float64Array | Point4d[], plane: Plane3dByOriginAndUnitNormal, tolerance: number = Geometry.smallMetricDistance): boolean Static return true iff all xyzw points' altitudes are within tolerance of the plane. multiplyInPlace(transform: Transform, xyzw: Float64Array): void Static Multiply (and replace) each block of 4 values as a Point4d. packPointsAndWeightsToFloat64Array(data: number[] | Point3d[] | Float64Array, weights: number[] | Float64Array, result?: Float64Array): undefined | Float64Array Static pack each point and its corresponding weight into a buffer of xyzw xyzw ... packToFloat64Array(data: Point4d[], result?: Float64Array): Float64Array Static pack x,y,z,w in Float64Array. unpackFloat64ArrayToPointsAndWeights(data: Float64Array, points: Point3d[], weights: number[], pointFormatter: (x: number, y: number, z: number) => any = Point3d.create): void Static unpack from xyzw xyzw... unpackToPoint4dArray(data: Float64Array): Point4d[] Static unpack from ... Defined in geometry3d/PointHelpers.ts Line 231 Last Updated: 11 June, 2024