Point3dArray Class
The Point3dArray class contains static methods that act on arrays of 3d points.
Methods
| Name | Description | |
|---|---|---|
| constructor(): Point3dArray | ||
| centroid(points: Point3d[] | IndexedXYZCollection, result?: Point3d): Point3d Static | return simple average of all coordinates. | |
| cloneDeepJSONNumberArrays(data: MultiLineStringDataVariant): number[][] Static | return similarly-structured array, array of arrays, etc, with the lowest level point data specifically structured as arrays of 3 numbers [1,2,3] |
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| cloneDeepXYZPoint3dArrays(data: MultiLineStringDataVariant): any[] Static | return similarly-structured array, array of arrays, etc, with the lowest level point data specifically structured as Point3d. |
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| clonePoint2dArray(data: Readonly<WritableXYAndZ>[]): Point2d[] Static | Return an array containing Point2d with xy parts of each Point3d | |
| clonePoint3dArray(data: XYZProps[] | Float64Array): Point3d[] Static | Return an array containing clones of the Point3d data[] | |
| cloneWithMaxEdgeLength(points: Point3d[], maxEdgeLength: number): Point3d[] Static | clone points in the input array, inserting points within each edge to limit edge length. | |
| cloneXYZPropsAsFloat64Array(data: XYZProps[]): Float64Array Static | clone an array of XYZProps data, specifically as flattened array of number | |
| cloneXYZPropsAsNumberArray(data: XYZProps[]): number[][] Static | clone an array of XYZProps data, specifically as arrays of 3 numbers | |
| closestPointIndex(data: Readonly<WritableXYAndZ>[], spacePoint: Readonly<WritableXYAndZ>): number Static | Return the index of the closest point in the array (full xyz) | |
| computeConvexHullXY(points: Point3d[], hullPoints: Point3d[], insidePoints: Point3d[], addClosurePoint: boolean = false): void Static | Computes the hull of the XY projection of points. | |
| countNonDuplicates(points: Point3d[], tolerance: number = Geometry.smallMetricDistance): number Static | Count the number of points, but ... | |
| distanceIndexedPointBToSegmentAC(points: Point3d[], indexA: number, indexB: number, indexC: number, extrapolate: boolean): number Static | return perpendicular distance from points[indexB] to the segment points[indexA] to points[indexC]. | |
| evaluateTrilinearDerivativeTransform(points: Point3d[], u: number, v: number, w: number, result?: Transform): Transform Static | Compute a point and derivatives wrt uvw by trilinear mapping. | |
| evaluateTrilinearPoint(points: Point3d[], u: number, v: number, w: number, result?: Point3d): Point3d Static | Compute a point by trilinear mapping. | |
| evaluateTrilinearWeights(weights: Float64Array, u0: number, u1: number, v0: number, v1: number, w0: number, w1: number): void Static | Compute the 8 weights of trilinear mapping | |
| indexOfMostDistantPoint(points: Point3d[], spacePoint: XYZ, farVector: Vector3d): undefined | number Static | Return the index of the point most distant from spacePoint | |
| indexOfPointWithMaxCrossProductMagnitude(points: Point3d[], spacePoint: Point3d, vector: Vector3d, farVector: Vector3d): undefined | number Static | return the index of the point whose vector from space point has the largest magnitude of cross product with given vector. | |
| isAlmostEqual(dataA: undefined | Point3d[] | Float64Array, dataB: undefined | Point3d[] | Float64Array): boolean Static | Apply Geometry.isAlmostEqual to corresponding coordinates | |
| isCloseToPlane(data: Point3d[] | Float64Array, plane: Plane3dByOriginAndUnitNormal, tolerance: number = Geometry.smallMetricDistance): boolean Static | return true iff all points' altitudes are within tolerance of the plane. | |
| minMaxPoints(data: Point3d[]): undefined | { maxXPoint: Point3d, maxYPoint: Point3d, minXPoint: Point3d, minYPoint: Point3d } Static | Return (clones of) points in data[] with min and max x and y parts. | |
| multiplyInPlace(transform: Transform, xyz: Float64Array): void Static | multiply a transform times each x,y,z triple and replace the x,y,z in the packed array | |
| packToFloat64Array(data: Point3d[]): Float64Array Static | pack x,y,z to Float64Array |
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| sumEdgeLengths(data: Point3d[] | Float64Array, addClosureEdge: boolean = false, maxPointsToUse?: number): number Static | Sum lengths of edges. | |
| sumWeightedX(weights: Float64Array, points: Point3d[]): number Static | sum the weighted x components from a point array. | |
| sumWeightedY(weights: Float64Array, points: Point3d[]): number Static | sum the weighted x components from a point array. | |
| sumWeightedZ(weights: Float64Array, points: Point3d[]): number Static | sum the weighted x components from a point array. | |
| unpackNumbersToNestedArrays(data: Float64Array, numPerBlock: number): any[] Static | return an 2-dimensional array containing all the values of data in arrays of numPerBlock |
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| unpackNumbersToNestedArraysIJK(data: Float64Array, numPerBlock: number, numPerRow: number): any[] Static | return an 3-dimensional array containing all the values of data in arrays numPerRow blocks of numPerBlock |
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| unpackNumbersToPoint3dArray(data: number[] | Float64Array): Point3d[] Static | unpack from a number array or Float64Array to an array of Point3d |
Defined in
- geometry3d/PointHelpers.ts Line 429
Last Updated: 30 November, 2023