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createPointCloud#applyScaleStats

Summary

createPointCloud#applyScaleStats updates the current scale transform from computed statistics. Finite min and max values replace the scale domain; when both percentile bounds are non-null, they replace the clamp range. Other statistics fields are not used.

Syntax

PointCloud.applyScaleStats(stats: ScaleStatsResult): void
pointCloud.applyScaleStats(stats);

Parameters

Name Type Required Description
stats ScaleStatsResult Yes Precomputed scale statistics used to update transform parameters.

Returns

void

Type Details

ScaleStatsResult

type ScaleStatsResult = {

    count: number;

    finiteCount: number;

    min: number;

    max: number;

    percentileMin: number | null;

    percentileMax: number | null;

    histogramBins: number | null;

};

ScaleStatsResult Fields

Name Type Required Description
count number Yes Number of source records examined. Informational; this method does not use it.
finiteCount number Yes Number of finite values found. Informational; this method does not use it.
min number Yes Finite minimum to install as domainMin; ignored when non-finite.
max number Yes Finite maximum to install as domainMax; ignored when non-finite.
percentileMin number \| null Yes Lower clamp bound, applied only when both percentile bounds are non-null.
percentileMax number \| null Yes Upper clamp bound, applied only when both percentile bounds are non-null.
histogramBins number \| null Yes Histogram resolution used to produce the result; not used when applying it.

Example

const canvas = document.querySelector("canvas");
const wgpu = await WasmGPU.create(canvas);

const pointCloud = wgpu.createPointCloud({ data: new Float32Array([0, 0, 0, 0.1, 1, 0, 0, 0.8]), scaleTransform: { mode: "linear", domainMin: 0, domainMax: 1 } });
const stats = { count: 2, finiteCount: 2, min: 0, max: 1, percentileMin: 0, percentileMax: 1, histogramBins: null };
pointCloud.applyScaleStats(stats);
console.log(pointCloud.scaleTransform.domainMax); // 1

See Also