@calipsa/video-utils/dist/utils/downsampleArray.js

Video utilities

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const lodash_1 = require("lodash");
exports.default = (arr, newSize) => {
    if (newSize < 1) {
        return [];
    }
    if (arr.length <= newSize) {
        return arr.slice();
    }
    if (newSize === 1) {
        const midIndex = arr.length - 1 >> 1;
        return [arr[midIndex]];
    }
    const ratio = (arr.length - 1) / (newSize - 1);
    const indices = (0, lodash_1.range)(newSize).map(i => Math.round(i * ratio));
    return indices.map(i => arr[i]);
};
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