Streamline a point set, removing irregularities.

getStreamlinedPoints.ts

/**
 * ## getStreamlinedPoints
 * @description Streamline a point set, removing irregularities.
 * @param points An array of points (as `[x, y]`).
 * @returns number[][]
 */
export function getStreamlinedPoints(points: number[][], streamline = 0.5) {
  return points.reduce<number[][]>((acc, cur, i, arr) => {
    if (i === 0) {
      acc.push(cur)
      return acc
    }

    acc.push(vec.lrp(arr[i - 1], cur, 1 - streamline))
    return acc
  }, [])
}