코드: 붐 💣

export function decimateArray(arr, passes = 1, fidelity = 2) {
  let tmpArr = arr.filter((_, index) => index % fidelity === 0);
  passes--;
  if (passes) {
    tmpArr = decimateArray(tmpArr, passes, fidelity);
  }
  return tmpArr;
}

사용 사례:

"I have a large array of xy coordinates, I need it to draw freehand on canvas but it's too much data to work with quickly, I just want to draw an approximate polygon. I want the array to be smaller so I can more efficiently loop through the data and I dont care about all of the data just the start and end."

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