Function detectVisualInstability

scripts/reproWorkspaceSwitchTearWeb.ts:380–395

(frames: SwitchFrameSample[])

}

async function detectVisualInstability(frames: SwitchFrameSample[]) {
  const anchorIndex = frames.findIndex((frame) => frame.containsTargetMarker);
  if (anchorIndex === -1) return [];
  const diffs = [] as Array<{ fromFrame: number; toFrame: number; ratio: number }>;
  for (let index = anchorIndex; index < frames.length - 1; index++) {
    const current = frames[index];
    const next = frames[index + 1];
    if (!current.containsTargetMarker || !next.containsTargetMarker) continue;
    diffs.push({
      fromFrame: current.frame,
      toFrame: next.frame,
      ratio: await computeDiffRatio(current.png, next.png),
    });
  }
  return diffs.filter((diff) => diff.ratio > 0.01);
}

function stripPng(frames: SwitchFrameSample[]) {
  return frames.map(({ png, ...rest }) => rest);