06散らばったオブジェクトを一括でグリッド整列

<main class="stage">
<div class="scene is-demo" id="scene">
  <div class="frame" id="frame">
    <div class="chip" data-i="0"><span class="chipGlyph"></span></div>
    <div class="chip" data-i="1"><span class="chipGlyph"></span></div>
    <div class="chip" data-i="2"><span class="chipGlyph"></span></div>
    <div class="chip" data-i="3"><span class="chipGlyph"></span></div>
    <div class="chip" data-i="4"><span class="chipGlyph"></span></div>
    <div class="chip" data-i="5"><span class="chipGlyph"></span></div>
  </div>
  <button type="button" class="arrangeBtn" id="arrangeBtn">整列</button>
  <div class="status" id="status" aria-live="polite">散らばり</div>
</div>
</main>

@use "../../../../site/static/demo-tokens" as *;

// 변수 3개
$duration: $dur-enter;
$easing: $ease-out;
$color: $subject-sky;

// 계산 겹: index.html 의 gridTarget() 이 칩 인덱스를 col=i%GRID_COLS, row=floor(i/GRID_COLS) 로
// 나누고 그 자리의 실좌표를 산술로 구해, 버튼 클릭마다 모든 칩을 동시에 그 좌표까지 트윈한다.
@include stage($stage-yellow);

.scene {
  position: relative;
  width: 320px;
  height: 180px;
  border-radius: $r-card;
  overflow: hidden;
  box-shadow: $shadow-raised;
  background: linear-gradient(160deg, #fff6d9, $stage-yellow 85%);
}

.frame {
  position: absolute;
  left: 14px;
  top: 8px;
  width: 234px;
  height: 156px;
}

.chip {
  position: absolute;
  width: 42px;
  height: 34px;
  border-radius: $r-sm;
  background: linear-gradient(135deg, $subject-sky, $subject-mint);
  box-shadow: $shadow-press;
  will-change: transform;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chipGlyph {
  width: 14px;
  height: 14px;
  border-radius: $r-xs;
  background: rgba($subject-ink, .28);
}

.arrangeBtn {
  position: absolute;
  right: $sp-3;
  bottom: $sp-3;
  padding: $sp-1 $sp-3;
  border: none;
  border-radius: $r-control;
  background: $subject-ink;
  color: $subject-cream;
  font-size: 11px;
  cursor: pointer;
  box-shadow: $shadow-press;

  &:focus-visible { outline: 2px solid $color; outline-offset: 2px; }
  &:active { transform: translateY(1px); }
}

.status {
  position: absolute;
  left: $sp-3;
  bottom: $sp-3;
  padding: $sp-1 $sp-2;
  border-radius: $r-pill;
  background: rgba($subject-ink, .1);
  color: $subject-ink;
  font-size: 10px;
}

@media (max-width: 340px) {
  .scene { width: 220px; height: 124px; }
  .frame { left: 8px; top: 6px; width: 160px; height: 104px; }
  .chip { width: 30px; height: 24px; }
  .chipGlyph { width: 10px; height: 10px; }
  .arrangeBtn, .status { font-size: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  // 실사용 경로 적용 — 버튼 클릭 시 좌표 전환은 index.html 트윈 로직이 그대로 담당한다(끄지 않음).
  // scss 만: 버튼 눌림·포커스 전환만 꺼서 잔여 트랜지션을 없앤다.
  .arrangeBtn { transition: none; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.scene {
  position: relative;
  width: 320px;
  height: 180px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  background: linear-gradient(160deg, #fff6d9, #ffd23f 85%);
}

.frame {
  position: absolute;
  left: 14px;
  top: 8px;
  width: 234px;
  height: 156px;
}

.chip {
  position: absolute;
  width: 42px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, #6ec8ff, #4cd4a6);
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  will-change: transform;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chipGlyph {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: rgba(23, 20, 26, 0.28);
}

.arrangeBtn {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 4px 12px;
  border: none;
  border-radius: 12px;
  background: #17141a;
  color: #fff7e6;
  font-size: 11px;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
}
.arrangeBtn:focus-visible {
  outline: 2px solid #6ec8ff;
  outline-offset: 2px;
}
.arrangeBtn:active {
  transform: translateY(1px);
}

.status {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.1);
  color: #17141a;
  font-size: 10px;
}

@media (max-width: 340px) {
  .scene {
    width: 220px;
    height: 124px;
  }
  .frame {
    left: 8px;
    top: 6px;
    width: 160px;
    height: 104px;
  }
  .chip {
    width: 30px;
    height: 24px;
  }
  .chipGlyph {
    width: 10px;
    height: 10px;
  }
  .arrangeBtn, .status {
    font-size: 9px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .arrangeBtn {
    transition: none;
  }
}

(function () {
  var GRID_COLS = 3;
  var CELL_W = 58;
  var CELL_H = 46;
  var ORIGIN_X = 10;
  var ORIGIN_Y = 12;
  var HOP_MS = 480;
  var HOLD_MS = 900;

  var SCATTER = [
    { x: 6, y: 6 }, { x: 138, y: 16 }, { x: 62, y: 66 },
    { x: 168, y: 58 }, { x: 24, y: 100 }, { x: 150, y: 104 }
  ];

  var scene = document.getElementById('scene');
  var frame = document.getElementById('frame');
  var chips = Array.prototype.slice.call(document.querySelectorAll('.chip'));
  var btn = document.getElementById('arrangeBtn');
  var status = document.getElementById('status');
  var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;

  var arranged = false;
  var current = SCATTER.map(function (p) { return { x: p.x, y: p.y }; });
  var timers = [];

  function easeOutCubic(t) { return 1 - Math.pow(1 - t, 3); }

  // 격자 인덱스 → 좌표: col = i % GRID_COLS, row = floor(i / GRID_COLS), 그 위치에
  // ORIGIN + col*CELL_W / row*CELL_H 를 더해 칩 하나하나의 목표 좌표를 산술로 얻는다.
  function gridTarget(i) {
    var col = i % GRID_COLS;
    var row = Math.floor(i / GRID_COLS);
    return { x: ORIGIN_X + col * CELL_W, y: ORIGIN_Y + row * CELL_H };
  }

  function paint() {
    chips.forEach(function (chip, i) {
      chip.style.transform = 'matrix(1,0,0,1,' + current[i].x.toFixed(1) + ',' + current[i].y.toFixed(1) + ')';
    });
  }

  function animateTo(targets, onDone) {
    var from = current.map(function (p) { return { x: p.x, y: p.y }; });
    var start = performance.now();
    function step(now) {
      var p = Math.min(1, (now - start) / HOP_MS);
      var e = easeOutCubic(p);
      for (var i = 0; i < chips.length; i++) {
        current[i].x = from[i].x + (targets[i].x - from[i].x) * e;
        current[i].y = from[i].y + (targets[i].y - from[i].y) * e;
      }
      paint();
      if (p < 1) requestAnimationFrame(step);
      else if (onDone) onDone();
    }
    requestAnimationFrame(step);
  }

  function toggleArrange() {
    arranged = !arranged;
    var targets = arranged ? chips.map(function (_, i) { return gridTarget(i); }) : SCATTER;
    status.textContent = arranged ? '整列済み' : '散らばり';
    btn.setAttribute('aria-pressed', String(arranged));
    animateTo(targets);
  }

  function human() {
    if (scene.classList.contains('is-demo')) {
      scene.classList.remove('is-demo');
      timers.forEach(function (t) { clearTimeout(t); clearInterval(t); });
      timers = [];
    }
  }

  btn.setAttribute('aria-pressed', 'false');
  btn.addEventListener('click', function () {
    human();
    toggleArrange();
  });

  paint();

  // reduce: 실사용 경로 적용 — 버튼 클릭은 위 toggleArrange() 가 트윈으로 즉시 목표 좌표까지 움직인다.
  // 아래 자동 루프는 시연 게이트만 — 散らばり↔정렬을 스스로 반복하며 reduce 에서는 돌지 않는다.
  function loop() {
    if (!scene.classList.contains('is-demo')) return;
    toggleArrange();
    timers.push(setTimeout(loop, HOP_MS + HOLD_MS));
  }

  if (!reduce) {
    timers.push(setTimeout(loop, HOLD_MS));
  }
})();

import { useEffect, useRef } from 'react';
import styles from './XfIconGridArrange.module.scss';

const GRID_COLS = 3;
const CELL_W = 58;
const CELL_H = 46;
const ORIGIN_X = 10;
const ORIGIN_Y = 12;
const HOP_MS = 480;
const HOLD_MS = 900;
const SCATTER = [
  { x: 6, y: 6 }, { x: 138, y: 16 }, { x: 62, y: 66 },
  { x: 168, y: 58 }, { x: 24, y: 100 }, { x: 150, y: 104 }
];

export default function XfIconGridArrange() {
  const sceneRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const scene0 = sceneRef.current;
    if (!scene0) return undefined;
    const scene = scene0;
    const chips = Array.from(scene.querySelectorAll<HTMLDivElement>('.' + styles.chip));
    const btn0 = scene.querySelector<HTMLButtonElement>('.' + styles.arrangeBtn);
    const status0 = scene.querySelector<HTMLDivElement>('.' + styles.status);
    if (chips.length === 0 || !btn0 || !status0) return undefined;
    const btn = btn0;
    const status = status0;

    const reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;

    let arranged = false;
    let current = SCATTER.map((p) => ({ x: p.x, y: p.y }));
    let rafId = 0;
    let timers: number[] = [];

    function easeOutCubic(t: number) { return 1 - Math.pow(1 - t, 3); }

    // 격자 인덱스 → 좌표: col = i % GRID_COLS, row = floor(i / GRID_COLS), 그 위치에
    // ORIGIN + col*CELL_W / row*CELL_H 를 더해 칩 하나하나의 목표 좌표를 산술로 얻는다.
    function gridTarget(i: number) {
      const col = i % GRID_COLS;
      const row = Math.floor(i / GRID_COLS);
      return { x: ORIGIN_X + col * CELL_W, y: ORIGIN_Y + row * CELL_H };
    }

    function paint() {
      chips.forEach((chip, i) => {
        chip.style.transform = 'matrix(1,0,0,1,' + current[i].x.toFixed(1) + ',' + current[i].y.toFixed(1) + ')';
      });
    }

    function animateTo(targets: Array<{ x: number; y: number }>, onDone?: () => void) {
      const from = current.map((p) => ({ x: p.x, y: p.y }));
      const start = performance.now();
      function step(now: number) {
        const p = Math.min(1, (now - start) / HOP_MS);
        const e = easeOutCubic(p);
        for (let i = 0; i < chips.length; i++) {
          current[i] = {
            x: from[i].x + (targets[i].x - from[i].x) * e,
            y: from[i].y + (targets[i].y - from[i].y) * e
          };
        }
        paint();
        if (p < 1) rafId = requestAnimationFrame(step);
        else if (onDone) onDone();
      }
      rafId = requestAnimationFrame(step);
    }

    function toggleArrange() {
      arranged = !arranged;
      const targets = arranged ? chips.map((_, i) => gridTarget(i)) : SCATTER;
      status.textContent = arranged ? '정렬됨' : '흩어짐';
      btn.setAttribute('aria-pressed', String(arranged));
      animateTo(targets);
    }

    function human() {
      if (scene.classList.contains(styles['is-demo'])) {
        scene.classList.remove(styles['is-demo']);
        timers.forEach((t) => window.clearTimeout(t));
        timers = [];
      }
    }

    function onClick() {
      human();
      toggleArrange();
    }

    btn.setAttribute('aria-pressed', 'false');
    btn.addEventListener('click', onClick);

    paint();

    // reduce: 실사용 경로 적용 — 버튼 클릭은 위 toggleArrange() 가 트윈으로 즉시 목표 좌표까지 움직인다.
    // 아래 자동 루프는 시연 게이트만 — 흩어짐↔정렬을 스스로 반복하며 reduce 에서는 돌지 않는다.
    function loop() {
      if (!scene.classList.contains(styles['is-demo'])) return;
      toggleArrange();
      timers.push(window.setTimeout(loop, HOP_MS + HOLD_MS));
    }

    if (!reduce) {
      timers.push(window.setTimeout(loop, HOLD_MS));
    }

    return () => {
      btn.removeEventListener('click', onClick);
      timers.forEach((t) => window.clearTimeout(t));
      cancelAnimationFrame(rafId);
    };
  }, []);

  return (
    <main className={styles.stage}>
      <div className={styles.scene + ' ' + styles['is-demo']} ref={sceneRef}>
        <div className={styles.frame}>
          <div className={styles.chip} data-i="0"><span className={styles.chipGlyph}></span></div>
          <div className={styles.chip} data-i="1"><span className={styles.chipGlyph}></span></div>
          <div className={styles.chip} data-i="2"><span className={styles.chipGlyph}></span></div>
          <div className={styles.chip} data-i="3"><span className={styles.chipGlyph}></span></div>
          <div className={styles.chip} data-i="4"><span className={styles.chipGlyph}></span></div>
          <div className={styles.chip} data-i="5"><span className={styles.chipGlyph}></span></div>
        </div>
        <button type="button" className={styles.arrangeBtn}>정렬</button>
        <div className={styles.status} aria-live="polite">흩어짐</div>
      </div>
    </main>
  );
}