Ring-Cascade-Permutation-Algorithm/Ring-Cascade_demo.html at main · Yusheng-Hu/Ring-Cascade-Permutation-Algorithm · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Circle Permutation System</title>
    <style>
        :root {
            --c0: #2563eb; --c1: #d97706; --c2: #7c3aed; --c3: #dc2626; --c4: #059669;
            --ring-color: #334155;
        }
        body { background: #f8fafc; color: #1e293b; font-family: 'Segoe UI', sans-serif; display: flex; margin: 0; height: 100vh; overflow: hidden; }

        .stage-area { flex: 1; position: relative; background: #ffffff; overflow: hidden; }
        .sidebar { width: 350px; background: #ffffff; border-left: 2px solid #e2e8f0; display: flex; flex-direction: column; padding: 25px; gap: 15px; z-index: 100; }

        .card { background: #f1f5f9; border: 1px solid #e2e8f0; padding: 18px; border-radius: 12px; }
        .label { font-size: 11px; color: #64748b; font-weight: bold; text-transform: uppercase; margin-bottom: 5px; }
        .p-val { font-size: 36px; font-weight: 900; letter-spacing: 5px; text-align: center; color: #0f172a; font-family: monospace; }
        .res-box { font-size: 16px; font-weight: bold; color: #334155; font-family: monospace; min-height: 24px; padding: 10px; background: white; border-radius: 6px; border: 1px solid #e2e8f0; }

        button { width: 100%; padding: 18px; border-radius: 10px; border: none; font-weight: bold; font-size: 16px; cursor: pointer; transition: 0.3s; background: #0f172a; color: white; }
        button:disabled { background: #cbd5e1; cursor: wait; opacity: 0.7; }
        .btn-stop { background: #ef4444 !important; }

        .axis-line { position: absolute; width: 70px; left: 110px; height: 100%; background: #f8fafc; border-right: 2px solid #cbd5e1; z-index: 1; }

        .ring-path {
            position: absolute; border: 5px solid var(--ring-color); border-radius: 50%;
            left: 110px; transform: translateY(-50%) scale(0);
            opacity: 0; pointer-events: none; box-sizing: border-box; z-index: 5;
            transition: all 1.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        .ring-path.show { opacity: 1; transform: translateY(-50%) scale(1); }

        .node {
            position: absolute; width: 46px; height: 46px;
            display: flex; align-items: center; justify-content: center;
            font-weight: 900; border-radius: 8px; color: white;
            transition: all 1.4s cubic-bezier(0.4, 0, 0.2, 1);
            font-size: 19px; z-index: 50; opacity: 0;
        }
        .node.active { outline: 4px solid #000; transform: scale(1.1); z-index: 60; box-shadow: 0 6px 15px rgba(0,0,0,0.2); }

        .n0 { background: var(--c0); } .n1 { background: var(--c1); }
        .n2 { background: var(--c2); } .n3 { background: var(--c3); }
        .n4 { background: var(--c4); }

        .status-msg { font-size: 14px; font-weight: bold; color: #2563eb; margin-bottom: 5px; }
    </style>
</head>
<body>

    <div class="stage-area" id="stage">
        <div class="axis-line"></div>
    </div>

    <div class="sidebar">
        <div class="card">
            <div class="label">P Pointer</div>
            <div class="p-val" id="p-disp">00000</div>
        </div>
        <div class="card">
            <div class="label">Recursive Result</div>
            <div class="res-box" id="res-disp">Initializing...</div>
        </div>
        <div class="card">
            <div class="label">Control Center</div>
            <div id="status-txt" class="status-msg">SYSTEM BOOTING</div>
            <button onclick="toggle()" id="ctrl-btn" disabled>LOADING SYSTEM...</button>
        </div>
        <div class="card" style="font-size: 12px; color: #64748b; line-height: 1.6;">
            <strong>提示：</strong><br>
            当全排列运行完成后，点击 RESTART 将重置指针并重新执行入场动画。
        </div>
    </div>

<script>
    const hRatio = 0.2;
    const CONFIG = [
        { lv: 1, y: 120, rx: 80 }, { lv: 2, y: 280, rx: 140 },
        { lv: 3, y: 440, rx: 200 }, { lv: 4, y: 600, rx: 260 },
        { lv: 5, y: 760, rx: 320 }
    ];
    let P = [0, 0, 0, 0, 0];
    let isPlaying = false;
    let isFinished = false;

    function getSeq(lv, p) {
        if (lv === 0) return [0];
        let res = [...getSeq(lv - 1, p), lv];
        let shift = p[lv];
        for(let i=0; i<shift; i++) res.push(res.shift());
        return res;
    }

    async function animatedInit() {
        const stage = document.getElementById('stage');
        const status = document.getElementById('status-txt');
        const btn = document.getElementById('ctrl-btn');

        // 清理旧元素（用于重新开始时）
        document.querySelectorAll('.ring-path, .node').forEach(el => el.remove());

        isFinished = false;
        btn.disabled = true;
        btn.innerText = "LOADING SYSTEM...";

        for (let l = 0; l < 5; l++) {
            status.innerText = `[STEP ${l+1}/5] CONSTRUCTING LAYER...`;
            const conf = CONFIG[l];
            const r = document.createElement('div');
            r.className = 'ring-path';
            r.style.width = (conf.rx * 2) + 'px';
            r.style.height = (conf.rx * 2 * hRatio) + 'px';
            r.style.top = conf.y + 'px';
            stage.appendChild(r);

            r.offsetHeight;
            r.classList.add('show');
            await new Promise(r => setTimeout(r, 800));

            const seq = getSeq(l, P);
            for (let idx = 0; idx < seq.length; idx++) {
                const val = seq[idx];
                const el = createNode(l, val);
                if (val === l && l > 0) {
                    el.style.left = "90%"; el.style.top = conf.y + "px";
                } else if (l > 0) {
                    placeNode(el, idx, CONFIG[l-1], true);
                } else {
                    el.style.left = "110px"; el.style.top = "0px";
                }
                stage.appendChild(el);
                el.offsetHeight;
                placeNode(el, idx, conf);
                el.style.opacity = 1;
                await new Promise(r => setTimeout(r, 200));
            }
        }

        status.innerText = "SYSTEM ACTIVE";
        btn.disabled = false;
        btn.innerText = "START SIMULATION";
        updateLabels();
    }

    function placeNode(el, idx, conf, instant) {
        const angle = Math.PI - (idx * (2 * Math.PI / (conf.lv + 1)));
        const x = (110 + conf.rx) + conf.rx * Math.cos(angle) - 23;
        const y = conf.y + (conf.rx * hRatio * Math.sin(angle)) - 23;
        el.style.transition = instant ? 'none' : 'all 1.4s cubic-bezier(0.4, 0, 0.2, 1)';
        el.style.left = x + 'px';
        el.style.top = y + 'px';
        if (idx === 0) el.classList.add('active'); else el.classList.remove('active');
    }

    function createNode(lv, val) {
        const el = document.createElement('div');
        el.id = `node-${lv}-${val}`;
        el.className = `node n${val} lv-${lv}`;
        el.innerText = val;
        return el;
    }

    function refreshNode(val, idx, lv, inst = false) {
        let el = document.getElementById(`node-${lv}-${val}`) || createNode(lv, val);
        if(!el.parentNode) document.getElementById('stage').appendChild(el);
        placeNode(el, idx, CONFIG[lv], inst);
    }

    function updateLabels() {
        document.getElementById('p-disp').innerText = P.join('');
        document.getElementById('res-disp').innerText = "[" + getSeq(4, P).join(', ') + "]";
    }

    async function processCascade(topLv) {
        if (topLv < 4) {
            for (let l = 4; l > topLv; l--) {
                document.querySelectorAll(`.lv-${l}`).forEach(n => {
                    n.style.opacity = 0; n.style.transform = 'scale(0.5)';
                });
            }
            await new Promise(r => setTimeout(r, 700));
            for (let l = 4; l > topLv; l--) document.querySelectorAll(`.lv-${l}`).forEach(n => n.remove());
        }
        updateLabels();
        for (let l = 0; l <= topLv; l++) {
            getSeq(l, P).forEach((v, i) => refreshNode(v, i, l));
        }
        await new Promise(r => setTimeout(r, 1100));
        if (topLv < 4) {
            for (let l = topLv + 1; l < 5; l++) {
                const base = getSeq(l - 1, P);
                for (let idx = 0; idx < base.length; idx++) {
                    const el = createNode(l, base[idx]);
                    placeNode(el, idx, CONFIG[l-1], true);
                    el.style.opacity = 0;
                    document.getElementById('stage').appendChild(el);
                    setTimeout(() => { placeNode(el, idx, CONFIG[l]); el.style.opacity = 1; }, idx * 60);
                }
                await new Promise(r => setTimeout(r, 1200));
                const elN = createNode(l, l);
                const targetIdx = getSeq(l, P).indexOf(l);
                elN.style.left = "95%"; elN.style.top = CONFIG[l].y + "px"; elN.style.opacity = 0;
                document.getElementById('stage').appendChild(elN);
                await new Promise(r => setTimeout(r, 50));
                placeNode(elN, targetIdx, CONFIG[l]); elN.style.opacity = 1;
                await new Promise(r => setTimeout(r, 1000));
            }
        }
    }

    async function runStep() {
        if (!isPlaying) return;
        let topLv = 4;
        P[4]++;
        for (let i = 4; i > 0; i--) {
            if (P[i] >= (i + 1)) { P[i] = 0; P[i - 1]++; topLv = i - 1; }
        }
        if (P[0] > 0) { finishCtrl(); return; }
        await processCascade(topLv);
        setTimeout(runStep, 800);
    }

    function finishCtrl() {
        isPlaying = false;
        isFinished = true;
        const btn = document.getElementById('ctrl-btn');
        btn.innerText = "RESTART";
        btn.classList.remove('btn-stop');
        document.getElementById('status-txt').innerText = "ALL PERMUTATIONS COMPLETE";
    }

    function toggle() {
        if (isFinished) {
            // 如果已经完成，重置数据并重新初始化
            P = [0, 0, 0, 0, 0];
            animatedInit();
            return;
        }

        isPlaying = !isPlaying;
        const btn = document.getElementById('ctrl-btn');
        if (isPlaying) {
            btn.innerText = "STOP SIMULATION";
            btn.classList.add('btn-stop');
            runStep();
        } else {
            btn.innerText = "RESUME SIMULATION";
            btn.classList.remove('btn-stop');
        }
    }

    window.onload = animatedInit;
</script>
</body>
</html>