healing-visual-lab/time-particle-clock/time-particle-clock.html at main · shasha1108/healing-visual-lab · GitHub

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<!DOCTYPE html>

<!--
  Title: Time Particle Clock · 时间流转 - 粒子时钟
  Tech: Three.js WebGL, custom ShaderMaterial, 200K particle system, analog clock algorithm, Web Audio tick synthesis, mouse-drag physics
  Keywords: particle system, three.js, web audio, webgl
  Features: 时间是流动的粒子——拖拽加速，松开即止，每一秒都有声音
  Render: Three.js WebGL r128
  Audio: yes
  Touch: no
  Particles: 200K
  Standalone: yes, single HTML file, 1 CDN (Three.js r128)
  Repo: https://github.com/shasha1108/healing-visual-lab
-->
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>时间流转 - 粒子时钟</title>
    <style>
        body {
            margin: 0;
            overflow: hidden;
            background-color: #050508; /* 更深邃的宇宙夜空黑 */
            background: radial-gradient(circle at 50% 50%, #111822 0%, #020205 100%);
            font-family: 'Georgia', serif;
            user-select: none;
        }
        canvas { display: block; }

        #ui {
            position: absolute;
            bottom: 40px; width: 100%;
            text-align: center;
            color: rgba(200, 220, 255, 0.6);
            font-size: 14px;
            letter-spacing: 6px;
            pointer-events: none;
            z-index: 10;
            text-transform: uppercase;
        }

        #hint {
            position: absolute;
            top: 40px; width: 100%;
            text-align: center;
            color: rgba(212, 175, 55, 0.7);
            font-size: 12px;
            letter-spacing: 4px;
            pointer-events: none;
            z-index: 10;
            opacity: 0.8;
            transition: opacity 1s;
        }

        /* 宣纸/星尘噪点滤镜，保留质感 */
        .noise-overlay {
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            pointer-events: none;
            z-index: 5;
            opacity: 0.08;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
        }
    </style>
</head>
<body>
    <div class="noise-overlay"></div>
    <div id="hint">CLICK & DRAG TO MANIPULATE TIME ( SOUND ON )</div>

    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>

    <!-- Shader: 柔和发光粒子 -->
    <script type="x-shader/x-vertex" id="vertexShader">
        attribute float size;
        attribute vec3 customColor;
        varying vec3 vColor;
        void main() {
            vColor = customColor;
            vec4 mvPosition = modelViewMatrix * vec4(position, 1.0);
            // 距离摄像机越近，粒子越大
            gl_PointSize = size * (350.0 / -mvPosition.z);
            gl_Position = projectionMatrix * mvPosition;
        }
    </script>

    <script type="x-shader/x-fragment" id="fragmentShader">
        varying vec3 vColor;
        void main() {
            vec2 uv = gl_PointCoord - 0.5;
            float dist = length(uv);
            if (dist > 0.5) discard;

            // 柔和边缘，中心高亮
            float alpha = 1.0 - smoothstep(0.2, 0.5, dist);
            gl_FragColor = vec4(vColor, alpha);
        }
    </script>

    <script>
        // --- Web Audio API (合成滴答声) ---
        let audioCtx;
        let audioInitialized = false;

        function initAudio() {
            if (!audioInitialized) {
                audioCtx = new (window.AudioContext || window.webkitAudioContext)();
                audioInitialized = true;
                document.getElementById('hint').style.opacity = '0.2'; // 弱化提示
            }
            if (audioCtx.state === 'suspended') audioCtx.resume();
        }

        // 播放合成音效
        function playTick(isTock, fastForwardRate) {
            if (!audioCtx || audioCtx.state !== 'running') return;
            const osc = audioCtx.createOscillator();
            const gainNode = audioCtx.createGain();
            osc.connect(gainNode);
            gainNode.connect(audioCtx.destination);

            // 如果处于时间快进/倒流状态，声音变得尖锐且急促；正常状态下是沉稳的滴答声
            let isFast = fastForwardRate > 1.5;
            osc.type = isFast ? 'triangle' : 'sine';

            let baseFreq = isTock ? 700 : 1000;
            if (isFast) baseFreq = 1500 + Math.min(fastForwardRate * 10, 1000); // 速度越快音调越高

            osc.frequency.setValueAtTime(baseFreq, audioCtx.currentTime);
            osc.frequency.exponentialRampToValueAtTime(0.01, audioCtx.currentTime + 0.05);

            gainNode.gain.setValueAtTime(isFast ? 0.05 : 0.3, audioCtx.currentTime); // 快进时声音变小，避免吵闹
            gainNode.gain.exponentialRampToValueAtTime(0.001, audioCtx.currentTime + 0.05);

            osc.start(audioCtx.currentTime);
            osc.stop(audioCtx.currentTime + 0.05);
        }

        // --- Three.js 初始化 ---
        const scene = new THREE.Scene();
        const camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 2000);
        camera.position.set(0, 0, 110);

        const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
        renderer.setSize(window.innerWidth, window.innerHeight);
        renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
        document.body.appendChild(renderer.domElement);

        // --- 粒子时钟系统 ---
        class ParticleClock {
            constructor() {
                this.count = 200000;
                this.geo = new THREE.BufferGeometry();

                const pos = new Float32Array(this.count * 3);
                const col = new Float32Array(this.count * 3);
                const size = new Float32Array(this.count);

                this.particles = [];

                for(let i = 0; i < this.count; i++) {
                    let type, r, theta, cr, cg, cb, s, k;
                    let rand = Math.random();

                    if (rand < 0.45) {
                        // 1. 表盘光环与刻度 (45%)
                        type = 0;
                        k = 0.08; // 表盘引力很强，不易打散

                        if (Math.random() < 0.12) {
                            // 时钟刻度 (12个点)
                            let tickIndex = Math.floor(Math.random() * 12);
                            theta = tickIndex * (Math.PI / 6) + (Math.random() - 0.5) * 0.03;
                            r = 30 + Math.random() * 6;
                            cr = 1.0; cg = 0.85; cb = 0.5; // 明亮暗金
                            s = Math.random() * 1.5 + 0.8;
                        } else {
                            // 边缘散发的光环
                            theta = Math.random() * Math.PI * 2;
                            r = 34 + Math.random() * 2.5;
                            cr = 0.6; cg = 0.5; cb = 0.3; // 偏暗的星空金
                            s = Math.random() * 1.0 + 0.3;
                        }
                    }
                    else if (rand < 0.70) {
                        // 2. 分针 (25%)
                        type = 2;
                        k = 0.03; // 引力适中，拖拽有流体感
                        r = Math.random() * 26;
                        // 越往外越尖锐的柳叶形
                        let width = (26 - r) * 0.012;
                        theta = (Math.random() - 0.5) * width;
                        cr = 0.2; cg = 0.8; cb = 1.0; // 冰蓝色
                        s = Math.random() * 1.2 + 0.5;
                    }
                    else if (rand < 0.90) {
                        // 3. 时针 (20%)
                        type = 1;
                        k = 0.02; // 引力较弱，显得厚重
                        r = Math.random() * 16;
                        let width = (16 - r) * 0.025;
                        theta = (Math.random() - 0.5) * width;
                        cr = 0.4; cg = 0.6; cb = 1.0; // 深一点的幽蓝色
                        s = Math.random() * 1.6 + 0.8;
                    }
                    else {
                        // 4. 秒针 (10%)
                        type = 3;
                        k = 0.06; // 引力强，走动干脆利落
                        r = Math.random() * 32;
                        // 极细的线，带一点点尾部配重
                        if (Math.random() < 0.15) r = -Math.random() * 6;
                        let width = (32 - Math.abs(r)) * 0.003;
                        theta = (Math.random() - 0.5) * width;
                        cr = 1.0; cg = 0.2; cb = 0.1; // 亮赤红色
                        s = Math.random() * 2.0 + 0.8; // 最大最亮
                    }

                    // 初始位置设定在原点，稍后在update中展开
                    pos[i*3] = 0; pos[i*3+1] = 0; pos[i*3+2] = (Math.random()-0.5)*3;
                    col[i*3] = cr; col[i*3+1] = cg; col[i*3+2] = cb;
                    size[i] = s;

                    this.particles.push({
                        r: r, theta: theta, type: type, k: k,
                        x: pos[i*3], y: pos[i*3+1], z: pos[i*3+2],
                        vx: 0, vy: 0, vz: 0
                    });
                }

                this.geo.setAttribute('position', new THREE.BufferAttribute(pos, 3));
                this.geo.setAttribute('customColor', new THREE.BufferAttribute(col, 3));
                this.geo.setAttribute('size', new THREE.BufferAttribute(size, 1));

                const mat = new THREE.ShaderMaterial({
                    vertexShader: document.getElementById('vertexShader').textContent,
                    fragmentShader: document.getElementById('fragmentShader').textContent,
                    transparent: true,
                    depthWrite: false,
                    blending: THREE.AdditiveBlending // 叠加发光
                });

                this.mesh = new THREE.Points(this.geo, mat);
                scene.add(this.mesh);
            }

            update(time, mouse, timeState) {
                const positions = this.geo.attributes.position.array;

                // 1. 获取包含时间偏差的虚拟时间
                let currentSeconds = timeState.virtualTime;

                // 计算当前时间的三针角度 (0度在三点钟方向，12点钟是 PI/2)
                const PI2 = Math.PI * 2;
                // 秒针平滑扫过
                const secAngle = Math.PI/2 - (currentSeconds % 60) / 60 * PI2;
                // 分针平滑
                const minAngle = Math.PI/2 - ((currentSeconds / 60) % 60) / 60 * PI2;
                // 时针平滑
                const hourAngle = Math.PI/2 - ((currentSeconds / 3600) % 12) / 12 * PI2;

                // 2. 计算速度倍率 (用于扰乱粒子)
                const speedMultiplier = Math.min(Math.abs(timeState.timeVelocity) / 2, 8);

                for(let i=0; i<this.count; i++) {
                    const p = this.particles[i];

                    // 确定该粒子的目标角度
                    let targetAngle = p.theta;
                    if (p.type === 1) targetAngle += hourAngle;
                    else if (p.type === 2) targetAngle += minAngle;
                    else if (p.type === 3) targetAngle += secAngle;

                    // 计算目标坐标
                    let tx = p.r * Math.cos(targetAngle);
                    let ty = p.r * Math.sin(targetAngle);
                    let tz = 0;

                    // 扰动噪音 (加入时间流动感)
                    const scale = 0.08;
                    const noiseX = Math.sin(p.y * scale + time) * 0.5;
                    const noiseY = Math.cos(p.x * scale + time) * 0.5;

                    // 动态活跃度：快进时间时，指针粒子会产生剧烈的流体消散感
                    let activity = (p.type === 0) ? 0.005 : 0.02;
                    activity *= (1 + speedMultiplier);

                    p.vx += noiseX * activity;
                    p.vy += noiseY * activity;

                    // 鼠标物理推开逻辑 (保留原版的太极搅动感)
                    if(mouse.active) {
                        const dx = p.x - mouse.x;
                        const dy = p.y - mouse.y;
                        const d2 = dx*dx + dy*dy;
                        if(d2 < 1200) {
                            const force = (34 - Math.sqrt(d2)) * 0.025;
                            p.vx += dx * force;
                            p.vy += dy * force;
                        }
                    }

                    // 归位力 (弹簧物理)
                    // 当时间被疯狂拨动时，tx和ty会快速旋转，粒子会被弹簧力拖拽，形成绚丽尾迹
                    p.vx += (tx - p.x) * p.k;
                    p.vy += (ty - p.y) * p.k;
                    p.vz += (tz - p.z) * p.k;

                    // 阻力/摩擦力
                    p.vx *= 0.93;
                    p.vy *= 0.93;
                    p.vz *= 0.93;

                    // 更新坐标
                    p.x += p.vx;
                    p.y += p.vy;
                    p.z += p.vz;

                    positions[i*3] = p.x;
                    positions[i*3+1] = p.y;
                    positions[i*3+2] = p.z;
                }

                this.geo.attributes.position.needsUpdate = true;
            }
        }

        // --- 核心逻辑与事件 ---
        const clockSys = new ParticleClock();
        const clock = new THREE.Clock();

        // 交互状态
        const mouse = { x: 0, y: 0, active: false };
        const dragState = {
            isDragging: false,
            lastScreenX: 0,
            offsetSeconds: 0 // 时间偏差量
        };

        // 时间状态管理器
        const timeState = {
            virtualTime: 0,
            timeVelocity: 0,
            lastIntSecond: -1
        };

        // 鼠标/触摸事件追踪
        window.addEventListener('mousedown', (e) => {
            initAudio(); // 用户首次点击激活声音
            dragState.isDragging = true;
            dragState.lastScreenX = e.clientX;
        });

        window.addEventListener('mousemove', (e) => {
            // 物理搅动坐标映射
            const vec = new THREE.Vector3(
                (e.clientX / window.innerWidth) * 2 - 1,
                -(e.clientY / window.innerHeight) * 2 + 1, 0.5
            );
            vec.unproject(camera);
            vec.sub(camera.position).normalize();
            const dist = -camera.position.z / vec.z;
            const pos = camera.position.clone().add(vec.multiplyScalar(dist));
            mouse.x = pos.x; mouse.y = pos.y; mouse.active = true;

            // 拖拽拨动时间逻辑
            if (dragState.isDragging) {
                const deltaX = e.clientX - dragState.lastScreenX;
                dragState.offsetSeconds += deltaX * 15; // 灵敏度：1像素 = 15秒
                dragState.lastScreenX = e.clientX;
            }
        });

        window.addEventListener('mouseup', () => dragState.isDragging = false);
        window.addEventListener('mouseleave', () => dragState.isDragging = false);

        let timer;
        window.addEventListener('mousemove', () => {
            clearTimeout(timer);
            timer = setTimeout(() => { mouse.active = false; }, 100);
        });

        // 动画主循环
        function animate() {
            requestAnimationFrame(animate);
            const time = clock.getElapsedTime();

            // 1. 时间逻辑更新
            const realSeconds = Date.now() / 1000;

            // 如果松开鼠标，时间偏差以弹性阻尼平滑归零 (视觉上的“时光复原”)
            if (!dragState.isDragging) {
                dragState.offsetSeconds *= 0.94;
            }

            const currentVirtualTime = realSeconds + dragState.offsetSeconds;
            timeState.timeVelocity = currentVirtualTime - timeState.virtualTime;
            timeState.virtualTime = currentVirtualTime;

            // 2. 音效触发逻辑
            const currentIntSecond = Math.floor(currentVirtualTime);
            if (currentIntSecond !== timeState.lastIntSecond) {
                const diff = Math.abs(currentIntSecond - timeState.lastIntSecond);
                if (diff > 0) {
                    const isTock = currentIntSecond % 2 === 0;
                    playTick(isTock, diff); // 传入速度，如果是快进，声音会变化
                }
                timeState.lastIntSecond = currentIntSecond;
            }

            // 3. 渲染
            clockSys.update(time, mouse, timeState);
            renderer.render(scene, camera);
        }
        animate();

        window.addEventListener('resize', () => {
            camera.aspect = window.innerWidth / window.innerHeight;
            camera.updateProjectionMatrix();
            renderer.setSize(window.innerWidth, window.innerHeight);
        });

    </script>
</body>
</html>