{
  "case_id": "D2",
  "case_name": "时间停止模拟器",
  "prompt": "生成一个动画，模拟\"如果时间停止会发生什么\"，要求：\n1. 场景：一个房间，有人、光线、声波、飞行的物体\n2. 点击\"停止时间\"按钮后：\n   - 光线停止传播（世界变黑）\n   - 声音冻结（显示声波的固态形状）\n   - 人物无法移动（肌肉需要时间传导）\n   - 空气分子静止（无法呼吸）\n3. 用动画+文字解释每个物理现象\n4. 可调节时间流速（慢动作→暂停→倒流）\n5. 单文件HTML",
  "result": {
    "success": true,
    "content": "这是一个单文件HTML解决方案。它包含了一个基于Canvas的物理模拟引擎，专门用于演示相对论和经典物理中“时间停止”的悖论现象。\n\n### 使用说明：\n1.  将代码保存为 `.html` 文件（例如 `time_stop.html`）。\n2.  在浏览器中打开。\n3.  拖动滑块控制时间流速，或点击“紧急停止时间”按钮观察物理现象。\n\n```html\n<!DOCTYPE html>\n<html lang=\"zh-CN\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <title>时间停止物理模拟器 - Gemini 3.0</title>\n    <style>\n        :root {\n            --primary: #00f3ff;\n            --danger: #ff0055;\n            --bg: #0a0a12;\n            --panel-bg: rgba(16, 20, 30, 0.85);\n        }\n\n        body {\n            margin: 0;\n            overflow: hidden;\n            background-color: var(--bg);\n            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n            color: white;\n            user-select: none;\n        }\n\n        canvas {\n            display: block;\n        }\n\n        #ui-layer {\n            position: absolute;\n            top: 0;\n            left: 0;\n            width: 100%;\n            height: 100%;\n            pointer-events: none;\n            display: flex;\n            flex-direction: column;\n            justify-content: space-between;\n            padding: 20px;\n            box-sizing: border-box;\n        }\n\n        .hud-panel {\n            background: var(--panel-bg);\n            backdrop-filter: blur(10px);\n            border: 1px solid rgba(255, 255, 255, 0.1);\n            border-radius: 12px;\n            padding: 20px;\n            pointer-events: auto;\n            max-width: 400px;\n            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);\n            transition: all 0.3s ease;\n        }\n\n        h1 {\n            margin: 0 0 10px 0;\n            font-size: 1.2rem;\n            text-transform: uppercase;\n            letter-spacing: 2px;\n            color: var(--primary);\n            border-bottom: 1px solid var(--primary);\n            padding-bottom: 5px;\n        }\n\n        .control-group {\n            margin-bottom: 15px;\n        }\n\n        label {\n            display: block;\n            margin-bottom: 5px;\n            font-size: 0.9rem;\n            color: #aaa;\n        }\n\n        input[type=\"range\"] {\n            width: 100%;\n            cursor: pointer;\n            accent-color: var(--primary);\n        }\n\n        .btn {\n            background: var(--danger);\n            color: white;\n            border: none;\n            padding: 12px 20px;\n            border-radius: 6px;\n            font-weight: bold;\n            cursor: pointer;\n            width: 100%;\n            text-transform: uppercase;\n            letter-spacing: 1px;\n            transition: transform 0.1s, background 0.3s;\n            box-shadow: 0 0 15px rgba(255, 0, 85, 0.4);\n        }\n\n        .btn:hover {\n            background: #ff3377;\n        }\n\n        .btn:active {\n            transform: scale(0.98);\n        }\n\n        .btn.active {\n            background: #222;\n            border: 1px solid var(--primary);\n            color: var(--primary);\n            box-shadow: none;\n        }\n\n        #status-display {\n            position: absolute;\n            top: 50%;\n            left: 50%;\n            transform: translate(-50%, -50%);\n            text-align: center;\n            pointer-events: none;\n            opacity: 0;\n            transition: opacity 0.5s;\n        }\n\n        #status-display.visible {\n            opacity: 1;\n        }\n\n        .phenomenon-card {\n            background: rgba(0, 0, 0, 0.8);\n            border-left: 4px solid var(--primary);\n            padding: 15px;\n            margin-bottom: 10px;\n            font-size: 0.9rem;\n            line-height: 1.4;\n        }\n        \n        .phenomenon-title {\n            color: var(--primary);\n            font-weight: bold;\n            margin-bottom: 4px;\n        }\n\n        .warning {\n            color: var(--danger);\n            font-weight: bold;\n        }\n\n        #time-val {\n            font-family: monospace;\n            float: right;\n            color: var(--primary);\n        }\n    </style>\n</head>\n<body>\n\n    <canvas id=\"simCanvas\"></canvas>\n\n    <div id=\"ui-layer\">\n        <div class=\"hud-panel\">\n            <h1>时间控制器</h1>\n            <div class=\"control-group\">\n                <label>时间流速 (Time Dilation) <span id=\"time-val\">1.0x</span></label>\n                <input type=\"range\" id=\"speedSlider\" min=\"-2\" max=\"2\" step=\"0.1\" value=\"1\">\n            </div>\n            <button id=\"stopBtn\" class=\"btn\">紧急停止时间 (STOP)</button>\n            <div style=\"margin-top:10px; font-size:0.8rem; color:#888;\">\n                <input type=\"checkbox\" id=\"godMode\" checked> \n                <label for=\"godMode\" style=\"display:inline;\">开启\"上帝视角\" (否则全黑)</label>\n            </div>\n        </div>\n\n        <div class=\"hud-panel\" id=\"info-panel\">\n            <h1>物理现象解析</h1>\n            <div id=\"phenomena-list\">\n                <div class=\"phenomenon-card\">\n                    <div class=\"phenomenon-title\">正常状态</div>\n                    一切物理法则正常运作。光速恒定，声波传播，布朗运动持续。\n                </div>\n            </div>\n        </div>\n    </div>\n\n    <div id=\"status-display\">\n        <h1 style=\"font-size: 4rem; color: white; text-shadow: 0 0 20px var(--primary);\">TIME FROZEN</h1>\n        <p style=\"color: #ccc;\">t = constant</p>\n    </div>\n\n    <script>\n        const canvas = document.getElementById('simCanvas');\n        const ctx = canvas.getContext('2d');\n        \n        // UI Elements\n        const speedSlider = document.getElementById('speedSlider');\n        const timeVal = document.getElementById('time-val');\n        const stopBtn = document.getElementById('stopBtn');\n        const phenomenaList = document.getElementById('phenomena-list');\n        const statusDisplay = document.getElementById('status-display');\n        const godModeCheckbox = document.getElementById('godMode');\n\n        // Simulation State\n        let width, height;\n        let timeSpeed = 1.0;\n        let isStopped = false;\n        let previousSpeed = 1.0;\n        let lastTime = 0;\n\n        // Entities\n        const airParticles = [];\n        const photons = [];\n        const soundWaves = [];\n        let flyingObject = null;\n        let person = null;\n\n        // Config\n        const AIR_COUNT = 800;\n        const PHOTON_RATE = 2; // Photons per frame\n        \n        class Vector {\n            constructor(x, y) { this.x = x; this.y = y; }\n        }\n\n        // --- Classes ---\n\n        class Person {\n            constructor() {\n                this.x = width * 0.2;\n                this.y = height * 0.7;\n                this.breathPhase = 0;\n                this.pulsePhase = 0;\n            }\n\n            update(dt) {\n                // Breathing and heartbeat only happen if time moves\n                this.breathPhase += dt * 2;\n                this.pulsePhase += dt * 5;\n            }\n\n            draw(ctx) {\n                const breathScale = isStopped ? Math.sin(this.breathPhase) : Math.sin(this.breathPhase);\n                \n                // Body\n                ctx.strokeStyle = \"#fff\";\n                ctx.lineWidth = 4;\n                ctx.beginPath();\n                \n                // Head\n                ctx.arc(this.x, this.y - 60, 20, 0, Math.PI * 2);\n                \n                // Torso (expands with breath)\n                const chestWidth = 20 + (isStopped ? 0 : breathScale * 2); \n                ctx.moveTo(this.x, this.y - 40);\n                ctx.lineTo(this.x, this.y + 30);\n                \n                // Legs\n                ctx.moveTo(this.x, this.y + 30);\n                ctx.lineTo(this.x - 20, this.y + 100);\n                ctx.moveTo(this.x, this.y + 30);\n                ctx.lineTo(this.x + 20, this.y + 100);\n\n                // Arms (frozen mid-motion if stopped)\n                ctx.moveTo(this.x, this.y - 30);\n                ctx.lineTo(this.x - 30, this.y + (isStopped ? 0 : Math.sin(this.breathPhase)*10));\n                ctx.moveTo(this.x, this.y - 30);\n                ctx.lineTo(this.x + 30, this.y + (isStopped ? 0 : Math.cos(this.breathPhase)*10));\n                \n                ctx.stroke();\n\n                // Nervous system / Heart visualization\n                if (!isStopped) {\n                    ctx.fillStyle = `rgba(255, 50, 50, ${Math.max(0, Math.sin(this.pulsePhase))})`;\n                    ctx.beginPath();\n                    ctx.arc(this.x, this.y - 10, 5, 0, Math.PI * 2);\n                    ctx.fill();\n                } else {\n                    // Frozen nerves\n                    ctx.fillStyle = \"#555\";\n                    ctx.beginPath();\n                    ctx.arc(this.x, this.y - 10, 5, 0, Math.PI * 2);\n                    ctx.fill();\n                    \n                    // Text label\n                    ctx.fillStyle = \"white\";\n                    ctx.font = \"12px Arial\";\n                    ctx.fillText(\"神经信号中断\", this.x - 40, this.y - 90);\n                }\n            }\n        }\n\n        class AirParticle {\n            constructor() {\n                this.x = Math.random() * width;\n                this.y = Math.random() * height;\n                this.vx = (Math.random() - 0.5) * 2;\n                this.vy = (Math.random() - 0.5) * 2;\n                this.size = Math.random() * 2 + 1;\n            }\n\n            update(dt) {\n                // Brownian motion simulation\n                this.x += this.vx * dt * 50; // Move based on time speed\n                this.y += this.vy * dt * 50;\n\n                // Wrap around screen\n                if (this.x < 0) this.x = width;\n                if (this.x > width) this.x = 0;\n                if (this.y < 0) this.y = height;\n                if (this.y > height) this.y = 0;\n            }\n\n            draw(ctx) {\n                ctx.fillStyle = isStopped ? \"rgba(100, 100, 100, 0.8)\" : \"rgba(255, 255, 255, 0.2)\";\n                if (isStopped) {\n                    // Draw as little squares to look rigid\n                    ctx.fillRect(this.x, this.y, this.size, this.size);\n                } else {\n                    ctx.beginPath();\n                    ctx.arc(this.x, this.y, this.size/2, 0, Math.PI * 2);\n                    ctx.fill();\n                }\n            }\n        }\n\n        class Photon {\n            constructor() {\n                this.x = width; // Start from right (window/light source)\n                this.y = Math.random() * height * 0.5; // Upper half\n                this.angle = Math.PI + 0.4; // Angle down-left\n                this.speed = 15; // Visual speed representation\n                this.life = 1.0;\n            }\n\n            update(dt) {\n                this.x += Math.cos(this.angle) * this.speed * dt * 60; // Speed dependent on time\n                this.y += Math.sin(this.angle) * this.speed * dt * 60;\n                \n                if (this.x < 0 || this.y > height) this.life = 0;\n            }\n\n            draw(ctx) {\n                if (this.life <= 0) return;\n\n                if (isStopped) {\n                    // Frozen photon particle\n                    ctx.fillStyle = \"#ffff00\";\n                    ctx.beginPath();\n                    ctx.arc(this.x, this.y, 2, 0, Math.PI*2);\n                    ctx.fill();\n                    // Glow\n                    ctx.shadowBlur = 5;\n                    ctx.shadowColor = \"#ffff00\";\n                } else {\n                    // Light streak\n                    ctx.strokeStyle = `rgba(255, 255, 200, 0.6)`;\n                    ctx.lineWidth = 2;\n                    ctx.beginPath();\n                    ctx.moveTo(this.x, this.y);\n                    ctx.lineTo(this.x - Math.cos(this.angle)*20, this.y - Math.sin(this.angle)*20);\n                    ctx.stroke();\n                    ctx.shadowBlur = 0;\n                }\n            }\n        }\n\n        class SoundWave {\n            constructor(sourceX, sourceY) {\n                this.x = sourceX;\n                this.y = sourceY;\n                this.radius = 0;\n                this.opacity = 1;\n            }\n\n            update(dt) {\n                this.radius += dt * 100; // Speed of sound scaled\n                this.opacity -= Math.abs(dt) * 0.5;\n            }\n\n            draw(ctx) {\n                if (this.opacity <= 0) return;\n                \n                ctx.beginPath();\n                ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);\n                \n                if (isStopped) {\n                    // Frozen sound looks like solid ice/glass\n                    ctx.strokeStyle = `rgba(0, 243, 255, 0.8)`;\n                    ctx.lineWidth = 4;\n                    ctx.setLineDash([5, 5]); // Visual effect for \"structure\"\n                } else {\n                    ctx.strokeStyle = `rgba(0, 243, 255, ${this.opacity})`;\n                    ctx.lineWidth = 2;\n                    ctx.setLineDash([]);\n                }\n                \n                ctx.stroke();\n                ctx.setLineDash([]);\n            }\n        }\n\n        class FlyingObject {\n            constructor() {\n                this.x = width * 0.8;\n                this.y = height * 0.8;\n                this.vx = -400;\n                this.vy = -300;\n                this.rotation = 0;\n            }\n\n            update(dt) {\n                this.x += this.vx * dt;\n                this.y += this.vy * dt;\n                this.rotation += dt * 5;\n\n                // Bounce logic\n                if (this.x < 0 || this.x > width) this.vx *= -1;\n                if (this.y < 0 || this.y > height) this.vy *= -1;\n            }\n\n            draw(ctx) {\n                ctx.save();\n                ctx.translate(this.x, this.y);\n                ctx.rotate(this.rotation);\n                \n                ctx.fillStyle = \"#ff0055\";\n                ctx.fillRect(-15, -15, 30, 30);\n                \n                // Motion blur trail\n                if (!isStopped && Math.abs(timeSpeed) > 0.1) {\n                    ctx.fillStyle = \"rgba(255, 0, 85, 0.3)\";\n                    ctx.fillRect(-25, -10, 20, 20);\n                }\n\n                ctx.restore();\n\n                if (isStopped) {\n                    ctx.fillStyle = \"white\";\n                    ctx.font = \"12px Arial\";\n                    ctx.fillText(\"动能冻结\", this.x + 20, this.y);\n                }\n            }\n        }\n\n        // --- Logic ---\n\n        function init() {\n            resize();\n            window.addEventListener('resize', resize);\n            \n            // Initialize objects\n            for(let i=0; i<AIR_COUNT; i++) airParticles.push(new AirParticle());\n            flyingObject = new FlyingObject();\n            person = new Person();\n            \n            // Start Loop\n            requestAnimationFrame(loop);\n        }\n\n        function resize() {\n            width = window.innerWidth;\n            height = window.innerHeight;\n            canvas.width = width;\n            canvas.height = height;\n            if (person) {\n                person.x = width * 0.2;\n                person.y = height * 0.7;\n            }\n        }\n\n        function updatePhysicsText() {\n            let html = \"\";\n            \n            if (isStopped) {\n                html += `\n                <div class=\"phenomenon-card\">\n                    <div class=\"phenomenon-title\">1. 光线 (Light)</div>\n                    <span class=\"warning\">光子停止移动。</span> 实际上，如果没有光子撞击视网膜，世界是绝对黑暗的。这里开启了\"上帝视角\"以显示光子的位置。\n                </div>\n                <div class=\"phenomenon-card\">\n                    <div class=\"phenomenon-title\">2. 声音 (Sound)</div>\n                    声波是介质的振动。时间停止时，空气分子无法传递动能，声波变成了空中的<span class=\"warning\">静止雕塑</span>。\n                </div>\n                <div class=\"phenomenon-card\">\n                    <div class=\"phenomenon-title\">3. 空气 (Air)</div>\n                    空气分子停止热运动，变成了像混凝土一样坚硬的墙。你将<span class=\"warning\">无法呼吸</span>，因为肺部无法推开静止的分子。\n                </div>\n                <div class=\"phenomenon-card\">\n                    <div class=\"phenomenon-title\">4. 身体 (Body)</div>\n                    神经电信号停止传输，肌肉无法收缩。意识也将冻结。\n                </div>\n                `;\n            } else if (timeSpeed < 0) {\n                html += `<div class=\"phenomenon-card\"><div class=\"phenomenon-title\">熵减 (Entropy Reversal)</div>时间倒流，因果律反转。破碎的杯子复原，泼出的水回到桶里。</div>`;\n            } else if (timeSpeed < 0.5) {\n                html += `<div class=\"phenomenon-card\"><div class=\"phenomenon-title\">慢动作 (Slow Motion)</div>大脑处理信息的速度相对于外界变快。常见于肾上腺素飙升的时刻。</div>`;\n            } else {\n                html += `<div class=\"phenomenon-card\"><div class=\"phenomenon-title\">正常物理 (Normal Physics)</div>一切正常。</div>`;\n            }\n            phenomenaList.innerHTML = html;\n        }\n\n        function loop(timestamp) {\n            // Calculate Delta Time\n            let rawDt = (timestamp - lastTime) / 1000;\n            lastTime = timestamp;\n            \n            // Cap dt to prevent huge jumps if tab is inactive\n            if (rawDt > 0.1) rawDt = 0.1;\n\n            // Apply Time Dilation\n            let simDt = rawDt * timeSpeed;\n\n            // --- Update ---\n            \n            // Spawn Photons\n            if (!isStopped || (isStopped && Math.random() > 0.99)) { // Rarely spawn in stop mode just to fill gaps? No, stop means stop.\n                 if (!isStopped) {\n                     for(let i=0; i<PHOTON_RATE; i++) photons.push(new Photon());\n                 }\n            }\n\n            // Spawn Sound (Heartbeat or Ambient)\n            if (!isStopped && Math.floor(timestamp / 500) > Math.floor((timestamp - rawDt*1000) / 500)) {\n                // Every 0.5s real time (adjusted by speed visually later), emit wave from person\n                // Actually, let's emit based on simulation time\n            }\n            // Random ambient sound\n            if (!isStopped && Math.random() < 0.02 * Math.abs(timeSpeed)) {\n                soundWaves.push(new SoundWave(width*0.8, height*0.2)); // Sound from \"window\" area\n            }\n\n\n            // Update Entities\n            person.update(simDt);\n            flyingObject.update(simDt);\n            \n            airParticles.forEach(p => p.update(simDt));\n            \n            for (let i = photons.length - 1; i >= 0; i--) {\n                photons[i].update(simDt);\n                if (photons[i].life <= 0) photons.splice(i, 1);\n            }\n\n            for (let i = soundWaves.length - 1; i >= 0; i--) {\n                soundWaves[i].update(simDt);\n                if (soundWaves[i].opacity <= 0 || soundWaves[i].radius > width) soundWaves.splice(i, 1);\n            }\n\n            // --- Draw ---\n\n            // Clear Background\n            ctx.fillStyle = varCSS('--bg');\n            ctx.clearRect(0, 0, width, height);\n\n            // Draw Light Source (Window/Lamp area)\n            const grad = ctx.createRadialGradient(width, 0, 0, width, 0, 400);\n            if (isStopped) {\n                grad.addColorStop(0, \"rgba(50, 50, 50, 1)\");\n                grad.addColorStop(1, \"rgba(0, 0, 0, 0)\");\n            } else {\n                grad.addColorStop(0, \"rgba(255, 255, 200, 0.3)\");\n                grad.addColorStop(1, \"rgba(0, 0, 0, 0)\");\n            }\n            ctx.fillStyle = grad;\n            ctx.fillRect(0, 0, width, height);\n\n\n            // Render Layers\n            \n            // 1. Air (Background)\n            airParticles.forEach(p => p.draw(ctx));\n\n            // 2. Photons\n            photons.forEach(p => p.draw(ctx));\n\n            // 3. Objects\n            person.draw(ctx);\n            flyingObject.draw(ctx);\n\n            // 4. Sound Waves (Draw last to be on top)\n            soundWaves.forEach(p => p.draw(ctx));\n\n\n            // --- Visual Effects for Time Stop ---\n            if (isStopped) {\n                if (!godModeCheckbox.checked) {\n                    // Realistic Physics: Pitch Black\n                    ctx.fillStyle = \"black\";\n                    ctx.fillRect(0, 0, width, height);\n                    ctx.fillStyle = \"#333\";\n                    ctx.font = \"20px Arial\";\n                    ctx.textAlign = \"center\";\n                    ctx.fillText(\"物理现实：没有光子移动 = 绝对黑暗\", width/2, height/2 + 50);\n                } else {\n                    // God Mode: Dimmed overlay + Vignette\n                    const radial = ctx.createRadialGradient(width/2, height/2, height/3, width/2, height/2, height);\n                    radial.addColorStop(0, \"rgba(0,0,0,0.2)\");\n                    radial.addColorStop(1, \"rgba(0,0,0,0.9)\");\n                    ctx.fillStyle = radial;\n                    ctx.fillRect(0, 0, width, height);\n                    \n                    // Blue tint to signify \"Cold/Frozen\"\n                    ctx.fillStyle = \"rgba(0, 20, 40, 0.3)\";\n                    ctx.fillRect(0, 0, width, height);\n                }\n            }\n\n            requestAnimationFrame(loop);\n        }\n\n        // Helpers\n        function varCSS(name) {\n            return getComputedStyle(document.documentElement).getPropertyValue(name).trim();\n        }\n\n        // Event Listeners\n        speedSlider.addEventListener('input', (e) => {\n            if (isStopped) toggleTimeStop(); // Auto resume if slider moved\n            timeSpeed = parseFloat(e.target.value);\n            timeVal.innerText = timeSpeed.toFixed(1) + 'x';\n            updatePhysicsText();\n        });\n\n        stopBtn.addEventListener('click', toggleTimeStop);\n\n        function toggleTimeStop() {\n            isStopped = !isStopped;\n            \n            if (isStopped) {\n                previousSpeed = parseFloat(speedSlider.value);\n                timeSpeed = 0;\n                speedSlider.value = 0;\n                timeVal.innerText = \"0.0x\";\n                \n                stopBtn.innerText = \"恢复时间 (RESUME)\";\n                stopBtn.classList.add('active');\n                statusDisplay.classList.add('visible');\n                \n                // Freeze Sound Waves visually\n                soundWaves.forEach(w => w.opacity = 0.8); \n\n            } else {\n                timeSpeed = previousSpeed === 0 ? 1 : previousSpeed; // Avoid getting stuck at 0\n                speedSlider.value = timeSpeed;\n                timeVal.innerText = timeSpeed.toFixed(1) + 'x';\n                \n                stopBtn.innerText = \"紧急停止时间 (STOP)\";\n                stopBtn.classList.remove('active');\n                statusDisplay.classList.remove('visible');\n            }\n            updatePhysicsText();\n        }\n\n        // Start\n        init();\n\n    </script>\n</body>\n</html>\n```",
    "model": "gemini-3-pro-preview",
    "usage": {
      "prompt_tokens": 158,
      "completion_tokens": 8241,
      "total_tokens": 8399
    },
    "timestamp": "2025-11-19 13:27:23"
  },
  "needs_screenshot": true,
  "needs_manual_test": true
}