Digital 3D AI Teacher

Ask any educational question and get an AI-powered response

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Realistic 3D Teacher with advanced facial expressions

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\n 👩‍🏫\n

Hello! I'm your AI teacher. Ask me any educational question, and I'll do my best to help you learn!

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\n Thinking\n .\n .\n .\n

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\n \n \n \n\n",[],[67,99],"df4566f6-3308-11f0-a923-569c3dd06744","app.js","2aa7eb48-3307-11f0-9743-569c3dd06744",22,["D",1747477364702],8,"script","// Import Three.js from the global scope\nconst THREE = window.THREE;\n\n// Initialize project info\nconst projectInfo = window.__PROJECT_INFO__ || { url: \"#\" };\ndocument.getElementById(\"view-source\").href = projectInfo.url;\n\n// DOM Elements\nconst questionForm = document.getElementById(\"question-form\");\nconst questionInput = document.getElementById(\"question-input\");\nconst chatMessages = document.getElementById(\"chat-messages\");\nconst thinkingIndicator = document.getElementById(\"thinking\");\nconst avatarContainer = document.getElementById(\"avatar-container\");\nconst avatarLoading = document.getElementById(\"avatar-loading\");\n\n// 3D Scene Variables\nlet scene, camera, renderer, model, mixer, clock;\nlet isAvatarTalking = false;\nlet animationTimeout;\nlet facialFeatures = {}; // Store facial features for animation\nlet headModel, eyesMaterial;\n\n// Initialize 3D Scene\ninitScene();\n\n// Store conversation history\nlet chatHistory = [];\n\n// Event Listeners\nquestionForm.addEventListener(\"submit\", handleQuestionSubmit);\n\n// Functions\nasync function handleQuestionSubmit(e) {\n e.preventDefault();\n \n const question = questionInput.value.trim();\n if (!question) return;\n \n // Add user message to chat\n addMessageToChat(\"user\", question);\n \n // Clear input\n questionInput.value = \"\";\n \n // Show thinking indicator\n thinkingIndicator.classList.remove(\"hidden\");\n \n try {\n // Send question to API with conversation history\n const response = await fetch(\"/api/ask\", {\n method: \"POST\",\n headers: {\n \"Content-Type\": \"application/json\",\n },\n body: JSON.stringify({ \n question,\n history: chatHistory\n }),\n });\n \n if (!response.ok) {\n throw new Error(\"Failed to get response\");\n }\n \n const data = await response.json();\n \n // Hide thinking indicator\n thinkingIndicator.classList.add(\"hidden\");\n \n // Add AI response to chat\n addMessageToChat(\"teacher\", data.answer);\n \n // Update conversation history\n chatHistory = data.history || [];\n \n // Animate the avatar talking\n animateAvatarTalking();\n } catch (error) {\n console.error(\"Error:\", error);\n thinkingIndicator.classList.add(\"hidden\");\n addMessageToChat(\"teacher\", \"Sorry, I encountered an error while processing your question. Please try again.\");\n }\n}\n\nfunction addMessageToChat(role, text) {\n const messageDiv = document.createElement(\"div\");\n messageDiv.className = `chat-message ${role}`;\n \n const avatarEmoji = role === \"teacher\" ? \"👩‍🏫\" : \"👤\";\n \n // Simple markdown parsing for teacher responses\n let formattedText = text;\n if (role === \"teacher\") {\n // Convert markdown to HTML (basic implementation)\n // Bold text\n formattedText = formattedText.replace(/\\*\\*(.*?)\\*\\*/g, '$1');\n // Italic text\n formattedText = formattedText.replace(/\\*(.*?)\\*/g, '$1');\n // Headers\n formattedText = formattedText.replace(/^### (.*?)$/gm, '

$1

');\n formattedText = formattedText.replace(/^## (.*?)$/gm, '

$1

');\n formattedText = formattedText.replace(/^# (.*?)$/gm, '

$1

');\n // Lists\n formattedText = formattedText.replace(/^- (.*?)$/gm, '

');\n formattedText = formattedText.replace(/(

.*?<\\/li>)/gs, '

$1');\n // Code blocks\n formattedText = formattedText.replace(/`(.*?)`/g, '$1');\n // Line breaks\n formattedText = formattedText.replace(/\\n/g, '
');\n }\n \n messageDiv.innerHTML = `\n

\n ${avatarEmoji}\n

\n ${formattedText}\n

\n `;\n \n chatMessages.appendChild(messageDiv);\n \n // Scroll to bottom\n chatMessages.scrollTop = chatMessages.scrollHeight;\n}\n\nfunction initScene() {\n // Create scene with improved background\n scene = new THREE.Scene();\n scene.background = new THREE.Color(0xe8f4f8); // Softer blue-tinted background\n \n // Create camera with better positioning\n camera = new THREE.PerspectiveCamera(\n 40, // Narrower FOV for less distortion\n avatarContainer.clientWidth / avatarContainer.clientHeight,\n 0.1,\n 1000\n );\n camera.position.set(0, 1.6, 3.5); // Better framing of the head\n camera.lookAt(0, 1.2, 0);\n \n // Create renderer with enhanced settings\n renderer = new THREE.WebGLRenderer({ \n antialias: true,\n alpha: true,\n powerPreference: \"high-performance\"\n });\n renderer.setSize(avatarContainer.clientWidth, avatarContainer.clientHeight);\n renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2)); // Cap pixel ratio for performance\n renderer.shadowMap.enabled = true;\n renderer.shadowMap.type = THREE.PCFSoftShadowMap; // Softer shadows\n renderer.outputEncoding = THREE.sRGBEncoding; // Better color reproduction\n renderer.toneMapping = THREE.ACESFilmicToneMapping; // Cinematic tone mapping\n renderer.toneMappingExposure = 1.2; // Slightly brighter\n \n // Remove loading indicator and append renderer\n avatarLoading.remove();\n avatarContainer.appendChild(renderer.domElement);\n \n // Create environment map for realistic reflections\n const cubeTextureLoader = new THREE.CubeTextureLoader();\n const environmentMap = cubeTextureLoader.load([\n 'https://threejs.org/examples/textures/cube/Park2/posx.jpg',\n 'https://threejs.org/examples/textures/cube/Park2/negx.jpg',\n 'https://threejs.org/examples/textures/cube/Park2/posy.jpg',\n 'https://threejs.org/examples/textures/cube/Park2/negy.jpg',\n 'https://threejs.org/examples/textures/cube/Park2/posz.jpg',\n 'https://threejs.org/examples/textures/cube/Park2/negz.jpg'\n ]);\n scene.environment = environmentMap;\n \n // Enhanced lighting setup for more realistic appearance\n // Ambient light for base illumination\n const ambientLight = new THREE.AmbientLight(0xffffff, 0.4);\n scene.add(ambientLight);\n \n // Main key light (simulates window light)\n const keyLight = new THREE.DirectionalLight(0xffffeb, 1.2); // Slightly warm\n keyLight.position.set(2, 2, 2);\n keyLight.castShadow = true;\n keyLight.shadow.mapSize.width = 1024;\n keyLight.shadow.mapSize.height = 1024;\n keyLight.shadow.camera.near = 0.5;\n keyLight.shadow.camera.far = 10;\n keyLight.shadow.bias = -0.0001;\n scene.add(keyLight);\n \n // Fill light (softer light from opposite side)\n const fillLight = new THREE.DirectionalLight(0xe6f0ff, 0.7); // Slightly cool\n fillLight.position.set(-2, 1, 1);\n scene.add(fillLight);\n \n // Rim light (edge highlight from behind)\n const rimLight = new THREE.DirectionalLight(0xffffff, 0.6);\n rimLight.position.set(0, 2, -3);\n scene.add(rimLight);\n \n // Create realistic avatar\n createRealisticAvatar();\n \n // Initialize animation clock\n clock = new THREE.Clock();\n \n // Start animation loop\n animate();\n \n // Handle window resize\n window.addEventListener(\"resize\", onWindowResize);\n}\n\nfunction createRealisticAvatar() {\n // Create a group to hold the avatar parts\n model = new THREE.Group();\n \n // Create a more realistic head using subdivision\n const headGeometry = new THREE.SphereGeometry(1, 64, 64); // Higher poly count\n \n // Create realistic skin material with subsurface scattering effect\n const headMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0xffe0c0, // Base skin tone\n roughness: 0.3, // Slightly glossy skin\n metalness: 0.0, // Non-metallic\n clearcoat: 0.5, // Subtle clearcoat for realism\n clearcoatRoughness: 0.4,\n envMapIntensity: 0.3, // Subtle environment reflections\n sheen: 0.2, // Subtle sheen\n sheenRoughness: 0.5,\n sheenColor: 0xffe0c0, // Matching sheen color\n transmission: 0.05, // Slight translucency for skin\n ior: 1.4 // Index of refraction for skin\n });\n \n headModel = new THREE.Mesh(headGeometry, headMaterial);\n // Slightly elongate the head for more realistic proportions\n headModel.scale.set(0.9, 1.05, 0.9);\n model.add(headModel);\n \n // Create more realistic eyes\n const eyeGeometry = new THREE.SphereGeometry(0.15, 32, 32);\n \n // Create eye white material\n const eyeWhiteMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0xffffff,\n roughness: 0.1,\n metalness: 0.0,\n clearcoat: 0.8,\n transmission: 0.1,\n ior: 1.4\n });\n \n // Create iris material with depth\n eyesMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0x3a8ab4, // Blue eyes\n roughness: 0.1,\n metalness: 0.1,\n clearcoat: 0.9,\n clearcoatRoughness: 0.1,\n transmission: 0.05,\n ior: 1.4\n });\n \n // Create pupil material (black)\n const pupilMaterial = new THREE.MeshBasicMaterial({ color: 0x000000 });\n \n // Left eye group\n const leftEyeGroup = new THREE.Group();\n leftEyeGroup.position.set(-0.3, 0.15, 0.85);\n \n // Eye white\n const leftEyeWhite = new THREE.Mesh(eyeGeometry, eyeWhiteMaterial);\n leftEyeGroup.add(leftEyeWhite);\n \n // Iris (slightly smaller and protruding)\n const leftIrisGeometry = new THREE.SphereGeometry(0.08, 32, 32);\n const leftIris = new THREE.Mesh(leftIrisGeometry, eyesMaterial);\n leftIris.position.z = 0.1;\n leftIris.name = \"leftIris\";\n leftEyeGroup.add(leftIris);\n \n // Pupil (even smaller and more protruding)\n const leftPupilGeometry = new THREE.SphereGeometry(0.04, 16, 16);\n const leftPupil = new THREE.Mesh(leftPupilGeometry, pupilMaterial);\n leftPupil.position.z = 0.12;\n leftPupil.name = \"leftPupil\";\n leftEyeGroup.add(leftPupil);\n \n // Right eye (same structure)\n const rightEyeGroup = new THREE.Group();\n rightEyeGroup.position.set(0.3, 0.15, 0.85);\n \n const rightEyeWhite = new THREE.Mesh(eyeGeometry, eyeWhiteMaterial);\n rightEyeGroup.add(rightEyeWhite);\n \n const rightIrisGeometry = new THREE.SphereGeometry(0.08, 32, 32);\n const rightIris = new THREE.Mesh(rightIrisGeometry, eyesMaterial);\n rightIris.position.z = 0.1;\n rightIris.name = \"rightIris\";\n rightEyeGroup.add(rightIris);\n \n const rightPupilGeometry = new THREE.SphereGeometry(0.04, 16, 16);\n const rightPupil = new THREE.Mesh(rightPupilGeometry, pupilMaterial);\n rightPupil.position.z = 0.12;\n rightPupil.name = \"rightPupil\";\n rightEyeGroup.add(rightPupil);\n \n // Add eyes to model\n model.add(leftEyeGroup);\n model.add(rightEyeGroup);\n \n // Store eye references for animation\n facialFeatures.leftEye = leftEyeGroup;\n facialFeatures.rightEye = rightEyeGroup;\n facialFeatures.leftIris = leftIris;\n facialFeatures.rightIris = rightIris;\n facialFeatures.leftPupil = leftPupil;\n facialFeatures.rightPupil = rightPupil;\n \n // Create realistic eyebrows\n const leftEyebrowGeometry = new THREE.BoxGeometry(0.25, 0.05, 0.05);\n const eyebrowMaterial = new THREE.MeshStandardMaterial({ \n color: 0x5a3825, // Dark brown\n roughness: 1.0\n });\n \n const leftEyebrow = new THREE.Mesh(leftEyebrowGeometry, eyebrowMaterial);\n leftEyebrow.position.set(-0.3, 0.35, 0.85);\n leftEyebrow.rotation.z = -0.1; // Slight angle\n leftEyebrow.name = \"leftEyebrow\";\n model.add(leftEyebrow);\n \n const rightEyebrowGeometry = new THREE.BoxGeometry(0.25, 0.05, 0.05);\n const rightEyebrow = new THREE.Mesh(rightEyebrowGeometry, eyebrowMaterial);\n rightEyebrow.position.set(0.3, 0.35, 0.85);\n rightEyebrow.rotation.z = 0.1; // Slight angle\n rightEyebrow.name = \"rightEyebrow\";\n model.add(rightEyebrow);\n \n facialFeatures.leftEyebrow = leftEyebrow;\n facialFeatures.rightEyebrow = rightEyebrow;\n \n // Create a more realistic mouth with lips\n const lipMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0xd5756c, // Natural lip color\n roughness: 0.3,\n metalness: 0.0,\n clearcoat: 0.7,\n transmission: 0.1\n });\n \n // Upper lip\n const upperLipGeometry = new THREE.TorusGeometry(0.2, 0.05, 16, 32, Math.PI);\n const upperLip = new THREE.Mesh(upperLipGeometry, lipMaterial);\n upperLip.rotation.x = Math.PI;\n upperLip.position.set(0, -0.4, 0.9);\n upperLip.name = \"upperLip\";\n model.add(upperLip);\n \n // Lower lip\n const lowerLipGeometry = new THREE.TorusGeometry(0.2, 0.05, 16, 32, Math.PI);\n const lowerLip = new THREE.Mesh(lowerLipGeometry, lipMaterial);\n lowerLip.position.set(0, -0.5, 0.9);\n lowerLip.name = \"lowerLip\";\n model.add(lowerLip);\n \n facialFeatures.upperLip = upperLip;\n facialFeatures.lowerLip = lowerLip;\n \n // Create a nose\n const noseBaseGeometry = new THREE.SphereGeometry(0.12, 16, 16);\n const noseMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0xffdbbc, // Slightly darker than skin\n roughness: 0.4,\n metalness: 0.0,\n clearcoat: 0.3\n });\n \n const noseBase = new THREE.Mesh(noseBaseGeometry, noseMaterial);\n noseBase.position.set(0, -0.1, 1);\n noseBase.scale.set(1, 1.1, 1);\n model.add(noseBase);\n \n // Nose bridge\n const noseBridgeGeometry = new THREE.BoxGeometry(0.08, 0.2, 0.1);\n const noseBridge = new THREE.Mesh(noseBridgeGeometry, noseMaterial);\n noseBridge.position.set(0, 0.05, 0.95);\n model.add(noseBridge);\n \n // Add glasses with more realistic materials\n const glassesFrameMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0x222222,\n roughness: 0.2,\n metalness: 0.8,\n clearcoat: 0.9\n });\n \n const glassLensMaterial = new THREE.MeshPhysicalMaterial({\n color: 0xffffff,\n roughness: 0.1,\n metalness: 0.0,\n transmission: 0.9, // Highly transparent\n opacity: 0.2,\n transparent: true,\n ior: 1.5 // Glass IOR\n });\n \n // Left glasses frame\n const leftGlassesFrameGeometry = new THREE.TorusGeometry(0.2, 0.02, 16, 32, Math.PI * 2);\n const leftGlassesFrame = new THREE.Mesh(leftGlassesFrameGeometry, glassesFrameMaterial);\n leftGlassesFrame.position.set(-0.3, 0.15, 0.92);\n leftGlassesFrame.rotation.x = Math.PI / 2;\n model.add(leftGlassesFrame);\n \n // Left glasses lens\n const leftLensGeometry = new THREE.CircleGeometry(0.19, 32);\n const leftLens = new THREE.Mesh(leftLensGeometry, glassLensMaterial);\n leftLens.position.set(-0.3, 0.15, 0.91);\n leftLens.rotation.x = Math.PI / 2;\n model.add(leftLens);\n \n // Right glasses frame\n const rightGlassesFrameGeometry = new THREE.TorusGeometry(0.2, 0.02, 16, 32, Math.PI * 2);\n const rightGlassesFrame = new THREE.Mesh(rightGlassesFrameGeometry, glassesFrameMaterial);\n rightGlassesFrame.position.set(0.3, 0.15, 0.92);\n rightGlassesFrame.rotation.x = Math.PI / 2;\n model.add(rightGlassesFrame);\n \n // Right glasses lens\n const rightLensGeometry = new THREE.CircleGeometry(0.19, 32);\n const rightLens = new THREE.Mesh(rightLensGeometry, glassLensMaterial);\n rightLens.position.set(0.3, 0.15, 0.91);\n rightLens.rotation.x = Math.PI / 2;\n model.add(rightLens);\n \n // Glasses bridge\n const bridgeGeometry = new THREE.BoxGeometry(0.3, 0.02, 0.02);\n const bridge = new THREE.Mesh(bridgeGeometry, glassesFrameMaterial);\n bridge.position.set(0, 0.15, 0.92);\n model.add(bridge);\n \n // Glasses temples (arms)\n const leftTempleGeometry = new THREE.BoxGeometry(0.02, 0.02, 0.5);\n const leftTemple = new THREE.Mesh(leftTempleGeometry, glassesFrameMaterial);\n leftTemple.position.set(-0.5, 0.15, 0.7);\n leftTemple.rotation.y = Math.PI / 2.5;\n model.add(leftTemple);\n \n const rightTempleGeometry = new THREE.BoxGeometry(0.02, 0.02, 0.5);\n const rightTemple = new THREE.Mesh(rightTempleGeometry, glassesFrameMaterial);\n rightTemple.position.set(0.5, 0.15, 0.7);\n rightTemple.rotation.y = -Math.PI / 2.5;\n model.add(rightTemple);\n \n // Create realistic hair\n const hairMaterial = new THREE.MeshStandardMaterial({ \n color: 0x5a3825, // Dark brown\n roughness: 0.8,\n metalness: 0.1\n });\n \n // Main hair volume\n const hairGeometry = new THREE.SphereGeometry(1.05, 32, 32, 0, Math.PI * 2, 0, Math.PI / 2);\n const hair = new THREE.Mesh(hairGeometry, hairMaterial);\n hair.position.set(0, 0.1, 0);\n hair.rotation.x = Math.PI * 0.05;\n model.add(hair);\n \n // Add some hair strands for more realism\n const strandGeometry = new THREE.BoxGeometry(0.05, 0.2, 0.05);\n \n // Create several strands across the forehead\n for (let i = -0.8; i <= 0.8; i += 0.2) {\n const strand = new THREE.Mesh(strandGeometry, hairMaterial);\n strand.position.set(i, 0.5, 0.8);\n strand.rotation.x = Math.PI * 0.15;\n strand.rotation.z = Math.random() * 0.2 - 0.1;\n model.add(strand);\n }\n \n // Add ears\n const earGeometry = new THREE.SphereGeometry(0.2, 32, 16);\n const earMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0xffdbbc,\n roughness: 0.5,\n metalness: 0.0,\n clearcoat: 0.2\n });\n \n // Left ear\n const leftEar = new THREE.Mesh(earGeometry, earMaterial);\n leftEar.position.set(-0.9, 0.1, 0);\n leftEar.scale.set(0.5, 1, 0.7);\n model.add(leftEar);\n \n // Right ear\n const rightEar = new THREE.Mesh(earGeometry, earMaterial);\n rightEar.position.set(0.9, 0.1, 0);\n rightEar.scale.set(0.5, 1, 0.7);\n model.add(rightEar);\n \n // Add neck\n const neckGeometry = new THREE.CylinderGeometry(0.3, 0.4, 0.7, 32);\n const neckMaterial = new THREE.MeshPhysicalMaterial({ \n color: 0xffe0c0,\n roughness: 0.3,\n metalness: 0.0,\n clearcoat: 0.3\n });\n \n const neck = new THREE.Mesh(neckGeometry, neckMaterial);\n neck.position.set(0, -0.8, 0);\n model.add(neck);\n \n // Add to scene\n scene.add(model);\n}\n\nfunction animateAvatarTalking() {\n // Clear any existing animation timeout\n if (animationTimeout) {\n clearTimeout(animationTimeout);\n }\n \n isAvatarTalking = true;\n \n // Animate eyebrows to show interest (raise slightly)\n if (facialFeatures.leftEyebrow && facialFeatures.rightEyebrow) {\n facialFeatures.leftEyebrow.position.y += 0.05;\n facialFeatures.rightEyebrow.position.y += 0.05;\n }\n \n // Make pupils dilate slightly to show engagement\n if (facialFeatures.leftPupil && facialFeatures.rightPupil) {\n facialFeatures.leftPupil.scale.set(1.2, 1.2, 1.2);\n facialFeatures.rightPupil.scale.set(1.2, 1.2, 1.2);\n }\n \n // Change eye color slightly to be more vibrant when talking\n if (eyesMaterial) {\n eyesMaterial.color.setHex(0x4a9ac4); // Brighter blue\n }\n \n // Set timeout to stop talking after 5 seconds\n animationTimeout = setTimeout(() => {\n isAvatarTalking = false;\n \n // Reset facial expressions\n if (facialFeatures.leftEyebrow && facialFeatures.rightEyebrow) {\n facialFeatures.leftEyebrow.position.y -= 0.05;\n facialFeatures.rightEyebrow.position.y -= 0.05;\n }\n \n if (facialFeatures.leftPupil && facialFeatures.rightPupil) {\n facialFeatures.leftPupil.scale.set(1, 1, 1);\n facialFeatures.rightPupil.scale.set(1, 1, 1);\n }\n \n if (eyesMaterial) {\n eyesMaterial.color.setHex(0x3a8ab4); // Back to normal blue\n }\n }, 5000);\n}\n\nfunction animate() {\n requestAnimationFrame(animate);\n \n const delta = clock.getDelta();\n const time = Date.now() * 0.001; // Current time in seconds\n \n // Animate the mouth if talking\n if (isAvatarTalking) {\n // More realistic mouth movement\n if (facialFeatures.upperLip && facialFeatures.lowerLip) {\n // Upper lip moves less than lower lip\n facialFeatures.upperLip.position.y = -0.4 + Math.sin(time * 10) * 0.02;\n // Lower lip moves more\n facialFeatures.lowerLip.position.y = -0.5 + Math.sin(time * 10) * 0.05;\n // Vary the mouth width slightly\n facialFeatures.upperLip.scale.x = 1 + Math.sin(time * 5) * 0.05;\n facialFeatures.lowerLip.scale.x = 1 + Math.sin(time * 5) * 0.05;\n }\n \n // Subtle head movement while talking (more active)\n if (model) {\n model.rotation.y = Math.sin(time * 1.5) * 0.1;\n model.rotation.x = Math.sin(time * 2) * 0.03;\n model.position.y = Math.sin(time * 2.5) * 0.03;\n }\n \n // Eye movement while talking (looking around slightly)\n if (facialFeatures.leftEye && facialFeatures.rightEye) {\n facialFeatures.leftEye.rotation.y = Math.sin(time * 0.5) * 0.2;\n facialFeatures.rightEye.rotation.y = Math.sin(time * 0.5) * 0.2;\n \n // Occasional blinks\n if (Math.sin(time * 3) > 0.95) {\n facialFeatures.leftEye.scale.y = 0.1;\n facialFeatures.rightEye.scale.y = 0.1;\n } else {\n facialFeatures.leftEye.scale.y = 1;\n facialFeatures.rightEye.scale.y = 1;\n }\n }\n } else {\n // Idle animations when not talking\n \n // Subtle breathing movement\n if (model) {\n model.rotation.y = Math.sin(time * 0.5) * 0.05;\n model.position.y = Math.sin(time * 0.7) * 0.02;\n }\n \n // Occasional random eye movements\n if (facialFeatures.leftEye && facialFeatures.rightEye) {\n // Look in random directions occasionally\n if (Math.sin(time * 0.3) > 0.9) {\n facialFeatures.leftEye.rotation.y = Math.sin(time * 0.2) * 0.3;\n facialFeatures.rightEye.rotation.y = Math.sin(time * 0.2) * 0.3;\n }\n \n // Random blinks\n if (Math.sin(time * 2) > 0.98) {\n facialFeatures.leftEye.scale.y = 0.1;\n facialFeatures.rightEye.scale.y = 0.1;\n } else {\n facialFeatures.leftEye.scale.y = 1;\n facialFeatures.rightEye.scale.y = 1;\n }\n }\n \n // Subtle mouth movements (breathing)\n if (facialFeatures.upperLip && facialFeatures.lowerLip) {\n facialFeatures.upperLip.position.y = -0.4;\n facialFeatures.lowerLip.position.y = -0.5 + Math.sin(time * 0.5) * 0.01;\n }\n }\n \n // Subtle skin color variations to simulate blood flow\n if (headModel) {\n const pulseIntensity = (Math.sin(time * 0.8) * 0.5 + 0.5) * 0.05;\n headModel.material.color.setRGB(\n 1.0 - pulseIntensity, \n 0.878 - pulseIntensity, \n 0.753 - pulseIntensity\n );\n }\n \n renderer.render(scene, camera);\n}\n\nfunction onWindowResize() {\n camera.aspect = avatarContainer.clientWidth / avatarContainer.clientHeight;\n camera.updateProjectionMatrix();\n renderer.setSize(avatarContainer.clientWidth, 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