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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>3D Visualizer | GraphicsLab</title>
    <link rel="icon" type="image/x-icon" href="https://static.photos/technology/32x32/3">
    <link rel="stylesheet" href="style.css">
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.128.0/examples/js/controls/OrbitControls.min.js"></script>
</head>
<body class="bg-gray-50 text-gray-900">
    <custom-navbar></custom-navbar>

    <main class="container mx-auto px-4 py-8">
        <div class="mb-10">
            <h1 class="text-4xl font-bold mb-4">Interactive 3D Visualizer</h1>
            <p class="text-gray-600">Load, manipulate, and visualize 3D models with real‑time lighting and effects.</p>
        </div>

        <div class="grid grid-cols-1 lg:grid-cols-3 gap-8">
            <div class="lg:col-span-2">
                <div class="card p-0 overflow-hidden">
                    <div class="bg-gray-900 p-4 flex justify-between items-center">
                        <h2 class="text-xl font-bold text-white">WebGL Canvas</h2>
                        <div class="flex gap-2">
                            <button id="playBtn" class="btn-small bg-green-600">
                                <i class="fas fa-play mr-1"></i> Play
                            </button>
                            <button id="resetBtn" class="btn-small bg-gray-700">
                                <i class="fas fa-redo mr-1"></i> Reset
                            </button>
                        </div>
                    </div>
                    <div id="canvasContainer" class="relative w-full h-96 bg-gradient-to-br from-gray-900 to-black">
                        <canvas id="threeCanvas" class="w-full h-full"></canvas>
                        <div id="loading" class="absolute inset-0 flex items-center justify-center bg-black bg-opacity-75 text-white text-xl">
                            <div class="text-center">
                                <i class="fas fa-spinner fa-spin text-4xl mb-4"></i>
                                <p>Loading WebGL scene...</p>
                            </div>
                        </div>
                    </div>
                    <div class="p-4 bg-gray-100 flex justify-between items-center">
                        <div class="text-sm text-gray-700">
                            <span id="fpsCounter">FPS: 60</span> |
                            <span id="triangleCount">Triangles: 0</span> |
                            <span id="renderTime">Render: 0ms</span>
                        </div>
                        <div class="flex gap-2">
                            <button class="text-sm bg-gray-300 hover:bg-gray-400 px-3 py-1 rounded" onclick="toggleWireframe()">
                                <i class="fas fa-th"></i> Wireframe
                            </button>
                            <button class="text-sm bg-gray-300 hover:bg-gray-400 px-3 py-1 rounded" onclick="toggleShadows()">
                                <i class="fas fa-sun"></i> Shadows
                            </button>
                        </div>
                    </div>
                </div>

                <div class="card mt-8">
                    <h2 class="text-2xl font-bold mb-4">Model Library</h2>
                    <div class="grid grid-cols-2 md:grid-cols-4 gap-4">
                        <div class="model-card p-4 border border-gray-300 rounded-lg text-center cursor-pointer hover:bg-gray-50" onclick="loadModel('sphere')">
                            <div class="text-4xl text-blue-500 mb-2">
                                <i class="fas fa-globe-americas"></i>
                            </div>
                            <div class="font-semibold">Sphere</div>
                            <div class="text-sm text-gray-500">1,280 triangles</div>
                        </div>
                        <div class="model-card p-4 border border-gray-300 rounded-lg text-center cursor-pointer hover:bg-gray-50" onclick="loadModel('cube')">
                            <div class="text-4xl text-purple-500 mb-2">
                                <i class="fas fa-cube"></i>
                            </div>
                            <div class="font-semibold">Cube</div>
                            <div class="text-sm text-gray-500">12 triangles</div>
                        </div>
                        <div class="model-card p-4 border border-gray-300 rounded-lg text-center cursor-pointer hover:bg-gray-50" onclick="loadModel('torus')">
                            <div class="text-4xl text-green-500 mb-2">
                                <i class="fas fa-ring"></i>
                            </div>
                            <div class="font-semibold">Torus</div>
                            <div class="text-sm text-gray-500">4,800 triangles</div>
                        </div>
                        <div class="model-card p-4 border border-gray-300 rounded-lg text-center cursor-pointer hover:bg-gray-50" onclick="loadModel('teapot')">
                            <div class="text-4xl text-red-500 mb-2">
                                <i class="fas fa-mug-hot"></i>
                            </div>
                            <div class="font-semibold">Teapot</div>
                            <div class="text-sm text-gray-500">6,324 triangles</div>
                        </div>
                    </div>
                </div>
            </div>

            <div>
                <div class="card mb-8">
                    <h2 class="text-2xl font-bold mb-4">Controls</h2>
                    <div class="space-y-6">
                        <div>
                            <label class="block text-gray-700 mb-2">Rotation Speed</label>
                            <input type="range" min="0" max="10" value="2" class="w-full" id="rotationSpeed" oninput="updateRotation(this.value)">
                            <div class="flex justify-between text-sm text-gray-500">
                                <span>Slow</span>
                                <span id="speedValue">2</span>
                                <span>Fast</span>
                            </div>
                        </div>
                        <div>
                            <label class="block text-gray-700 mb-2">Light Intensity</label>
                            <input type="range" min="0" max="5" step="0.1" value="1.5" class="w-full" id="lightIntensity" oninput="updateLight(this.value)">
                            <div class="flex justify-between text-sm text-gray-500">
                                <span>Dim</span>
                                <span id="lightValue">1.5</span>
                                <span>Bright</span>
                            </div>
                        </div>
                        <div>
                            <label class="block text-gray-700 mb-2">Background Color</label>
                            <div class="flex gap-2">
                                <button class="flex-1 py-2 rounded bg-gray-800 text-white" onclick="setBackground('#1f2937')">Dark</button>
                                <button class="flex-1 py-2 rounded bg-gray-300" onclick="setBackground('#f3f4f6')">Light</button>
                                <button class="flex-1 py-2 rounded bg-blue-900 text-white" onclick="setBackground('#1e3a8a')">Blue</button>
                            </div>
                        </div>
                        <div>
                            <label class="block text-gray-700 mb-2">Post‑Processing</label>
                            <div class="space-y-2">
                                <label class="flex items-center">
                                    <input type="checkbox" class="mr-2" id="bloom" onchange="toggleEffect('bloom')">
                                    <span>Bloom</span>
                                </label>
                                <label class="flex items-center">
                                    <input type="checkbox" class="mr-2" id="vignette" onchange="toggleEffect('vignette')">
                                    <span>Vignette</span>
                                </label>
                                <label class="flex items-center">
                                    <input type="checkbox" class="mr-2" id="ssao" onchange="toggleEffect('ssao')">
                                    <span>SSAO</span>
                                </label>
                            </div>
                        </div>
                    </div>
                </div>

                <div class="card">
                    <h2 class="text-2xl font-bold mb-4">Scene Info</h2>
                    <div class="space-y-3">
                        <div class="flex justify-between">
                            <span class="text-gray-600">Renderer</span>
                            <span class="font-semibold" id="rendererInfo">WebGL 2</span>
                        </div>
                        <div class="flex justify-between">
                            <span class="text-gray-600">Draw Calls</span>
                            <span class="font-semibold" id="drawCalls">1</span>
                        </div>
                        <div class="flex justify-between">
                            <span class="text-gray-600">Textures</span>
                            <span class="font-semibold" id="textureCount">3</span>
                        </div>
                        <div class="flex justify-between">
                            <span class="text-gray-600">Lights</span>
                            <span class="font-semibold" id="lightCount">2</span>
                        </div>
                        <div class="flex justify-between">
                            <span class="text-gray-600">VRAM Usage</span>
                            <span class="font-semibold" id="vramUsage">~120 MB</span>
                        </div>
                    </div>
                    <button class="btn-primary w-full mt-6" onclick="exportScene()">
                        <i class="fas fa-download mr-2"></i> Export as GLB
                    </button>
                </div>
            </div>
        </div>
    </main>

    <custom-footer></custom-footer>

    <script src="components/navbar.js"></script>
    <script src="components/footer.js"></script>
    <script src="script.js"></script>
    <script>
        // Three.js scene variables
        let scene, camera, renderer, controls, cube;
        let rotationSpeed = 2;
        let lightIntensity = 1.5;
        let frameCount = 0;
        let lastTime = performance.now();
        let fps = 60;

        // Initialize Three.js scene
        function initScene() {
            const canvas = document.getElementById('threeCanvas');
            const container = document.getElementById('canvasContainer');

            scene = new THREE.Scene();
            scene.background = new THREE.Color(0x1f2937);

            camera = new THREE.PerspectiveCamera(75, container.clientWidth / container.clientHeight, 0.1, 1000);
            camera.position.z = 5;

            renderer = new THREE.WebGLRenderer({ canvas, antialias: true });
            renderer.setSize(container.clientWidth, container.clientHeight);
            renderer.shadowMap.enabled = true;
            renderer.shadowMap.type = THREE.PCFSoftShadowMap;

            // OrbitControls
            controls = new THREE.OrbitControls(camera, renderer.domElement);
            controls.enableDamping = true;
            controls.dampingFactor = 0.05;

            // Lighting
            const ambientLight = new THREE.AmbientLight(0xffffff, 0.6);
            scene.add(ambientLight);

            const directionalLight = new THREE.DirectionalLight(0xffffff, lightIntensity);
            directionalLight.position.set(5, 5, 5);
            directionalLight.castShadow = true;
            scene.add(directionalLight);

            // Add a default cube
            const geometry = new THREE.BoxGeometry();
            const material = new THREE.MeshStandardMaterial({ color: 0x3b82f6, roughness: 0.3, metalness: 0.8 });
            cube = new THREE.Mesh(geometry, material);
            cube.castShadow = true;
            cube.receiveShadow = true;
            scene.add(cube);

            // Add a ground plane
            const planeGeometry = new THREE.PlaneGeometry(10, 10);
            const planeMaterial = new THREE.MeshStandardMaterial({ color: 0x374151, side: THREE.DoubleSide });
            const plane = new THREE.Mesh(planeGeometry, planeMaterial);
            plane.rotation.x = Math.PI / 2;
            plane.position.y = -2;
            plane.receiveShadow = true;
            scene.add(plane);

            // Hide loading
            document.getElementById('loading').style.display = 'none';

            // Start animation loop
            animate();

            // Update info
            updateInfo();
        }

        // Animation loop
        function animate() {
            requestAnimationFrame(animate);
            cube.rotation.x += 0.01 * rotationSpeed;
            cube.rotation.y += 0.01 * rotationSpeed;
            controls.update();
            renderer.render(scene, camera);

            // FPS calculation
            frameCount++;
            const now = performance.now();
            if (now >= lastTime + 1000) {
                fps = Math.round((frameCount * 1000) / (now - lastTime));
                frameCount = 0;
                lastTime = now;
                document.getElementById('fpsCounter').textContent = `FPS: ${fps}`;
            }
        }

        // UI functions
        function updateRotation(val) {
            rotationSpeed = parseFloat(val);
            document.getElementById('speedValue').textContent = val;
        }

        function updateLight(val) {
            lightIntensity = parseFloat(val);
            scene.children.forEach(child => {
                if (child.isLight) child.intensity = lightIntensity;
            });
            document.getElementById('lightValue').textContent = val;
        }

        function setBackground(color) {
            scene.background = new THREE.Color(color);
        }

        function toggleWireframe() {
            cube.material.wireframe = !cube.material.wireframe;
        }

        function toggleShadows() {
            renderer.shadowMap.enabled = !renderer.shadowMap.enabled;
        }

        function toggleEffect(effect) {
            alert(`Effect ${effect} toggled (simulated)`);
        }

        function loadModel(model) {
            alert(`Loading ${model} model (simulated)`);
            // In a real app, load GLTF/OBJ here
            document.getElementById('triangleCount').textContent = `Triangles: ${{
                sphere: 1280,
                cube: 12,
                torus: 4800,
                teapot: 6324
            }[model]}`;
        }

        function exportScene() {
            alert('Scene exported as GLB (simulated)');
        }

        function updateInfo() {
            document.getElementById('rendererInfo').textContent = renderer.capabilities.isWebGL2 ? 'WebGL 2' : 'WebGL 1';
            document.getElementById('drawCalls').textContent = renderer.info.render.calls;
            document.getElementById('textureCount').textContent = renderer.info.memory.textures;
            document.getElementById('lightCount').textContent = scene.children.filter(c => c.isLight).length;
        }

        // Resize handler
        window.addEventListener('resize', () => {
            const container = document.getElementById('canvasContainer');
            camera.aspect = container.clientWidth / container.clientHeight;
            camera.updateProjectionMatrix();
            renderer.setSize(container.clientWidth, container.clientHeight);
        });

        // Initialize on load
        window.addEventListener('DOMContentLoaded', () => {
            initScene();
        });
    </script>
</body>
</html>