Vision/index.html at main · dipti-2211/Vision · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Gesture Controlled 3D Particles</title>
    <style>
        body {
            margin: 0;
            overflow: hidden;
            background: #000;
            font-family: 'Courier New', Courier, monospace;
        }

        #canvas-container {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
        }

        #video-element {
            position: absolute;
            top: 0;
            left: 0;
            opacity: 0;
            pointer-events: none;
            z-index: 0;
        }

        #ui {
            position: absolute;
            top: 20px;
            left: 20px;
            color: #00ffcc;
            z-index: 10;
            background: rgba(0, 0, 0, 0.6);
            padding: 15px;
            border: 1px solid #00ffcc;
            border-radius: 8px;
            pointer-events: none;
        }

        .status-dot {
            height: 10px;
            width: 10px;
            background-color: #ff0000;
            border-radius: 50%;
            display: inline-block;
            margin-right: 5px;
        }

        .active {
            background-color: #00ff00;
            box-shadow: 0 0 10px #00ff00;
        }
    </style>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@mediapipe/camera_utils/camera_utils.js" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/@mediapipe/control_utils/control_utils.js"
        crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/@mediapipe/drawing_utils/drawing_utils.js"
        crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/@mediapipe/hands/hands.js" crossorigin="anonymous"></script>
</head>

<body>

    <div id="ui">
        <h3>Gesture Control System</h3>
        <div><span id="cam-status" class="status-dot"></span> Camera: <span id="cam-text">Initializing...</span></div>
        <p>🖐 <b>Open Hand:</b> Rotate & Color</p>
        <p>🤏 <b>Pinch:</b> Collapse/Expand</p>
        <p>✊ <b>Fist (Hold):</b> Switch Shape</p>
        <p>Current Shape: <b id="shape-name">SPHERE</b></p>
    </div>

    <video id="video-element"></video>
    <div id="canvas-container"></div>

    <script>
        /**
         * CONFIGURATION & GLOBALS
         */
        const PARTICLE_COUNT = 15000;
        const PARTICLE_SIZE = 0.08;
        let scene, camera, renderer, particles, geometry, material;
        let currentPositions = [];
        let targetPositions = [];
        let originalPositions = []; // To store the 'base' shape for morphing
        let isFistDetected = false;
        let fistHoldTimer = 0;

        // Interaction State
        const interaction = {
            x: 0,
            y: 0,
            pinchDistance: 1.0, // 1.0 is normal, <1 is contraction
            shapeIndex: 0
        };

        const SHAPES = ['SPHERE', 'HEART', 'SATURN', 'FLOWER', 'DNA'];

        /**
         * 1. THREE.JS SETUP
         */
        function initThree() {
            const container = document.getElementById('canvas-container');

            scene = new THREE.Scene();
            scene.fog = new THREE.FogExp2(0x000000, 0.03);

            camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
            camera.position.z = 10;

            renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
            renderer.setSize(window.innerWidth, window.innerHeight);
            renderer.setPixelRatio(window.devicePixelRatio);
            container.appendChild(renderer.domElement);

            // Initialize Particles
            geometry = new THREE.BufferGeometry();
            const positions = new Float32Array(PARTICLE_COUNT * 3);
            const colors = new Float32Array(PARTICLE_COUNT * 3);

            // Initial shape: Sphere
            const sphere = getSpherePositions();

            for (let i = 0; i < PARTICLE_COUNT * 3; i++) {
                positions[i] = sphere[i];
                currentPositions[i] = sphere[i];
                targetPositions[i] = sphere[i];
                colors[i] = 1.0; // Start white
            }

            geometry.setAttribute('position', new THREE.BufferAttribute(positions, 3));
            geometry.setAttribute('color', new THREE.BufferAttribute(colors, 3));

            // Shader Material for better glow performance
            const sprite = new THREE.TextureLoader().load('https://threejs.org/examples/textures/sprites/disc.png');

            material = new THREE.PointsMaterial({
                size: PARTICLE_SIZE,
                map: sprite,
                vertexColors: true,
                blending: THREE.AdditiveBlending,
                depthTest: false,
                transparent: true,
                opacity: 0.8
            });

            particles = new THREE.Points(geometry, material);
            scene.add(particles);

            // Initial fill of shapes
            switchShape(0);

            animate();
        }

        /**
         * 2. SHAPE GENERATORS (Maths)
         */
        function getSpherePositions() {
            const arr = new Float32Array(PARTICLE_COUNT * 3);
            for (let i = 0; i < PARTICLE_COUNT; i++) {
                const r = 4;
                const theta = Math.random() * Math.PI * 2;
                const phi = Math.acos((Math.random() * 2) - 1);

                arr[i * 3] = r * Math.sin(phi) * Math.cos(theta);
                arr[i * 3 + 1] = r * Math.sin(phi) * Math.sin(theta);
                arr[i * 3 + 2] = r * Math.cos(phi);
            }
            return arr;
        }

        function getHeartPositions() {
            const arr = new Float32Array(PARTICLE_COUNT * 3);
            for (let i = 0; i < PARTICLE_COUNT; i++) {
                // Parametric Heart 3D
                let x = (Math.random() - 0.5) * 6;
                let y = (Math.random() - 0.5) * 6;
                let z = (Math.random() - 0.5) * 6;

                // Rejection sampling to fill volume
                let tries = 0;
                while (tries < 10) {
                    const hx = Math.random() * 2 * Math.PI;
                    const hz = Math.random() * 2 - 1;
                    // Simplified surface distribution
                    // Using standard parametric equation for better visuals
                    const t = Math.random() * Math.PI * 2;
                    const u = Math.random() * Math.PI;

                    // Heart formula
                    x = 16 * Math.pow(Math.sin(t), 3);
                    y = 13 * Math.cos(t) - 5 * Math.cos(2 * t) - 2 * Math.cos(3 * t) - Math.cos(4 * t);
                    z = 4 * Math.cos(u) * Math.sin(t); // add thickness

                    // Scale down
                    arr[i * 3] = x * 0.2;
                    arr[i * 3 + 1] = y * 0.2;
                    arr[i * 3 + 2] = z * 0.2;
                    tries++;
                }
            }
            return arr;
        }

        function getSaturnPositions() {
            const arr = new Float32Array(PARTICLE_COUNT * 3);
            const ringCount = Math.floor(PARTICLE_COUNT * 0.6);
            const planetCount = PARTICLE_COUNT - ringCount;

            // Planet
            for (let i = 0; i < planetCount; i++) {
                const r = 2.5;
                const theta = Math.random() * Math.PI * 2;
                const phi = Math.acos((Math.random() * 2) - 1);
                arr[i * 3] = r * Math.sin(phi) * Math.cos(theta);
                arr[i * 3 + 1] = r * Math.sin(phi) * Math.sin(theta);
                arr[i * 3 + 2] = r * Math.cos(phi);
            }

            // Rings
            for (let i = planetCount; i < PARTICLE_COUNT; i++) {
                const angle = Math.random() * Math.PI * 2;
                const dist = 3.5 + Math.random() * 2.5;
                arr[i * 3] = Math.cos(angle) * dist;
                arr[i * 3 + 1] = (Math.random() - 0.5) * 0.2; // thin y
                arr[i * 3 + 2] = Math.sin(angle) * dist;

                // Tilt the ring
                const x = arr[i * 3];
                const y = arr[i * 3 + 1];
                const tilt = 0.4;
                arr[i * 3] = x * Math.cos(tilt) - y * Math.sin(tilt);
                arr[i * 3 + 1] = x * Math.sin(tilt) + y * Math.cos(tilt);
            }
            return arr;
        }

        function getFlowerPositions() {
            const arr = new Float32Array(PARTICLE_COUNT * 3);
            for (let i = 0; i < PARTICLE_COUNT; i++) {
                const u = Math.random() * Math.PI * 2;
                const v = Math.random() * Math.PI;
                // Rose/Flower polar mathematics
                const k = 5; // petals
                const r = 3 * Math.cos(k * u) + 1;

                arr[i * 3] = r * Math.cos(u) * Math.sin(v);
                arr[i * 3 + 1] = r * Math.sin(u) * Math.sin(v);
                arr[i * 3 + 2] = r * Math.cos(v) * 0.5; // flatten z
            }
            return arr;
        }

        function getDNAPositions() {
            const arr = new Float32Array(PARTICLE_COUNT * 3);
            for (let i = 0; i < PARTICLE_COUNT; i++) {
                const t = (i / PARTICLE_COUNT) * 20 * Math.PI;
                const radius = 2;
                const height = (i / PARTICLE_COUNT) * 10 - 5;

                // Double Helix offset
                const strand = i % 2 === 0 ? 0 : Math.PI;

                arr[i * 3] = radius * Math.cos(t + strand);
                arr[i * 3 + 1] = height;
                arr[i * 3 + 2] = radius * Math.sin(t + strand);
            }
            return arr;
        }

        function switchShape(index) {
            let positions;
            const name = SHAPES[index % SHAPES.length];
            document.getElementById('shape-name').innerText = name;

            switch (name) {
                case 'SPHERE': positions = getSpherePositions(); break;
                case 'HEART': positions = getHeartPositions(); break;
                case 'SATURN': positions = getSaturnPositions(); break;
                case 'FLOWER': positions = getFlowerPositions(); break;
                case 'DNA': positions = getDNAPositions(); break;
            }

            // Set target positions
            for (let i = 0; i < positions.length; i++) {
                targetPositions[i] = positions[i];
            }
        }

        /**
         * 3. MEDIAPIPE HANDS SETUP
         */
        const videoElement = document.getElementById('video-element');

        function onResults(results) {
            document.getElementById('cam-status').classList.add('active');
            document.getElementById('cam-text').innerText = "Active";

            if (results.multiHandLandmarks && results.multiHandLandmarks.length > 0) {
                const landmarks = results.multiHandLandmarks[0];

                // 1. Position Tracking (Index Finger Tip - Landmark 8)
                // Map 0-1 coord to -1 to 1 for 3D space
                const indexTip = landmarks[8];
                interaction.x = (indexTip.x - 0.5) * 2;
                interaction.y = -(indexTip.y - 0.5) * 2; // Invert Y

                // 2. Pinch Detection (Index Tip 8 to Thumb Tip 4)
                const thumbTip = landmarks[4];
                const distance = Math.sqrt(
                    Math.pow(indexTip.x - thumbTip.x, 2) +
                    Math.pow(indexTip.y - thumbTip.y, 2)
                );
                // Map distance: approx 0.02 (touching) to 0.2 (open)
                interaction.pinchDistance = THREE.MathUtils.mapLinear(distance, 0.02, 0.2, 0.2, 1.5);
                interaction.pinchDistance = Math.max(0.1, Math.min(interaction.pinchDistance, 2.0));

                // 3. Fist Detection (Simple heuristic: Fingertips close to palm)
                // Check if fingertips (8, 12, 16, 20) are below PIP joints (6, 10, 14, 18) in Y axis
                // Note: Coordinates are normalized. 0 is top, 1 is bottom.
                const isFist = (landmarks[8].y > landmarks[6].y) &&
                    (landmarks[12].y > landmarks[10].y) &&
                    (landmarks[16].y > landmarks[14].y) &&
                    (landmarks[20].y > landmarks[18].y);

                if (isFist) {
                    fistHoldTimer++;
                    if (fistHoldTimer > 30) { // Approx 1 second hold
                        interaction.shapeIndex++;
                        switchShape(interaction.shapeIndex);
                        fistHoldTimer = 0; // Reset
                    }
                } else {
                    fistHoldTimer = 0;
                }
            }
        }

        const hands = new Hands({
            locateFile: (file) => {
                return `https://cdn.jsdelivr.net/npm/@mediapipe/hands/${file}`;
            }
        });

        hands.setOptions({
            maxNumHands: 1,
            modelComplexity: 1,
            minDetectionConfidence: 0.5,
            minTrackingConfidence: 0.5
        });

        hands.onResults(onResults);

        const cameraUtils = new Camera(videoElement, {
            onFrame: async () => {
                await hands.send({ image: videoElement });
            },
            width: 640,
            height: 480
        });
        cameraUtils.start();

        /**
         * 4. ANIMATION LOOP
         */
        function animate() {
            requestAnimationFrame(animate);

            const positions = particles.geometry.attributes.position.array;
            const colors = particles.geometry.attributes.color.array;

            // Morphing Speed
            const lerpFactor = 0.05;

            // Time for animations
            const time = Date.now() * 0.001;

            for (let i = 0; i < PARTICLE_COUNT; i++) {
                const i3 = i * 3;

                // 1. MORPHING LOGIC: Lerp current pos to target pos
                currentPositions[i3] += (targetPositions[i3] - currentPositions[i3]) * lerpFactor;
                currentPositions[i3 + 1] += (targetPositions[i3 + 1] - currentPositions[i3 + 1]) * lerpFactor;
                currentPositions[i3 + 2] += (targetPositions[i3 + 2] - currentPositions[i3 + 2]) * lerpFactor;

                // 2. GESTURE INTERACTION: EXPANSION (Pinch)
                // We multiply positions by pinch factor
                let x = currentPositions[i3] * interaction.pinchDistance;
                let y = currentPositions[i3 + 1] * interaction.pinchDistance;
                let z = currentPositions[i3 + 2] * interaction.pinchDistance;

                // 3. NOISE/MOVEMENT (Alive feeling)
                // Add subtle sine wave movement based on index
                x += Math.sin(time + x) * 0.02;
                y += Math.cos(time + y) * 0.02;

                positions[i3] = x;
                positions[i3 + 1] = y;
                positions[i3 + 2] = z;

                // 4. DYNAMIC COLOR
                // Change color based on Hand X/Y Position
                // Base color + hand offset
                const r = 0.5 + Math.sin(time + x * 0.5) * 0.5 + (interaction.x * 0.5);
                const g = 0.5 + Math.cos(time + y * 0.5) * 0.5 + (interaction.y * 0.5);
                const b = 0.8; // High Blue base

                colors[i3] = Math.max(0, Math.min(1, r));
                colors[i3 + 1] = Math.max(0, Math.min(1, g));
                colors[i3 + 2] = b;
            }

            particles.geometry.attributes.position.needsUpdate = true;
            particles.geometry.attributes.color.needsUpdate = true;

            // Global Rotation based on Hand X
            particles.rotation.y += 0.002 + (interaction.x * 0.05);
            particles.rotation.x += (interaction.y * 0.05);

            renderer.render(scene, camera);
        }

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

        // Boot
        initThree();

    </script>
</body>

</html>