web-ar-Image-Tracking/index.html at main · thiefcoder/web-ar-Image-Tracking · GitHub

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

<head>
    <meta charset="utf-8">
    <meta name="viewport"
        content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover, shrink-to-fit=no">
    <title>Open AR Landing</title>
    <link rel="icon" type="image/svg+xml" href="assets/img/Icon/app-icon.svg">
    <link rel="apple-touch-icon" href="assets/img/Icon/app-icon.svg">
    <link rel="manifest" href="manifest.json">
    <meta name="theme-color" content="#111">
    <meta name="format-detection" content="telephone=no">
    <meta name="mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
    <link rel="stylesheet" href="assets/style.css?v=20260214-01" />
    <style>
        body.mes-landing {
            background: linear-gradient(180deg, #0f1745 0%, #233871 20%, #284082 50%, #233871 80%, #0f1745 100%) !important;
        }

        .camera-warning {
            margin-top: 18px;
            font-size: 13px;
            line-height: 1.6;
            color: #ffd399;
            max-width: 420px;
            text-align: center;
            background: rgba(255, 170, 0, .08);
            padding: 10px 14px;
            border: 1px solid rgba(255, 170, 0, .35);
            border-radius: 14px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            box-shadow: 0 4px 18px -6px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 170, 0, .25);
        }

        .camera-warning.hidden {
            display: none;
        }

        .camera-warning strong {
            color: #ffb347;
        }
    </style>
    <link rel="dns-prefetch" href="https://aframe.io">
    <link rel="preconnect" href="https://aframe.io" crossorigin>
    <link rel="dns-prefetch" href="https://cdn.jsdelivr.net">
    <link rel="preconnect" href="https://cdn.jsdelivr.net" crossorigin>
    <link rel="prefetch" href="ar-scene.html" as="document" />
</head>

<body class="mes-landing">
    <main class="hero" id="hero">
        <div class="landing-stack">
            <div class="top-basmallah">Open Augmented Reality Demo</div>
            <img class="corp-logo" src="assets/img/Icon/app-icon.svg" alt="AR experience icon" loading="lazy"
                decoding="async" />
            <button id="enterBtn" class="btn--main" type="button" disabled>...</button>
            <div id="camWarn" class="camera-warning hidden" role="alert" aria-live="polite"></div>
            <div class="credit-block">
                <div class="credit-text">Open-source demo. Use freely.</div>
            </div>
        </div>
    </main>
    <noscript>
        <div
            style="direction:ltr;text-align:center;padding:18px 24px;margin:24px auto;max-width:420px;border-radius:18px;background:#2d2d31;color:#ffcb8b;font-family:'Vazirmatn',system-ui,sans-serif;line-height:1.8;box-shadow:0 6px 30px -12px rgba(0,0,0,.55);border:1px solid rgba(255,203,139,.35);">
            JavaScript is required to use this AR experience. Please enable JavaScript and reload the page.
        </div>
    </noscript>
    <div id="loader" class="loader hidden" aria-hidden="true">
        <div class="loader__box">
            <div class="loader__title"><span>Preparing the AR experience</span></div>
            <div class="loader__bar"><span id="loaderProgress" style="width:0%;"></span></div>
            <div class="loader__percent" id="loaderPercent"><span>0%</span></div>
            <div class="loader__msg" id="loaderMsg"><span>Loading libraries...</span></div><button id="cancelLoad"
                class="loader__cancel" type="button">Cancel</button>
        </div>
    </div>
    <script>
        const LOCAL_SITE_VERSION = '20260214-01';
        const LIB_PRELOAD = [
            { id: 'aframe', url: 'https://aframe.io/releases/1.5.0/aframe.min.js' },
            { id: 'mindar', url: 'https://cdn.jsdelivr.net/npm/mind-ar@1.2.5/dist/mindar-image-aframe.prod.js' }
        ];
        const HEAVY_ASSETS = [
            'assets/Gltf/model.glb?v=20260214-01',
            'assets/Mind/targets.mind?v=20260214-01'
        ];

        const loaderEl = document.getElementById('loader');
        const progressBar = document.getElementById('loaderProgress');
        const percentEl = document.getElementById('loaderPercent');
        const msgEl = document.getElementById('loaderMsg');
        const cancelBtn = document.getElementById('cancelLoad');
        const enterBtn = document.getElementById('enterBtn');
        const camWarn = document.getElementById('camWarn');

        let cancelled = false;

        function showLoader() {
            loaderEl.classList.remove('hidden');
            loaderEl.setAttribute('aria-hidden', 'false');
        }

        function hideLoader() {
            loaderEl.classList.add('hidden');
            loaderEl.setAttribute('aria-hidden', 'true');
        }

        function setProgress(pct, msg, isError = false) {
            const clamped = Math.min(100, Math.max(0, pct));
            progressBar.style.width = clamped + '%';
            percentEl.textContent = clamped.toFixed(0) + '%';
            if (msg) msgEl.textContent = msg;
            loaderEl.classList.toggle('error', !!isError);
        }

        function detectMobileOrTablet() {
            const ua = navigator.userAgent || navigator.vendor || window.opera;
            const classic = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini|Tablet|Windows Phone/i.test(ua);
            const touchMac = /Macintosh/.test(ua) && (navigator.maxTouchPoints || 0) > 1;
            const uaDataMobile = navigator.userAgentData && navigator.userAgentData.mobile;
            return classic || touchMac || uaDataMobile;
        }

        function setupViewportUnits() {
            const setVh = () => {
                const vh = window.innerHeight * 0.01;
                document.documentElement.style.setProperty('--app-vh', vh + 'px');
                document.documentElement.style.setProperty('--viewport-width', window.innerWidth + 'px');
                document.documentElement.style.setProperty('--viewport-height', window.innerHeight + 'px');
            };
            setVh();
            window.addEventListener('resize', setVh);
            window.addEventListener('orientationchange', () => setTimeout(setVh, 100));
            if (window.visualViewport) window.visualViewport.addEventListener('resize', setVh);
        }

        async function checkSiteVersion() {
            try {
                const resp = await fetch('version.json', { cache: 'no-store' });
                if (!resp.ok) return;
                const data = await resp.json();
                if (data.version && data.version !== LOCAL_SITE_VERSION) {
                    if (navigator.serviceWorker?.controller) {
                        navigator.serviceWorker.controller.postMessage({ type: 'SKIP_WAITING' });
                    }
                    setTimeout(() => window.location.reload(), 800);
                }
            } catch (e) {
                console.warn('Version check failed', e);
            }
        }

        function loadScriptTag(url) {
            return new Promise((resolve, reject) => {
                const s = document.createElement('script');
                s.src = url;
                s.async = false;
                s.onload = resolve;
                s.onerror = () => reject(new Error('Failed to load ' + url));
                document.head.appendChild(s);
            });
        }

        async function preloadLibraries() {
            showLoader();
            setProgress(4, 'Preparing...');
            let step = 0;
            for (const lib of LIB_PRELOAD) {
                if (cancelled) return;
                step += 1;
                setProgress(step * (100 / LIB_PRELOAD.length), 'Loading ' + lib.id + '...');
                await loadScriptTag(lib.url);
            }
            setProgress(100, 'Ready!');
        }

        async function ensureCameraPermission() {
            camWarn.classList.add('hidden');
            camWarn.textContent = '';
            try {
                const stream = await navigator.mediaDevices.getUserMedia({ video: { facingMode: 'environment' } });
                stream.getTracks().forEach((t) => t.stop());
                return true;
            } catch (err) {
                const blocked = err && (err.name === 'NotAllowedError' || err.name === 'PermissionDeniedError');
                const msg = blocked
                    ? 'Camera access is blocked. Please enable camera permissions in your browser/app settings and try again.'
                    : 'Camera access is required. Please grant permission to continue.';
                camWarn.innerHTML = '<strong>Camera permission needed:</strong> ' + msg;
                camWarn.classList.remove('hidden');
                enterBtn.textContent = 'Allow camera access';
                return false;
            }
        }

        function prefetchHeavyAssets() {
            if (!window.fetch) return;
            const connection = navigator.connection || navigator.mozConnection || navigator.webkitConnection;
            if (connection) {
                if (connection.saveData) return;
                if (['slow-2g', '2g'].includes(connection.effectiveType)) return;
            }
            HEAVY_ASSETS.forEach((url) => {
                fetch(url, { credentials: 'same-origin', cache: 'force-cache' }).catch(() => { });
            });
        }

        function goToAR() {
            window.location.href = 'ar-scene.html';
        }

        async function handleEnter() {
            if (enterBtn.disabled) return;
            const ok = await ensureCameraPermission();
            if (!ok) return;
            cancelled = false;
            const fallback = setTimeout(goToAR, 4000);
            try {
                await preloadLibraries();
                clearTimeout(fallback);
                goToAR();
            } catch (e) {
                clearTimeout(fallback);
                console.warn('Preload failed, continuing to scene', e);
                goToAR();
            } finally {
                hideLoader();
            }
        }

        function init() {
            setupViewportUnits();
            const isMobile = detectMobileOrTablet();
            if (isMobile) {
                enterBtn.classList.add('btn--main-active');
                enterBtn.textContent = 'Enter the AR experience';
                enterBtn.disabled = false;
                enterBtn.addEventListener('click', handleEnter, { passive: true });
            } else {
                enterBtn.classList.add('btn--main-disabled');
                enterBtn.textContent = 'Use a mobile device to continue';
                enterBtn.disabled = true;
            }

            if ('serviceWorker' in navigator) {
                navigator.serviceWorker.register('sw.js').catch(() => { });
                navigator.serviceWorker.addEventListener('message', (evt) => {
                    if (evt.data?.type === 'SW_VERSION') console.log('[SW] Active version', evt.data.version);
                });
            }

            checkSiteVersion();
            setInterval(checkSiteVersion, 60000);
            prefetchHeavyAssets();
        }

        cancelBtn?.addEventListener('click', () => { cancelled = true; hideLoader(); });
        window.addEventListener('load', init, { once: true });
    </script>
</body>

</html>