dfattal.github.io/testRotation.html at main · dfattal/dfattal.github.io · GitHub

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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>Device Orientation Test</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            text-align: center;
            margin-top: 50px;
        }
        .value {
            font-size: 2em;
            margin: 10px;
        }
        #permission-button {
            display: none;
            padding: 10px 20px;
            font-size: 1.2em;
            margin-top: 20px;
        }
    </style>
</head>
<body>
    <h1>Device Orientation</h1>
    <p>Rotation around each axis (in degrees):</p>
    <div class="value">Alpha (Z axis): <span id="alpha">0</span>°</div>
    <div class="value">Beta (X axis): <span id="beta">0</span>°</div>
    <div class="value">Gamma (Y axis): <span id="gamma">0</span>°</div>

    <button id="permission-button">Enable Device Orientation</button>

    <script>
        let alpha = 0, beta = 0, gamma = 0;
        let alphaDisplay = document.getElementById('alpha');
        let betaDisplay = document.getElementById('beta');
        let gammaDisplay = document.getElementById('gamma');
        let smoothingFactor = 0.1;  // How fast the values return to zero when not moving

        // Function to handle device orientation and update the UI
        function handleOrientation(event) {
            alpha += (event.alpha - alpha) * smoothingFactor;
            beta += (event.beta - beta) * smoothingFactor;
            gamma += (event.gamma - gamma) * smoothingFactor;

            alphaDisplay.textContent = alpha.toFixed(1);
            betaDisplay.textContent = beta.toFixed(1);
            gammaDisplay.textContent = gamma.toFixed(1);
        }

        // Request permission for iOS devices
        function requestDeviceOrientationPermission() {
            if (typeof DeviceOrientationEvent !== 'undefined' && typeof DeviceOrientationEvent.requestPermission === 'function') {
                DeviceOrientationEvent.requestPermission()
                .then(function (response) {
                    if (response === 'granted') {
                        window.addEventListener('deviceorientation', handleOrientation);
                        document.getElementById('permission-button').style.display = 'none';
                    } else {
                        alert('Permission not granted');
                    }
                })
                .catch(console.error);
            } else {
                // If not iOS, just add the listener directly
                window.addEventListener('deviceorientation', handleOrientation);
            }
        }

        // Check if permission is needed for iOS and display the button if necessary
        if (typeof DeviceOrientationEvent !== 'undefined' && typeof DeviceOrientationEvent.requestPermission === 'function') {
            document.getElementById('permission-button').style.display = 'block';
            document.getElementById('permission-button').addEventListener('click', requestDeviceOrientationPermission);
        } else {
            // No need for permission, start the listener right away
            window.addEventListener('deviceorientation', handleOrientation);
        }

        // Function to slowly bring the angles back to zero when the device is not moving
        function resetToZero() {
            alpha += (0 - alpha) * smoothingFactor;
            beta += (0 - beta) * smoothingFactor;
            gamma += (0 - gamma) * smoothingFactor;

            alphaDisplay.textContent = alpha.toFixed(1);
            betaDisplay.textContent = beta.toFixed(1);
            gammaDisplay.textContent = gamma.toFixed(1);
        }

        // Call the resetToZero function periodically
        // setInterval(resetToZero, 50);  // Adjust the interval as needed
    </script>
</body>
</html>