13_Device_Orientation.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script>
    <link rel="stylesheet" href="https://openlayers.org/en/v5.3.0/css/ol.css" type="text/css">
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
    <script src="https://unpkg.com/gyronorm@2.0.6/dist/gyronorm.complete.min.js"></script>

</head>
<body>
    <!-- 기본틀로 사용하는 양식 -->
    <div id="map" class="map"></div>
    <p>
        <div>α : <code id="alpha"></code></div>
        <div>β : <code id="beta"></code></div>
        <div>γ : <code id="gamma"></code></div>
    </p>
    <p>
        <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/3D_Gyroscope.png/250px-3D_Gyroscope.png">
    </p>

    <script>
    var view = new ol.View({
            center: [0, 0],
            zoom: 2
        });
        var map = new ol.Map({
            layers: [
            new ol.layer.Tile({
                source: new ol.source.OSM()
            })
            ],
            target: 'map',
            view: view
        });

        function el(id) {
            return document.getElementById(id);
        }

        //https://github.com/dorukeker/gyronorm.js/
        //웹 브라우저에서 자이로 스코프 및 가속도계 데이터에 액세스하고이를 하나의 JS 객체에 결합합니다.
        //장치에 테스트 가능
        var gn = new GyroNorm();

        gn.init().then(function() {
            gn.start(function(event) {
            var center = view.getCenter();
            var resolution = view.getResolution(); //초기 해상도
            var alpha = toRadians(300);
            var beta = toRadians(100);
            var gamma = toRadians(90);

            el('alpha').innerText = alpha + ' [rad]';
            el('beta').innerText = beta + ' [rad]';
            el('gamma').innerText = gamma + ' [rad]';

            center[0] -= resolution * gamma * 25;
            center[1] += resolution * beta * 25;

            view.setCenter(view.constrainCenter(center));
            });
        });
    
        //ol.math.toRadians 존재하지않음 노드 패키지안에만 존재하는 것 같으므로 직접 func 작성
        toRadians = function (angleInDegrees) {
            return angleInDegrees * Math.PI / 180;
        }
    </script>
</body>
</html>