Hongqiao_railway_station/index.html at master · BranZhang/Hongqiao_railway_station · GitHub

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<!DOCTYPE html>
<html>
    <head>
        <meta charset='utf-8'/>
        <title>trains</title>
        <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no'/>
        <script src='railway_data.js'></script>
        <script src='railway_path_data.js'></script>
        <script src='trains_info_data.js'></script>
        <script src='train.js'></script>
        <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v1.5.0/mapbox-gl.js'></script>
        <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v1.5.0/mapbox-gl.css' rel='stylesheet'/>
        <style>
            body {
                margin: 0;
                padding: 0;
            }

            #map {
                position: absolute;
                top: 0;
                bottom: 0;
                width: 100%;
            }
        </style>
    </head>
    <body>
        <style>
            #pause {
                width: inherit;
                color: black;
                text-align: center;
            }
            .pause-ctrl {
                width: 100px;
            }
        </style>
        <div id='map'></div>
        <script>
            class PauseControl {
                onAdd(map) {
                    this._map = map;
                    this._container = document.createElement('div');
                    this._container.className = 'mapboxgl-ctrl mapboxgl-ctrl-group pause-ctrl';
                    this._container.innerHTML = "<button id='pause'></button>";
                    return this._container;
                }

                onRemove() {
                    this._container.parentNode.removeChild(this._container);
                    this._map = undefined;
                }
            }

            Train.load_railway_data(raw_railway_data);
            Train.load_railway_path_data(railway_path_data);

            trains = [];
            trains_info.forEach(t => {
                var train = new Train(t);
                if (train.legal) {
                    trains.push(train);
                }
            });

            mapboxgl.accessToken = 'pk.eyJ1IjoiYnJhbnpoYW5nIiwiYSI6ImNrM2U2dHh0ejE2YngzaXFlcjFvdG96b2EifQ.KSQQ0l2qGa1-nrEKn3YKPw';
            var map = new mapboxgl.Map({
                container: 'map',
                style: 'mapbox://styles/branzhang/ck3e2bq8g1pj21cquzpiuhwmc',
                center: [121.315625, 31.196169],
                zoom: 16.5,
                minZoom: 13,
                maxZoom: 18
            });
            map.addControl(new mapboxgl.FullscreenControl());
            map.addControl(new PauseControl(), 'top-left');

            // Set the map's max bounds.
            map.setMaxBounds([
                [121.115625, 30.996169], // [west, south]
                [121.515625, 31.396169]  // [east, north]
            ]);

            // to store and cancel the animation
            var animation;
            var startTime = new Date(2019, 0, 1, 18, 3, 0);
            var currentTime = startTime;
            var endTime = new Date(2019, 0, 1, 18, 40, 0);
            // 以 N 倍速播放
            var speed = 5;
            var resetTime = false;
            var last_timestamp;
            var timeDelay = 0;
            var playing = true;

            var pauseButton;

            map.on('load', function() {
                pauseButton = document.getElementById('pause');

                var imageSource = {
                    'body': 'images/body.png',
                    'high_head': 'images/high_head.png',
                    'high_tail': 'images/high_tail.png',
                    'normal_head': 'images/normal_head.png',
                    'normal_tail': 'images/normal_tail.png',
                }

                for(var imageName in imageSource) {
                    (function(tmp) {
                        map.loadImage(imageSource[tmp], function (error, image) {
                            if (error) {
                                throw error;
                            }
                            map.addImage(tmp, image);
                        });
                    })(imageName);
                }

                map.addSource('train_source', {
                    type: 'geojson',
                    data: {
                        "type": "FeatureCollection",
                        "features": []
                    }
                });

                map.addLayer({
                    'id': 'train_layer',
                    'type': 'symbol',
                    'source': 'train_source',
                    'layout': {
                        'icon-image': ["get", "train_type"],
                        'icon-allow-overlap': true,
                        'icon-ignore-placement': true,
                        'icon-rotation-alignment': 'map',
                        'icon-rotate': ["get", "icon_rotate"],
                        'icon-size': [
                            "interpolate",
                            ["linear"],
                            ["zoom"],
                            13, 0.2,
                            16, 0.5,
                            17, 0.9,
                            18.2, 2
                        ],
                    },
                    'paint': {}
                }, 'bridge-pedestrian-case');

                animateTrain();

                pauseButton.addEventListener('click', function() {
                    if (playing) {
                        cancelAnimationFrame(animation);
                        pauseButton.innerHTML = "Play<br>" + currentTime.toLocaleTimeString('en-US');
                    } else {
                        resetTime = true;
                        animateTrain();
                    }
                    playing = !playing;
                });

                function animateTrain(timestamp) {
                    if (timestamp !== undefined) {
                        if (resetTime) {
                            timeDelay = timeDelay + timestamp - last_timestamp;
                            resetTime = false;
                        }

                        timeChange = ((timestamp-timeDelay) * speed) % (endTime.getTime() - startTime.getTime());

                        currentTime = new Date(startTime.getTime() + timeChange);
                        last_timestamp = timestamp;

                        pauseButton.innerHTML = "Pause<br>" + currentTime.toLocaleTimeString('en-US');
                    }

                    var updatedFeatures = [];

                    trains.forEach(t => {
                        var tmp = t.getRealTimeLocation(currentTime);
                        updatedFeatures.push.apply(updatedFeatures, tmp);
                    });

                    map.getSource('train_source').setData({
                        "type": "FeatureCollection",
                        "features": updatedFeatures
                    });

                    if (currentTime >= endTime) {
                        console.log("one turn end.");
                    }

                    animation = requestAnimationFrame(animateTrain);
                }
            });
        </script>
    </body>
</html>