智慧交通道路事件情况

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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>智慧交通道路事件情况</title>
    <style>
        html,
        body,
        #map {
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
        }
        
        .demo-title {
            position: absolute;
            top: 25px;
            left: 25px;
            z-index: 1;
        }

        h1 {
            font-size: 18px;
            margin: 0;
            color: rgb(180, 180, 190);
        }

        h3 {
            font-size: 12px;
            font-weight: normal;
            margin-top: 5px;
            color: rgb(150,150,150);
        }
    </style>
</head>

<body>
    <div class="demo-title">
        <h1>图标点-智慧交通道路事件情况</h1>
        <h3>某一时刻检测道路的交通事件情况，通过数据分布对实时交通进行治理和管控</h3>
    </div>
    <div id="map"></div>
    <script src="http://webapi.amap.com/maps?v=2.0&key=您申请的key值&plugin=AMap.Scale,AMap.ToolBar"></script>
    <script src="http://webapi.amap.com/loca?v=2.0.0&key=您申请的key值"></script>
    <script src="http://a.amap.com/Loca/static/loca-v2/demos/mock_data/events.js"></script>
    <script>
        var map = new AMap.Map('map', {
            zoom: 13.54,
            viewMode: '3D',
            center: [116.398063, 39.988207], //北京
            mapStyle: 'amap://styles/45311ae996a8bea0da10ad5151f72979',
        });

        var loca = new Loca.Container({
            map,
        });

        function getTestData() {
            var list = [];
            for (let i = 0; i < 200; i++) {
                let fList = [];
                for (let j = 0; j < 200; j++) {
                    fList.push([
                        Number((115.601 + i * 0.002).toFixed(5)), Number((40.32 + j * 0.002).toFixed(5))
                    ]);
                }
                list.push({
                    "type": "Feature",
                    "properties": {
                        "name": i,
                    },
                    "geometry": {
                        "type": "MultiPoint",
                        "coordinates": fList
                    }
                });
            }
            list.push({
                "type": "Feature",
                "properties": {
                    "name": 'HIIII',
                },
                "geometry": {
                    "type": "Point",
                    "coordinates": [115.201, 40.302]
                }
            })

            var data = {
                "type": "FeatureCollection",
                "features": list,
            };
            return data;
        }

        function getEventsCollection() {
            let _events = events[0].events;
            var list = _events.map(e => {
                let ll = e.lngLat.split(',');
                let arr = [parseFloat(ll[0]), parseFloat(ll[1])]
                return {
                    "type": "Feature",
                    "properties": {
                        rawData: e
                    },
                    "geometry": {
                        "type": "Point",
                        "coordinates": arr
                    }
                }
            })

            var data = {
                "type": "FeatureCollection",
                "features": list,
            };
            return data;
        }
        var data = getEventsCollection();
        var geo = new Loca.GeoJSONSource({
            data: data,
        });

        var layer = new Loca.IconLayer({
            zIndex: 10,
            opacity: 1,
            visible: false,
        });

        var trafficIcons = {
            1: 'http://a.amap.com/Loca/static/loca-v2/demos/images/traffic-control.png',
            2: 'http://a.amap.com/Loca/static/loca-v2/demos/images/jam.png',
            3: 'http://a.amap.com/Loca/static/loca-v2/demos/images/construction.png',
            4: 'http://a.amap.com/Loca/static/loca-v2/demos/images/close.png',
            5: 'http://a.amap.com/Loca/static/loca-v2/demos/images/fog.png',
            0: 'http://a.amap.com/Loca/static/loca-v2/demos/images/accident.png',
        };
        layer.setSource(geo);
        layer.setStyle({
            unit: 'px',
            icon: (index, feature) => {
                let data = feature.properties.rawData;
                let url = trafficIcons[data.type % Object.keys(trafficIcons).length];
                return url;
            },
            iconSize: [40,40],
            offset: [0, -40],
            rotation: 0,
        })

        loca.add(layer);
        map.on('complete', function () {
            setTimeout(function () {
                layer.show();
                layer.addAnimate({
                    key: 'offset',
                    value: [0, 1],
                    easing: 'Linear',
                    transform: 500,
                    random: true,
                    delay: 9000,
                });
                layer.addAnimate({
                    key: 'iconSize',
                    value: [0, 1],
                    easing: 'Linear',
                    transform: 500,
                    random: true,
                    delay: 9000,
                });
            }, 800);
        });
        loca.animate.start();

        // 拾取测试
        map.on('click', (e) => {
            const feat = layer.queryFeature(e.pixel.toArray());
            // console.log('feat', feat);
            if (feat) {
                layer.setStyle({
                    unit: 'px',
                    icon: (index, feature) => {
                        let data = feature.properties.rawData;
                        let url = trafficIcons[data.type % Object.keys(trafficIcons).length];
                        return url;
                    },
                    iconSize: (i, feature) => {
                        if (feature === feat) {
                            return [60, 60];
                        }
                        return [40, 40];
                    },
                });
            }
        });

        var dat = new Loca.Dat();
        dat.addLayer(layer);

    </script>
</body>

</html>
        
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