<!--
 * 点密度专题图用一定大小、形状相同的点表示现象分布范围、数量特征和分布密度。
 * 点的多少和所代表的意义由地图的内容决定。
 * 点密度专题图使用点的数目或者密集程度来反映一个区域或范围所对应的专题值。
 * @Author: jiangbotao
 * @Date: 2019-12-10 14:16:04
 * @LastEditors: jiangbotao
 * @LastEditTime: 2019-12-10 17:25:54
 * @FilePath: \mymapbox\src\components\Map_filter_sql.vue
 -->
<template>
    <div >
        <div id="map"></div>
    </div>
</template>

<script>
import mapboxgl from 'mapbox-gl';
import { Logo, FeatureService, QueryService, ThemeService } from '@supermap/iclient-mapboxgl';
export default {
    name: 'HelloWorld',
    data () {
        return {
        
        }
    },
    mounted(){ 
        var map, host = "http://support.supermap.com.cn:8090";
        var url = host + "/iserver/services/map-world/rest/maps/World";
        var dataUrl = host + "/iserver/services/map-world/rest/maps/World";

        var map = new mapboxgl.Map({
            container: 'map',
            style: {
                "version": 8,
                "sources": {
                    "raster-tiles": {
                        "attribution": 'attribution',
                        "type": "raster",
                        "tiles": [host + '/iserver/services/maps/rest/maps/World/zxyTileImage.png?prjCoordSys={"epsgCode":3857}&z={z}&x={x}&y={y}'],
                        "tileSize": 256,
                    },
                },
                "layers": [{
                    "id": "simple-tiles",
                    "type": "raster",
                    "source": "raster-tiles",
                    "minzoom": 0,
                    "maxzoom": 22
                }],
            },
            center: [108.94, 34.34],
            maxZoom: 18,
            zoom: 2
        });
        map.addControl(new Logo(), 'bottom-right');
        map.addControl(new mapboxgl.NavigationControl(), 'top-left');

        map.on('load', function () {
            createTheme();
        });

        function createTheme() {
            var themeDotDensity = new SuperMap.ThemeDotDensity({
                dotExpression: "Pop_1994",
                value: 5000000,
                style: new SuperMap.ServerStyle({
                    markerSize: 3,
                    markerSymbolID: 12
                })
            });
            var themeParameters = new SuperMap.ThemeParameters({
                themes: [themeDotDensity],
                datasetNames: ["Countries"],
                dataSourceNames: ["World"]
            });

            var themeService = new ThemeService(dataUrl);
            themeService.getThemeInfo(themeParameters, function (serviceResult) {
                var result = serviceResult.result;
                console.log(result);
                if (result && result.newResourceID) {
                    map.addSource("theme", {
                        "type": 'raster',
                        "tiles": ['http://support.supermap.com.cn:8090/iserver/services/maps/rest/maps/World/zxyTileImage.png?z={z}&x={x}&y={y}&transparent=true&cacheEnabled=false&noWrap=true&layersID=' + result.newResourceID],
                        "tileSize": 256,
                    });
                    map.addLayer({
                        "id": "themeLayer",
                        "type": "raster",
                        "source": "theme",
                    });
                }
            })
        }
    }
}
</script>

<style scoped>
#map {
    position: absolute;
    height: 100%;
    width: 100%;
    background-color: white
}
</style>