8W+ polygons echarts polygons3D配置项内容和展示

8万+ 房屋数据绘制测试

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    '/asset/get/s/data-1528175656654-B1bV25Xx7.json',
    '/asset/get/s/data-1528175661551-HJLN39XgX.json',
]
// var buildsData=[];

var len = urls.length;
var index = 0;

function getJson(idx) {
    var url = urls[idx];
    $.getJSON(url, function(buildingsGeoJSON) {
        var builds;
        if (buildingsGeoJSON.features) {
            buildingsGeoJSON = buildingsGeoJSON.features;
            builds = buildingsGeoJSON.map(function(feature) {
                feature.properties.name = feature.id;
                return feature;

            })
        } else {
            builds = buildingsGeoJSON.map(function(feature) {
                return {
                    "type": "Feature",
                    "properties": {
                        "name": Math.random().toString(),
                        "height": feature.height || 100
                    },
                    "geometry": {
                        "type": "Polygon",
                        "coordinates": [feature.polygon]
                    }
                }
            })
        }
        var regionsData = builds.map(function(feature) {
            return {
                name: feature.properties.name || feature.properties.id,
                value: Math.random() * 1,
                height: feature.properties.height || 20,
                coords: feature.geometry.coordinates,
                itemStyle: {
                    color: '#0991A9',
                    borderColor: 'red'
                }
            };
        });
        // buildsData=buildsData.concat(regionsData);
        index++;
        if (index < len) {
            myChart.appendData({
                seriesIndex: 0,
                data: regionsData
            });
            getJson(index);
        } else {
            //initCharts(index);
        }
    })
}

function initCharts() {
    myChart.hideLoading();
    // console.log(buildsData.length)
    myChart.setOption({
        maptalks3D: {
            center: [-73.95030490354111, 40.803038109236724],
            zoom: 14,
            pitch: 63.8,
            bearing: -167.2,
            urlTemplate: 'http://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png',
            postEffect: {
                enable: true,
                FXAA: {
                    enable: true
                }
            },
            light: {
                main: {
                    intensity: 1,
                    shadow: false,
                    shadowQuality: 'high'
                },
                ambient: {
                    intensity: 0.
                },
                ambientCubemap: {
                    texture: '/asset/get/s/data-1491838644249-ry33I7YTe.hdr',
                    exposure: 1,
                    diffuseIntensity: 0.5,
                    specularIntensity: 2
                }
            }
        },
        series: [{
            type: 'polygons3D',
            coordinateSystem: 'maptalks3D',
            // multiPolygon: true,
            // map: 'buildings',
            data: [], //buildsData,
            shading: 'realistic',
            instancing: true,
            silent: true,
            itemStyle: {
                color: '#000000',
                // borderColor: [0, 2, 10],
                borderWidth: 1
            },
            realisticMaterial: {
                metalness: 1,
                roughness: 0.4
            }

        }]
    });
    window.addEventListener('resize', function() {
        myChart.resize();
    });

}
initCharts();
// myChart.showLoading();
getJson(0)