shapefile

//画集雨区
function painting_CatchmentAreaDb() {
    var arr = []
    shapefile.open(lin_url+static_SysSettings.CatchmentAreaDb)
        .then(source => source.read()
            .then(function log(result) {
                if (result.done) return;

                arr.push(result.value)
                return source.read().then(log);
            })
        )

        .catch(error => console.error(error.stack));
    setTimeout(function () {
        CatchmentAreaDb_data=arr
        var color_arr = [
            "rgba(0,255,255,0.3)",
            "rgba(255,128,0,0.3)",
            "rgba(255,0,255,0.3)",
            "rgba(255,128,128,0.3)",
            "rgba(154,196,220,0.3)",
            "rgba(154,196,220,0.3)",
            "rgba(153,205,208,0.3)",
            "rgba(153,205,208,0.3)",
            "rgba(152,214,196,0.3)",
            "rgba(152,214,196,0.3)",
            "rgba(151,232,173,0.3)",
        ]
        var _source = new ol.source.Vector({
            features: []
        });

        for (var i = 0; i < CatchmentAreaDb_data.length; i++) {

            var feature = new ol.Feature({
                geometry: new ol.geom.Polygon(CatchmentAreaDb_data[i].geometry.coordinates),
                name: "CatchmentAreaDb_" + i,
            });
            //  设置颜色
            var color = new ol.style.Style({
                stroke: new ol.style.Stroke({
                    color: color_arr[i],
                    width: 0.5
                }),
                fill: new ol.style.Fill({
                    color: color_arr[i]
                })
            });
            feature.setStyle(color)
            _source.addFeature(feature)
        }
        CatchmentAreaDb.setSource(_source);
    }, 1000)


}