OpenLayers获取拖拽图形后的所有坐标

0 投票
<html>
<head>
    <meta charset="UTF-8">
    <title data-i18n="resources.title_dragFeatures"></title>
    <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
    <style>
        .ol-popup {
            position: absolute;
            top: 50px;
            right: 20px;
        }
    </style>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%;position: absolute;top: 0;">
<div id="map" style="width: 100%;height:100%"></div>
<div id="popup" class="ol-popup">
    <div class="btn-group" role="group" aria-label="...">
        <button id="drag" value='Drag' type="button" class="btn btn-default" data-i18n="resources.btn_drag"></button>
        <button id="none" value='None' type="button" class="btn btn-default" data-i18n="resources.text_input_value_notDrag"></button>
    </div>
</div>
<script type="text/javascript" include="jquery,bootstrap" src="../js/include-web.js"></script>
<script type="text/javascript">
    var map, select, drag, source,
        baseUrl = (window.isLocal ? window.server : "https://iserver.supermap.io") + "/iserver/services/map-world/rest/maps/World",
        url = (window.isLocal ? window.server : "https://iserver.supermap.io") + "/iserver/services/data-world/rest/data";
    map = new ol.Map({
        target: 'map',
        controls: ol.control.defaults({attributionOptions: {collapsed: false}})
            .extend([new ol.supermap.control.Logo()]),
        view: new ol.View({
            center: [116, 30],
            zoom: 4,
            projection: 'EPSG:4326',
            multiWorld: true
        })
    });
    var layer = new ol.layer.Tile({
        source: new ol.source.TileSuperMapRest({
            url: baseUrl,
            wrapX: true
        }),
        projection: 'EPSG:4326'
    });
    map.addLayer(layer);
    var sqlParam = new SuperMap.GetFeaturesBySQLParameters({
        queryParameter: {
            name: "Countries@World",
            attributeFilter: "SMID = 247"
        },
        datasetNames: ["World:Countries"]
    });
    new ol.supermap.FeatureService(url).getFeaturesBySQL(sqlParam, function (serviceResult) {
        source = new ol.source.Vector({
            features: (new ol.format.GeoJSON()).readFeatures(serviceResult.result.features),
            wrapX: false
        });
        map.addLayer(new ol.layer.Vector({
            source: source
        }));
    });
    var info = new ol.control.Control({element: document.getElementById('popup')});
    info.setMap(map);
    map.addControl(info);

    var buttons = $('.btn-group').children();
    buttons.map(function (key) {
        var value = buttons[key].value;
        if (value === 'None') {
            $(buttons[key]).on('click', function () {
                clearInteraction();
            });
            return;
        }
        $(buttons[key]).on('click', function () {
            clearInteraction();
            select = new ol.interaction.Select({
                wrapX: false
            });
            drag = new ol.interaction.Translate({
                features: select.getFeatures()
            });
            
            drag.on('translateend', function (f) {
                let obj = {};
                obj.features=f.features;
                obj.coordinate=f.coordinate;
                console.log(f);
            });
            map.removeInteraction(drag);
            map.addInteraction(select);
            map.addInteraction(drag);
        });
    });

    function clearInteraction() {
        if (drag) {
            map.removeInteraction(drag);
        }
        if (select) {
            map.removeInteraction(select);
        }
    }

</script>
</body>
</html>

以上在超图示例基础上,添加了个拖拽完毕事件,现在想获取拖拽后的所有坐标,存储数据库,方便下次根据坐标连成线区域!

现在获取的还是最之前的信息!

5月 15 分类:  36次浏览 | 用户: babyn~ (7 分)

1个回答

0 投票
您好,本机做了测试是geometry是通过监听

 

      drag.on('translateend', function (f) {
            console.log(f.features.array_[0].getGeometry(),'array_')

            });

拿到了变化位置的geometry,因为您当前获取是属性信息因此没有变化,geometry的信息是发生改变的,
5月 18 用户: 阳俊林 名扬四海 (2,567 分)
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