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137 lines
3.8 KiB
HTML
137 lines
3.8 KiB
HTML
2 weeks ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Title</title>
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<link rel="stylesheet" href="https://openlayers.org/en/v5.3.0/css/ol.css" />
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<script type="text/javascript" src="https://openlayers.org/en/v5.3.0/build/ol.js"></script>
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<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
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<style type="text/css">
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body, html {
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width: 100%;
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height: 100%;
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margin: 0;
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font-family: "Microsoft YaHei"
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}
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#map, #info {
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width: 60%;
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height: 60%;
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}
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</style>
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</head>
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<body>
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<div id="btn">
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<button id="btnclick" onclick="clickHandler()">框选范围</button>
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</div>
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<div id="map"></div>
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<div id="info">
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<table>
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<tr>
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<td>框选范围:</td>
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<td>左上角坐标:</td>
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<td>经度：<input id="zjd" readonly=“readonly”/></td>
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<td></td>
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<td>右下角坐标:</td>
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<td>经度：<input id="yjd" readonly=“readonly”/></td>
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</tr>
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<tr>
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<td></td>
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<td></td>
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<td>纬度：<input id="zwd" readonly=“readonly”/></td>
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<td></td>
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<td></td>
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<td>纬度：<input id="ywd" readonly=“readonly”/></td>
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</tr>
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</table>
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</div>
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<script>
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var style = new ol.style.Style({
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fill: new ol.style.Fill({
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color: 'rgba(96,96,96, 0.1)'
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}),
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//划线的时候的图样
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stroke: new ol.style.Stroke({
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color: 'red',
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width: 2
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}),
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image: new ol.style.Circle({
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radius: 5,
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stroke: new ol.style.Stroke({
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color: 'rgba(96,96,96, 0.1)'
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}),
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fill: new ol.style.Fill({
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color: 'rgba(96,96,96, 0.1)'
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})
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})
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});
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map = new ol.Map({
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target: 'map',
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layers: [
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new ol.layer.Tile({
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source: new ol.source.OSM()
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})
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],
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view: new ol.View({
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center: ol.proj.transform([120.15, 30.28], 'EPSG:4326', 'EPSG:3857'),
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zoom: 9
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})
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});
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var layer = new ol.layer.Vector({
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source: new ol.source.Vector(),
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style: style
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});
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var draw = new ol.interaction.Draw({
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source: layer.getSource(),
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type: 'Circle',
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style: style,
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geometryFunction: ol.interaction.Draw.createBox()
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});
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function clickHandler(e1) {
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$('#map').bind("click", function (e) {
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var pointermove = $('#map').bind("pointermove", function (e2) {
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var coordinate = ol.proj.transform(map.getEventCoordinate(e2.originalEvent), 'EPSG:3857', 'EPSG:4326');
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$("#yjd").attr("value", coordinate[0].toFixed(2));
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$("#ywd").attr("value", coordinate[1].toFixed(2));
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}).bind("click", function () {
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$("#map").off('pointermove');
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$("#map").off('click');
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});
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if ($("#zjd").val() == "" && $("#zwd").val() == "") {
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var coordinate = ol.proj.transform(map.getEventCoordinate(e.originalEvent), 'EPSG:3857', 'EPSG:4326');
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$("#zjd").attr("value", coordinate[0].toFixed(2));
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$("#zwd").attr("value", coordinate[1].toFixed(2));
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}
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});
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if ("取消框选" == ($("#btnclick").text())) {
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$("#btnclick").text("框选范围");
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$("input").attr("value", "");
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layer.getSource().clear();
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map.removeLayer(layer);
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} else {
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$("#btnclick").text("取消框选");
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map.addInteraction(draw);
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}
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}
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draw.on('drawend', function () {
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map.addLayer(layer);
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map.removeInteraction(draw);
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});
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</script>
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</body>
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</html>
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