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- <!--********************************************************************
- * Copyright© 2000 - 2021 SuperMap Software Co.Ltd. All rights reserved.
- *********************************************************************-->
- <!DOCTYPE html>
- <html lang="en-US">
- <head>
- <meta charset="UTF-8">
- <meta http-equiv="X-UA-Compatible" content="IE=Edge">
- <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
- <title data-i18n="resources.title_graphicLayerClovers"></title>
- <script type="text/javascript" src="../js/include-web.js"></script>
- <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
- <style>
- .ol-popup {
- position: absolute;
- background-color: white;
- -webkit-filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
- filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
- padding: 15px;
- border-radius: 10px;
- border: 1px solid #cccccc;
- bottom: 12px;
- left: -50px;
- min-width: 50px;
- }
- .ol-popup:after,
- .ol-popup:before {
- top: 100%;
- border: solid transparent;
- content: " ";
- height: 0;
- width: 0;
- position: absolute;
- pointer-events: none;
- }
- .ol-popup:after {
- border-top-color: white;
- border-width: 10px;
- left: 48px;
- margin-left: -10px;
- }
- .ol-popup:before {
- border-top-color: #cccccc;
- border-width: 11px;
- left: 48px;
- margin-left: -11px;
- }
- </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 id="popup-content"></div>
- </div>
- <script type="text/javascript">
- var url = (window.isLocal ? window.server : "https://iserver.supermap.io") +
- "/iserver/services/map-china400/rest/maps/China_4326";
- //初始化各种参数
- var count = 180000;
- var graphics = [];
- var e = 60;
- var clovers = [];
- var radius = [10, 14, 18];
- var styles = [{
- angle: 60,
- count: 3
- }, {
- angle: 45,
- count: 4
- }, {
- angle: 30,
- count: 6
- }];
- //三叶草样式的种类
- var randCount = 9;
- var symbolCount = radius.length * styles.length;
- new ol.supermap.MapService(url).getMapInfo(function (serviceResult) {
- var mapJSONObj = serviceResult.result;
- var container = document.getElementById('popup');
- var content = document.getElementById('popup-content');
- var overlay = new ol.Overlay(({
- element: container,
- autoPan: true,
- autoPanAnimation: {
- duration: 250
- }
- }));
- var map = new ol.Map({
- target: 'map',
- controls: ol.control.defaults({
- attributionOptions: {
- collapsed: false
- }
- })
- .extend([new ol.supermap.control.Logo()]),
- view: new ol.View({
- center: [0, 0],
- zoom: 7,
- projection: 'EPSG:4326',
- multiWorld: true
- }),
- overlays: [overlay]
- });
- var options = ol.source.TileSuperMapRest.optionsFromMapJSON(url, mapJSONObj);
- var layer = new ol.layer.Tile({
- source: new ol.source.TileSuperMapRest(options)
- });
- map.addLayer(layer);
- //创建三叶草样式
- for (var i = 0; i < radius.length; i++) {
- for (var j = 0; j < styles.length; j++) {
- clovers.push(
- new ol.style.CloverShape({
- radius: radius[i],
- angle: styles[j].angle,
- count: styles[j].count,
- stroke: new ol.style.Stroke({
- color: "rgba(0,166,0,1)",
- }),
- fill: new ol.style.Fill({
- color: "rgba(0,200,0,0.6)",
- }),
- })
- );
- }
- }
- //设置每个点的经纬度和传入三叶草样式
- for (var i = 0; i < count; i++) {
- var coordinates = [2 * e * Math.random() - e, 2 * e * Math.random() - e];
- graphics[i] = new ol.Graphic(new ol.geom.Point(coordinates));
- graphics[i].setStyle(clovers[Math.floor(Math.random() * randCount)]);
- }
- map.once('postrender', function () {
- var graphicLayer = new ol.layer.Image({
- source: new ol.source.Graphic({
- graphics: graphics,
- render:"canvas",
- map: map,
- onClick: function (graphic) {
- if (graphic) {
- var coords = graphic.getGeometry().getCoordinates();
- content.innerHTML = resources.text_coordinate + ":[" + coords[0] + "," + coords[1] + "]";
- overlay.setPosition(coords);
- return;
- }
- overlay.setPosition(undefined);
- }
- })
- });
- map.addLayer(graphicLayer);
- })
- });
- </script>
- </body>
- </html>
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