07_graphiclayer_image.html 3.6 KB

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  1. <!--********************************************************************
  2. * Copyright© 2000 - 2021 SuperMap Software Co.Ltd. All rights reserved.
  3. *********************************************************************-->
  4. <!DOCTYPE html>
  5. <html lang="en-US">
  6. <head>
  7. <meta charset="UTF-8">
  8. <meta http-equiv="X-UA-Compatible" content="IE=Edge">
  9. <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
  10. <title data-i18n="resources.title_graphicLayerTaxi"></title>
  11. <script type="text/javascript" include="papaparse,widgets" src="../js/include-web.js"></script>
  12. <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
  13. </head>
  14. <body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%; position: absolute;top: 0;">
  15. <div id="map" style="width: 100%;height:100%"></div>
  16. <script type="text/javascript">
  17. var url = (window.isLocal ? window.server : "https://iserver.supermap.io") + "/iserver/services/map-china400/rest/maps/ChinaDark",
  18. map = new ol.Map({
  19. target: 'map',
  20. controls: ol.control.defaults({attributionOptions: {collapsed: false}})
  21. .extend([new ol.supermap.control.Logo()]),
  22. view: new ol.View({
  23. center: ol.proj.transform([-73.9286, 40.75], 'EPSG:4326', 'EPSG:3857'),
  24. zoom: 12,
  25. projection: 'EPSG:3857',
  26. multiWorld: true
  27. })
  28. });
  29. loadData();
  30. function loadData() {
  31. widgets.loader.showLoader();
  32. $.get('../data/nyc_taxi_18W.csv', function (nycData) {
  33. new ol.supermap.MapService(url).getMapInfo(function (serviceResult) {
  34. widgets.loader.removeLoader();
  35. var mapJSONObj = serviceResult.result;
  36. var options = ol.source.TileSuperMapRest.optionsFromMapJSON(url, mapJSONObj);
  37. var layer = new ol.layer.Tile({
  38. source: new ol.source.TileSuperMapRest(options)
  39. });
  40. map.addLayer(layer);
  41. var img = new Image();
  42. img.src = '../img/taxi.png';
  43. img.onload = function () {
  44. var imageStyle = new ol.style.Icon(({
  45. img: this,
  46. size: [32, 32],
  47. imgSize: [32, 32]
  48. }));
  49. var features = Papa.parse(nycData, {skipEmptyLines: true, header: true}).data;
  50. var counts = features.length; //矢量点的个数
  51. var graphics = new Array(counts);
  52. for (var i = 0; i < counts; ++i) {
  53. var coordinates = [Number(features[i].X), Number(features[i].Y)];
  54. if (coordinates[0] === coordinates[1]) {
  55. continue;
  56. }
  57. coordinates = ol.proj.transform(coordinates, 'EPSG:4326', 'EPSG:3857');
  58. graphics[i] = new ol.Graphic(new ol.geom.Point(coordinates));
  59. graphics[i].setStyle(imageStyle);
  60. }
  61. map.once('postrender', function () {
  62. var graphicLayer = new ol.layer.Image({
  63. source: new ol.source.Graphic({
  64. graphics: graphics,
  65. render: "canvas",
  66. map: map
  67. })
  68. });
  69. map.addLayer(graphicLayer);
  70. })
  71. }
  72. });
  73. });
  74. }
  75. </script>
  76. </body>
  77. </html>