02_getFeatureByBuffer.html 2.8 KB

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  1. <!--********************************************************************
  2. * Copyright© 2000 - 2021 SuperMap Software Co.Ltd. All rights reserved.
  3. *********************************************************************-->
  4. <!DOCTYPE html>
  5. <html>
  6. <head>
  7. <meta charset="UTF-8">
  8. <title data-i18n="resources.title_getFeatureByBuffer"></title>
  9. <script type="text/javascript" src="../js/include-web.js"></script>
  10. <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
  11. </head>
  12. <body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%; position: absolute;top: 0;">
  13. <div id="map" style="width: 100%;height:100%"></div>
  14. <script type="text/javascript">
  15. var map, vectorLayer, resultLayer,
  16. baseUrl = (window.isLocal ? window.server : "https://iserver.supermap.io")+"/iserver/services/map-world/rest/maps/World",
  17. url = (window.isLocal ? window.server : "https://iserver.supermap.io")+"/iserver/services/data-world/rest/data";
  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: [-10, 15],
  24. zoom: 3,
  25. projection: 'EPSG:4326',
  26. multiWorld: true
  27. })
  28. });
  29. var layer = new ol.layer.Tile({
  30. source: new ol.source.TileSuperMapRest({
  31. url: baseUrl
  32. }),
  33. projection: 'EPSG:4326'
  34. });
  35. map.addLayer(layer);
  36. query();
  37. function query() {
  38. var polygon = new ol.geom.Polygon([[[-20, 20], [-20, -20], [20, -20], [20, 20], [-20, 20]]]);
  39. var polygonSource = new ol.source.Vector({
  40. features: [new ol.Feature(polygon)],
  41. wrapX: false
  42. });
  43. vectorLayer = new ol.layer.Vector({
  44. source: polygonSource,
  45. style: new ol.style.Style({
  46. stroke: new ol.style.Stroke({
  47. color: 'red',
  48. width: 3
  49. }),
  50. fill: new ol.style.Fill({
  51. color: 'rgba(0, 0, 255, 0.1)'
  52. })
  53. })
  54. });
  55. map.addLayer(vectorLayer);
  56. var bufferParam = new SuperMap.GetFeaturesByBufferParameters({
  57. datasetNames: ["World:Capitals"],
  58. bufferDistance: 30,
  59. geometry: polygon
  60. });
  61. new ol.supermap.FeatureService(url).getFeaturesByBuffer(bufferParam, function (serviceResult) {
  62. var vectorSource = new ol.source.Vector({
  63. features: (new ol.format.GeoJSON()).readFeatures(serviceResult.result.features),
  64. wrapX: false
  65. });
  66. resultLayer = new ol.layer.Vector({
  67. source: vectorSource
  68. });
  69. map.addLayer(resultLayer);
  70. });
  71. }
  72. </script>
  73. </body>
  74. </html>