07_graphiclayer_canvas.html 6.2 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_graphiclayerCanvas"></title>
  11. <script type="text/javascript" include="randomcolor,papaparse,widgets" src="../js/include-web.js"></script>
  12. <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
  13. <style>
  14. .ol-popup {
  15. position: absolute;
  16. background-color: white;
  17. -webkit-filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
  18. filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
  19. padding: 15px;
  20. border-radius: 10px;
  21. border: 1px solid #cccccc;
  22. bottom: 12px;
  23. left: -50px;
  24. min-width: 50px;
  25. }
  26. .ol-popup:after,
  27. .ol-popup:before {
  28. top: 100%;
  29. border: solid transparent;
  30. content: " ";
  31. height: 0;
  32. width: 0;
  33. position: absolute;
  34. pointer-events: none;
  35. }
  36. .ol-popup:after {
  37. border-top-color: white;
  38. border-width: 10px;
  39. left: 48px;
  40. margin-left: -10px;
  41. }
  42. .ol-popup:before {
  43. border-top-color: #cccccc;
  44. border-width: 11px;
  45. left: 48px;
  46. margin-left: -11px;
  47. }
  48. </style>
  49. </head>
  50. <body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%; position: absolute;top: 0;">
  51. <div id="map" style="width: 100%;height:100%"></div>
  52. <div id="popup" class="ol-popup">
  53. <div id="popup-content"></div>
  54. </div>
  55. <script type="text/javascript">
  56. var url = (window.isLocal ? window.server : "https://iserver.supermap.io") +
  57. "/iserver/services/map-china400/rest/maps/ChinaDark";
  58. var container = document.getElementById('popup');
  59. var content = document.getElementById('popup-content');
  60. var overlay = new ol.Overlay(({
  61. element: container,
  62. autoPan: true,
  63. autoPanAnimation: {
  64. duration: 250
  65. }
  66. }));
  67. var map = new ol.Map({
  68. target: 'map',
  69. controls: ol.control.defaults({
  70. attributionOptions: {
  71. collapsed: false
  72. }
  73. })
  74. .extend([new ol.supermap.control.Logo()]),
  75. view: new ol.View({
  76. center: ol.proj.transform([-73.9286, 40.75], 'EPSG:4326', 'EPSG:3857'),
  77. zoom: 12,
  78. projection: 'EPSG:3857',
  79. multiWorld: true
  80. }),
  81. overlays: [overlay]
  82. });
  83. var colorCount = 10;
  84. var colors = getRandomColors(colorCount);
  85. widgets.loader.showLoader();
  86. $.get('../data/nyc_taxi_18W.csv', function (nycData) {
  87. new ol.supermap.MapService(url).getMapInfo(function (serviceResult) {
  88. var mapJSONObj = serviceResult.result;
  89. var options = ol.source.TileSuperMapRest.optionsFromMapJSON(url, mapJSONObj);
  90. var layer = new ol.layer.Tile({
  91. source: new ol.source.TileSuperMapRest(options)
  92. });
  93. map.addLayer(layer);
  94. var randomCircleStyles = [];
  95. for (var i = 0; i < colorCount; i++) {
  96. randomCircleStyles.push(new ol.style.RegularShape({
  97. radius: Math.floor(Math.random() * 10 + 1),
  98. fill: new ol.style.Fill({
  99. color: colors[i]
  100. }),
  101. stroke: new ol.style.Stroke({
  102. color: colors[i]
  103. }),
  104. points: 3,
  105. }));
  106. }
  107. var features = Papa.parse(nycData, {
  108. skipEmptyLines: true,
  109. header: true
  110. }).data;
  111. var count = features.length; //矢量点的个数
  112. var graphics = new Array(count);
  113. for (var i = 0; i < count; ++i) {
  114. var coordinates = [Number(features[i].X), Number(features[i].Y)];
  115. if (coordinates[0] === coordinates[1]) {
  116. continue;
  117. }
  118. coordinates = ol.proj.transform(coordinates, 'EPSG:4326', 'EPSG:3857');
  119. graphics[i] = new ol.Graphic(new ol.geom.Point(coordinates));
  120. graphics[i].setStyle(randomCircleStyles[Math.floor(Math.random() * colorCount)]);
  121. }
  122. map.once('postrender', function () {
  123. var source = new ol.source.Graphic({
  124. graphics: graphics,
  125. render: "canvas",
  126. map: map,
  127. onClick: function (graphic) {
  128. if (graphic) {
  129. var coords = graphic.getGeometry().getCoordinates();
  130. content.innerHTML = resources.text_coordinate + ":[" + coords[0] + "," + coords[1] + "]";
  131. overlay.setPosition(graphic.getGeometry().getCoordinates());
  132. return;
  133. }
  134. overlay.setPosition(undefined);
  135. }
  136. })
  137. var graphicLayer = new ol.layer.Image({
  138. source: source
  139. });
  140. map.addLayer(graphicLayer);
  141. widgets.loader.removeLoader();
  142. });
  143. });
  144. });
  145. function getRandomColors(count) {
  146. return randomColor({
  147. luminosity: 'bright',
  148. hue: 'random',
  149. alpha: 0.5,
  150. format: 'rgba',
  151. count: count
  152. });
  153. }
  154. </script>
  155. </body>
  156. </html>