e3d137754c
git-svn-id: http://svn.openlayers.org/trunk/openlayers@11616 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
71 lines
2.2 KiB
JavaScript
71 lines
2.2 KiB
JavaScript
var map, vectorLayer, drawFeature, features
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map = new OpenLayers.Map('map', {
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eventListeners: {
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movestart: function() {
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console.time("move");
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},
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moveend: function() {
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console.timeEnd("move");
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}
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}
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});
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// allow testing of specific renderers via "?renderer=Canvas", etc
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var renderer = OpenLayers.Util.getParameters(window.location.href).renderer;
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renderer = (renderer) ? [renderer] : OpenLayers.Layer.Vector.prototype.renderers;
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vectorLayer = new OpenLayers.Layer.Vector("Vector Layer", {
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isBaseLayer: true,
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renderers: renderer,
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eventListeners: {
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beforefeaturesadded: function() {
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console.time("addFeatures");
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},
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featuresadded: function() {
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console.timeEnd("addFeatures");
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}
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}
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});
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map.addLayers([vectorLayer]);
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map.addControl(new OpenLayers.Control.MousePosition());
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map.setCenter(new OpenLayers.LonLat(0, 0), 2);
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features = new Array(500);
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var x, y, points
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for (var i = 0; i < 500; i++) {
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x = 90-Math.random()*180;
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y = 45-Math.random()*90;
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var pointList = [];
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for(var p=0; p<19; ++p) {
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var a = p * (2 * Math.PI) / 20;
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var r = Math.random() * 3 + 1;
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var newPoint = new OpenLayers.Geometry.Point(x + (r * Math.cos(a)),
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y + (r * Math.sin(a)));
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pointList.push(newPoint);
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}
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pointList.push(pointList[0]);
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features[i] = new OpenLayers.Feature.Vector(
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new OpenLayers.Geometry.LinearRing(pointList));
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}
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vectorLayer.addFeatures(features);
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var select = document.getElementById("renderers");
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var renderers = OpenLayers.Layer.Vector.prototype.renderers;
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var option;
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for (var i=0, len=renderers.length; i<len; i++) {
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if (OpenLayers.Renderer[renderers[i]].prototype.supported()) {
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option = document.createElement("option");
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option.textContent = renderers[i];
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option.value = renderers[i];
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option.selected = renderers[i] == vectorLayer.renderer.CLASS_NAME.split(".").pop();
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select.appendChild(option);
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}
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}
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select.onchange = function() {
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window.location.href = window.location.href.split("?")[0] +
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"?renderer=" + select.options[select.selectedIndex].value;
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}
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