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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<title>OpenLayers Rotate Features Example</title>
<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<style type="text/css">
p {
width: 500px;
}
</style>
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript">
var map, pointFeature, lineFeature, polygonFeature;
function init(){
map = new OpenLayers.Map('map');
var layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
"http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} );
map.addLayer(layer);
var style_blue = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']);
style_blue.strokeColor = "blue";
style_blue.fillColor = "blue";
var style_green = {
strokeColor: "#339933",
strokeOpacity: 1,
strokeWidth: 3,
pointRadius: 6,
pointerEvents: "visiblePainted"
};
var vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry");
// create a point feature
var point = new OpenLayers.Geometry.Point(-110, 45);
pointFeature = new OpenLayers.Feature.Vector(point, null, style_blue);
// create a line feature from a list of points
var pointList = [];
var newPoint = point;
for(var p=0; p<5; ++p) {
newPoint = new OpenLayers.Geometry.Point(newPoint.x + Math.random(1),
newPoint.y + Math.random(1));
pointList.push(newPoint);
}
lineFeature = new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.LineString(pointList),null,style_green);
// create a polygon feature from a linear ring of points
var pointList = [];
for(var p=0; p<6; ++p) {
var a = p * (2 * Math.PI) / 7;
var r = Math.random(1) + 1;
var newPoint = new OpenLayers.Geometry.Point(point.x + (r * Math.cos(a)),
point.y + (r * Math.sin(a)));
pointList.push(newPoint);
}
pointList.push(pointList[0]);
var linearRing = new OpenLayers.Geometry.LinearRing(pointList);
polygonFeature = new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Polygon([linearRing]));
map.addLayer(vectorLayer);
map.setCenter(new OpenLayers.LonLat(point.x, point.y), 5);
vectorLayer.addFeatures([pointFeature, lineFeature, polygonFeature]);
// start rotating
var origin = new OpenLayers.Geometry.Point(-111.04, 45.68);
var style = {
strokeColor: "#666666",
strokeOpacity: 1,
strokeWidth: 1,
pointRadius: 2,
pointerEvents: "visiblePainted"
};
var center = new OpenLayers.Feature.Vector(origin, null, style);
vectorLayer.addFeatures([center]);
window.setInterval(function() {rotateFeature(
pointFeature, 360 / 20, origin)}, 100);
window.setInterval(function() {rotateFeature(
lineFeature, 360 / 40, origin)}, 100);
window.setInterval(function(){rotateFeature(
polygonFeature, -360 / 20, origin)}, 100);
}
function rotateFeature(feature, angle, origin) {
feature.geometry.rotate(angle, origin);
feature.layer.drawFeature(feature);
}
</script>
</head>
<body onload="init()">
<h1 id="title">Rotate vector features</h1>
<div id="tags">
vector, feature, rotating, rotation, rotate, advanced, light
</div>
<p id="shortdesc">
Details on how to create and rotate vector features programmatically
</p>
<div id="map" class="smallmap"></div>
<div id="docs">This example shows a few features rotating. There is not yet a control
built that provides a tool for rotating, but the geometry.rotate method
can be accessed to rotate programmatically.</div>
</body>
</html>
|
