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Add example for polygon vertices styling

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tsauerwein
2015-01-27 10:02:28 +01:00
parent 5c9b17a3b2
commit 48cf51a7ca
2 changed files with 158 additions and 0 deletions
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examples/polygon-styles.html Normal file
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
<link rel="stylesheet" href="../css/ol.css" type="text/css">
<link rel="stylesheet" href="../css/ol.css" type="text/css">
<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap.min.css" type="text/css">
<link rel="stylesheet" href="../resources/layout.css" type="text/css">
<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap-responsive.min.css" type="text/css">
<title>Custom styles for polygons</title>
<style>
.map {
background: grey;
}
</style>
</head>
<body>
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<a class="brand" href="./"><img src="../resources/logo.png"> OpenLayers 3 Examples</a>
</div>
</div>
</div>
<div class="container-fluid">
<div class="row-fluid">
<div class="span12">
<div id="map" class="map"></div>
</div>
</div>
<div class="row-fluid">
<div class="span12">
<h4 id="title">Custom styles for polygons</h4>
<p id="shortdesc">Showing the vertices of a polygon with a custom style geometry.</p>
<div id="docs">
<p>See the <a href="polygon-styles.js" target="_blank">polygon-styles.js source</a> to see how this is done.</p>
</div>
<div id="tags">polygon, vector, style, GeometryFunction</div>
</div>
</div>
</div>
<script src="../resources/jquery.min.js" type="text/javascript"></script>
<script src="loader.js?id=polygon-styles" type="text/javascript"></script>
<script src="../resources/example-behaviour.js" type="text/javascript"></script>
</body>
</html>

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examples/polygon-styles.js Normal file
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goog.require('ol.Map');
goog.require('ol.View');
goog.require('ol.geom.MultiPoint');
goog.require('ol.layer.Vector');
goog.require('ol.source.GeoJSON');
goog.require('ol.style.Circle');
goog.require('ol.style.Fill');
goog.require('ol.style.Stroke');
goog.require('ol.style.Style');
var styles = [
/* We are using two different styles for the polygons:
* - The first style is for the polygons themselves.
* - The second style is to draw the vertices of the polygons.
* In a custom `geometry` function the vertices of a polygon are
* returned as `MultiPoint` geometry, which will be used to render
* the style.
*/
new ol.style.Style({
stroke: new ol.style.Stroke({
color: 'blue',
width: 3
}),
fill: new ol.style.Fill({
color: 'rgba(0, 0, 255, 0.1)'
})
}),
new ol.style.Style({
image: new ol.style.Circle({
radius: 5,
fill: new ol.style.Fill({
color: 'orange'
})
}),
geometry: function(feature) {
// return the coordinates of the first ring of the polygon
var coordinates = feature.getGeometry().getCoordinates()[0];
return new ol.geom.MultiPoint(coordinates);
}
})
];
var source = new ol.source.GeoJSON(/** @type {olx.source.GeoJSONOptions} */ ({
object: {
'type': 'FeatureCollection',
'crs': {
'type': 'name',
'properties': {
'name': 'EPSG:3857'
}
},
'features': [
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [[[-5e6, 6e6], [-5e6, 8e6], [-3e6, 8e6],
[-3e6, 6e6], [-5e6, 6e6]]]
}
},
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [[[-2e6, 6e6], [-2e6, 8e6], [0, 8e6],
[0, 6e6], [-2e6, 6e6]]]
}
},
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [[[1e6, 6e6], [1e6, 8e6], [3e6, 8e6],
[3e6, 6e6], [1e6, 6e6]]]
}
},
{
'type': 'Feature',
'geometry': {
'type': 'Polygon',
'coordinates': [[[-2e6, -1e6], [-1e6, 1e6],
[0, -1e6], [-2e6, -1e6]]]
}
}
]
}
}));
var layer = new ol.layer.Vector({
source: source,
style: styles
});
var map = new ol.Map({
layers: [layer],
target: 'map',
view: new ol.View({
center: [0, 1000000],
zoom: 2
})
});