380 lines
11 KiB
HTML
380 lines
11 KiB
HTML
<!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="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css" type="text/css">
|
|
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" type="text/css">
|
|
<link rel="stylesheet" href="./resources/prism/prism.css" type="text/css">
|
|
<link rel="stylesheet" href="../css/ol.css" type="text/css">
|
|
<link rel="stylesheet" href="./resources/layout.css" type="text/css">
|
|
|
|
|
|
<script src="./resources/zeroclipboard/ZeroClipboard.min.js"></script>
|
|
<title>Icon sprites with WebGL example</title>
|
|
</head>
|
|
<body>
|
|
|
|
<header class="navbar" role="navigation">
|
|
<div class="container" id="navbar-inner-container">
|
|
<a class="navbar-brand" href="./"><img src="./resources/logo-70x70.png"> OpenLayers 3 Examples</a>
|
|
</div>
|
|
</header>
|
|
|
|
<div class="container-fluid">
|
|
|
|
<div class="row-fluid">
|
|
<div class="span12">
|
|
<div id="map" class="map"></div>
|
|
<div class="span2 offset2 pull-right">
|
|
<div id="info" class="alert alert-success">
|
|
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
<div class="row-fluid">
|
|
<div class="span12">
|
|
<h4 id="title">Icon sprites with WebGL example</h4>
|
|
<p id="shortdesc">Icon sprite with WebGL</p>
|
|
<div id="docs"><p>In this example a sprite image is used for the icon styles. Using a sprite is required to get good performance with WebGL.</p>
|
|
</div>
|
|
<div id="tags">webgl, icon, sprite, vector, point</div>
|
|
<div id="api-links">Related API documentation: <ul class="inline"><li><a href="../apidoc/ol.Feature.html" title="API documentation for ol.Feature">ol.Feature</a></li>,<li><a href="../apidoc/ol.Map.html" title="API documentation for ol.Map">ol.Map</a></li>,<li><a href="../apidoc/ol.View.html" title="API documentation for ol.View">ol.View</a></li>,<li><a href="../apidoc/ol.geom.Point.html" title="API documentation for ol.geom.Point">ol.geom.Point</a></li>,<li><a href="../apidoc/ol.layer.Vector.html" title="API documentation for ol.layer.Vector">ol.layer.Vector</a></li>,<li><a href="../apidoc/ol.source.Vector.html" title="API documentation for ol.source.Vector">ol.source.Vector</a></li>,<li><a href="../apidoc/ol.style.Icon.html" title="API documentation for ol.style.Icon">ol.style.Icon</a></li>,<li><a href="../apidoc/ol.style.Style.html" title="API documentation for ol.style.Style">ol.style.Style</a></li></ul></div>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="row-fluid">
|
|
<div id="source-controls">
|
|
<a id="copy-button"><i class="fa fa-clipboard"></i> Copy</a>
|
|
<a id="jsfiddle-button"><i class="fa fa-jsfiddle"></i> Edit</a>
|
|
</div>
|
|
<form method="POST" id="jsfiddle-form" target="_blank" action="http://jsfiddle.net/api/post/jquery/1.11.0/">
|
|
<textarea class="hidden" name="js">var iconInfo = [{
|
|
offset: [0, 0],
|
|
opacity: 1.0,
|
|
rotateWithView: true,
|
|
rotation: 0.0,
|
|
scale: 1.0,
|
|
size: [55, 55]
|
|
}, {
|
|
offset: [110, 86],
|
|
opacity: 0.75,
|
|
rotateWithView: false,
|
|
rotation: Math.PI / 2.0,
|
|
scale: 1.25,
|
|
size: [55, 55]
|
|
}, {
|
|
offset: [55, 0],
|
|
opacity: 0.5,
|
|
rotateWithView: true,
|
|
rotation: Math.PI / 3.0,
|
|
scale: 1.5,
|
|
size: [55, 86]
|
|
}, {
|
|
offset: [212, 0],
|
|
opacity: 1.0,
|
|
rotateWithView: true,
|
|
rotation: 0.0,
|
|
scale: 1.0,
|
|
size: [44, 44]
|
|
}];
|
|
|
|
var i;
|
|
|
|
var iconCount = iconInfo.length;
|
|
var icons = new Array(iconCount);
|
|
for (i = 0; i < iconCount; ++i) {
|
|
var info = iconInfo[i];
|
|
icons[i] = new ol.style.Icon({
|
|
offset: info.offset,
|
|
opacity: info.opacity,
|
|
rotateWithView: info.rotateWithView,
|
|
rotation: info.rotation,
|
|
scale: info.scale,
|
|
size: info.size,
|
|
src: 'data/Butterfly.png'
|
|
});
|
|
}
|
|
|
|
var featureCount = 50000;
|
|
var features = new Array(featureCount);
|
|
var feature, geometry;
|
|
var e = 25000000;
|
|
for (i = 0; i < featureCount; ++i) {
|
|
geometry = new ol.geom.Point(
|
|
[2 * e * Math.random() - e, 2 * e * Math.random() - e]);
|
|
feature = new ol.Feature(geometry);
|
|
feature.setStyle(
|
|
new ol.style.Style({
|
|
image: icons[i % (iconCount - 1)]
|
|
})
|
|
);
|
|
features[i] = feature;
|
|
}
|
|
|
|
var vectorSource = new ol.source.Vector({
|
|
features: features
|
|
});
|
|
var vector = new ol.layer.Vector({
|
|
source: vectorSource
|
|
});
|
|
|
|
// Use the "webgl" renderer by default.
|
|
var renderer = common.getRendererFromQueryString();
|
|
if (!renderer) {
|
|
renderer = 'webgl';
|
|
}
|
|
|
|
var map = new ol.Map({
|
|
renderer: renderer,
|
|
layers: [vector],
|
|
target: document.getElementById('map'),
|
|
view: new ol.View({
|
|
center: [0, 0],
|
|
zoom: 5
|
|
})
|
|
});
|
|
|
|
var overlayFeatures = [];
|
|
for (i = 0; i < featureCount; i += 30) {
|
|
var clone = features[i].clone();
|
|
clone.setStyle(null);
|
|
overlayFeatures.push(clone);
|
|
}
|
|
|
|
var featureOverlay = new ol.layer.Vector({
|
|
map: map,
|
|
source: new ol.source.Vector({
|
|
features: overlayFeatures
|
|
}),
|
|
style: new ol.style.Style({
|
|
image: icons[iconCount - 1]
|
|
})
|
|
});
|
|
|
|
map.on('click', function(evt) {
|
|
var info = document.getElementById('info');
|
|
info.innerHTML =
|
|
'Hold on a second, while I catch those butterflies for you ...';
|
|
|
|
window.setTimeout(function() {
|
|
var features = [];
|
|
map.forEachFeatureAtPixel(evt.pixel, function(feature, layer) {
|
|
features.push(features);
|
|
return false;
|
|
});
|
|
|
|
if (features.length === 1) {
|
|
info.innerHTML = 'Got one butterfly';
|
|
} else if (features.length > 1) {
|
|
info.innerHTML = 'Got ' + features.length + ' butterflies';
|
|
} else {
|
|
info.innerHTML = 'Couldn\'t catch a single butterfly';
|
|
}
|
|
}, 1);
|
|
});
|
|
|
|
map.on('pointermove', function(evt) {
|
|
if (evt.dragging) {
|
|
return;
|
|
}
|
|
var pixel = map.getEventPixel(evt.originalEvent);
|
|
var hit = map.hasFeatureAtPixel(pixel);
|
|
map.getTarget().style.cursor = hit ? 'pointer' : '';
|
|
});
|
|
</textarea>
|
|
<textarea class="hidden" name="css"></textarea>
|
|
<textarea class="hidden" name="html"><div class="row-fluid">
|
|
<div class="span12">
|
|
<div id="map" class="map"></div>
|
|
<div class="span2 offset2 pull-right">
|
|
<div id="info" class="alert alert-success">
|
|
&nbsp;
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</textarea>
|
|
<input type="hidden" name="wrap" value="l">
|
|
<input type="hidden" name="resources" value="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css,https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js,http://openlayers.org/en/v3.9.0/css/ol.css,http://openlayers.org/en/v3.9.0/build/ol.js">
|
|
</form>
|
|
<pre><code id="example-source" class="language-markup"><!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<title>Icon sprites with WebGL example</title>
|
|
<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
|
|
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
|
|
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
|
|
<link rel="stylesheet" href="http://openlayers.org/en/v3.9.0/css/ol.css" type="text/css">
|
|
<script src="http://openlayers.org/en/v3.9.0/build/ol.js"></script>
|
|
|
|
</head>
|
|
<body>
|
|
<div class="container-fluid">
|
|
|
|
<div class="row-fluid">
|
|
<div class="span12">
|
|
<div id="map" class="map"></div>
|
|
<div class="span2 offset2 pull-right">
|
|
<div id="info" class="alert alert-success">
|
|
&nbsp;
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
</div>
|
|
<script>
|
|
var iconInfo = [{
|
|
offset: [0, 0],
|
|
opacity: 1.0,
|
|
rotateWithView: true,
|
|
rotation: 0.0,
|
|
scale: 1.0,
|
|
size: [55, 55]
|
|
}, {
|
|
offset: [110, 86],
|
|
opacity: 0.75,
|
|
rotateWithView: false,
|
|
rotation: Math.PI / 2.0,
|
|
scale: 1.25,
|
|
size: [55, 55]
|
|
}, {
|
|
offset: [55, 0],
|
|
opacity: 0.5,
|
|
rotateWithView: true,
|
|
rotation: Math.PI / 3.0,
|
|
scale: 1.5,
|
|
size: [55, 86]
|
|
}, {
|
|
offset: [212, 0],
|
|
opacity: 1.0,
|
|
rotateWithView: true,
|
|
rotation: 0.0,
|
|
scale: 1.0,
|
|
size: [44, 44]
|
|
}];
|
|
|
|
var i;
|
|
|
|
var iconCount = iconInfo.length;
|
|
var icons = new Array(iconCount);
|
|
for (i = 0; i < iconCount; ++i) {
|
|
var info = iconInfo[i];
|
|
icons[i] = new ol.style.Icon({
|
|
offset: info.offset,
|
|
opacity: info.opacity,
|
|
rotateWithView: info.rotateWithView,
|
|
rotation: info.rotation,
|
|
scale: info.scale,
|
|
size: info.size,
|
|
src: 'data/Butterfly.png'
|
|
});
|
|
}
|
|
|
|
var featureCount = 50000;
|
|
var features = new Array(featureCount);
|
|
var feature, geometry;
|
|
var e = 25000000;
|
|
for (i = 0; i < featureCount; ++i) {
|
|
geometry = new ol.geom.Point(
|
|
[2 * e * Math.random() - e, 2 * e * Math.random() - e]);
|
|
feature = new ol.Feature(geometry);
|
|
feature.setStyle(
|
|
new ol.style.Style({
|
|
image: icons[i % (iconCount - 1)]
|
|
})
|
|
);
|
|
features[i] = feature;
|
|
}
|
|
|
|
var vectorSource = new ol.source.Vector({
|
|
features: features
|
|
});
|
|
var vector = new ol.layer.Vector({
|
|
source: vectorSource
|
|
});
|
|
|
|
// Use the "webgl" renderer by default.
|
|
var renderer = common.getRendererFromQueryString();
|
|
if (!renderer) {
|
|
renderer = 'webgl';
|
|
}
|
|
|
|
var map = new ol.Map({
|
|
renderer: renderer,
|
|
layers: [vector],
|
|
target: document.getElementById('map'),
|
|
view: new ol.View({
|
|
center: [0, 0],
|
|
zoom: 5
|
|
})
|
|
});
|
|
|
|
var overlayFeatures = [];
|
|
for (i = 0; i < featureCount; i += 30) {
|
|
var clone = features[i].clone();
|
|
clone.setStyle(null);
|
|
overlayFeatures.push(clone);
|
|
}
|
|
|
|
var featureOverlay = new ol.layer.Vector({
|
|
map: map,
|
|
source: new ol.source.Vector({
|
|
features: overlayFeatures
|
|
}),
|
|
style: new ol.style.Style({
|
|
image: icons[iconCount - 1]
|
|
})
|
|
});
|
|
|
|
map.on('click', function(evt) {
|
|
var info = document.getElementById('info');
|
|
info.innerHTML =
|
|
'Hold on a second, while I catch those butterflies for you ...';
|
|
|
|
window.setTimeout(function() {
|
|
var features = [];
|
|
map.forEachFeatureAtPixel(evt.pixel, function(feature, layer) {
|
|
features.push(features);
|
|
return false;
|
|
});
|
|
|
|
if (features.length === 1) {
|
|
info.innerHTML = 'Got one butterfly';
|
|
} else if (features.length > 1) {
|
|
info.innerHTML = 'Got ' + features.length + ' butterflies';
|
|
} else {
|
|
info.innerHTML = 'Couldn\'t catch a single butterfly';
|
|
}
|
|
}, 1);
|
|
});
|
|
|
|
map.on('pointermove', function(evt) {
|
|
if (evt.dragging) {
|
|
return;
|
|
}
|
|
var pixel = map.getEventPixel(evt.originalEvent);
|
|
var hit = map.hasFeatureAtPixel(pixel);
|
|
map.getTarget().style.cursor = hit ? 'pointer' : '';
|
|
});
|
|
|
|
</script>
|
|
</body>
|
|
</html></code></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
|
|
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
|
|
<script src="./resources/common.js"></script>
|
|
<script src="./resources/prism/prism.min.js"></script>
|
|
<script src="loader.js?id=icon-sprite-webgl"></script>
|
|
|
|
</body>
|
|
</html>
|