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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Gis展示</title>
<link rel="stylesheet" href="jslib/openlayer3/css/ol.css" type="text/css">
<link rel="stylesheet" href="jslib/jeasyui/themes/default/easyui.css" type="text/css">
<script src="jslib/openlayer3/build/ol-debug.js"></script>
<script src="jslib/jquery.min.js"></script>
<script src="jslib/jeasyui/jquery.easyui.min.js"></script>
</head>
<body>
<div id="mapContainer" class="subcontent">
<div id="map" class="map" style="width: auto;height: auto"></div>
</div>
<script>
var styles = {
'Circle': new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(57,172,106,0.9)',
opacity: '0.05'
}),
text: new ol.style.Text({
font: '14px sans-serif',
text:'Test\n\n Value \n\n Message',
textAlign:'center',
rotateWithView:true,
fill: new ol.style.Fill({
color: '#FFFFFF'
}),
stroke:new ol.style.Stroke({
color:'#FFFFFF',
width: 1
})
})
})
};
var Selectstyles = {
'Circle': new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(228,57,60,0.9)',
opacity: '0.05'
}),
text: new ol.style.Text({
font: '14px sans-serif',
text:'Test\n\n Value \n\n Message',
textAlign:'center',
fill: new ol.style.Fill({
color: '#FFFFFF'
}),
stroke:new ol.style.Stroke({
color:'#FFFFFF',
width: 1
})
})
})
};
var styleFunction = function(feature) {
return styles[feature.getGeometry().getType()];
};
var selectStyleFunction = function(feature) {
return Selectstyles[feature.getGeometry().getType()];
}
var vectorSource = new ol.source.Vector({
features: new ol.Feature(new ol.geom.Circle([5e6, 7e6], 1e6))
});
vectorSource.addFeature(new ol.Feature(new ol.geom.Circle([5e6, 7e6], 1e6/Math.pow(2,-1))));
var vectorLayer = new ol.layer.Vector({
source: vectorSource,
style: styleFunction
});
var map = new ol.Map({
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
vectorLayer
],
target: 'map',
controls: ol.control.defaults({
attributionOptions: ({
collapsible: false
})
}),
view: new ol.View({
center: [0, 0],
zoom: 2
})
});
var view = map.getView();
view.on('change:resolution',function(event){
var zoom = view.getZoom();
var Collection = map.getLayers();
var layers = Collection.getArray();
var vectorSource = layers[1].getSource();
var features = vectorSource.getFeatures();
var len = features.length;
for(var i = 0 ; i< len; i++) {
var Circle = features[i].getGeometry();
console.log(zoom);
Circle.setRadius(1e6/Math.pow(2,zoom-3));
}
});
var selectPointerMove = new ol.interaction.Select({
condition: ol.events.condition.pointerMove
});
map.addInteraction(selectPointerMove);
selectPointerMove.on('select',function(e) {
var ele = e;
var select_len = e.selected.length;
var unselect_len = e.deselected.length;
if (select_len > 0) {
var featureArr = e.selected;
for (var i = 0; i < featureArr.length; i++) {
featureArr[i].setStyle(selectStyleFunction(featureArr[i]));
var Circle = featureArr[i].getGeometry();
}
}
if (unselect_len > 0) {
var featureArr = e.deselected;
for (var i = 0; i < featureArr.length; i++) {
featureArr[i].setStyle(styleFunction(featureArr[i]));
var Circle = featureArr[i].getGeometry();
}
}
})
</script>
</body>
</html>
|
