openlayer鼠标经过高亮
时间: 2023-10-01 19:03:34 浏览: 103
要在OpenLayers中实现鼠标经过时高亮效果,可以按照以下步骤进行操作:
1. 创建一个样式函数,用于定义鼠标经过时的高亮样式:
```javascript
var highlightStyle = new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(255, 255, 255, 0.7)'
}),
stroke: new ol.style.Stroke({
color: '#3399CC',
width: 3
}),
image: new ol.style.Circle({
radius: 7,
fill: new ol.style.Fill({
color: '#3399CC'
})
})
});
```
2. 创建一个高亮图层和高亮要素,并添加到地图中:
```javascript
var highlightLayer = new ol.layer.Vector({
source: new ol.source.Vector(),
style: highlightStyle
});
map.addLayer(highlightLayer);
```
3. 监听鼠标移动事件,当鼠标移动到要素上时,将要素添加到高亮图层中:
```javascript
var highlight;
map.on('pointermove', function(event) {
if (highlight) {
highlightLayer.getSource().removeFeature(highlight);
}
var feature = map.forEachFeatureAtPixel(event.pixel, function(feature) {
return feature;
});
if (feature) {
highlightLayer.getSource().addFeature(feature);
highlight = feature;
}
});
```
通过以上步骤,当鼠标经过地图上的要素时,会以高亮的样式显示该要素。
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