<script type="text/javascript">
var extent = [0, 0, 418, 600];
var projection = new ol.proj.Projection({
code: 'xkcd-image',
units: 'pixels',
extent: extent
});
var map = new ol.Map({
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
new ol.layer.Group({
layers: [
new ol.layer.Image({
source: new ol.source.ImageStatic({
url: 'http://localhost:2265/images3/test2.png',
projection: projection,
imageExtent: extent,
})
}),
new ol.layer.Image({
source: new ol.source.ImageStatic({
url: 'http://localhost:2265/images2/test1.png',
projection: projection,
imageExtent: extent,
})
})
]
})
],
target: 'map',
view: new ol.View({
projection: projection,
center: ol.extent.getCenter(extent),
zoom: 2,
maxZoom: 8
})
});
var layers = map.getLayers().getArray()[1].getLayers().getArray();
var tiss = layer.getVisible();
var frame = 1;
setInterval(function () {
layers[frame].setVisible(false);
frame = (frame + 1) % 2;
layers[frame].setVisible(false);
}, 500);
</script>
openlayers設置ImageStatic可見不可見
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