问题
I am trying to make web map application with openlayers 3. I have a problem which i want to fix.
I am loading OSM layer as my base map of the application. But the problem with the OSM layer is that it shows whole world and I can pan my map all around the world.
I want my application to be fixed in certain part. I have map extent set but still it doesn't work.
I am using minZoom but it doesn't help.
Is there any other way to fix this prolem?
var centerpos = [84.2, 28.2];
var newpos = ol.proj.transform(centerpos,'EPSG:4326','EPSG:900913');
var baseLayerOSM = new ol.layer.Tile({
source: new ol.source.MapQuest({
layer: 'osm'
}),
isBaseLayer:true
});
var map = new ol.Map({
layers: [baseLayerOSM],
target: 'map',
controls: [new CustomControl()],
view: new ol.View({
extent:[80.05844110726194,26.34796712822462,88.2015218371264,30.44742963310623],
projection : 'EPSG:900913', // OSM projection
center : newpos,
minZoom:7,
zoom: 7
})
});
This is my code.
AJ
回答1:
Basically your example should work, but I think you forgot to transform your extent to EPSG:900913 / EPSG:3857 as well.
var maxExtent = [80.05844110726194,26.34796712822462,88.2015218371264,30.44742963310623];
var map = new ol.Map({
layers: [baseLayerOSM],
target: 'map',
controls: [new CustomControl()],
view: new ol.View({
extent: ol.proj.transformExtent(maxExtent, 'EPSG:4326', 'EPSG:900913'),
projection : 'EPSG:900913', // OSM projection
center : newpos,
minZoom:7,
zoom: 7
})
});
来源:https://stackoverflow.com/questions/32003073/how-can-i-restrict-map-to-show-only-the-selected-country