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我想用一个矩形绘制一个矩形与4给定的参数(北,南,西,东)的地图。 我已经处理了它与谷歌,地图要做到这一点,但我也wannt得到它与OpenStreetMap的工作(至极使用的OpenLayers-API)如何通过openlayers绘制矩形?
这里是我的代码,到目前为止:
openstreetRectangle : function(param) {
var map, bounds, coords, defaults;
var mapnik = new OpenLayers.Layer.OSM();
defaults = {
n : 50.930985,
s : 50.92991,
w : 11.587115,
e : 11.588392
};
coords = $.extend(defaults, param);
bounds = new OpenLayers.Bounds(coords.w, coords.s, coords.e, coords.n);
map = new OpenLayers.Map("map");
if ((coords.s == coords.n) && (coords.w == coords.e)) {
var marker = new OpenLayers.Layer.Markers("marker");
var size = new OpenLayers.Size(21, 25);
var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
var icon = new OpenLayers.Icon('http://www.openlayers.org/dev/img/marker.png', size, offset);
marker.addMarker(new OpenLayers.Marker(bounds.getCenterLonLat(), icon));
map.addLayer(marker);
// Note that if you pass an icon into the Marker constructor, it will
// take that icon and use it. This means that you should not share icons
// between markers -- you use them once, but you should clone() for any
// additional markers using that same icon.
} else {
var boxes = new OpenLayers.Layer.Boxes("Boxes");
var box = new OpenLayers.Marker.Box(bounds, "#008DCF", 4);
boxes.addMarker(box);
map.addLayer(boxes);
}
map.addLayer(mapnik);
map.setCenter(bounds.getCenterLonLat(), 15);
}
在地图上绘制标记和框可以工作,但是在定位mapcenter,标记和框时存在问题,我猜OpenLayers.Bounds
-Object看起来不像预期那样工作。
任何人都可以帮助解决这个问题吗?
sincerly S.Röher
更新: 我设法添加标记和框。 但它没有将它们设置在正确的位置,它不会将地图移动到正确的孤立点。 所以我想这肯定是我的边界=新的OpenLayers.Bounds(coords.w,coords.s,coords.e,coords.n);' –