Question

我尝试使用TMS图层和Boxes图层制作地图。

我的地图是这样构建的：

`var get_my_url = function (bounds) {
    var res = this.map.getResolution();
    var x = Math.round ((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
    var y = Math.round ((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
    var zoom = this.map.getZoom();

    var path = '433-' + zoom + "-" + x + "-" + y + "." + this.type; 
    var url = this.url;
    if (url instanceof Array) {
        url = this.selectUrl(path, url);
    }
    return url + path;
}

var maxSize = 3872;
var mapHeight = 2592;
var tileSize = 256;

var options = {
    maxExtent: new OpenLayers.Bounds(0,0,maxSize,maxSize),
    maxResolution: maxSize / tileSize,
    numZoomLevels: 5
};

var map = new OpenLayers.Map(
    'map',
    options
);`

我的TMS图层构建如下：

`var layer = new OpenLayers.Layer.TMS(
    'Aerial',
    '<?php print site_url(); ?>/wp-content/uploads/map-tiles/',
    {
        type: 'png',
        getURL: get_my_url,
        layername: "basic",
        isBaseLayer: true
    }
);`

最后，我的Boxes层构建如下：

`var bounds = new OpenLayers.Bounds(<?php print $box_x ?>, <?php print $box_y ?>, <?php print $box_x + $box_w ?>, <?php print $box_y + $box_h ?>);
box = new OpenLayers.Marker.Box(bounds);
box.events.register("click", box, function (e) {
    this.setBorder("yellow");
});

var boxes  = new OpenLayers.Layer.Boxes( 
    'Boxes',
    {
        layername: "juzbox",
        isBaseLayer: false
    }
);
boxes.addMarker(box);`

现在，我只需将图层添加到地图中，然后在地图上设置中心，如：

`map.addLayers([layer, boxes]);

var lonlat = new OpenLayers.LonLat(maxSize/2, maxSize-(mapHeight/2));
lonlat.transform(map.displayProjection, map.baseLayer.projection);
map.setCenter(lonlat, 2);`

我的问题是我的图层没有叠加，但第二层是第一个......

需要一些帮助!!

Answer 1

哇!!哇!!一天半解决这个问题...我觉得我有时候只是愚蠢......：）

稍后注意：0,0是地图的左下角，而不是左上角!!!

所以问题只是在盒子层的范围内。

var bounds = new OpenLayers.Bounds(<?php print $box_x ?>, maxSize - <?php print $box_y + $box_h ?>, <?php print $box_x + $box_w ?>, maxSize - <?php print $box_y ?>);

它有效......看看the exemple

Openlayers：图层没有正确叠加

1 个答案: