OpenLayers 5.3如何在ol.layer.Image中设置方形BBOX

这是代码：它可以工作，但返回时带有定义为矩形的BBOX

 function createLayer () {
        var e = 20037508.34;
        var tileGrid = new ol.tilegrid.TileGrid({
            origin: [-e, -e],
            extent: [-e, -e, e, e],
            resolutions: [168e3, 84e3, 42e3, 21e3, 14e3, 5600, 2800, 1400, 560, 280, 140, 70, 28, 14, 7, 5.6, 4.2, 2.8, 1.4, .56, .42, .28],
        });
        var layers = [
            new ol.layer.Tile({
              source: new ol.source.OSM()
            }),
            new ol.layer.Image({
                source: new ol.source.ImageWMS({
                    url: 'hidelink',
                    params: {
                        'LAYERS':  'pianificazione:v_ps_timewms_vinc_archeologico_vigente',
                        'SRS':'EPSG:900913',
                        'FORMAT': 'image/png; mode=8bit',
                        'VERSION': '1.1.0',
                        'WIDTH': '256',
                        'HEIGHT': '256'
                    },
                tileGrid: tileGrid
              })
            })
          ];
        return layers;
    }

我需要这个rest调用返回一个正方形BBOX中的图像。我该怎么办？

ImageWMS将设置BBOX以填充视口，TileWMS将BBOX设置为填充平铺，在这两种情况下，您指定的任何宽度width和HEIGHT都将被覆盖。既然你已经建立了瓷砖网格，我怀疑你想要瓷砖

        new ol.layer.Tile({
            source: new ol.source.TileWMS({
                url: 'hidelink',
                params: {
                    'LAYERS':  'pianificazione:v_ps_timewms_vinc_archeologico_vigente',
                    'SRS':'EPSG:900913',
                    'FORMAT': 'image/png; mode=8bit',
                    'VERSION': '1.1.0'
                },
            tileGrid: tileGrid
          })

什么不起作用？有了这个图层参数，我想你使用的是意大利的市政服务。我为Firenze找到了这个，这个代码为我返回了256 x 256瓷砖

<!DOCTYPE html>
<html>
  <head>
    <title>WMS Test</title>
    <link rel="stylesheet" href="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/css/ol.css" type="text/css">
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
    <script src="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script>
  </head>
  <body>
    <div id="map" class="map"></div>
    <script>
 function createLayer () {
        var e = 20037508.34;
        var tileGrid = new ol.tilegrid.TileGrid({
            origin: [-e, -e],
            extent: [-e, -e, e, e],
            resolutions: [168e3, 84e3, 42e3, 21e3, 14e3, 5600, 2800, 1400, 560, 280, 140, 70, 28, 14, 7, 5.6, 4.2, 2.8, 1.4, .56, .42, .28],
        });
        var layers = [
            new ol.layer.Tile({
              source: new ol.source.OSM()
            }),
            new ol.layer.Tile({
                source: new ol.source.TileWMS({
                    url: 'http://tms.comune.fi.it/geowebcache/service/wms',
                    params: {
                        'LAYERS':  'pianificazione:v_ps_timewms_vinc_archeologico_vigente',
                        'SRS':'EPSG:900913',
                        'FORMAT': 'image/png; mode=8bit',
                        'VERSION': '1.1.0'
                    },
                tileGrid: tileGrid
              })
            })
          ];
        return layers;
    }
    var map = new ol.Map({
        layers: createLayer (),
        target: "map",
        view: new ol.View({
            center: ol.proj.fromLonLat([11.23, 43.77]),
            zoom: 12
        })
    });
    </script>
  </body>
</html>

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