将方位角添加到mapbox地图turf.js后，无法正确下载geojson

如何解决将方位角添加到mapbox地图turf.js后，无法正确下载geojson

想要将geojson下载到带有方位的地图。以下代码在没有方位的情况下工作，但是随着我们增加方位的西南和东北位置变化，因此它不会反映在下载的geojson中。以下代码创建一个正方形边界框，但在更改方位角边界框后将其更改为矩形或直线。

   var squareDimensions = 350;
   var center = map.project([urlLng,urlLat]);      
   var southwest = map.unproject([center.x - squareDimensions / 2,center.y + squareDimensions / 2]);
   var northeast = map.unproject([center.x + squareDimensions / 2,center.y - squareDimensions / 2]);
        
   var features = map.queryRenderedFeatures([map.project(southwest),map.project(northeast),]);    
   var multiPt = turf.multiPoint([[southwest.lng,southwest.lat],[northeast.lng,northeast.lat]]);
        
   var bBox = turf.bBox(multiPt);
   var poly = turf.bBoxpolygon(bBox);
   var line = turf.polygonToLine(poly);
        
   var collectionClipped = turf.featureCollection([]);
        
   features.forEach(function(e) {
       var clipped = turf.bBoxClip(e,bBox);
       collectionClipped.features.push(clipped);
   });
        
   collectionClipped.features.push(line);