openlayers - 如何在地图单击事件上获取要素子几何样式坐标

Question

我通过使用 LineString 几何使用 openlayer v5 和样式功能，没有不同的不同样式。造型特征码：

applyStyle(feature,resolution){
var styleArray = [
      new ol.style.Style({ // feature style
        stroke: new ol.style.Stroke({
          color: 'green',
          width: 6,
          lineCap: 'square'
        }),
        text: new Text({
          text: 'gas',
          textAlign: 'start',
          offsetX: 1,
          offsetY: 1,
          fill: new Fill({
            color: 'white'
          })
        })
      }),
      new ol.style.Style({  //feature sub style geometry
        geometry: function (feature) {
          var line = feature.getGeometry();
          var coords = [];
          line.forEachSegment(function (from, to) {
            // for each segment calculate a parallel segment with a
            // distance of 4 pixels
            var angle = Math.atan2(to[1] - from[1], to[0] - from[0]);
            var dist = 5 * resolution;

            var newFrom = [
              Math.sin(angle) * dist + from[0],
              -Math.cos(angle) * dist + from[1]
            ];
            var newTo = [
              Math.sin(angle) * dist + to[0],
              -Math.cos(angle) * dist + to[1]
            ];
            coords.push(newFrom);
            coords.push(newTo);
          });

          return new ol.geom.LineString(coords);
        },
        stroke: new ol.style.Stroke({
          color: 'red',
          width: 5,
          lineCap: 'square'
        }),
        text: new Text({
          text: 'redtext',
          textAlign: 'start',
          offsetX: 1,
          offsetY: 1,
          fill: new Fill({
            color: 'white'
          })
        })
      })
      ];
feature.setStyle(styleArray);  

} 

this.map.on('singleclick', function (evt: any) {
      console.log("single click");

      var features: any = self.map.getFeaturesAtPixel(evt.pixel);

      features.forEach(feature => {
        var styles = feature.getStyle();

        delete styles[0]; //deleting feature style from array only
        console.log();
        styles.forEach(style => {
          console.log();
          var line: any = style.getGeometry();
          var sss = style.getLineString();     //not working
          var lineString = line.getLineString(); //not working
          var geometry = style.getCoordinates(); //not working
          console.log();
        })
      });         
});

在地图单击事件的上述代码中，我尝试了 getGeometry() 但它没有返回几何或坐标。

子几何图像

单击即可获得子样式几何图形的任何帮助。