在 Openlayer 中添加 mark，并添加 hover 效果

add mark

方法一

如果有多个点的话，可以生成多个 feature（循环调用 addFeature）

const iconStyle = () =>
  new Style({
    image: new Icon({
    scale: 0.2, src: image }) });

const addFeature = (point: Coordinate) =>
  new Feature({
   
    geometry: new Point(Proj.fromLonLat(point)),
    properties,
    name: "当前位置",
    population: 4000,
    rainfall: 500,
  });
const pointSource = new VectorSource({
   
  features: [addFeature(point)],
});
const clusterSourceForLayer = new Cluster({
   
  source: pointSource,
  distance: 50,
});
const pointLayer = new VectorLayer({
   
  source: clusterSourceForLayer,
  zIndex: 3,
  style: iconStyle,
}