Open Layers 6 - Image Layer 结合 Vector Layer

Open Layers 6 - Image Layer combine with Vector Layer

我正在尝试将图像层与矢量图层相结合,但是当我将投影添加到视图时,矢量消失了。我做错了什么吗?

这是我正在努力实现的一个例子: https://stackblitz.com/edit/react-ol6

我希望下面的这两层在视图中在一起。

Vector Layer

Image Layer

对于那些寻找答案的人,Mike 提供了一个很好的解决方案,您可以将范围值设置为等于矢量图层的扩展。再次感谢。

var extent = [-e,-e,e,e];
var source = new VectorSource({});

var vectorLayer = new VectorLayer({
    source: source,
});

var imageLayer = new ImageLayer({
    source: new Static({
        url: "https://imgs.xkcd.com/comics/online_communities.png",
        projection: new Projection({
            units: "pixels",
            extent: extent
        }),
        imageExtent: extent,
    }),
});
vectorLayer.setZIndex(1);
imageLayer.setZIndex(0);

var olMap = new Map({
    target: null,
    layers: [imageLayer, vectorLayer],

    view: new View({


    projection: new Projection({
          units: "pixels",
              extent: extent,
       }),
        center: getCenter(extent),
   // center: [0,0],
        zoom: 0,
    }),
});

class App extends Component {
    componentDidMount() {
    olMap.setTarget("olmap");
        vectorLayer.getSource().addFeatures(features);
    }

    render() {
        return (
            <div className="App">
                <div id="olmap" style={{ width: "100%", height: "80%" }} />
            </div>
        );
    }
}

这里还有一个他分享的 stackblitz:https://stackblitz.com/edit/react-ol6-xw1x9l