Openlayer中给feature设置不同的样式

àì夳堔傛蜴生んèń 2022-09-09 09:28 356阅读 0赞

![20210831101738346.png][]

# 方式一： #

geojson数据：

geojsonData: {
            type: "FeatureCollection",
            features: [
              {
                type: "Feature",
                properties: {         
                  name: "地块1",
                  style: {
                    fill: {
                      color: "rgba(255,255,0,0.2)",
                    },
                    stroke: {
                      color: "rgba(255,255,0,0.6)",
                    },
                  },
                },
                geometry: {
                  type: "MultiPolygon",
                  coordinates: [
                    [
                      [
                        [104.29969588135856, 30.526679760778393],
                        [104.29992193015403, 30.526209817229756],
                        [104.29919619454733, 30.526001614391873],
                        [104.29897609440422, 30.52647750659287],
                        [104.29969588135856, 30.526679760778393],
                      ],
                    ],
                  ],
                },
              }
            ],
          },

使用：

this.map = new Map({
            target: "map",
            layers: [
              new VectorLayer({
                name: "dk",
                source: new VectorSource({
                  features: new GeoJSON().readFeatures(this.geojsonData),
                }),
                style: function (feature) {
                  return new Style({
                    fill: new Fill({
                      color: feature.get("style").fill.color,
                    }),
                    stroke: new Stroke({
                      color: feature.get("style").stroke.color,
                      width: 3,
                    }),
                    text: new Text({
                      textAlign: "center",
                      textBaseline: "middle",
                      font: "bold 18px 微软雅黑",
                      text: `${feature.get("name")}`,
                      fill: new Fill({ color: "#00FFFF" }),
                      stroke: new Stroke({ color: "#353535", width: 1 }),
                    }),
                  });
                },
                zIndex: 999,
              }),
            ],
            view: new View({
              projection: "EPSG:4326",
              center: [104.29806, 30.5263],
              zoom: 18,
            }),
          });

# 方式二： #

通过feature.setStyle()设置样式，通过feature.getStyle()获取样式

feature.setStyle(() => {
        return new Style({
         stroke: new Stroke({
             color: "#07B9EE",
             lineDash: [7, 10],
             width: 2
             })
        })
    })

[20210831101738346.png]: /images/20220829/0fb0a7b434b04709ab4d492076875d4b.png