1

Surpriseplus

2022-12-21 ec3342e1b34dd02f33dae9bed2db16a14ae8096d

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<template>
  <div id="mapView" class="projectBox">
    <div class="Tools">
      <el-button
        type="success"
        icon="el-icon-plus"
        @click="drowPoint"
      ></el-button>
      <el-button
        type="danger"
        icon="el-icon-delete"
        @click="clearDrawPoint"
      ></el-button>
    </div>
  </div>
</template>
 
<script>
import TileLayer from 'ol/layer/Tile';
import XYZ from 'ol/source/XYZ';
import Map from 'ol/Map';
import View from 'ol/View';
import { transform } from 'ol/proj';
import VectorSource from 'ol/source/Vector';
import { Vector as VectorLayer, Tile } from 'ol/layer';
import { Draw } from 'ol/interaction';
import Feature from 'ol/Feature';
import { Circle as CircleStyle, Style, Fill, Stroke } from 'ol/style';
import { Point } from 'ol/geom';
export default {
  data() {
    return {
      mapol: null,
      drawLayer: null,
      draw: null,
    };
  },
  methods: {
    initOlMap() {
      var vectorLayer = new TileLayer({
        source: new XYZ({
          url: 'http://wprd0{1-4}.is.autonavi.com/appmaptile?lang=zh_cn&size=1&style=7&x={x}&y={y}&z={z}',
        }),
      });
      this.mapol = new Map({
        target: 'mapView',
        layers: [vectorLayer],
        view: new View({
          center: transform([105.02, 34.9], 'EPSG:4326', 'EPSG:3857'),
          zoom: 4,
          projection: 'EPSG:3857',
        }),
      });
      if (this.$store.state.projeOl != null) {
        this.showPointInMap();
      }
    },
    showPointInMap() {
      var value = this.$store.state.projeOl
        .replace('POINT(', '')
        .replace(')', '');
      var a1 = value.split(' ');
      console.log(a1);
      var a2 = transform(
        [parseFloat(a1[0]), parseFloat(a1[1])],
        'EPSG:4326',
        'EPSG:3857'
      );
      var feature = new Feature({
        geometry: new Point(a2),
      });
      feature.setStyle(
        new Style({
          image: new CircleStyle({
            fill: new Fill({
              color: 'blue',
            }),
            radius: 4,
          }),
        })
      );
      let source = new VectorSource();
      source.addFeature(feature);
      this.drawLayer = new VectorLayer();
      this.drawLayer.setSource(source);
      this.mapol.addLayer(this.drawLayer);
    },
    clearDrawPoint() {
      if (this.drawLayer) {
        this.mapol.removeLayer(this.drawLayer);
        this.drawLayer = null;
        this.$store.state.projeOl = null;
      }
    },
 
    drowPoint() {
      const source = new VectorSource({ wrapX: false });
      if (this.drawLayer) {
        this.mapol.removeLayer(this.drawLayer);
      }
      this.drawLayer = new VectorLayer({
        source: source,
      });
      this.mapol.addLayer(this.drawLayer);
      this.draw = new Draw({
        source: source, // 和图层使用同一个source，画的图形在图层上，图层在地图上即可展示
        type: 'Point', // 可选择三角形，多边形，圆形等具体见官网demo
        freehand: false, // 画选还是点选
      });
      // 添加交互
      this.mapol.addInteraction(this.draw);
      this.draw.on('drawend', (e) => {
        let feature = e.feature;
        let geom = feature.getGeometry();
        var extent = geom.flatCoordinates;
        var a1 = transform([extent[0], extent[1]], 'EPSG:3857', 'EPSG:4326');
 
        this.$store.state.projeOl =
          'POINT(' + a1[0].toFixed(6) + ' ' + a1[1].toFixed(6) + ')';
        this.mapol.removeInteraction(this.draw);
      });
    },
  },
  mounted() {
    this.initOlMap();
  },
};
</script>
 
<style>
.projectBox {
  width: 100%;
  height: 100%;
  overflow: hidden;
  margin: 0;
  padding: 0;
}
.Tools {
  position: absolute;
  background: #303030;
  opacity: 0.9;
  z-index: 40;
  padding: 10px;
  width: 95%;
}
.primary {
  background: #409eff;
  border: #409eff;
  color: white;
}
</style>