Using Openlayer in Vue to realize loading animation effect

Note: You cannot use scoped animations! ! ! !

via gif

<template>
  <div class="test">
    <div id="map" ref="map" style="width: 100vw; height: 100vh"></div>
  </div>
</template>
 
<script>
import "ol/ol.css";
import { Map, View, Overlay } from "ol";
import TileLayer from "ol/layer/Tile";
import OSM from "ol/source/OSM";
 
export default {
  name: "gif",
  data() {
    return {
      map: {},
      overlay: {},
      markerPoint: {},
      geojsonData:
        type: "FeatureCollection",
        features: [
          {
            type: "Feature",
            properties:
              title: "Alarm 1",
            },
            geometry:
              type: "Point",
              coordinates: [91.48879670091165, 37.83814884701121],
            },
          },
          {
            type: "Feature",
            properties:
              title: "Alarm 2",
            },
            geometry:
              type: "Point",
              coordinates: [99.19515576149941, 26.713646654711134],
            },
          },
          {
            type: "Feature",
            properties:
              title: "Alarm 3",
            },
            geometry:
              type: "Point",
              coordinates: [123.74363825288785, 44.363694825734726],
            },
          },
        ],
      },
    };
  },
  mounted() {
    this.initMap();
    this.addGif();
  },
  methods: {
    // Initialize the map initMap() {
      this.map = new Map({
        target: "map",
        layers:
          new TileLayer({
            source: new OSM(),
          }),
        ],
        view: new View({
          projection: "EPSG:4326",
          center: [104.912777, 34.730746],
          zoom: 4.5,
        }),
      });
    },
    // Use Overlay to add GIF dynamic icon point information addGif() {
      let coordinates = this.getCoordinatesByGeojson(this.geojsonData);
 
      for (const i in coordinates) {
        let gif_span = document.createElement("span");
 
        document.documentElement.appendChild(gif_span);
        this.$nextTick(() => {
          this.markerPoint = new Overlay({
            position: coordinates[i],
            element: gif_span,
            positioning: "center-center",
          });
          this.map.addOverlay(this.markerPoint);
        });
      }
    },
    //Get the coordinate set based on geojson data getCoordinatesByGeojson(geojsonData) {
      let coordinates = [];
      geojsonData.features.map((feature) => {
        coordinates = [...coordinates, feature.geometry.coordinates];
      });
      return coordinates;
    },
  },
};
</script>
<style lang='scss' >
.test {
  span {
    display: inline-block;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: url("https://smart-garden-manage.oss-cn-chengdu.aliyuncs.com/gif.gif")
      no-repeat;
    background-size: 80px 80px;
  }
}
</style>

Through keyframes @keyframes

<template>
  <div class="test">
    <div id="map" ref="map" style="width: 100vw; height: 100vh"></div>
  </div>
</template>
 
<script>
import "ol/ol.css";
import { Map, View, Overlay } from "ol";
import TileLayer from "ol/layer/Tile";
import OSM from "ol/source/OSM";
 
export default {
  name: "gif",
  data() {
    return {
      map: {},
      overlay: {},
      point_overlay: {},
      geojsonData:
        type: "FeatureCollection",
        features: [
          {
            type: "Feature",
            properties:
              title: "Alarm 1",
            },
            geometry:
              type: "Point",
              coordinates: [91.48879670091165, 37.83814884701121],
            },
          },
          {
            type: "Feature",
            properties:
              title: "Alarm 2",
            },
            geometry:
              type: "Point",
              coordinates: [99.19515576149941, 26.713646654711134],
            },
          },
          {
            type: "Feature",
            properties:
              title: "Alarm 3",
            },
            geometry:
              type: "Point",
              coordinates: [123.74363825288785, 44.363694825734726],
            },
          },
        ],
      },
    };
  },
  mounted() {
    this.initMap();
    this.addGif();
  },
  methods: {
    // Initialize the map initMap() {
      this.map = new Map({
        target: "map",
        layers:
          new TileLayer({
            source: new OSM(),
          }),
        ],
        view: new View({
          projection: "EPSG:4326",
          center: [104.912777, 34.730746],
          zoom: 4.5,
        }),
      });
    },
    // Use Overlay to add GIF dynamic icon point information addGif() {
      let coordinates = this.getCoordinatesByGeojson(this.geojsonData);
 
      for (const i in coordinates) {
        let point_div = document.createElement("div");
        point_div.className = "css_animation";
        point_div.id = `coordinate_${i}`;
        document.documentElement.appendChild(point_div);
 
        this.$nextTick(() => {
          this.point_overlay = new Overlay({
            position: coordinates[i],
            element: point_div,
            positioning: "center-center",
          });
          this.map.addOverlay(this.point_overlay);
        });
      }
    },
    //Get the coordinate set based on geojson data getCoordinatesByGeojson(geojsonData) {
      let coordinates = [];
      geojsonData.features.map((feature) => {
        coordinates = [...coordinates, feature.geometry.coordinates];
      });
      return coordinates;
    },
  },
};
</script>
<style lang='scss' >
.test {
  .css_animation {
    height: 50px;
    width: 50px;
    border-radius: 50%;
    background: rgba(255, 0, 0, 0.9);
    box-shadow: inset 0 0 8px red;
    transform: scale(0);
    animation: myfirst 3s;
    animation-iteration-count: infinite; // infinite loop}
  @keyframes myfirst {
    to {
      transform: scale(2);
      background: rgba(0, 0, 0, 0);
      box-shadow: inset 0 0 50px rgba(255, 0, 0, 0);
    }
  }
}
</style>

It can load animations and obtain the attributes of the feature points where the animations are located.

NOTE: There is a problem with this code. Currently, you can only click to obtain properties or display animation, but not at the same time. This needs to be optimized!

<template>
  <div class="test">
    <div id="map" ref="map" style="width: 100vw; height: 100vh"></div>
    <div
      id="popup"
      style="
        position: absolute;
        background-color: rgba(47, 57, 90, 0.678);
        bottom: 20px;
        left: 30px;
        border: 1px solid white;
        padding: 10px;
        width: 60px;
      "
    >
      {{ properties.title }}
    </div>
  </div>
</template>
 
<script>
import "ol/ol.css";
import { Map, View, Overlay } from "ol";
import { OSM, Vector as VectorSource } from "ol/source";
import { Vector as VectorLayer, Tile as TileLayer } from "ol/layer";
import GeoJSON from "ol/format/GeoJSON";
 
import Select from "ol/interaction/Select";
import { altKeyOnly, click, pointerMove } from "ol/events/condition";
import { Fill, Stroke, Style, Circle } from "ol/style";
 
export default {
  name: "gif",
  data() {
    return {
      map: {},
      layer: {},
 
      overlay: {},
      point_overlay: {},
      geojsonData:
        type: "FeatureCollection",
        features: [
          {
            type: "Feature",
            properties:
              title: "Alarm 1",
            },
            geometry:
              type: "Point",
              coordinates: [91.48879670091165, 37.83814884701121],
            },
          },
          {
            type: "Feature",
            properties:
              title: "Alarm 2",
            },
            geometry:
              type: "Point",
              coordinates: [99.19515576149941, 26.713646654711134],
            },
          },
          {
            type: "Feature",
            properties:
              title: "Alarm 3",
            },
            geometry:
              type: "Point",
              coordinates: [123.74363825288785, 44.363694825734726],
            },
          },
        ],
      },
 
      select: {},
      properties:
        title: "",
      },
    };
  },
  mounted() {
    this.initMap();
    // this.addGif(); //After commenting out, click to get feature attributes},
  methods: {
    // Initialize the map initMap() {
      this.layer = new VectorLayer({
        source: new VectorSource({
          features: new GeoJSON().readFeatures(this.geojsonData),
        }),
      });
      this.map = new Map({
        target: "map",
        layers:
          new TileLayer({
            source: new OSM(),
          }),
          this.layer,
        ],
        view: new View({
          projection: "EPSG:4326",
          center: [104.912777, 34.730746],
          zoom: 4.5,
        }),
      });
 
      this.select = new Select({
        condition: click, //Click to select});
      this.map.addInteraction(this.select);
 
      let overlayer_popup = new Overlay({
        element: document.getElementById("popup"),
        positioning: "center-center", //Must add it, otherwise there will be offset});
 
      this.select.on("select", (e) => {
        let coordinate = e.mapBrowserEvent.coordinate; //Get the selected coordinates let featureSelect = e.selected[0]; //Selected feature if (e.selected.length !== 0) {
          overlayer_popup.setPosition(coordinate);
          this.map.addOverlay(overlayer_popup);
        } else {
          overlayer_popup.setPosition("");
        }
 
        if (featureSelect) {
          this.properties = featureSelect.getProperties(); //Get all properties of the current feature //Set the selected style featureSelect.setStyle(
            new Style({
              image: new Circle({
                radius: 10,
                fill: new Fill({
                  //Vector layer fill color and transparency color: "rgba(255,0,0,0.5)",
                }),
                stroke: new Stroke({
                  //Border style color: "rgba(100, 90, 209, 0.6)",
                  width: 3,
                }),
              }),
            })
          );
        }
      });
 
      // Set the style of the mouse over the vector element this.map.on("pointermove", (e) => {
        const isHover = this.map.hasFeatureAtPixel(e.pixel);
        this.map.getTargetElement().style.cursor = isHover ? "pointer" : "";
      });
    },
    // Use Overlay to add GIF dynamic icon point information addGif() {
      let coordinates = this.getCoordinatesByGeojson(this.geojsonData);
 
      for (const i in coordinates) {
        let point_div = document.createElement("div");
        point_div.className = "css_animation";
        point_div.id = `coordinate_${i}`;
        document.documentElement.appendChild(point_div);
 
        this.$nextTick(() => {
          this.point_overlay = new Overlay({
            position: coordinates[i],
            element: point_div,
            positioning: "center-center",
          });
          this.map.addOverlay(this.point_overlay);
        });
      }
    },
    //Get the coordinate set based on geojson data getCoordinatesByGeojson(geojsonData) {
      let coordinates = [];
      geojsonData.features.map((feature) => {
        coordinates = [...coordinates, feature.geometry.coordinates];
      });
      return coordinates;
    },
  },
};
</script>
<style lang='scss' scoped>
.test {
}
</style>
<style lang='scss' >
.test {
  .css_animation {
    height: 50px;
    width: 50px;
    border-radius: 50%;
    background: rgba(255, 0, 0, 0.9);
    box-shadow: inset 0 0 8px red;
    transform: scale(0);
    animation: myfirst 3s;
    animation-iteration-count: infinite; // infinite loop}
  @keyframes myfirst {
    to {
      transform: scale(2);
      background: rgba(0, 0, 0, 0);
      box-shadow: inset 0 0 50px rgba(255, 0, 0, 0);
    }
  }
}
</style>

This is the end of this article about Vue+Openlayer loading animation. For more related Vue Openlayer loading animation content, please search 123WORDPRESS.COM's previous articles or continue to browse the following related articles. I hope everyone will support 123WORDPRESS.COM in the future!

You may also be interested in: