GISVue修改图层透明度

Posted 2021-02-06 defineconst

1、添加透明度控制条

    <input
      id="slider"
      type="range"
      min="0"
      max="1"
      step="0.1"
      value="1"
      v-model="opacity"
      @input="changeOpactiy"
    >

2、在export default的data中加入观测值

export default {
  data() {
    return {
    opacity: 1}
    }
}

3、添加事件

      var value = this.opacity;
      this.leftLayer ? this.leftLayer.setOpacity(value) : "";

4、添加图层

leftLayer 即为图层
采用L.tileLayer.wms添加图层

var envLayer = L.tileLayer
        .wms(Url, {
          layers: layers,
          format: "image/png",
          transparent: true,
          version: "1.3.0",
          crs: L.CRS.EPSG3857
        })
        .addTo(map);

5、效果