3D-echarts的背景和地图表面的贴图

1.设置背景图片

效果如下：

核心代码（全部代码见文末）：

 注意：图片的路径设置 绝对路径 或 asset下面的相对路径都没有效果，要把图片放到public路径下面才有效果（此demo是写在v2脚手架中）

 2.设置背景颜色渐变

效果如下：

核心代码（全部代码见文末）：

3.设置地图表面贴图

效果如下(贴图是树的图片)：

核心代码（全部代码见文末）：

全部代码如下：

<template>
  <div class="about">
    <!-- 江苏省地图 -->
    <div id="pic" style="width: 100%; height: 800px"></div>
    <el-dialog
      title="提示"
      :visible.sync="centerDialogVisible"
      width="30%"
      center
    >
      <span>点击的弹框内容Content{{area}}</span>
      <span slot="footer" class="dialog-footer">
        <el-button @click="centerDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="centerDialogVisible = false"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>
<script>
import * as echarts from "echarts";
import jiangsu from "../assets/jiangsu.js";
import "echarts-gl";

export default {
  data() {
    return {
      centerDialogVisible: false,
    };
  },
  mounted() {
    this.init();
  },
  computed: {},
  methods: {
    init() {
      
      var myChart = echarts.init(document.getElementById("pic"));
      var json = jiangsu;
      console.log(json, "rreess");
      var dataJson = {
        南京市: [118.767413, 32.041544],
        无锡市: [120.301663, 31.574729],
        徐州市: [117.184811, 34.261792],
        常州市: [119.946973, 31.772752],
        苏州市: [120.619585, 31.299379],
        南通市: [120.864608, 32.016212],
        连云港市: [119.178821, 34.600018],
        淮安市: [119.021265, 33.597506],
        盐城市: [120.139998, 33.377631],
        扬州市: [119.421003, 32.393159],
        镇江市: [119.452753, 32.204402],
        泰州市: [119.915176, 32.484882],
        宿迁市: [118.275162, 33.963008],
      };
      var chinaDatas = [
        { name: "南京市", value: 0 },
        { name: "无锡市", value: 0 },
        { name: "徐州市", value: 0 },
        { name: "常州市", value: 0 },
        { name: "苏州市", value: 0 },
        { name: "南通市", value: 0 },
        { name: "连云港市", value: 0 },
        { name: "淮安市", value: 0 },
        { name: "盐城市", value: 0 },
        { name: "扬州市", value: 0 },
        { name: "镇江市", value: 0 },
        { name: "泰州市", value: 0 },
        { name: "宿迁市", value: 0 },
      ];

      chinaDatas = chinaDatas.map((item) => {
        item.value = parseInt(Math.random() * 1000);
        return item;
      });

      var convertData = function (data) {
        var res = [];
        for (var i = 0; i < data.length; i++) {
          var geoCoord = dataJson[data[i].name];
          if (geoCoord) {
            res.push({
              name: data[i].name,
              value: geoCoord.concat(data[i].value),
            });
          }
        }
        console.log(res, "hhhhushudueu");
        return res;
      };

      echarts.registerMap("henan", json);

      var option = {
        // backgroundColor: "#000",  // 设置背景颜色
        geo3D: {
          type: "map3D",
          name: "河南",
          // environment: "./tree.jpeg", // 设置背景图片
          environment: new echarts.graphic.LinearGradient(  // 设置背景渐变
            0,
            0,
            0,
            1,
            [
              {
                offset: 0.1,
                color: "blue", // 颜色1
              },
              {
                offset: 0.5,
                color: "#4CB35D", // 颜色2
              },
              {
                offset: 1,
                color: "#FDBF5B", // 颜色3
              },
            ],
            false
          ),
          selectedMode: "single", //地图高亮单选
          regionHeight: 5, //地图高度
          map: "henan",
          viewControl: {
            distance: 110, //地图视角 控制初始大小
            rotateSensitivity: [1, 1],
          },
          // regions: [
          //   {
          //     name: "南京市",
          //     itemStyle: {
          //       color: "#000",
          //       opacity: 1,
          //     },
          //     label: {
          //       show: true,
          //     },
          //   },
          // ], //设置默认高亮区域
          shading: "realistic",   // shading属性是realistic才能设置地图的贴图
          // 
          realisticMaterial: { 
            detailTexture: "./tree.jpeg",  // 地图表面贴图  
          },
          label: {
            show: true,
            // position: 'insideBottom',
            alignText: "center",

            color: "#fff", //文字颜色
            fontSize: 18, //文字大小
            padding: [5, 10],
            alignText: "center",
            lineHeight: 24,
            backgroundColor: "rgba(0,0,0,0.32)", //透明度0清空文字背景
            borderWidth: 1.5, //分界线宽度
            borderRadius: 5,
            borderColor: "#06b2f7", //分界线颜色

            rich: {
              a: {
                color: "#fff", //文字颜色
                fontSize: 18, //文字大小
                padding: [5, 10],
                alignText: "center",
                lineHeight: 24,
                backgroundColor: "rgba(0,0,0,0.32)", //透明度0清空文字背景
                // backgroundImage: url('../assets/bg.png'), //透明度0清空文字背景
                borderWidth: 1.5, //分界线宽度
                borderRadius: 5,
                borderColor: "#F2A451", //分界线颜色
              },
              b: {
                position: ["10%", "10%"],
                backgroundColor: {
                  image:
                    "https://pics2.baidu.com/feed/9d82d158ccbf6c81d40aad32ce13813e32fa40e7.jpeg@f_auto?token=a06e2c37d2fab89584f2e2321e088d84",
                },
                height: 50,
                width: 50,
              },
            },
          },
          itemStyle: {
            color: "#074a9a", //地图颜色
            borderWidth: 4, //分界线wdith
            borderColor: "#2eeaff", //分界线颜色
          },
          emphasis: {
            label: {
              show: true, //鼠标经过是否显示高亮
              textStyle: {
                color: "#fff", //高亮文字颜色
              },
            },
            itemStyle: {
              color: "#ccc", //地图高亮颜色
            },
          },
          data: [],
        },
        series: [
          {
            name: "scatter3D",
            type: "scatter3D",
            coordinateSystem: "geo3D",
            // symbol: "image://"+require('../assets/WechatIMG1600.png'),
            symbol: "pin",

            symbolSize: 40,
            color: "red",
            opacity: 1,

            itemStyle: {
              borderWidth: 0.5,
              borderColor: "#fff",
            },
            data: convertData(chinaDatas),
          },
        ],
      };
      myChart.getZr().on("click", (params) => {
        let inside = document.getElementById("pic").children[0].style.cursor;
        if (this.area !== "" && inside === "pointer") {
          console.log(inside, "inside", this.area);
          this.centerDialogVisible = true;
        }
      });
      myChart.setOption(option);
    },
  },
};
</script>