/*
 * @Descripttion: 
 * @version: 
 * @Author: song
 * @Date: 2020-10-23 14:04:10
 * @LastEditors: song
 * @LastEditTime: 2020-10-23 16:00:07
 */
///////////////////////////////////////////////////////////////////////////
// Copyright © 2018 NarutoGIS. All Rights Reserved.
// 模块描述:热图实现，集成第三方js
/////////////////////////////////////////////////////////////////////////// 
define([
    "dojo/_base/declare",
    "dojo/_base/lang",
    'dojo/_base/html',
    "dojo/_base/fx",
    'jimu/BaseWidget'
], function (
    declare,
    lang,
    html,
    fx,
    BaseWidget
) {
    return declare("HeatMap", [BaseWidget], {
        baseClass: "HeatMap",
        postCreate: function () {
            this.inherited(arguments);
        },
        destroy: function () {

            this.inherited(arguments);
        },

        startup: function () {
            this.inherited(arguments);
        },
        flag: false,
        click: function () {
            if (this.heatMap) {//判断是否创建了，如果创建了就是控制显示隐藏
                this.flag = !this.flag;

                if (this.flag) {
                    this.labelNode.innerHTML = "隐藏热图";
                } else {
                    this.labelNode.innerHTML = "显示热图";
                }

                this.heatMap.show(this.flag);
            } else {
                this.addHeatmap();
                this.flag = true;
                this.labelNode.innerHTML = "隐藏热图";
            }
        },

        addHeatmap: function () {
            let layer1 = new DC.HeatLayer('layer1')
            window.dcViewer.addLayer(layer1)
            let positions = generatePosition(1000)
            layer1.setPositions(positions)
            setInterval(() => {
                let positions = generatePosition(1000)
                layer1.setPositions(positions)
            }, 2000)
            window.dcViewer.flyTo(layer1)
            this.heatMap = layer1;
            function generatePosition(num) {
                var list = []
                for (var i = 0; i < num; i++) {
                  var lng = 120.38105869 + Math.random() * 0.5
                  var lat = 31.10115627 + Math.random() * 0.5
                  list.push(new DC.Position(lng, lat))
                }
                return list
              }
        }
    });
});