在geo上拖动散点的实现问题,echarts的事件有点bugecharts scatter配置项内容和展示

该例子里,拖动成都那个点,鼠标放开之后,移动鼠标,地图会一直跟着动... 代码里,在散点上按下鼠标后,会禁用地图缩放移动,然后移动鼠标是为了移动点. 当放开鼠标后,地图恢复可移动状态. 但是实际上,鼠标放开事件并没有正确的作用到地图的roam上,导致鼠标没有按下,但地图会一直跟着动

      var uploadedDataURL = "/asset/get/s/data-1517645039291-B1vgpymUz.json";

$.getJSON(uploadedDataURL, function(geoJson) {
    echarts.registerMap('zhongguo', geoJson);
    myChart.hideLoading();

    option = {
        title: {
            text: '在地图上点击添加散点',
            x: 'center',
            textStyle: {
                color: '#ccc'
            }
        },
        // toolbox: {
        //     show: true,
        //     orient: 'vertical',
        //     left: 'right',
        //     top: 'center',
        //     feature: {
        //             dataView: {readOnly: false},
        //             restore: {},
        //             saveAsImage: {}
        //             }
        // },
        geo: {
            show: true,
            map: 'zhongguo',
            label: {
                emphasis: {
                    show: true,
                }
            },
            roam: true
        },
        series: [
            {
                name: '点',
                type: 'scatter',
                coordinateSystem: 'geo',
                // symbol: 'pin',
                label: {
                    normal: {
                        formatter: "{b}",
                        show: true
                    }
                },
                zlevel: 6,
                data: [{name: "成都", value:[104.06,30.67,100]}],
            }

        ]
    };
    myChart.setOption(option);
    
    var move = function()
{
    
};

var up = function()
{
    myChart.off("mousemove", move);
    myChart.off("mouseup", up);
    
    myChart.setOption
    ({
        geo:
        {
            roam: true
        }
    });
}

myChart.on("mousedown", function(event)
{
    if (event.componentSubType === "scatter")
    {
        myChart.setOption
        ({
            geo:
            {
                roam: false
            }
        });
        
        myChart.on("mousemove", move);
        myChart.on("mouseup", up);
    }
});
});