cesium給地圖上點添加觸發事件

var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
            handler.setInputAction(function (click) {
                var pick = viewer.scene.pick(click.position);
                //選中某模型   pick選中的對象
                if (pick && pick.id) {
                    //console.log(pick.id);
                    var sta = pick.id._label._text;
                    $.ajax({
                        type: "post",
                        url: "{% url 'api:getrainfull' %}",
                        dataType: "json",
                        data: {csrfmiddlewaretoken: '{{ csrf_token }}', 'sta': "" + sta},
                        success: function (data) {
                            chart_3.clear();
                            option.xAxis[0].data = data.days;
                            option.series[0].data = data.met;

                            chart_3.setOption(option);
                            window.addEventListener("resize", function () {
                                chart_3.resize();
                            });

                        },
                        error: function (msg) {
                            console.log(msg);
                            alert("加載失敗");
                        }
                    });

                }

            }, Cesium.ScreenSpaceEventType.LEFT_CLICK);