你好，这个就是一个地图的监听事件，然后活地图中选择的点，再按照官网的示例中的，直接把这些点坐标传入到nodes就好了，具体代码可以参考博客：https://blog.csdn.net/supermapsupport/article/details/104751909?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522161951200616780261922879%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=161951200616780261922879&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_v2~rank_v29-1-104751909.nonecase&utm_term=%E6%97%85%E8%A1%8C%E5%95%86
