1、鼠标涂鸦+橡皮擦：https://blog.csdn.net/n_moling/article/details/88546672 2、灯光系统，太阳光晕效果实现： https://blog.csdn.net/q764424567/article/details/108852199?utm_medium=distribute.pc_feed.none-task-blog-personrec_tag-6.nonecase&depth_1-utm_source=distribute.pc_feed.none-task-blog-personrec_tag-6.nonecase&request_id=5f73ce8398fa0775e7e587ba
