https://wenku.baidu.com/view/fc90eb7cb9d528ea80c779d6.html
https://blog.csdn.net/m1m2m3mmm/article/details/94477036#2%20%E5%88%A9%E7%94%A8ArcEngine%E5%AE%9E%E7%8E%B0%E7%9F%A2%E9%87%8F%E5%9B%BE%E5%B1%82%E9%80%8F%E6%98%8E%E5%BA%A6%E7%9A%84%E8%B0%83%E6%95%B4
元素旋转与透明度调整
原文：https://www.cnblogs.com/baimy/p/12016679.html
