在Windows Phone 8.1 Runtime中投影效果？(Drop shadow effect in Windows Phone 8.1 Runtime?)

 我正在寻找一种将Drop Shadow Effect添加到Windows Phone 8.1运行时（不是Silverlight！）应用程序中的多种元素的方法。 主要的问题是..没有官方的API。 主要的问题是我需要模仿这种效果，不仅仅是基本形状（如矩形或线条），还有一条路径，如下所示： 
 
 
 图片是从这个问题借来的： 路径与破影效果 - 我希望主人不会介意;）现在，他已经达到了这个效果，因为它是在WPF中完成的。 我正在开发通用应用程序（所以WinRT），并没有效果扩展。 
 
 我多次搜索了网页，并找到了一些解决方法，但他们都错过了一些东西。 例如这一个： 
 
 http://www.silverlightshow.net/items/Simple-Xaml-Drop-Shadows-in-Silverlight-2.aspx < - 我无法在Canvas工作，内容必须是Grid 。 
 
 你有什么想法如何在Windows Phone 8.1 Runtime中伪造阴影效果来取得令人满意的效果？ 

I'm looking for a way to add a Drop Shadow Effect to the multiple kind of elements in my Windows Phone 8.1 Runtime (not Silverlight!) application. The main problem is that.. there's no offical API for it. The main problem is that I need to mimic this effect not only to the basic shapes (like rectangle or a line), but also a path, like here: 
 
 
Picture is borrowed from this question: path-with-broken-shadow-effect - I hope the owner won't mind ;) Now, he has achieved this effect because it was done in WPF. I'm working on a Universal App (so WinRT), and there's no Effects extension. 
 
I've searched the web multiple times, and found some kind of workarounds, but they all miss something. For example this one: 
 
http://www.silverlightshow.net/items/Simple-Xaml-Drop-Shadows-in-Silverlight-2.aspx <- I can't work on Canvas, the content has to be a Grid.
 
Do you any idea how can I achieve satisfying results on faking Drop Shadow Effect in Windows Phone 8.1 Runtime? 

原文：https://stackoverflow.com/questions/25382447