Shadow
阴影
The Shadow component adds a simple outline effect to graphic components such as Text or Image. It must be on the same GameObject as the graphic component.
Shadow组件为图形组件（比如Text或Image）添加了简单的轮廓。它必须和图形组件在同一个GameObject上
Properties
属性
| Property: | Function: |
|---|---|
| Effect Color | The color of the shadow. |
| Effect Distance | The offset of the shadow expressed as a vector. |
| Use Graphic Alpha | Multiplies the color of the graphic onto the color of the effect. |
| 属性 | 功能 |
|---|---|
| Effect Color | 阴影的颜色 |
| Effect Distance | 阴影的偏移量表示为一个向量 |
| Use Graphic Alpha | 字面的翻译不太对，看了源码，其实就是阴影的透明度要不要乘一下原图的透明度（只和alpha的值有关，这个选项不会影响rgb的值） |
