Outline
描边
The Outline 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.
描边组件为图形组件（比如Text和Image）添加了一个简单的描边（轮廓）效果。它必须与图形组件在同一个GameObject上
Properties
属性
| Property: | Function: |
|---|---|
| Effect Color | The color of the outline. |
| Effect Distance | The distance of the outline effect horizontally and vertically. |
| Use Graphic Alpha | Multiplies the color of the graphic onto the color of the effect. |
| 属性 | 功能 |
|---|---|
| Effect Color | 描边的颜色 |
| Effect Distance |
描边效果在水平方向和垂直方向的距离（可以这么理解，描边就是复制了4份原图，然后按照距离在原图背后一定偏移的位置显示） |
| Use Graphic Alpha | 和前面讲的Shadow一样，表示描边的透明度要不要乘一下原图的透明度 |